diff --git a/docs/assets/js/search.js b/docs/assets/js/search.js
index 1a774144..63014802 100644
--- a/docs/assets/js/search.js
+++ b/docs/assets/js/search.js
@@ -1,3 +1,3 @@
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diff --git a/docs/classes/_bound_.bound.html b/docs/classes/_bound_.bound.html
index 18059212..33381151 100644
--- a/docs/classes/_bound_.bound.html
+++ b/docs/classes/_bound_.bound.html
@@ -236,7 +236,7 @@ <h3>constructor</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#constructor">constructor</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L17">Bound.ts:17</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L17">Bound.ts:17</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -268,7 +268,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _bottom<wbr>Right</
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 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L16">Bound.ts:16</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L16">Bound.ts:16</a></li>
 						</ul>
 					</aside>
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@@ -278,7 +278,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _center</h3>
 					<div class="tsd-signature tsd-kind-icon">_center<span class="tsd-signature-symbol">:</span> <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol"> =&nbsp;new Pt()</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L13">Bound.ts:13</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L13">Bound.ts:13</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -289,7 +289,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _id</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#_id">_id</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L510">Pt.ts:510</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L516">Pt.ts:516</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -299,7 +299,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _inited</h3>
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 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L17">Bound.ts:17</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L17">Bound.ts:17</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -309,7 +309,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _size</h3>
 					<div class="tsd-signature tsd-kind-icon">_size<span class="tsd-signature-symbol">:</span> <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol"> =&nbsp;new Pt()</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L14">Bound.ts:14</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L14">Bound.ts:14</a></li>
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@@ -319,7 +319,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _top<wbr>Left</h3>
 					<div class="tsd-signature tsd-kind-icon">_top<wbr>Left<span class="tsd-signature-symbol">:</span> <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol"> =&nbsp;new Pt()</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L15">Bound.ts:15</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L15">Bound.ts:15</a></li>
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@@ -353,7 +353,7 @@ <h3>bottom<wbr>Right</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L141">Bound.ts:141</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L141">Bound.ts:141</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
@@ -361,7 +361,7 @@ <h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signatur
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L142">Bound.ts:142</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L142">Bound.ts:142</a></li>
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@@ -385,7 +385,7 @@ <h3>center</h3>
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-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L126">Bound.ts:126</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L126">Bound.ts:126</a></li>
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 							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
@@ -393,7 +393,7 @@ <h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signatur
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 							<aside class="tsd-sources">
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-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L127">Bound.ts:127</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L127">Bound.ts:127</a></li>
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@@ -417,7 +417,7 @@ <h3>depth</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L163">Bound.ts:163</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L163">Bound.ts:163</a></li>
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 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -425,7 +425,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L164">Bound.ts:164</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L164">Bound.ts:164</a></li>
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@@ -449,7 +449,7 @@ <h3>height</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
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-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L156">Bound.ts:156</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L156">Bound.ts:156</a></li>
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 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -457,7 +457,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L157">Bound.ts:157</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L157">Bound.ts:157</a></li>
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 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -482,7 +482,7 @@ <h3>id</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#id">id</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L516">Pt.ts:516</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L522">Pt.ts:522</a></li>
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@@ -491,7 +491,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</s
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 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#id">id</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L517">Pt.ts:517</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L523">Pt.ts:523</a></li>
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@@ -514,7 +514,7 @@ <h3>inited</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L175">Bound.ts:175</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L175">Bound.ts:175</a></li>
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@@ -532,7 +532,7 @@ <h3>p1</h3>
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 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#p1">p1</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L520">Pt.ts:520</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L526">Pt.ts:526</a></li>
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@@ -555,7 +555,7 @@ <h3>p2</h3>
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 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#p2">p2</a></p>
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-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L523">Pt.ts:523</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L529">Pt.ts:529</a></li>
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@@ -578,7 +578,7 @@ <h3>p3</h3>
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 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#p3">p3</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L526">Pt.ts:526</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L532">Pt.ts:532</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -601,7 +601,7 @@ <h3>p4</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#p4">p4</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L529">Pt.ts:529</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L535">Pt.ts:535</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -624,7 +624,7 @@ <h3>q1</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#q1">q1</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L532">Pt.ts:532</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L538">Pt.ts:538</a></li>
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 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -647,7 +647,7 @@ <h3>q2</h3>
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 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#q2">q2</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L535">Pt.ts:535</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L541">Pt.ts:541</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -670,7 +670,7 @@ <h3>q3</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#q3">q3</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L538">Pt.ts:538</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L544">Pt.ts:544</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -693,7 +693,7 @@ <h3>q4</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#q4">q4</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L541">Pt.ts:541</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L547">Pt.ts:547</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -716,7 +716,7 @@ <h3>size</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L119">Bound.ts:119</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L119">Bound.ts:119</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
@@ -724,7 +724,7 @@ <h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signatur
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L120">Bound.ts:120</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L120">Bound.ts:120</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -748,7 +748,7 @@ <h3>top<wbr>Left</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L133">Bound.ts:133</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L133">Bound.ts:133</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
@@ -756,7 +756,7 @@ <h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signatur
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L134">Bound.ts:134</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L134">Bound.ts:134</a></li>
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 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -780,7 +780,7 @@ <h3>width</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L149">Bound.ts:149</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L149">Bound.ts:149</a></li>
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 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -788,7 +788,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L150">Bound.ts:150</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L150">Bound.ts:150</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -811,7 +811,7 @@ <h3>x</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L170">Bound.ts:170</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L170">Bound.ts:170</a></li>
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 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -828,7 +828,7 @@ <h3>y</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L171">Bound.ts:171</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L171">Bound.ts:171</a></li>
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 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -845,7 +845,7 @@ <h3>z</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L172">Bound.ts:172</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L172">Bound.ts:172</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -866,7 +866,7 @@ <h3>$matrix<wbr>Add</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#_matrixadd">$matrixAdd</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L848">Pt.ts:848</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L854">Pt.ts:854</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -899,7 +899,7 @@ <h3>$matrix<wbr>Multiply</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#_matrixmultiply">$matrixMultiply</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L860">Pt.ts:860</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L866">Pt.ts:866</a></li>
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 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -944,7 +944,7 @@ <h3>$zip</h3>
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 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#_zip">$zip</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L879">Pt.ts:879</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L885">Pt.ts:885</a></li>
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 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -981,7 +981,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _update<wbr>Center<
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L86">Bound.ts:86</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L86">Bound.ts:86</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1003,7 +1003,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _update<wbr>Pos<wbr
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L103">Bound.ts:103</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L103">Bound.ts:103</a></li>
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 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1025,7 +1025,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _update<wbr>Pos<wbr
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L112">Bound.ts:112</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L112">Bound.ts:112</a></li>
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 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1047,7 +1047,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _update<wbr>Pos<wbr
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L94">Bound.ts:94</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L94">Bound.ts:94</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1069,7 +1069,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _update<wbr>Size</h
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L77">Bound.ts:77</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L77">Bound.ts:77</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1092,7 +1092,7 @@ <h3>add</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#add">add</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L811">Pt.ts:811</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L817">Pt.ts:817</a></li>
 								</ul>
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 							<div class="tsd-comment tsd-typography">
@@ -1124,7 +1124,7 @@ <h3>anchor<wbr>From</h3>
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 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#anchorfrom">anchorFrom</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L662">Pt.ts:662</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L668">Pt.ts:668</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -1156,7 +1156,7 @@ <h3>anchor<wbr>To</h3>
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 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#anchorto">anchorTo</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L655">Pt.ts:655</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L661">Pt.ts:661</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -1188,7 +1188,7 @@ <h3>bounding<wbr>Box</h3>
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 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#boundingbox">boundingBox</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L646">Pt.ts:646</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L652">Pt.ts:652</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -1212,7 +1212,7 @@ <h3>centroid</h3>
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 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#centroid">centroid</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L637">Pt.ts:637</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L643">Pt.ts:643</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -1235,7 +1235,7 @@ <h3>clone</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#clone">clone</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L69">Bound.ts:69</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L69">Bound.ts:69</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -1258,7 +1258,7 @@ <h3>divide</h3>
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 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#divide">divide</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L838">Pt.ts:838</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L844">Pt.ts:844</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -1290,7 +1290,7 @@ <h3>for<wbr>Each<wbr>Pt</h3>
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 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#foreachpt">forEachPt</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L795">Pt.ts:795</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L801">Pt.ts:801</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -1327,7 +1327,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> init</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L50">Bound.ts:50</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L50">Bound.ts:50</a></li>
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 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1350,7 +1350,7 @@ <h3>insert</h3>
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 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#insert">insert</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L599">Pt.ts:599</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L605">Pt.ts:605</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -1388,7 +1388,7 @@ <h3>interpolate</h3>
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 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#interpolate">interpolate</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L698">Pt.ts:698</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L704">Pt.ts:704</a></li>
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 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1420,7 +1420,7 @@ <h3>lines</h3>
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 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#lines">lines</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L631">Pt.ts:631</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L637">Pt.ts:637</a></li>
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 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1443,7 +1443,7 @@ <h3>move<wbr>By</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#moveby">moveBy</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L711">Pt.ts:711</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L717">Pt.ts:717</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1475,7 +1475,7 @@ <h3>move<wbr>To</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#moveto">moveTo</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L719">Pt.ts:719</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L725">Pt.ts:725</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1507,7 +1507,7 @@ <h3>multiply</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#multiply">multiply</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L829">Pt.ts:829</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L835">Pt.ts:835</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1539,7 +1539,7 @@ <h3>op</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#op">op</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L671">Pt.ts:671</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L677">Pt.ts:677</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1612,7 +1612,7 @@ <h3>ops</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#ops">ops</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L685">Pt.ts:685</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L691">Pt.ts:691</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1646,7 +1646,7 @@ <h3>reflect2D</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#reflect2d">reflect2D</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L772">Pt.ts:772</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L778">Pt.ts:778</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1684,7 +1684,7 @@ <h3>remove</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#remove">remove</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L611">Pt.ts:611</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L617">Pt.ts:617</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1723,7 +1723,7 @@ <h3>rotate2D</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#rotate2d">rotate2D</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L745">Pt.ts:745</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L751">Pt.ts:751</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1767,7 +1767,7 @@ <h3>scale</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#scale">scale</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L731">Pt.ts:731</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L737">Pt.ts:737</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1805,7 +1805,7 @@ <h3>segments</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#segments">segments</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L623">Pt.ts:623</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L629">Pt.ts:629</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1849,7 +1849,7 @@ <h3>shear2D</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#shear2d">shear2D</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L759">Pt.ts:759</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L765">Pt.ts:765</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1890,7 +1890,7 @@ <h3>sort<wbr>ByDimension</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#sortbydimension">sortByDimension</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L785">Pt.ts:785</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L791">Pt.ts:791</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1928,7 +1928,7 @@ <h3>split</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#split">split</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L588">Pt.ts:588</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L594">Pt.ts:594</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1972,7 +1972,7 @@ <h3>subtract</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#subtract">subtract</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L820">Pt.ts:820</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L826">Pt.ts:826</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2004,7 +2004,7 @@ <h3>to<wbr>String</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#tostring">toString</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L887">Pt.ts:887</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L893">Pt.ts:893</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2026,7 +2026,7 @@ <h3>update</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L181">Bound.ts:181</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L181">Bound.ts:181</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2050,7 +2050,7 @@ <h3>zip<wbr>Slice</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#zipslice">zipSlice</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L870">Pt.ts:870</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L876">Pt.ts:876</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2612,7 +2612,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> from<wbr>Array</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#fromarray">fromArray</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L563">Pt.ts:563</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L569">Pt.ts:569</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2648,7 +2648,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> from<wbr>Bounding<wbr>Rec
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L35">Bound.ts:35</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L35">Bound.ts:35</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2680,7 +2680,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> from<wbr>Group</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Bound.ts#L41">Bound.ts:41</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Bound.ts#L41">Bound.ts:41</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -2704,7 +2704,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> from<wbr>PtArray</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#fromptarray">fromPtArray</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L577">Pt.ts:577</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L583">Pt.ts:583</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -4490,6 +4490,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -4511,6 +4514,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/classes/_canvas_.canvasform.html b/docs/classes/_canvas_.canvasform.html
index faff427b..b2b6b0ba 100644
--- a/docs/classes/_canvas_.canvasform.html
+++ b/docs/classes/_canvas_.canvasform.html
@@ -188,7 +188,7 @@ <h3>constructor</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L408">Canvas.ts:408</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L408">Canvas.ts:408</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -220,7 +220,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _ctx</h3>
 					<div class="tsd-signature tsd-kind-icon">_ctx<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">CanvasRenderingContext2D</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L399">Canvas.ts:399</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L399">Canvas.ts:399</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -230,7 +230,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _estimate<wbr>Text<
 					<div class="tsd-signature tsd-kind-icon">_estimate<wbr>Text<wbr>Width<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">function</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L400">Canvas.ts:400</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L400">Canvas.ts:400</a></li>
 						</ul>
 					</aside>
 					<div class="tsd-type-declaration">
@@ -262,7 +262,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _filled</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#_filled">_filled</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L45">Form.ts:45</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L45">Form.ts:45</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -273,7 +273,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _font</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#_font">_font</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L53">Form.ts:53</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L53">Form.ts:53</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -284,7 +284,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _ready</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_form_.form.html">Form</a>.<a href="_form_.form.html#_ready">_ready</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L14">Form.ts:14</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L14">Form.ts:14</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -294,7 +294,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _space</h3>
 					<div class="tsd-signature tsd-kind-icon">_space<span class="tsd-signature-symbol">:</span> <a href="_canvas_.canvasspace.html" class="tsd-signature-type">CanvasSpace</a></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L398">Canvas.ts:398</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L398">Canvas.ts:398</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -305,7 +305,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _stroked</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#_stroked">_stroked</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L49">Form.ts:49</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L49">Form.ts:49</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -323,7 +323,7 @@ <h3>current<wbr>Font</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#currentfont">currentFont</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L54">Form.ts:54</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L54">Form.ts:54</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <a href="_form_.font.html" class="tsd-signature-type">Font</a></h4>
@@ -342,7 +342,7 @@ <h3>filled</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#filled">filled</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L46">Form.ts:46</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L46">Form.ts:46</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
@@ -351,7 +351,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#filled">filled</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L47">Form.ts:47</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L47">Form.ts:47</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -375,7 +375,7 @@ <h3>ready</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.form.html">Form</a>.<a href="_form_.form.html#ready">ready</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L19">Form.ts:19</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L19">Form.ts:19</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -397,7 +397,7 @@ <h3>space</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L433">Canvas.ts:433</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L433">Canvas.ts:433</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -421,7 +421,7 @@ <h3>stroked</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#stroked">stroked</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L50">Form.ts:50</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L50">Form.ts:50</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
@@ -430,7 +430,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#stroked">stroked</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L51">Form.ts:51</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L51">Form.ts:51</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -457,7 +457,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _multiple</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#_multiple">_multiple</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L57">Form.ts:57</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L57">Form.ts:57</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -486,7 +486,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _paint</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L613">Canvas.ts:613</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L614">Canvas.ts:614</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
@@ -503,7 +503,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _text<wbr>Align</h3
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L578">Canvas.ts:578</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L578">Canvas.ts:578</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -552,7 +552,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _text<wbr>Truncate<
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L566">Canvas.ts:566</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L566">Canvas.ts:566</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -595,7 +595,7 @@ <h3>align<wbr>Text</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L918">Canvas.ts:918</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L919">Canvas.ts:919</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -633,7 +633,7 @@ <h3>arc</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#arc">arc</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L687">Canvas.ts:687</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L688">Canvas.ts:688</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -689,7 +689,7 @@ <h3>circle</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#circle">circle</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L656">Canvas.ts:656</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L657">Canvas.ts:657</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -726,7 +726,7 @@ <h3>circles</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#circles">circles</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L147">Form.ts:147</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L147">Form.ts:147</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -758,7 +758,7 @@ <h3>fill</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#fill">fill</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L465">Canvas.ts:465</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L465">Canvas.ts:465</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -795,7 +795,7 @@ <h3>fill<wbr>Only</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#fillonly">fillOnly</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L85">Form.ts:85</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L85">Form.ts:85</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -832,7 +832,7 @@ <h3>font</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#font">font</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L520">Canvas.ts:520</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L520">Canvas.ts:520</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -892,7 +892,7 @@ <h3>font<wbr>Width<wbr>Estimate</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L545">Canvas.ts:545</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L545">Canvas.ts:545</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -923,7 +923,7 @@ <h3>get<wbr>Text<wbr>Width</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L555">Canvas.ts:555</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L555">Canvas.ts:555</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -955,7 +955,7 @@ <h3>line</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#line">line</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L748">Canvas.ts:748</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L749">Canvas.ts:749</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -987,7 +987,7 @@ <h3>lines</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#lines">lines</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L183">Form.ts:183</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L183">Form.ts:183</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1018,7 +1018,7 @@ <h3>log</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L931">Canvas.ts:931</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L932">Canvas.ts:932</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1049,7 +1049,7 @@ <h3>paragraph<wbr>Box</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L859">Canvas.ts:859</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L860">Canvas.ts:860</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1105,7 +1105,7 @@ <h3>point</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#point">point</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L626">Canvas.ts:626</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L627">Canvas.ts:627</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1154,7 +1154,7 @@ <h3>points</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#points">points</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L125">Form.ts:125</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L125">Form.ts:125</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1198,7 +1198,7 @@ <h3>polygon</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#polygon">polygon</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L775">Canvas.ts:775</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L776">Canvas.ts:776</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1230,7 +1230,7 @@ <h3>polygons</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#polygons">polygons</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L199">Form.ts:199</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L199">Form.ts:199</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1262,7 +1262,7 @@ <h3>rect</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#rect">rect</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L802">Canvas.ts:802</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L803">Canvas.ts:803</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1294,7 +1294,7 @@ <h3>rects</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#rects">rects</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L216">Form.ts:216</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L216">Form.ts:216</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1325,7 +1325,7 @@ <h3>render<wbr>Offscreen</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L452">Canvas.ts:452</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L452">Canvas.ts:452</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1357,7 +1357,7 @@ <h3>reset</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#reset">reset</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L601">Canvas.ts:601</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L602">Canvas.ts:602</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1379,7 +1379,7 @@ <h3>square</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L722">Canvas.ts:722</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L723">Canvas.ts:723</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1417,7 +1417,7 @@ <h3>squares</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#squares">squares</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L156">Form.ts:156</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L156">Form.ts:156</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1449,7 +1449,7 @@ <h3>stroke</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#stroke">stroke</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L486">Canvas.ts:486</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L486">Canvas.ts:486</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1504,7 +1504,7 @@ <h3>stroke<wbr>Only</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#strokeonly">strokeOnly</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L104">Form.ts:104</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L104">Form.ts:104</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1550,7 +1550,7 @@ <h3>text</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#text">text</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L828">Canvas.ts:828</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L829">Canvas.ts:829</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1584,7 +1584,7 @@ <h3>text<wbr>Box</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L842">Canvas.ts:842</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L843">Canvas.ts:843</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1639,7 +1639,7 @@ <h3>use<wbr>Offscreen</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L441">Canvas.ts:441</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L441">Canvas.ts:441</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1677,7 +1677,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> _check<wbr>Size</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.form.html">Form</a>.<a href="_form_.form.html#_checksize">_checkSize</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L26">Form.ts:26</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L26">Form.ts:26</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1710,7 +1710,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> arc</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L672">Canvas.ts:672</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L673">Canvas.ts:673</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1771,7 +1771,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> circle</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L643">Canvas.ts:643</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L644">Canvas.ts:644</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1814,7 +1814,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> line</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L734">Canvas.ts:734</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L735">Canvas.ts:735</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1851,7 +1851,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> polygon</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L760">Canvas.ts:760</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L761">Canvas.ts:761</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1888,7 +1888,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> rect</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L787">Canvas.ts:787</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L788">Canvas.ts:788</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1925,7 +1925,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> square</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L700">Canvas.ts:700</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L701">Canvas.ts:701</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1968,7 +1968,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> text</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L816">Canvas.ts:816</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L817">Canvas.ts:817</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2007,7 +2007,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _style</h3>
 					<div class="tsd-signature tsd-kind-icon">_style<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">object</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L405">Canvas.ts:405</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L405">Canvas.ts:405</a></li>
 						</ul>
 					</aside>
 					<div class="tsd-comment tsd-typography">
@@ -2021,7 +2021,7 @@ <h3>fill<wbr>Style</h3>
 						<div class="tsd-signature tsd-kind-icon">fill<wbr>Style<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;#f03&quot;</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L406">Canvas.ts:406</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L406">Canvas.ts:406</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -2031,7 +2031,7 @@ <h3>line<wbr>Cap</h3>
 						<div class="tsd-signature tsd-kind-icon">line<wbr>Cap<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;butt&quot;</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L407">Canvas.ts:407</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L407">Canvas.ts:407</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -2041,7 +2041,7 @@ <h3>line<wbr>Join</h3>
 						<div class="tsd-signature tsd-kind-icon">line<wbr>Join<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;bevel&quot;</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L407">Canvas.ts:407</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L407">Canvas.ts:407</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -2051,7 +2051,7 @@ <h3>line<wbr>Width</h3>
 						<div class="tsd-signature tsd-kind-icon">line<wbr>Width<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;1</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L407">Canvas.ts:407</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L407">Canvas.ts:407</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -2061,7 +2061,7 @@ <h3>stroke<wbr>Style</h3>
 						<div class="tsd-signature tsd-kind-icon">stroke<wbr>Style<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;#fff&quot;</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L406">Canvas.ts:406</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L406">Canvas.ts:406</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -2101,6 +2101,9 @@ <h3>stroke<wbr>Style</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -2122,6 +2125,9 @@ <h3>stroke<wbr>Style</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/classes/_canvas_.canvasspace.html b/docs/classes/_canvas_.canvasspace.html
index dc4cab50..da246b47 100644
--- a/docs/classes/_canvas_.canvasspace.html
+++ b/docs/classes/_canvas_.canvasspace.html
@@ -208,7 +208,7 @@ <h3>constructor</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L41">Canvas.ts:41</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L41">Canvas.ts:41</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -253,7 +253,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _auto<wbr>Resize</h
 					<div class="tsd-signature tsd-kind-icon">_auto<wbr>Resize<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;true</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L33">Canvas.ts:33</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L33">Canvas.ts:33</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -263,7 +263,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _bgcolor</h3>
 					<div class="tsd-signature tsd-kind-icon">_bgcolor<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;#e1e9f0&quot;</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L34">Canvas.ts:34</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L34">Canvas.ts:34</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -274,7 +274,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _canvas</h3>
 					<aside class="tsd-sources">
 						<p>Overrides <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_canvas">_canvas</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L29">Canvas.ts:29</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L29">Canvas.ts:29</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -284,7 +284,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _container</h3>
 					<div class="tsd-signature tsd-kind-icon">_container<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">Element</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L30">Canvas.ts:30</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L30">Canvas.ts:30</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -295,7 +295,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _ctx</h3>
 					<aside class="tsd-sources">
 						<p>Overrides <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#_ctx">_ctx</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L35">Canvas.ts:35</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L35">Canvas.ts:35</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -306,7 +306,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _dragged</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_dragged">_dragged</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L307">Space.ts:307</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L307">Space.ts:307</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -317,7 +317,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _has<wbr>Mouse</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_hasmouse">_hasMouse</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L309">Space.ts:309</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L309">Space.ts:309</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -328,7 +328,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _has<wbr>Touch</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_hastouch">_hasTouch</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L310">Space.ts:310</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L310">Space.ts:310</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -338,7 +338,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _initial<wbr>Resize
 					<div class="tsd-signature tsd-kind-icon">_initial<wbr>Resize<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;false</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L41">Canvas.ts:41</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L41">Canvas.ts:41</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -349,7 +349,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _is<wbr>Ready</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#_isready">_isReady</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L57">Space.ts:57</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L57">Space.ts:57</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -359,7 +359,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _off<wbr>Canvas</h3
 					<div class="tsd-signature tsd-kind-icon">_off<wbr>Canvas<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">HTMLCanvasElement</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L38">Canvas.ts:38</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L38">Canvas.ts:38</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -369,7 +369,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _off<wbr>Ctx</h3>
 					<div class="tsd-signature tsd-kind-icon">_off<wbr>Ctx<span class="tsd-signature-symbol">:</span> <a href="../interfaces/_canvas_.ptscanvasrenderingcontext2d.html" class="tsd-signature-type">PtsCanvasRenderingContext2D</a></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L39">Canvas.ts:39</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L39">Canvas.ts:39</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -379,7 +379,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _offscreen</h3>
 					<div class="tsd-signature tsd-kind-icon">_offscreen<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;false</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L37">Canvas.ts:37</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L37">Canvas.ts:37</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -389,7 +389,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _pixel<wbr>Scale</h
 					<div class="tsd-signature tsd-kind-icon">_pixel<wbr>Scale<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;1</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L32">Canvas.ts:32</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L32">Canvas.ts:32</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -400,7 +400,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _playing</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#_playing">_playing</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L58">Space.ts:58</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L58">Space.ts:58</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -411,7 +411,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _pointer</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#_pointer">_pointer</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L55">Space.ts:55</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L55">Space.ts:55</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -422,7 +422,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _pressed</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_pressed">_pressed</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L306">Space.ts:306</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L306">Space.ts:306</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -433,7 +433,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> bound</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#bound">bound</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L42">Space.ts:42</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L42">Space.ts:42</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -444,7 +444,7 @@ <h3>id</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#id">id</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L41">Space.ts:41</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L41">Space.ts:41</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -455,7 +455,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> player<wbr>Count</h
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#playercount">playerCount</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L46">Space.ts:46</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L46">Space.ts:46</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -466,7 +466,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> players</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#players">players</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L45">Space.ts:45</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L45">Space.ts:45</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -484,7 +484,7 @@ <h3>auto<wbr>Resize</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L188">Canvas.ts:188</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L188">Canvas.ts:188</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -497,7 +497,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L180">Canvas.ts:180</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L180">Canvas.ts:180</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -531,7 +531,7 @@ <h3>background</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L260">Canvas.ts:260</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L260">Canvas.ts:260</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -544,7 +544,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</s
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L259">Canvas.ts:259</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L259">Canvas.ts:259</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -578,7 +578,7 @@ <h3>center</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#center">center</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L260">Space.ts:260</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L260">Space.ts:260</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -600,7 +600,7 @@ <h3>ctx</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L327">Canvas.ts:327</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L327">Canvas.ts:327</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -624,7 +624,7 @@ <h3>custom<wbr>Rendering</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#customrendering">customRendering</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L230">Space.ts:230</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L230">Space.ts:230</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -659,7 +659,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">null</spa
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#customrendering">customRendering</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L229">Space.ts:229</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L229">Space.ts:229</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -708,7 +708,7 @@ <h3>element</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L303">Canvas.ts:303</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L303">Canvas.ts:303</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -730,7 +730,7 @@ <h3>has<wbr>Offscreen</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L274">Canvas.ts:274</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L274">Canvas.ts:274</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -753,7 +753,7 @@ <h3>height</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#height">height</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L272">Space.ts:272</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L272">Space.ts:272</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -776,7 +776,7 @@ <h3>inner<wbr>Bound</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#innerbound">innerBound</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L248">Space.ts:248</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L248">Space.ts:248</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -799,7 +799,7 @@ <h3>is<wbr>Playing</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#isplaying">isPlaying</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L236">Space.ts:236</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L236">Space.ts:236</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -821,7 +821,7 @@ <h3>offscreen<wbr>Canvas</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L288">Canvas.ts:288</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L288">Canvas.ts:288</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -843,7 +843,7 @@ <h3>offscreen<wbr>Ctx</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L282">Canvas.ts:282</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L282">Canvas.ts:282</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -866,7 +866,7 @@ <h3>outer<wbr>Bound</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#outerbound">outerBound</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L242">Space.ts:242</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L242">Space.ts:242</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -888,7 +888,7 @@ <h3>parent</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L311">Canvas.ts:311</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L311">Canvas.ts:311</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -910,7 +910,7 @@ <h3>pixel<wbr>Scale</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L266">Canvas.ts:266</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L266">Canvas.ts:266</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -933,7 +933,7 @@ <h3>pointer</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#pointer">pointer</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L318">Space.ts:318</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L318">Space.ts:318</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -955,7 +955,7 @@ <h3>ready</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L319">Canvas.ts:319</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L319">Canvas.ts:319</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -978,7 +978,7 @@ <h3>size</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#size">size</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L254">Space.ts:254</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L254">Space.ts:254</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1001,7 +1001,7 @@ <h3>width</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#width">width</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L266">Space.ts:266</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L266">Space.ts:266</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1026,7 +1026,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _create<wbr>Element
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L110">Canvas.ts:110</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L110">Canvas.ts:110</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1064,7 +1064,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Action</
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_mouseaction">_mouseAction</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L416">Space.ts:416</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L416">Space.ts:416</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1102,7 +1102,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Down</h3
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_mousedown">_mouseDown</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L451">Space.ts:451</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L451">Space.ts:451</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1133,7 +1133,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Move</h3
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_mousemove">_mouseMove</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L475">Space.ts:475</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L475">Space.ts:475</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1164,7 +1164,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Out</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_mouseout">_mouseOut</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L499">Space.ts:499</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L499">Space.ts:499</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1195,7 +1195,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Over</h3
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_mouseover">_mouseOver</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L489">Space.ts:489</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L489">Space.ts:489</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1226,7 +1226,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Up</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_mouseup">_mouseUp</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L462">Space.ts:462</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L462">Space.ts:462</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1256,7 +1256,7 @@ <h3><span class="tsd-flag ts-flagPrivate">Private</span> _ready</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L121">Canvas.ts:121</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L121">Canvas.ts:121</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1286,7 +1286,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _resize<wbr>Handler
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L242">Canvas.ts:242</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L242">Canvas.ts:242</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1317,7 +1317,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _touch<wbr>Move</h3
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_touchmove">_touchMove</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L511">Space.ts:511</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L511">Space.ts:511</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1348,7 +1348,7 @@ <h3>add</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#add">add</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L80">Space.ts:80</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L80">Space.ts:80</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1384,7 +1384,7 @@ <h3>bind<wbr>Canvas</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#bindcanvas">bindCanvas</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L329">Space.ts:329</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L329">Space.ts:329</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1422,7 +1422,7 @@ <h3>bind<wbr>Mouse</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#bindmouse">bindMouse</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L349">Space.ts:349</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L349">Space.ts:349</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1459,7 +1459,7 @@ <h3>bind<wbr>Touch</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#bindtouch">bindTouch</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L374">Space.ts:374</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L374">Space.ts:374</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1496,7 +1496,7 @@ <h3>clear</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#clear">clear</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L335">Canvas.ts:335</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L335">Canvas.ts:335</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1527,7 +1527,7 @@ <h3>clear<wbr>Offscreen</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L356">Canvas.ts:356</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L356">Canvas.ts:356</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1559,7 +1559,7 @@ <h3>get<wbr>Form</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#getform">getForm</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L297">Canvas.ts:297</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L297">Canvas.ts:297</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1587,7 +1587,7 @@ <h3>pause</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#pause">pause</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L181">Space.ts:181</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L181">Space.ts:181</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1619,7 +1619,7 @@ <h3>play</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#play">play</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L121">Space.ts:121</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L121">Space.ts:121</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1652,7 +1652,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> play<wbr>Items</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#playitems">playItems</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L373">Canvas.ts:373</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L373">Canvas.ts:373</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1684,7 +1684,7 @@ <h3>play<wbr>Once</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#playonce">playOnce</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L210">Space.ts:210</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L210">Space.ts:210</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1716,7 +1716,7 @@ <h3>refresh</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#refresh">refresh</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L65">Space.ts:65</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L65">Space.ts:65</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1748,7 +1748,7 @@ <h3>remove</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#remove">remove</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L101">Space.ts:101</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L101">Space.ts:101</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1780,7 +1780,7 @@ <h3>remove<wbr>All</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#removeall">removeAll</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L110">Space.ts:110</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L110">Space.ts:110</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1803,7 +1803,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> render</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#render">render</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L220">Space.ts:220</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L220">Space.ts:220</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1835,7 +1835,7 @@ <h3>replay</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#replay">replay</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L145">Space.ts:145</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L145">Space.ts:145</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1859,7 +1859,7 @@ <h3>resize</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#resize">resize</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L196">Canvas.ts:196</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L196">Canvas.ts:196</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1897,7 +1897,7 @@ <h3>resume</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#resume">resume</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L190">Space.ts:190</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L190">Space.ts:190</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1919,7 +1919,7 @@ <h3>setup</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L153">Canvas.ts:153</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L153">Canvas.ts:153</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1982,7 +1982,7 @@ <h3>stop</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#stop">stop</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L200">Space.ts:200</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L200">Space.ts:200</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2014,7 +2014,7 @@ <h3>touches<wbr>ToPoints</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#touchestopoints">touchesToPoints</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L400">Space.ts:400</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L400">Space.ts:400</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2053,7 +2053,7 @@ <h3>unbind<wbr>Canvas</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#unbindcanvas">unbindCanvas</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L339">Space.ts:339</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L339">Space.ts:339</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2090,7 +2090,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _time</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#_time">_time</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L44">Space.ts:44</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L44">Space.ts:44</a></li>
 						</ul>
 					</aside>
 					<section class="tsd-panel tsd-member tsd-kind-variable tsd-parent-kind-object-literal">
@@ -2099,7 +2099,7 @@ <h3>diff</h3>
 						<div class="tsd-signature tsd-kind-icon">diff<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L44">Space.ts:44</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L44">Space.ts:44</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -2109,7 +2109,7 @@ <h3>end</h3>
 						<div class="tsd-signature tsd-kind-icon">end<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;-1</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L44">Space.ts:44</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L44">Space.ts:44</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -2119,7 +2119,7 @@ <h3>prev</h3>
 						<div class="tsd-signature tsd-kind-icon">prev<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L44">Space.ts:44</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L44">Space.ts:44</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -2159,6 +2159,9 @@ <h3>prev</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -2180,6 +2183,9 @@ <h3>prev</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/classes/_color_.color.html b/docs/classes/_color_.color.html
index 4498a81b..7de65480 100644
--- a/docs/classes/_color_.color.html
+++ b/docs/classes/_color_.color.html
@@ -193,6 +193,7 @@ <h3>Methods</h3>
 								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_color_.color.html#normalize" class="tsd-kind-icon">normalize</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_color_.color.html#op" class="tsd-kind-icon">op</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_color_.color.html#ops" class="tsd-kind-icon">ops</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_color_.color.html#projectscalar" class="tsd-kind-icon">project<wbr>Scalar</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_color_.color.html#reflect2d" class="tsd-kind-icon">reflect2D</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_color_.color.html#rotate2d" class="tsd-kind-icon">rotate2D</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_color_.color.html#round" class="tsd-kind-icon">round</a></li>
@@ -279,7 +280,7 @@ <h3>constructor</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#constructor">constructor</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L34">Color.ts:34</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L34">Color.ts:34</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -312,7 +313,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _id</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_id">_id</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L28">Pt.ts:28</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L28">Pt.ts:28</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -322,7 +323,7 @@ <h3><span class="tsd-flag ts-flagPrivate">Private</span> _is<wbr>Norm</h3>
 					<div class="tsd-signature tsd-kind-icon">_is<wbr>Norm<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;false</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L21">Color.ts:21</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L21">Color.ts:21</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -332,7 +333,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mode</h3>
 					<div class="tsd-signature tsd-kind-icon">_mode<span class="tsd-signature-symbol">:</span> <a href="../modules/_color_.html#colortype" class="tsd-signature-type">ColorType</a><span class="tsd-signature-symbol"> =&nbsp;&quot;rgb&quot;</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L20">Color.ts:20</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L20">Color.ts:20</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -358,7 +359,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> <span class="tsd-flag ts-
 					<div class="tsd-signature tsd-kind-icon">D65<span class="tsd-signature-symbol">:</span> <a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a><span class="tsd-signature-symbol"> =&nbsp;new Pt(95.047, 100, 108.883, 1)</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L18">Color.ts:18</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L18">Color.ts:18</a></li>
 						</ul>
 					</aside>
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@@ -440,7 +441,7 @@ <h3>a</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L213">Color.ts:213</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L213">Color.ts:213</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -448,7 +449,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L214">Color.ts:214</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L214">Color.ts:214</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -471,7 +472,7 @@ <h3>alpha</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L229">Color.ts:229</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L229">Color.ts:229</a></li>
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 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -494,7 +495,7 @@ <h3>b</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L193">Color.ts:193</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L193">Color.ts:193</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -502,7 +503,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L194">Color.ts:194</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L194">Color.ts:194</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -526,7 +527,7 @@ <h3>c</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L216">Color.ts:216</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L216">Color.ts:216</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -534,7 +535,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L217">Color.ts:217</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L217">Color.ts:217</a></li>
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 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -558,7 +559,7 @@ <h3>g</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L190">Color.ts:190</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L190">Color.ts:190</a></li>
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 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -566,7 +567,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L191">Color.ts:191</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L191">Color.ts:191</a></li>
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 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -590,7 +591,7 @@ <h3>h</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L197">Color.ts:197</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L197">Color.ts:197</a></li>
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 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -598,7 +599,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L198">Color.ts:198</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L198">Color.ts:198</a></li>
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 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -621,7 +622,7 @@ <h3>hex</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L137">Color.ts:137</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L137">Color.ts:137</a></li>
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 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -645,7 +646,7 @@ <h3>id</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#id">id</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L56">Pt.ts:56</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L56">Pt.ts:56</a></li>
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 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4>
@@ -654,7 +655,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</s
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#id">id</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L57">Pt.ts:57</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L57">Pt.ts:57</a></li>
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 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -678,7 +679,7 @@ <h3>l</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L206">Color.ts:206</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L206">Color.ts:206</a></li>
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 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -686,7 +687,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L207">Color.ts:207</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L207">Color.ts:207</a></li>
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 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -709,7 +710,7 @@ <h3>mode</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L183">Color.ts:183</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L183">Color.ts:183</a></li>
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 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -732,7 +733,7 @@ <h3>r</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L187">Color.ts:187</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L187">Color.ts:187</a></li>
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 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -740,7 +741,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L188">Color.ts:188</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L188">Color.ts:188</a></li>
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 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -763,7 +764,7 @@ <h3>rgb</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L142">Color.ts:142</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L142">Color.ts:142</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -785,7 +786,7 @@ <h3>rgba</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L147">Color.ts:147</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L147">Color.ts:147</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -808,7 +809,7 @@ <h3>s</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L203">Color.ts:203</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L203">Color.ts:203</a></li>
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 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -816,7 +817,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L204">Color.ts:204</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L204">Color.ts:204</a></li>
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 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -840,7 +841,7 @@ <h3>u</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L219">Color.ts:219</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L219">Color.ts:219</a></li>
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 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -848,7 +849,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L220">Color.ts:220</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L220">Color.ts:220</a></li>
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 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -872,7 +873,7 @@ <h3>v</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L222">Color.ts:222</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L222">Color.ts:222</a></li>
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 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -880,7 +881,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L223">Color.ts:223</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L223">Color.ts:223</a></li>
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 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -905,7 +906,7 @@ <h3>w</h3>
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 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#w">w</a></p>
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-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L62">Pt.ts:62</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L62">Pt.ts:62</a></li>
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 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -914,7 +915,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
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 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#w">w</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L67">Pt.ts:67</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L67">Pt.ts:67</a></li>
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 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -939,7 +940,7 @@ <h3>x</h3>
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 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#x">x</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L59">Pt.ts:59</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L59">Pt.ts:59</a></li>
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 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -948,7 +949,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#x">x</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L64">Pt.ts:64</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L64">Pt.ts:64</a></li>
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 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -973,7 +974,7 @@ <h3>y</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#y">y</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L60">Pt.ts:60</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L60">Pt.ts:60</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -982,7 +983,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#y">y</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L65">Pt.ts:65</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L65">Pt.ts:65</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -1007,7 +1008,7 @@ <h3>z</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#z">z</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L61">Pt.ts:61</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L61">Pt.ts:61</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -1016,7 +1017,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#z">z</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L66">Pt.ts:66</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L66">Pt.ts:66</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -1043,7 +1044,7 @@ <h3>$abs</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_abs">$abs</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L315">Pt.ts:315</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L321">Pt.ts:321</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1066,7 +1067,7 @@ <h3>$add</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_add">$add</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L190">Pt.ts:190</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L190">Pt.ts:190</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1095,7 +1096,7 @@ <h3>$ceil</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_ceil">$ceil</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L349">Pt.ts:349</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L355">Pt.ts:355</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1118,7 +1119,7 @@ <h3>$concat</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_concat">$concat</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L172">Pt.ts:172</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L172">Pt.ts:172</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1150,7 +1151,7 @@ <h3>$cross</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_cross">$cross</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L287">Pt.ts:287</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L287">Pt.ts:287</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1182,7 +1183,7 @@ <h3>$divide</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_divide">$divide</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L238">Pt.ts:238</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L238">Pt.ts:238</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1211,7 +1212,7 @@ <h3>$floor</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_floor">$floor</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L332">Pt.ts:332</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L338">Pt.ts:338</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1234,7 +1235,7 @@ <h3>$max</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_max">$max</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L407">Pt.ts:407</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L413">Pt.ts:413</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1266,7 +1267,7 @@ <h3>$min</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_min">$min</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L393">Pt.ts:393</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L399">Pt.ts:399</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1298,7 +1299,7 @@ <h3>$multiply</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_multiply">$multiply</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L222">Pt.ts:222</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L222">Pt.ts:222</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1326,7 +1327,7 @@ <h3>$normalize</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L258">Color.ts:258</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L258">Color.ts:258</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1352,31 +1353,29 @@ <h4 class="tsd-returns-title">Returns <a href="_color_.color.html" class="tsd-si
 					<a name="_project" class="tsd-anchor"></a>
 					<h3>$project</h3>
 					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
-						<li class="tsd-signature tsd-kind-icon">$project<span class="tsd-signature-symbol">(</span>p<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+						<li class="tsd-signature tsd-kind-icon">$project<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
 					</ul>
 					<ul class="tsd-descriptions">
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_project">$project</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L294">Pt.ts:294</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L295">Pt.ts:295</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
 								<div class="lead">
-									<p>Calculate vector projection of this Pt on another Pt. Returns result as a new Pt.</p>
+									<p>Calculate vector projection of this Pt on another Pt.</p>
 								</div>
 							</div>
 							<h4 class="tsd-parameters-title">Parameters</h4>
 							<ul class="tsd-parameters">
 								<li>
-									<h5>p: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
-									<div class="tsd-comment tsd-typography">
-										<p>a list of numbers, an array of number, or an object with {x,y,z,w} properties</p>
-									</div>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
 								</li>
 							</ul>
 							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+							<p>the projection vector as a Pt</p>
 						</li>
 					</ul>
 				</section>
@@ -1391,7 +1390,7 @@ <h3>$round</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_round">$round</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L366">Pt.ts:366</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L372">Pt.ts:372</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1414,7 +1413,7 @@ <h3>$subtract</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_subtract">$subtract</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L206">Pt.ts:206</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L206">Pt.ts:206</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1443,7 +1442,7 @@ <h3>$take</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_take">$take</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L159">Pt.ts:159</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L159">Pt.ts:159</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1475,7 +1474,7 @@ <h3>$to</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_to">$to</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L108">Pt.ts:108</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L108">Pt.ts:108</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1507,7 +1506,7 @@ <h3>$unit</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_unit">$unit</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L266">Pt.ts:266</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L266">Pt.ts:266</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1536,7 +1535,7 @@ <h3>abs</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#abs">abs</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L306">Pt.ts:306</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L312">Pt.ts:312</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1559,7 +1558,7 @@ <h3>add</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#add">add</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L181">Pt.ts:181</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L181">Pt.ts:181</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1591,7 +1590,7 @@ <h3>angle</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#angle">angle</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L421">Pt.ts:421</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L427">Pt.ts:427</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1623,7 +1622,7 @@ <h3>angle<wbr>Between</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#anglebetween">angleBetween</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L431">Pt.ts:431</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L437">Pt.ts:437</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1661,7 +1660,7 @@ <h3>ceil</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#ceil">ceil</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L340">Pt.ts:340</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L346">Pt.ts:346</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1684,7 +1683,7 @@ <h3>clone</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#clone">clone</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L153">Color.ts:153</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L153">Color.ts:153</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1707,7 +1706,7 @@ <h3>cross2D</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#cross2d">cross2D</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L280">Pt.ts:280</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L280">Pt.ts:280</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1739,7 +1738,7 @@ <h3>divide</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#divide">divide</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L229">Pt.ts:229</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L229">Pt.ts:229</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1771,7 +1770,7 @@ <h3>dot</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#dot">dot</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L273">Pt.ts:273</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L273">Pt.ts:273</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1803,7 +1802,7 @@ <h3>equals</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#equals">equals</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L83">Pt.ts:83</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L83">Pt.ts:83</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1841,7 +1840,7 @@ <h3>floor</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#floor">floor</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L323">Pt.ts:323</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L329">Pt.ts:329</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1864,7 +1863,7 @@ <h3>magnitude</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#magnitude">magnitude</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L250">Pt.ts:250</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L250">Pt.ts:250</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1887,7 +1886,7 @@ <h3>magnitude<wbr>Sq</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#magnitudesq">magnitudeSq</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L244">Pt.ts:244</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L244">Pt.ts:244</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1910,7 +1909,7 @@ <h3>max<wbr>Value</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#maxvalue">maxValue</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L384">Pt.ts:384</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L390">Pt.ts:390</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1942,7 +1941,7 @@ <h3>min<wbr>Value</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#minvalue">minValue</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L375">Pt.ts:375</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L381">Pt.ts:381</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1974,7 +1973,7 @@ <h3>multiply</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#multiply">multiply</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L213">Pt.ts:213</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L213">Pt.ts:213</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2005,7 +2004,7 @@ <h3>normalize</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L236">Color.ts:236</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L236">Color.ts:236</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2037,7 +2036,7 @@ <h3>op</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#op">op</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L132">Pt.ts:132</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L132">Pt.ts:132</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2110,7 +2109,7 @@ <h3>ops</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#ops">ops</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L146">Pt.ts:146</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L146">Pt.ts:146</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2133,6 +2132,35 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">function<
 						</li>
 					</ul>
 				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="projectscalar" class="tsd-anchor"></a>
+					<h3>project<wbr>Scalar</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">project<wbr>Scalar<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#projectscalar">projectScalar</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L304">Pt.ts:304</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Calculate scalar projection</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+					</ul>
+				</section>
 				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
 					<a name="reflect2d" class="tsd-anchor"></a>
 					<h3>reflect2D</h3>
@@ -2144,7 +2172,7 @@ <h3>reflect2D</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#reflect2d">reflect2D</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L476">Pt.ts:476</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L482">Pt.ts:482</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2182,7 +2210,7 @@ <h3>rotate2D</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#rotate2d">rotate2D</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L453">Pt.ts:453</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L459">Pt.ts:459</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2226,7 +2254,7 @@ <h3>round</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#round">round</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L357">Pt.ts:357</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L363">Pt.ts:363</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2249,7 +2277,7 @@ <h3>scale</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#scale">scale</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L441">Pt.ts:441</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L447">Pt.ts:447</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2287,7 +2315,7 @@ <h3>shear2D</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#shear2d">shear2D</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L465">Pt.ts:465</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L471">Pt.ts:471</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2328,7 +2356,7 @@ <h3>subtract</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#subtract">subtract</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L197">Pt.ts:197</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L197">Pt.ts:197</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2360,7 +2388,7 @@ <h3>to</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#to">to</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L95">Pt.ts:95</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L95">Pt.ts:95</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2392,7 +2420,7 @@ <h3>to<wbr>Angle</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#toangle">toAngle</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L119">Pt.ts:119</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L119">Pt.ts:119</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2436,7 +2464,7 @@ <h3>to<wbr>Array</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#toarray">toArray</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L493">Pt.ts:493</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L499">Pt.ts:499</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2458,7 +2486,7 @@ <h3>to<wbr>Mode</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L164">Color.ts:164</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L164">Color.ts:164</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2496,7 +2524,7 @@ <h3>to<wbr>String</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#tostring">toString</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L265">Color.ts:265</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L265">Color.ts:265</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2528,7 +2556,7 @@ <h3>unit</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#unit">unit</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L257">Pt.ts:257</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L257">Pt.ts:257</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2559,7 +2587,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> HSBtoRGB</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L399">Color.ts:399</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L399">Color.ts:399</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2603,7 +2631,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> HSLtoRGB</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L328">Color.ts:328</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L328">Color.ts:328</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2647,7 +2675,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> LABtoLCH</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L676">Color.ts:676</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L676">Color.ts:676</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2691,7 +2719,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> LABtoRGB</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L445">Color.ts:445</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L445">Color.ts:445</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2735,7 +2763,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> LABtoXYZ</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L589">Color.ts:589</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L589">Color.ts:589</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2779,7 +2807,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> LCHtoLAB</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L692">Color.ts:692</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L692">Color.ts:692</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2823,7 +2851,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> LCHtoRGB</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L471">Color.ts:471</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L471">Color.ts:471</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2867,7 +2895,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> LUVtoRGB</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L497">Color.ts:497</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L497">Color.ts:497</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2908,7 +2936,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> LUVtoXYZ</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L649">Color.ts:649</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L649">Color.ts:649</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2952,7 +2980,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> RGBtoHSB</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L368">Color.ts:368</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L368">Color.ts:368</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2996,7 +3024,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> RGBtoHSL</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L292">Color.ts:292</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L292">Color.ts:292</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -3040,7 +3068,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> RGBtoLAB</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L432">Color.ts:432</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L432">Color.ts:432</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -3084,7 +3112,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> RGBtoLCH</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L458">Color.ts:458</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L458">Color.ts:458</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -3128,7 +3156,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> RGBtoLUV</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L484">Color.ts:484</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L484">Color.ts:484</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -3172,7 +3200,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> RGBtoXYZ</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L510">Color.ts:510</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L510">Color.ts:510</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -3216,7 +3244,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> XYZtoLAB</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L564">Color.ts:564</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L564">Color.ts:564</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -3260,7 +3288,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> XYZtoLUV</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L624">Color.ts:624</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L624">Color.ts:624</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -3304,7 +3332,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> XYZtoRGB</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L536">Color.ts:536</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L536">Color.ts:536</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -4245,7 +4273,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> from</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L49">Color.ts:49</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L49">Color.ts:49</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -4276,7 +4304,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> from<wbr>Hex</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L63">Color.ts:63</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L63">Color.ts:63</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -4307,7 +4335,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> hsb</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L99">Color.ts:99</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L99">Color.ts:99</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -4338,7 +4366,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> hsl</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L93">Color.ts:93</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L93">Color.ts:93</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -4441,7 +4469,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> lab</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L105">Color.ts:105</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L105">Color.ts:105</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -4511,7 +4539,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> lch</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L111">Color.ts:111</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L111">Color.ts:111</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -4542,7 +4570,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> luv</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L117">Color.ts:117</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L117">Color.ts:117</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -4574,7 +4602,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> make</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#make">make</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L45">Pt.ts:45</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L45">Pt.ts:45</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -4762,7 +4790,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> max<wbr>Values</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L131">Color.ts:131</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L131">Color.ts:131</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -5097,7 +5125,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> rgb</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L87">Color.ts:87</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L87">Color.ts:87</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -5502,7 +5530,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> xyz</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L123">Color.ts:123</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L123">Color.ts:123</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -5532,7 +5560,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> ranges</h3>
 					<div class="tsd-signature tsd-kind-icon">ranges<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">object</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L26">Color.ts:26</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L26">Color.ts:26</a></li>
 						</ul>
 					</aside>
 					<div class="tsd-comment tsd-typography">
@@ -5546,7 +5574,7 @@ <h3>hsb</h3>
 						<div class="tsd-signature tsd-kind-icon">hsb<span class="tsd-signature-symbol">:</span> <a href="_pt_.group.html" class="tsd-signature-type">Group</a><span class="tsd-signature-symbol"> =&nbsp;new Group( new Pt(0,360), new Pt(0,1), new Pt(0,1) )</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L29">Color.ts:29</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L29">Color.ts:29</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -5556,7 +5584,7 @@ <h3>hsl</h3>
 						<div class="tsd-signature tsd-kind-icon">hsl<span class="tsd-signature-symbol">:</span> <a href="_pt_.group.html" class="tsd-signature-type">Group</a><span class="tsd-signature-symbol"> =&nbsp;new Group( new Pt(0,360), new Pt(0,1), new Pt(0,1) )</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L28">Color.ts:28</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L28">Color.ts:28</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -5566,7 +5594,7 @@ <h3>lab</h3>
 						<div class="tsd-signature tsd-kind-icon">lab<span class="tsd-signature-symbol">:</span> <a href="_pt_.group.html" class="tsd-signature-type">Group</a><span class="tsd-signature-symbol"> =&nbsp;new Group( new Pt(0,100), new Pt(-128,127), new Pt(-128, 127) )</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L30">Color.ts:30</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L30">Color.ts:30</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -5576,7 +5604,7 @@ <h3>lch</h3>
 						<div class="tsd-signature tsd-kind-icon">lch<span class="tsd-signature-symbol">:</span> <a href="_pt_.group.html" class="tsd-signature-type">Group</a><span class="tsd-signature-symbol"> =&nbsp;new Group( new Pt(0,100), new Pt(0,100), new Pt(0,360) )</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L31">Color.ts:31</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L31">Color.ts:31</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -5586,7 +5614,7 @@ <h3>luv</h3>
 						<div class="tsd-signature tsd-kind-icon">luv<span class="tsd-signature-symbol">:</span> <a href="_pt_.group.html" class="tsd-signature-type">Group</a><span class="tsd-signature-symbol"> =&nbsp;new Group( new Pt(0,100), new Pt(-134,220), new Pt(-140,122) )</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L32">Color.ts:32</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L32">Color.ts:32</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -5596,7 +5624,7 @@ <h3>rgb</h3>
 						<div class="tsd-signature tsd-kind-icon">rgb<span class="tsd-signature-symbol">:</span> <a href="_pt_.group.html" class="tsd-signature-type">Group</a><span class="tsd-signature-symbol"> =&nbsp;new Group( new Pt(0,255), new Pt(0,255), new Pt(0,255) )</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L27">Color.ts:27</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L27">Color.ts:27</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -5606,7 +5634,7 @@ <h3>xyz</h3>
 						<div class="tsd-signature tsd-kind-icon">xyz<span class="tsd-signature-symbol">:</span> <a href="_pt_.group.html" class="tsd-signature-type">Group</a><span class="tsd-signature-symbol"> =&nbsp;new Group( new Pt(0,100), new Pt(0,100), new Pt(0,100) )</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L33">Color.ts:33</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L33">Color.ts:33</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -5646,6 +5674,9 @@ <h3>xyz</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -5667,6 +5698,9 @@ <h3>xyz</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
@@ -5874,6 +5908,9 @@ <h3>xyz</h3>
 							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
 								<a href="_color_.color.html#ops" class="tsd-kind-icon">ops</a>
 							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+								<a href="_color_.color.html#projectscalar" class="tsd-kind-icon">project<wbr>Scalar</a>
+							</li>
 							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
 								<a href="_color_.color.html#reflect2d" class="tsd-kind-icon">reflect2D</a>
 							</li>
diff --git a/docs/classes/_create_.create.html b/docs/classes/_create_.create.html
index cbb3693f..f049a34f 100644
--- a/docs/classes/_create_.create.html
+++ b/docs/classes/_create_.create.html
@@ -115,7 +115,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> delaunay</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L139">Create.ts:139</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L139">Create.ts:139</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -147,7 +147,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> distribute<wbr>Linear</h3
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L42">Create.ts:42</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L42">Create.ts:42</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -184,7 +184,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> distribute<wbr>Random</h3
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L25">Create.ts:25</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L25">Create.ts:25</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -227,7 +227,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> grid<wbr>Cells</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L79">Create.ts:79</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L79">Create.ts:79</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -271,7 +271,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> grid<wbr>Pts</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L58">Create.ts:58</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L58">Create.ts:58</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -321,7 +321,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> noise<wbr>Pts</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L119">Create.ts:119</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L119">Create.ts:119</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -376,7 +376,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> radial<wbr>Pts</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L101">Create.ts:101</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L101">Create.ts:101</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -444,6 +444,9 @@ <h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signa
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -465,6 +468,9 @@ <h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signa
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/classes/_create_.delaunay.html b/docs/classes/_create_.delaunay.html
index 53ca9c19..08130a1b 100644
--- a/docs/classes/_create_.delaunay.html
+++ b/docs/classes/_create_.delaunay.html
@@ -218,7 +218,7 @@ <h3>constructor</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#constructor">constructor</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L510">Pt.ts:510</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L516">Pt.ts:516</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -241,7 +241,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _id</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#_id">_id</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L510">Pt.ts:510</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L516">Pt.ts:516</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -251,7 +251,7 @@ <h3><span class="tsd-flag ts-flagPrivate">Private</span> _mesh</h3>
 					<div class="tsd-signature tsd-kind-icon">_mesh<span class="tsd-signature-symbol">:</span> <a href="../modules/_create_.html#delaunaymesh" class="tsd-signature-type">DelaunayMesh</a><span class="tsd-signature-symbol"> =&nbsp;[]</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L279">Create.ts:279</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L279">Create.ts:279</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -286,7 +286,7 @@ <h3>id</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#id">id</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L516">Pt.ts:516</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L522">Pt.ts:522</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4>
@@ -295,7 +295,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</s
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#id">id</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L517">Pt.ts:517</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L523">Pt.ts:523</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -319,7 +319,7 @@ <h3>p1</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#p1">p1</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L520">Pt.ts:520</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L526">Pt.ts:526</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -342,7 +342,7 @@ <h3>p2</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#p2">p2</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L523">Pt.ts:523</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L529">Pt.ts:529</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -365,7 +365,7 @@ <h3>p3</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#p3">p3</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L526">Pt.ts:526</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L532">Pt.ts:532</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -388,7 +388,7 @@ <h3>p4</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#p4">p4</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L529">Pt.ts:529</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L535">Pt.ts:535</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -411,7 +411,7 @@ <h3>q1</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#q1">q1</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L532">Pt.ts:532</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L538">Pt.ts:538</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -434,7 +434,7 @@ <h3>q2</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#q2">q2</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L535">Pt.ts:535</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L541">Pt.ts:541</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -457,7 +457,7 @@ <h3>q3</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#q3">q3</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L538">Pt.ts:538</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L544">Pt.ts:544</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -480,7 +480,7 @@ <h3>q4</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#q4">q4</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L541">Pt.ts:541</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L547">Pt.ts:547</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -506,7 +506,7 @@ <h3>$matrix<wbr>Add</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#_matrixadd">$matrixAdd</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L848">Pt.ts:848</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L854">Pt.ts:854</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -539,7 +539,7 @@ <h3>$matrix<wbr>Multiply</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#_matrixmultiply">$matrixMultiply</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L860">Pt.ts:860</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L866">Pt.ts:866</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -584,7 +584,7 @@ <h3>$zip</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#_zip">$zip</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L879">Pt.ts:879</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L885">Pt.ts:885</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -621,7 +621,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _cache</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L421">Create.ts:421</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L421">Create.ts:421</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -652,7 +652,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _circum</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L468">Create.ts:468</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L468">Create.ts:468</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -707,7 +707,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _super<wbr>Triangle
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L432">Create.ts:432</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L432">Create.ts:432</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -730,7 +730,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _triangle</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L455">Create.ts:455</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L455">Create.ts:455</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -780,7 +780,7 @@ <h3>add</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#add">add</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L811">Pt.ts:811</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L817">Pt.ts:817</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -812,7 +812,7 @@ <h3>anchor<wbr>From</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#anchorfrom">anchorFrom</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L662">Pt.ts:662</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L668">Pt.ts:668</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -844,7 +844,7 @@ <h3>anchor<wbr>To</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#anchorto">anchorTo</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L655">Pt.ts:655</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L661">Pt.ts:661</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -876,7 +876,7 @@ <h3>bounding<wbr>Box</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#boundingbox">boundingBox</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L646">Pt.ts:646</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L652">Pt.ts:652</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -900,7 +900,7 @@ <h3>centroid</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#centroid">centroid</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L637">Pt.ts:637</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L643">Pt.ts:643</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -923,7 +923,7 @@ <h3>clone</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#clone">clone</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L549">Pt.ts:549</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L555">Pt.ts:555</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -945,7 +945,7 @@ <h3>delaunay</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L286">Create.ts:286</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L286">Create.ts:286</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -981,7 +981,7 @@ <h3>divide</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#divide">divide</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L838">Pt.ts:838</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L844">Pt.ts:844</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1013,7 +1013,7 @@ <h3>for<wbr>Each<wbr>Pt</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#foreachpt">forEachPt</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L795">Pt.ts:795</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L801">Pt.ts:801</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1051,7 +1051,7 @@ <h3>insert</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#insert">insert</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L599">Pt.ts:599</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L605">Pt.ts:605</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1089,7 +1089,7 @@ <h3>interpolate</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#interpolate">interpolate</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L698">Pt.ts:698</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L704">Pt.ts:704</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1121,7 +1121,7 @@ <h3>lines</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#lines">lines</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L631">Pt.ts:631</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L637">Pt.ts:637</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1143,7 +1143,7 @@ <h3>mesh</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L381">Create.ts:381</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L381">Create.ts:381</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1167,7 +1167,7 @@ <h3>move<wbr>By</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#moveby">moveBy</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L711">Pt.ts:711</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L717">Pt.ts:717</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1199,7 +1199,7 @@ <h3>move<wbr>To</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#moveto">moveTo</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L719">Pt.ts:719</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L725">Pt.ts:725</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1231,7 +1231,7 @@ <h3>multiply</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#multiply">multiply</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L829">Pt.ts:829</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L835">Pt.ts:835</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1262,7 +1262,7 @@ <h3>neighbor<wbr>Pts</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L392">Create.ts:392</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L392">Create.ts:392</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1300,7 +1300,7 @@ <h3>neighbors</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L407">Create.ts:407</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L407">Create.ts:407</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1333,7 +1333,7 @@ <h3>op</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#op">op</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L671">Pt.ts:671</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L677">Pt.ts:677</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1406,7 +1406,7 @@ <h3>ops</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#ops">ops</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L685">Pt.ts:685</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L691">Pt.ts:691</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1440,7 +1440,7 @@ <h3>reflect2D</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#reflect2d">reflect2D</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L772">Pt.ts:772</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L778">Pt.ts:778</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1478,7 +1478,7 @@ <h3>remove</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#remove">remove</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L611">Pt.ts:611</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L617">Pt.ts:617</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1517,7 +1517,7 @@ <h3>rotate2D</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#rotate2d">rotate2D</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L745">Pt.ts:745</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L751">Pt.ts:751</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1561,7 +1561,7 @@ <h3>scale</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#scale">scale</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L731">Pt.ts:731</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L737">Pt.ts:737</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1599,7 +1599,7 @@ <h3>segments</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#segments">segments</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L623">Pt.ts:623</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L629">Pt.ts:629</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1643,7 +1643,7 @@ <h3>shear2D</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#shear2d">shear2D</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L759">Pt.ts:759</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L765">Pt.ts:765</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1684,7 +1684,7 @@ <h3>sort<wbr>ByDimension</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#sortbydimension">sortByDimension</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L785">Pt.ts:785</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L791">Pt.ts:791</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1722,7 +1722,7 @@ <h3>split</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#split">split</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L588">Pt.ts:588</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L594">Pt.ts:594</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1766,7 +1766,7 @@ <h3>subtract</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#subtract">subtract</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L820">Pt.ts:820</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L826">Pt.ts:826</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1798,7 +1798,7 @@ <h3>to<wbr>String</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#tostring">toString</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L887">Pt.ts:887</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L893">Pt.ts:893</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1820,7 +1820,7 @@ <h3>voronoi</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L367">Create.ts:367</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L367">Create.ts:367</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1844,7 +1844,7 @@ <h3>zip<wbr>Slice</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#zipslice">zipSlice</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L870">Pt.ts:870</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L876">Pt.ts:876</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1878,7 +1878,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> <span class="tsd-flag ts-
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L484">Create.ts:484</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L484">Create.ts:484</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2436,7 +2436,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> from<wbr>Array</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#fromarray">fromArray</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L563">Pt.ts:563</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L569">Pt.ts:569</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2473,7 +2473,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> from<wbr>PtArray</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#fromptarray">fromPtArray</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L577">Pt.ts:577</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L583">Pt.ts:583</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -4259,6 +4259,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -4280,6 +4283,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/classes/_create_.noise.html b/docs/classes/_create_.noise.html
index e9c21d96..ebcbc519 100644
--- a/docs/classes/_create_.noise.html
+++ b/docs/classes/_create_.noise.html
@@ -179,6 +179,7 @@ <h3>Methods</h3>
 								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_create_.noise.html#noise2d" class="tsd-kind-icon">noise2D</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_create_.noise.html#op" class="tsd-kind-icon">op</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_create_.noise.html#ops" class="tsd-kind-icon">ops</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_create_.noise.html#projectscalar" class="tsd-kind-icon">project<wbr>Scalar</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_create_.noise.html#reflect2d" class="tsd-kind-icon">reflect2D</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_create_.noise.html#rotate2d" class="tsd-kind-icon">rotate2D</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_create_.noise.html#round" class="tsd-kind-icon">round</a></li>
@@ -232,7 +233,7 @@ <h3>constructor</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#constructor">constructor</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L186">Create.ts:186</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L186">Create.ts:186</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -265,7 +266,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _id</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_id">_id</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L28">Pt.ts:28</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L28">Pt.ts:28</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -275,7 +276,7 @@ <h3><span class="tsd-flag ts-flagPrivate">Private</span> _n</h3>
 					<div class="tsd-signature tsd-kind-icon">_n<span class="tsd-signature-symbol">:</span> <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol"> =&nbsp;new Pt(0.01, 0.01)</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L186">Create.ts:186</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L186">Create.ts:186</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -285,7 +286,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> perm</h3>
 					<div class="tsd-signature tsd-kind-icon">perm<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol"> =&nbsp;[]</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L185">Create.ts:185</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L185">Create.ts:185</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -384,7 +385,7 @@ <h3>id</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#id">id</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L56">Pt.ts:56</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L56">Pt.ts:56</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4>
@@ -393,7 +394,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</s
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#id">id</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L57">Pt.ts:57</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L57">Pt.ts:57</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -418,7 +419,7 @@ <h3>w</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#w">w</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L62">Pt.ts:62</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L62">Pt.ts:62</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -427,7 +428,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#w">w</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L67">Pt.ts:67</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L67">Pt.ts:67</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -452,7 +453,7 @@ <h3>x</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#x">x</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L59">Pt.ts:59</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L59">Pt.ts:59</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -461,7 +462,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#x">x</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L64">Pt.ts:64</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L64">Pt.ts:64</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -486,7 +487,7 @@ <h3>y</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#y">y</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L60">Pt.ts:60</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L60">Pt.ts:60</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -495,7 +496,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#y">y</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L65">Pt.ts:65</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L65">Pt.ts:65</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -520,7 +521,7 @@ <h3>z</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#z">z</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L61">Pt.ts:61</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L61">Pt.ts:61</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -529,7 +530,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#z">z</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L66">Pt.ts:66</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L66">Pt.ts:66</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -556,7 +557,7 @@ <h3>$abs</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_abs">$abs</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L315">Pt.ts:315</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L321">Pt.ts:321</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -579,7 +580,7 @@ <h3>$add</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_add">$add</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L190">Pt.ts:190</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L190">Pt.ts:190</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -608,7 +609,7 @@ <h3>$ceil</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_ceil">$ceil</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L349">Pt.ts:349</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L355">Pt.ts:355</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -631,7 +632,7 @@ <h3>$concat</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_concat">$concat</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L172">Pt.ts:172</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L172">Pt.ts:172</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -663,7 +664,7 @@ <h3>$cross</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_cross">$cross</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L287">Pt.ts:287</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L287">Pt.ts:287</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -695,7 +696,7 @@ <h3>$divide</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_divide">$divide</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L238">Pt.ts:238</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L238">Pt.ts:238</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -724,7 +725,7 @@ <h3>$floor</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_floor">$floor</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L332">Pt.ts:332</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L338">Pt.ts:338</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -747,7 +748,7 @@ <h3>$max</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_max">$max</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L407">Pt.ts:407</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L413">Pt.ts:413</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -779,7 +780,7 @@ <h3>$min</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_min">$min</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L393">Pt.ts:393</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L399">Pt.ts:399</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -811,7 +812,7 @@ <h3>$multiply</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_multiply">$multiply</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L222">Pt.ts:222</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L222">Pt.ts:222</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -833,31 +834,29 @@ <h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signatur
 					<a name="_project" class="tsd-anchor"></a>
 					<h3>$project</h3>
 					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
-						<li class="tsd-signature tsd-kind-icon">$project<span class="tsd-signature-symbol">(</span>p<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+						<li class="tsd-signature tsd-kind-icon">$project<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
 					</ul>
 					<ul class="tsd-descriptions">
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_project">$project</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L294">Pt.ts:294</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L295">Pt.ts:295</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
 								<div class="lead">
-									<p>Calculate vector projection of this Pt on another Pt. Returns result as a new Pt.</p>
+									<p>Calculate vector projection of this Pt on another Pt.</p>
 								</div>
 							</div>
 							<h4 class="tsd-parameters-title">Parameters</h4>
 							<ul class="tsd-parameters">
 								<li>
-									<h5>p: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
-									<div class="tsd-comment tsd-typography">
-										<p>a list of numbers, an array of number, or an object with {x,y,z,w} properties</p>
-									</div>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
 								</li>
 							</ul>
 							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+							<p>the projection vector as a Pt</p>
 						</li>
 					</ul>
 				</section>
@@ -872,7 +871,7 @@ <h3>$round</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_round">$round</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L366">Pt.ts:366</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L372">Pt.ts:372</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -895,7 +894,7 @@ <h3>$subtract</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_subtract">$subtract</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L206">Pt.ts:206</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L206">Pt.ts:206</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -924,7 +923,7 @@ <h3>$take</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_take">$take</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L159">Pt.ts:159</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L159">Pt.ts:159</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -956,7 +955,7 @@ <h3>$to</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_to">$to</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L108">Pt.ts:108</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L108">Pt.ts:108</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -988,7 +987,7 @@ <h3>$unit</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_unit">$unit</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L266">Pt.ts:266</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L266">Pt.ts:266</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1017,7 +1016,7 @@ <h3>abs</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#abs">abs</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L306">Pt.ts:306</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L312">Pt.ts:312</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1040,7 +1039,7 @@ <h3>add</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#add">add</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L181">Pt.ts:181</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L181">Pt.ts:181</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1072,7 +1071,7 @@ <h3>angle</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#angle">angle</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L421">Pt.ts:421</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L427">Pt.ts:427</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1104,7 +1103,7 @@ <h3>angle<wbr>Between</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#anglebetween">angleBetween</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L431">Pt.ts:431</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L437">Pt.ts:437</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1142,7 +1141,7 @@ <h3>ceil</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#ceil">ceil</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L340">Pt.ts:340</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L346">Pt.ts:346</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1165,7 +1164,7 @@ <h3>clone</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#clone">clone</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L73">Pt.ts:73</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L73">Pt.ts:73</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1188,7 +1187,7 @@ <h3>cross2D</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#cross2d">cross2D</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L280">Pt.ts:280</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L280">Pt.ts:280</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1220,7 +1219,7 @@ <h3>divide</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#divide">divide</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L229">Pt.ts:229</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L229">Pt.ts:229</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1252,7 +1251,7 @@ <h3>dot</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#dot">dot</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L273">Pt.ts:273</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L273">Pt.ts:273</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1284,7 +1283,7 @@ <h3>equals</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#equals">equals</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L83">Pt.ts:83</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L83">Pt.ts:83</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1322,7 +1321,7 @@ <h3>floor</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#floor">floor</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L323">Pt.ts:323</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L329">Pt.ts:329</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1344,7 +1343,7 @@ <h3>init<wbr>Noise</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L205">Create.ts:205</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L205">Create.ts:205</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1381,7 +1380,7 @@ <h3>magnitude</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#magnitude">magnitude</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L250">Pt.ts:250</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L250">Pt.ts:250</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1404,7 +1403,7 @@ <h3>magnitude<wbr>Sq</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#magnitudesq">magnitudeSq</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L244">Pt.ts:244</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L244">Pt.ts:244</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1427,7 +1426,7 @@ <h3>max<wbr>Value</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#maxvalue">maxValue</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L384">Pt.ts:384</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L390">Pt.ts:390</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1459,7 +1458,7 @@ <h3>min<wbr>Value</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#minvalue">minValue</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L375">Pt.ts:375</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L381">Pt.ts:381</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1491,7 +1490,7 @@ <h3>multiply</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#multiply">multiply</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L213">Pt.ts:213</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L213">Pt.ts:213</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1522,7 +1521,7 @@ <h3>noise2D</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L239">Create.ts:239</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L239">Create.ts:239</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1545,7 +1544,7 @@ <h3>op</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#op">op</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L132">Pt.ts:132</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L132">Pt.ts:132</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1618,7 +1617,7 @@ <h3>ops</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#ops">ops</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L146">Pt.ts:146</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L146">Pt.ts:146</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1641,6 +1640,35 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">function<
 						</li>
 					</ul>
 				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="projectscalar" class="tsd-anchor"></a>
+					<h3>project<wbr>Scalar</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">project<wbr>Scalar<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#projectscalar">projectScalar</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L304">Pt.ts:304</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Calculate scalar projection</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+					</ul>
+				</section>
 				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
 					<a name="reflect2d" class="tsd-anchor"></a>
 					<h3>reflect2D</h3>
@@ -1652,7 +1680,7 @@ <h3>reflect2D</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#reflect2d">reflect2D</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L476">Pt.ts:476</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L482">Pt.ts:482</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1690,7 +1718,7 @@ <h3>rotate2D</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#rotate2d">rotate2D</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L453">Pt.ts:453</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L459">Pt.ts:459</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1734,7 +1762,7 @@ <h3>round</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#round">round</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L357">Pt.ts:357</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L363">Pt.ts:363</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1757,7 +1785,7 @@ <h3>scale</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#scale">scale</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L441">Pt.ts:441</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L447">Pt.ts:447</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1794,7 +1822,7 @@ <h3>seed</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L223">Create.ts:223</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L223">Create.ts:223</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1826,7 +1854,7 @@ <h3>shear2D</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#shear2d">shear2D</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L465">Pt.ts:465</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L471">Pt.ts:471</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1866,7 +1894,7 @@ <h3>step</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L215">Create.ts:215</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L215">Create.ts:215</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1904,7 +1932,7 @@ <h3>subtract</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#subtract">subtract</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L197">Pt.ts:197</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L197">Pt.ts:197</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1936,7 +1964,7 @@ <h3>to</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#to">to</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L95">Pt.ts:95</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L95">Pt.ts:95</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1968,7 +1996,7 @@ <h3>to<wbr>Angle</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#toangle">toAngle</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L119">Pt.ts:119</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L119">Pt.ts:119</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2012,7 +2040,7 @@ <h3>to<wbr>Array</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#toarray">toArray</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L493">Pt.ts:493</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L499">Pt.ts:499</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2035,7 +2063,7 @@ <h3>to<wbr>String</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#tostring">toString</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L485">Pt.ts:485</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L491">Pt.ts:491</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2058,7 +2086,7 @@ <h3>unit</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#unit">unit</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L257">Pt.ts:257</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L257">Pt.ts:257</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -3098,7 +3126,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> make</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#make">make</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L45">Pt.ts:45</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L45">Pt.ts:45</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -3984,6 +4012,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</s
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -4005,6 +4036,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</s
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
@@ -4170,6 +4204,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</s
 							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
 								<a href="_create_.noise.html#ops" class="tsd-kind-icon">ops</a>
 							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+								<a href="_create_.noise.html#projectscalar" class="tsd-kind-icon">project<wbr>Scalar</a>
+							</li>
 							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
 								<a href="_create_.noise.html#reflect2d" class="tsd-kind-icon">reflect2D</a>
 							</li>
diff --git a/docs/classes/_dom_.domspace.html b/docs/classes/_dom_.domspace.html
index acd47732..0b000c95 100644
--- a/docs/classes/_dom_.domspace.html
+++ b/docs/classes/_dom_.domspace.html
@@ -209,7 +209,7 @@ <h3>constructor</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L31">Dom.ts:31</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L35">Dom.ts:35</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -254,7 +254,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _auto<wbr>Resize</h
 					<div class="tsd-signature tsd-kind-icon">_auto<wbr>Resize<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;true</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L29">Dom.ts:29</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L33">Dom.ts:33</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -264,7 +264,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _bgcolor</h3>
 					<div class="tsd-signature tsd-kind-icon">_bgcolor<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;#e1e9f0&quot;</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L30">Dom.ts:30</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L34">Dom.ts:34</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -275,7 +275,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _canvas</h3>
 					<aside class="tsd-sources">
 						<p>Overrides <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_canvas">_canvas</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L25">Dom.ts:25</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L29">Dom.ts:29</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -285,7 +285,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _container</h3>
 					<div class="tsd-signature tsd-kind-icon">_container<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">Element</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L26">Dom.ts:26</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L30">Dom.ts:30</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -295,7 +295,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _css</h3>
 					<div class="tsd-signature tsd-kind-icon">_css<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">object</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L31">Dom.ts:31</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L35">Dom.ts:35</a></li>
 						</ul>
 					</aside>
 					<div class="tsd-type-declaration">
@@ -311,7 +311,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _ctx</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#_ctx">_ctx</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L47">Space.ts:47</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L47">Space.ts:47</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -322,7 +322,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _dragged</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_dragged">_dragged</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L307">Space.ts:307</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L307">Space.ts:307</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -333,7 +333,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _has<wbr>Mouse</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_hasmouse">_hasMouse</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L309">Space.ts:309</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L309">Space.ts:309</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -344,7 +344,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _has<wbr>Touch</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_hastouch">_hasTouch</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L310">Space.ts:310</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L310">Space.ts:310</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -355,7 +355,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _is<wbr>Ready</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#_isready">_isReady</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L57">Space.ts:57</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L57">Space.ts:57</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -366,7 +366,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _playing</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#_playing">_playing</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L58">Space.ts:58</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L58">Space.ts:58</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -377,7 +377,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _pointer</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#_pointer">_pointer</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L55">Space.ts:55</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L55">Space.ts:55</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -388,7 +388,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _pressed</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_pressed">_pressed</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L306">Space.ts:306</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L306">Space.ts:306</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -399,7 +399,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> bound</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#bound">bound</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L42">Space.ts:42</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L42">Space.ts:42</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -410,7 +410,7 @@ <h3>id</h3>
 					<aside class="tsd-sources">
 						<p>Overrides <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#id">id</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L28">Dom.ts:28</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L32">Dom.ts:32</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -421,7 +421,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> player<wbr>Count</h
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#playercount">playerCount</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L46">Space.ts:46</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L46">Space.ts:46</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -432,7 +432,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> players</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#players">players</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L45">Space.ts:45</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L45">Space.ts:45</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -450,7 +450,7 @@ <h3>auto<wbr>Resize</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L158">Dom.ts:158</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L162">Dom.ts:162</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -463,7 +463,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L148">Dom.ts:148</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L152">Dom.ts:152</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -497,7 +497,7 @@ <h3>background</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L242">Dom.ts:242</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L246">Dom.ts:246</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -510,7 +510,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</s
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L238">Dom.ts:238</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L242">Dom.ts:242</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -544,7 +544,7 @@ <h3>center</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#center">center</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L260">Space.ts:260</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L260">Space.ts:260</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -568,7 +568,7 @@ <h3>custom<wbr>Rendering</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#customrendering">customRendering</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L230">Space.ts:230</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L230">Space.ts:230</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -603,7 +603,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">null</spa
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#customrendering">customRendering</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L229">Space.ts:229</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L229">Space.ts:229</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -652,7 +652,7 @@ <h3>element</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L204">Dom.ts:204</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L208">Dom.ts:208</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -675,7 +675,7 @@ <h3>height</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#height">height</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L272">Space.ts:272</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L272">Space.ts:272</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -698,7 +698,7 @@ <h3>inner<wbr>Bound</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#innerbound">innerBound</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L248">Space.ts:248</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L248">Space.ts:248</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -721,7 +721,7 @@ <h3>is<wbr>Playing</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#isplaying">isPlaying</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L236">Space.ts:236</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L236">Space.ts:236</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -744,7 +744,7 @@ <h3>outer<wbr>Bound</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#outerbound">outerBound</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L242">Space.ts:242</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L242">Space.ts:242</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -766,7 +766,7 @@ <h3>parent</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L212">Dom.ts:212</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L216">Dom.ts:216</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -789,7 +789,7 @@ <h3>pointer</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#pointer">pointer</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L318">Space.ts:318</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L318">Space.ts:318</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -811,7 +811,7 @@ <h3>ready</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L220">Dom.ts:220</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L224">Dom.ts:224</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -834,7 +834,7 @@ <h3>size</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#size">size</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L254">Space.ts:254</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L254">Space.ts:254</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -857,7 +857,7 @@ <h3>width</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#width">width</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L266">Space.ts:266</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L266">Space.ts:266</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -883,7 +883,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Action</
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_mouseaction">_mouseAction</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L416">Space.ts:416</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L416">Space.ts:416</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -921,7 +921,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Down</h3
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_mousedown">_mouseDown</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L451">Space.ts:451</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L451">Space.ts:451</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -952,7 +952,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Move</h3
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_mousemove">_mouseMove</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L475">Space.ts:475</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L475">Space.ts:475</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -983,7 +983,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Out</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_mouseout">_mouseOut</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L499">Space.ts:499</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L499">Space.ts:499</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1014,7 +1014,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Over</h3
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_mouseover">_mouseOver</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L489">Space.ts:489</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L489">Space.ts:489</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1045,7 +1045,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Up</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_mouseup">_mouseUp</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L462">Space.ts:462</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L462">Space.ts:462</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1075,7 +1075,7 @@ <h3><span class="tsd-flag ts-flagPrivate">Private</span> _ready</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L95">Dom.ts:95</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L99">Dom.ts:99</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1105,7 +1105,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _resize<wbr>Handler
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L186">Dom.ts:186</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L190">Dom.ts:190</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1136,7 +1136,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _touch<wbr>Move</h3
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_touchmove">_touchMove</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L511">Space.ts:511</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L511">Space.ts:511</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1167,7 +1167,7 @@ <h3>add</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#add">add</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L80">Space.ts:80</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L80">Space.ts:80</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1203,7 +1203,7 @@ <h3>bind<wbr>Canvas</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#bindcanvas">bindCanvas</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L329">Space.ts:329</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L329">Space.ts:329</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1241,7 +1241,7 @@ <h3>bind<wbr>Mouse</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#bindmouse">bindMouse</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L349">Space.ts:349</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L349">Space.ts:349</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1278,7 +1278,7 @@ <h3>bind<wbr>Touch</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#bindtouch">bindTouch</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L374">Space.ts:374</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L374">Space.ts:374</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1315,7 +1315,7 @@ <h3>clear</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#clear">clear</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L227">Dom.ts:227</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L231">Dom.ts:231</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1347,7 +1347,7 @@ <h3>get<wbr>Form</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#getform">getForm</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L140">Dom.ts:140</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L144">Dom.ts:144</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1370,7 +1370,7 @@ <h3>pause</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#pause">pause</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L181">Space.ts:181</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L181">Space.ts:181</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1402,7 +1402,7 @@ <h3>play</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#play">play</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L121">Space.ts:121</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L121">Space.ts:121</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1435,7 +1435,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> play<wbr>Items</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#playitems">playItems</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L155">Space.ts:155</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L155">Space.ts:155</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1467,7 +1467,7 @@ <h3>play<wbr>Once</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#playonce">playOnce</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L210">Space.ts:210</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L210">Space.ts:210</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1499,7 +1499,7 @@ <h3>refresh</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#refresh">refresh</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L65">Space.ts:65</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L65">Space.ts:65</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1531,7 +1531,7 @@ <h3>remove</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#remove">remove</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L101">Space.ts:101</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L101">Space.ts:101</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1563,7 +1563,7 @@ <h3>remove<wbr>All</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#removeall">removeAll</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L110">Space.ts:110</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L110">Space.ts:110</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1586,7 +1586,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> render</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#render">render</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L220">Space.ts:220</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L220">Space.ts:220</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1618,7 +1618,7 @@ <h3>replay</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#replay">replay</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L145">Space.ts:145</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L145">Space.ts:145</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1642,7 +1642,7 @@ <h3>resize</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#resize">resize</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L166">Dom.ts:166</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L170">Dom.ts:170</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1680,7 +1680,7 @@ <h3>resume</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#resume">resume</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L190">Space.ts:190</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L190">Space.ts:190</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1702,7 +1702,7 @@ <h3>setup</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L126">Dom.ts:126</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L130">Dom.ts:130</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1753,7 +1753,7 @@ <h3>stop</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#stop">stop</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L200">Space.ts:200</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L200">Space.ts:200</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1784,7 +1784,7 @@ <h3>style</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L251">Dom.ts:251</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L255">Dom.ts:255</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1827,7 +1827,7 @@ <h3>styles</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L264">Dom.ts:264</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L268">Dom.ts:268</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1866,7 +1866,7 @@ <h3>touches<wbr>ToPoints</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#touchestopoints">touchesToPoints</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L400">Space.ts:400</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L400">Space.ts:400</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1905,7 +1905,7 @@ <h3>unbind<wbr>Canvas</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#unbindcanvas">unbindCanvas</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L339">Space.ts:339</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L339">Space.ts:339</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1942,7 +1942,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> create<wbr>Element</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L82">Dom.ts:82</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L86">Dom.ts:86</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1985,7 +1985,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> get<wbr>Inline<wbr>Styles
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L294">Dom.ts:294</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L298">Dom.ts:298</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2021,7 +2021,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> set<wbr>Attr</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L278">Dom.ts:278</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L282">Dom.ts:282</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2059,7 +2059,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _time</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#_time">_time</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L44">Space.ts:44</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L44">Space.ts:44</a></li>
 						</ul>
 					</aside>
 					<section class="tsd-panel tsd-member tsd-kind-variable tsd-parent-kind-object-literal">
@@ -2068,7 +2068,7 @@ <h3>diff</h3>
 						<div class="tsd-signature tsd-kind-icon">diff<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L44">Space.ts:44</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L44">Space.ts:44</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -2078,7 +2078,7 @@ <h3>end</h3>
 						<div class="tsd-signature tsd-kind-icon">end<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;-1</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L44">Space.ts:44</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L44">Space.ts:44</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -2088,7 +2088,7 @@ <h3>prev</h3>
 						<div class="tsd-signature tsd-kind-icon">prev<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L44">Space.ts:44</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L44">Space.ts:44</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -2128,6 +2128,9 @@ <h3>prev</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -2149,6 +2152,9 @@ <h3>prev</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/classes/_dom_.htmlform.html b/docs/classes/_dom_.htmlform.html
index 78168373..d41b23af 100644
--- a/docs/classes/_dom_.htmlform.html
+++ b/docs/classes/_dom_.htmlform.html
@@ -185,7 +185,7 @@ <h3>constructor</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L403">Dom.ts:403</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L407">Dom.ts:407</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -208,7 +208,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _filled</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#_filled">_filled</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L45">Form.ts:45</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L45">Form.ts:45</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -219,7 +219,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _font</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#_font">_font</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L53">Form.ts:53</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L53">Form.ts:53</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -230,7 +230,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _ready</h3>
 					<aside class="tsd-sources">
 						<p>Overrides <a href="_form_.form.html">Form</a>.<a href="_form_.form.html#_ready">_ready</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L403">Dom.ts:403</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L407">Dom.ts:407</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -240,7 +240,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _space</h3>
 					<div class="tsd-signature tsd-kind-icon">_space<span class="tsd-signature-symbol">:</span> <a href="_dom_.htmlspace.html" class="tsd-signature-type">HTMLSpace</a></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L402">Dom.ts:402</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L406">Dom.ts:406</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -251,7 +251,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _stroked</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#_stroked">_stroked</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L49">Form.ts:49</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L49">Form.ts:49</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -261,7 +261,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> domID</h3>
 					<div class="tsd-signature tsd-kind-icon">domID<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L400">Dom.ts:400</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L404">Dom.ts:404</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -271,7 +271,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> groupID</h3>
 					<div class="tsd-signature tsd-kind-icon">groupID<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L399">Dom.ts:399</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L403">Dom.ts:403</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -289,7 +289,7 @@ <h3>current<wbr>Font</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#currentfont">currentFont</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L54">Form.ts:54</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L54">Form.ts:54</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <a href="_form_.font.html" class="tsd-signature-type">Font</a></h4>
@@ -308,7 +308,7 @@ <h3>filled</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#filled">filled</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L46">Form.ts:46</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L46">Form.ts:46</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
@@ -317,7 +317,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#filled">filled</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L47">Form.ts:47</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L47">Form.ts:47</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -341,7 +341,7 @@ <h3>ready</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.form.html">Form</a>.<a href="_form_.form.html#ready">ready</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L19">Form.ts:19</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L19">Form.ts:19</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -363,7 +363,7 @@ <h3>space</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L416">Dom.ts:416</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L420">Dom.ts:420</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <a href="_dom_.htmlspace.html" class="tsd-signature-type">HTMLSpace</a></h4>
@@ -382,7 +382,7 @@ <h3>stroked</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#stroked">stroked</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L50">Form.ts:50</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L50">Form.ts:50</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
@@ -391,7 +391,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#stroked">stroked</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L51">Form.ts:51</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L51">Form.ts:51</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -418,7 +418,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _multiple</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#_multiple">_multiple</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L57">Form.ts:57</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L57">Form.ts:57</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -448,7 +448,7 @@ <h3>arc</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#arc">arc</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L800">Dom.ts:800</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L804">Dom.ts:804</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -489,7 +489,7 @@ <h3>circle</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#circle">circle</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L688">Dom.ts:688</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L692">Dom.ts:692</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -526,7 +526,7 @@ <h3>circles</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#circles">circles</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L147">Form.ts:147</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L147">Form.ts:147</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -557,7 +557,7 @@ <h3>cls</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L484">Dom.ts:484</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L488">Dom.ts:488</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -594,7 +594,7 @@ <h3>fill</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#fill">fill</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L436">Dom.ts:436</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L440">Dom.ts:440</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -631,7 +631,7 @@ <h3>fill<wbr>Only</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#fillonly">fillOnly</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L85">Form.ts:85</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L85">Form.ts:85</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -667,7 +667,7 @@ <h3>fill<wbr>Text</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L473">Dom.ts:473</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L477">Dom.ts:477</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -704,7 +704,7 @@ <h3>font</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#font">font</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L503">Dom.ts:503</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L507">Dom.ts:507</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -765,7 +765,7 @@ <h3>line</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#line">line</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L809">Dom.ts:809</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L813">Dom.ts:813</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -794,7 +794,7 @@ <h3>lines</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#lines">lines</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L183">Form.ts:183</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L183">Form.ts:183</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -825,7 +825,7 @@ <h3>log</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L791">Dom.ts:791</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L795">Dom.ts:795</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -856,7 +856,7 @@ <h3>nextID</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L565">Dom.ts:565</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L569">Dom.ts:569</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -880,7 +880,7 @@ <h3>point</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#point">point</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L660">Dom.ts:660</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L664">Dom.ts:664</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -926,7 +926,7 @@ <h3>points</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#points">points</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L125">Form.ts:125</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L125">Form.ts:125</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -970,7 +970,7 @@ <h3>polygon</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#polygon">polygon</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L819">Dom.ts:819</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L823">Dom.ts:823</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1001,7 +1001,7 @@ <h3>polygons</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#polygons">polygons</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L199">Form.ts:199</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L199">Form.ts:199</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1033,7 +1033,7 @@ <h3>rect</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#rect">rect</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L743">Dom.ts:743</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L747">Dom.ts:747</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1065,7 +1065,7 @@ <h3>rects</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#rects">rects</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L216">Form.ts:216</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L216">Form.ts:216</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1097,7 +1097,7 @@ <h3>reset</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#reset">reset</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L522">Dom.ts:522</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L526">Dom.ts:526</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1119,7 +1119,7 @@ <h3>scope</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L555">Dom.ts:555</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L559">Dom.ts:559</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1151,7 +1151,7 @@ <h3>square</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L716">Dom.ts:716</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L720">Dom.ts:720</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1189,7 +1189,7 @@ <h3>squares</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#squares">squares</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L156">Form.ts:156</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L156">Form.ts:156</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1221,7 +1221,7 @@ <h3>stroke</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#stroke">stroke</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L455">Dom.ts:455</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L459">Dom.ts:459</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1276,7 +1276,7 @@ <h3>stroke<wbr>Only</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#strokeonly">strokeOnly</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L104">Form.ts:104</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L104">Form.ts:104</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1321,7 +1321,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> style<wbr>To</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L425">Dom.ts:425</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L429">Dom.ts:429</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1365,7 +1365,7 @@ <h3>text</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#text">text</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L780">Dom.ts:780</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L784">Dom.ts:784</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1396,7 +1396,7 @@ <h3>update<wbr>Scope</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L541">Dom.ts:541</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L545">Dom.ts:545</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1435,7 +1435,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> _check<wbr>Size</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.form.html">Form</a>.<a href="_form_.form.html#_checksize">_checkSize</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L26">Form.ts:26</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L26">Form.ts:26</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1468,7 +1468,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> circle</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L674">Dom.ts:674</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L678">Dom.ts:678</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1511,7 +1511,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> getID</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L576">Dom.ts:576</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L580">Dom.ts:580</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1542,7 +1542,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> point</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L644">Dom.ts:644</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L648">Dom.ts:648</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1596,7 +1596,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> rect</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L728">Dom.ts:728</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L732">Dom.ts:732</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1633,7 +1633,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> rect<wbr>Style</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L628">Dom.ts:628</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L632">Dom.ts:632</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1667,7 +1667,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> scopeID</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L585">Dom.ts:585</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L589">Dom.ts:589</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1698,7 +1698,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> square</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L702">Dom.ts:702</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L706">Dom.ts:706</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1741,7 +1741,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> style</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L597">Dom.ts:597</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L601">Dom.ts:601</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1784,7 +1784,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> text</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L758">Dom.ts:758</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L762">Dom.ts:762</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1820,7 +1820,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _ctx</h3>
 					<div class="tsd-signature tsd-kind-icon">_ctx<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">object</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L373">Dom.ts:373</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L377">Dom.ts:377</a></li>
 						</ul>
 					</aside>
 					<section class="tsd-panel tsd-member tsd-kind-variable tsd-parent-kind-object-literal">
@@ -1829,7 +1829,7 @@ <h3>current<wbr>Class</h3>
 						<div class="tsd-signature tsd-kind-icon">current<wbr>Class<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;&quot;</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L378">Dom.ts:378</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L382">Dom.ts:382</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -1839,7 +1839,7 @@ <h3>currentID</h3>
 						<div class="tsd-signature tsd-kind-icon">currentID<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;pts0&quot;</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L377">Dom.ts:377</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L381">Dom.ts:381</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -1849,7 +1849,7 @@ <h3>font</h3>
 						<div class="tsd-signature tsd-kind-icon">font<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;11px sans-serif&quot;</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L394">Dom.ts:394</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L398">Dom.ts:398</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -1859,7 +1859,7 @@ <h3>font<wbr>Family</h3>
 						<div class="tsd-signature tsd-kind-icon">font<wbr>Family<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;sans-serif&quot;</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L396">Dom.ts:396</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L400">Dom.ts:400</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -1869,7 +1869,7 @@ <h3>font<wbr>Size</h3>
 						<div class="tsd-signature tsd-kind-icon">font<wbr>Size<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;11</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L395">Dom.ts:395</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L399">Dom.ts:399</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -1879,7 +1879,7 @@ <h3>group</h3>
 						<div class="tsd-signature tsd-kind-icon">group<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">null</span><span class="tsd-signature-symbol"> =&nbsp;null</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L374">Dom.ts:374</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L378">Dom.ts:378</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -1889,7 +1889,7 @@ <h3>group<wbr>Count</h3>
 						<div class="tsd-signature tsd-kind-icon">group<wbr>Count<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L376">Dom.ts:376</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L380">Dom.ts:380</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -1899,7 +1899,7 @@ <h3>groupID</h3>
 						<div class="tsd-signature tsd-kind-icon">groupID<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;pts&quot;</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L375">Dom.ts:375</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L379">Dom.ts:379</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -1909,7 +1909,7 @@ <h3>style</h3>
 						<div class="tsd-signature tsd-kind-icon">style<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">object</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L379">Dom.ts:379</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L383">Dom.ts:383</a></li>
 							</ul>
 						</aside>
 						<section class="tsd-panel tsd-member tsd-kind-variable tsd-parent-kind-object-literal">
@@ -1918,7 +1918,7 @@ <h3>background</h3>
 							<div class="tsd-signature tsd-kind-icon">background<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;#f03&quot;</span></div>
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L382">Dom.ts:382</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L386">Dom.ts:386</a></li>
 								</ul>
 							</aside>
 						</section>
@@ -1928,7 +1928,7 @@ <h3>border-<wbr>color</h3>
 							<div class="tsd-signature tsd-kind-icon">border-<wbr>color<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;#fff&quot;</span></div>
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L383">Dom.ts:383</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L387">Dom.ts:387</a></li>
 								</ul>
 							</aside>
 						</section>
@@ -1938,7 +1938,7 @@ <h3>border-<wbr>radius</h3>
 							<div class="tsd-signature tsd-kind-icon">border-<wbr>radius<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;0&quot;</span></div>
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L386">Dom.ts:386</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L390">Dom.ts:390</a></li>
 								</ul>
 							</aside>
 						</section>
@@ -1948,7 +1948,7 @@ <h3>border-<wbr>style</h3>
 							<div class="tsd-signature tsd-kind-icon">border-<wbr>style<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;solid&quot;</span></div>
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L387">Dom.ts:387</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L391">Dom.ts:391</a></li>
 								</ul>
 							</aside>
 						</section>
@@ -1958,7 +1958,7 @@ <h3>border-<wbr>width</h3>
 							<div class="tsd-signature tsd-kind-icon">border-<wbr>width<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;1px&quot;</span></div>
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L385">Dom.ts:385</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L389">Dom.ts:389</a></li>
 								</ul>
 							</aside>
 						</section>
@@ -1968,7 +1968,7 @@ <h3>color</h3>
 							<div class="tsd-signature tsd-kind-icon">color<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;#000&quot;</span></div>
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L384">Dom.ts:384</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L388">Dom.ts:388</a></li>
 								</ul>
 							</aside>
 						</section>
@@ -1978,7 +1978,7 @@ <h3>filled</h3>
 							<div class="tsd-signature tsd-kind-icon">filled<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;true</span></div>
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L380">Dom.ts:380</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L384">Dom.ts:384</a></li>
 								</ul>
 							</aside>
 						</section>
@@ -1988,7 +1988,7 @@ <h3>height</h3>
 							<div class="tsd-signature tsd-kind-icon">height<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L392">Dom.ts:392</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L396">Dom.ts:396</a></li>
 								</ul>
 							</aside>
 						</section>
@@ -1998,7 +1998,7 @@ <h3>left</h3>
 							<div class="tsd-signature tsd-kind-icon">left<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L390">Dom.ts:390</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L394">Dom.ts:394</a></li>
 								</ul>
 							</aside>
 						</section>
@@ -2008,7 +2008,7 @@ <h3>position</h3>
 							<div class="tsd-signature tsd-kind-icon">position<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;absolute&quot;</span></div>
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L388">Dom.ts:388</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L392">Dom.ts:392</a></li>
 								</ul>
 							</aside>
 						</section>
@@ -2018,7 +2018,7 @@ <h3>stroked</h3>
 							<div class="tsd-signature tsd-kind-icon">stroked<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;true</span></div>
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L381">Dom.ts:381</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L385">Dom.ts:385</a></li>
 								</ul>
 							</aside>
 						</section>
@@ -2028,7 +2028,7 @@ <h3>top</h3>
 							<div class="tsd-signature tsd-kind-icon">top<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L389">Dom.ts:389</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L393">Dom.ts:393</a></li>
 								</ul>
 							</aside>
 						</section>
@@ -2038,7 +2038,7 @@ <h3>width</h3>
 							<div class="tsd-signature tsd-kind-icon">width<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L391">Dom.ts:391</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L395">Dom.ts:395</a></li>
 								</ul>
 							</aside>
 						</section>
@@ -2079,6 +2079,9 @@ <h3>width</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -2100,6 +2103,9 @@ <h3>width</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/classes/_dom_.htmlspace.html b/docs/classes/_dom_.htmlspace.html
index a5ced424..ec9eb17c 100644
--- a/docs/classes/_dom_.htmlspace.html
+++ b/docs/classes/_dom_.htmlspace.html
@@ -202,7 +202,7 @@ <h3>constructor</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#constructor">constructor</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L31">Dom.ts:31</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L35">Dom.ts:35</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -248,7 +248,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _auto<wbr>Resize</h
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#_autoresize">_autoResize</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L29">Dom.ts:29</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L33">Dom.ts:33</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -259,7 +259,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _bgcolor</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#_bgcolor">_bgcolor</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L30">Dom.ts:30</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L34">Dom.ts:34</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -271,7 +271,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _canvas</h3>
 						<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#_canvas">_canvas</a></p>
 						<p>Overrides <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_canvas">_canvas</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L25">Dom.ts:25</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L29">Dom.ts:29</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -282,7 +282,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _container</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#_container">_container</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L26">Dom.ts:26</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L30">Dom.ts:30</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -293,7 +293,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _css</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#_css">_css</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L31">Dom.ts:31</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L35">Dom.ts:35</a></li>
 						</ul>
 					</aside>
 					<div class="tsd-type-declaration">
@@ -309,7 +309,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _ctx</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#_ctx">_ctx</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L47">Space.ts:47</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L47">Space.ts:47</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -320,7 +320,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _dragged</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_dragged">_dragged</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L307">Space.ts:307</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L307">Space.ts:307</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -331,7 +331,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _has<wbr>Mouse</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_hasmouse">_hasMouse</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L309">Space.ts:309</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L309">Space.ts:309</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -342,7 +342,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _has<wbr>Touch</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_hastouch">_hasTouch</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L310">Space.ts:310</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L310">Space.ts:310</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -353,7 +353,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _is<wbr>Ready</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#_isready">_isReady</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L57">Space.ts:57</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L57">Space.ts:57</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -364,7 +364,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _playing</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#_playing">_playing</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L58">Space.ts:58</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L58">Space.ts:58</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -375,7 +375,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _pointer</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#_pointer">_pointer</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L55">Space.ts:55</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L55">Space.ts:55</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -386,7 +386,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _pressed</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_pressed">_pressed</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L306">Space.ts:306</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L306">Space.ts:306</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -397,7 +397,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> bound</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#bound">bound</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L42">Space.ts:42</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L42">Space.ts:42</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -409,7 +409,7 @@ <h3>id</h3>
 						<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#id">id</a></p>
 						<p>Overrides <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#id">id</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L28">Dom.ts:28</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L32">Dom.ts:32</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -420,7 +420,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> player<wbr>Count</h
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#playercount">playerCount</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L46">Space.ts:46</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L46">Space.ts:46</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -431,7 +431,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> players</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#players">players</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L45">Space.ts:45</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L45">Space.ts:45</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -450,7 +450,7 @@ <h3>auto<wbr>Resize</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#autoresize">autoResize</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L158">Dom.ts:158</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L162">Dom.ts:162</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -464,7 +464,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#autoresize">autoResize</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L148">Dom.ts:148</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L152">Dom.ts:152</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -499,7 +499,7 @@ <h3>background</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#background">background</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L242">Dom.ts:242</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L246">Dom.ts:246</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -513,7 +513,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</s
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#background">background</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L238">Dom.ts:238</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L242">Dom.ts:242</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -547,7 +547,7 @@ <h3>center</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#center">center</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L260">Space.ts:260</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L260">Space.ts:260</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -571,7 +571,7 @@ <h3>custom<wbr>Rendering</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#customrendering">customRendering</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L230">Space.ts:230</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L230">Space.ts:230</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -606,7 +606,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">null</spa
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#customrendering">customRendering</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L229">Space.ts:229</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L229">Space.ts:229</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -656,7 +656,7 @@ <h3>element</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#element">element</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L204">Dom.ts:204</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L208">Dom.ts:208</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -679,7 +679,7 @@ <h3>height</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#height">height</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L272">Space.ts:272</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L272">Space.ts:272</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -702,7 +702,7 @@ <h3>inner<wbr>Bound</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#innerbound">innerBound</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L248">Space.ts:248</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L248">Space.ts:248</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -725,7 +725,7 @@ <h3>is<wbr>Playing</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#isplaying">isPlaying</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L236">Space.ts:236</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L236">Space.ts:236</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -748,7 +748,7 @@ <h3>outer<wbr>Bound</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#outerbound">outerBound</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L242">Space.ts:242</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L242">Space.ts:242</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -771,7 +771,7 @@ <h3>parent</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#parent">parent</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L212">Dom.ts:212</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L216">Dom.ts:216</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -794,7 +794,7 @@ <h3>pointer</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#pointer">pointer</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L318">Space.ts:318</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L318">Space.ts:318</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -817,7 +817,7 @@ <h3>ready</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#ready">ready</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L220">Dom.ts:220</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L224">Dom.ts:224</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -840,7 +840,7 @@ <h3>size</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#size">size</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L254">Space.ts:254</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L254">Space.ts:254</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -863,7 +863,7 @@ <h3>width</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#width">width</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L266">Space.ts:266</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L266">Space.ts:266</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -889,7 +889,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Action</
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_mouseaction">_mouseAction</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L416">Space.ts:416</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L416">Space.ts:416</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -927,7 +927,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Down</h3
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_mousedown">_mouseDown</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L451">Space.ts:451</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L451">Space.ts:451</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -958,7 +958,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Move</h3
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_mousemove">_mouseMove</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L475">Space.ts:475</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L475">Space.ts:475</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -989,7 +989,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Out</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_mouseout">_mouseOut</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L499">Space.ts:499</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L499">Space.ts:499</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1020,7 +1020,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Over</h3
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_mouseover">_mouseOver</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L489">Space.ts:489</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L489">Space.ts:489</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1051,7 +1051,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Up</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_mouseup">_mouseUp</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L462">Space.ts:462</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L462">Space.ts:462</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1082,7 +1082,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _resize<wbr>Handler
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#_resizehandler">_resizeHandler</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L186">Dom.ts:186</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L190">Dom.ts:190</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1113,7 +1113,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _touch<wbr>Move</h3
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_touchmove">_touchMove</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L511">Space.ts:511</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L511">Space.ts:511</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1144,7 +1144,7 @@ <h3>add</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#add">add</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L80">Space.ts:80</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L80">Space.ts:80</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1180,7 +1180,7 @@ <h3>bind<wbr>Canvas</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#bindcanvas">bindCanvas</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L329">Space.ts:329</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L329">Space.ts:329</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1218,7 +1218,7 @@ <h3>bind<wbr>Mouse</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#bindmouse">bindMouse</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L349">Space.ts:349</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L349">Space.ts:349</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1255,7 +1255,7 @@ <h3>bind<wbr>Touch</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#bindtouch">bindTouch</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L374">Space.ts:374</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L374">Space.ts:374</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1293,7 +1293,7 @@ <h3>clear</h3>
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#clear">clear</a></p>
 								<p>Overrides <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#clear">clear</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L227">Dom.ts:227</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L231">Dom.ts:231</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1325,7 +1325,7 @@ <h3>get<wbr>Form</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#getform">getForm</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L316">Dom.ts:316</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L320">Dom.ts:320</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1353,7 +1353,7 @@ <h3>pause</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#pause">pause</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L181">Space.ts:181</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L181">Space.ts:181</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1385,7 +1385,7 @@ <h3>play</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#play">play</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L121">Space.ts:121</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L121">Space.ts:121</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1418,7 +1418,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> play<wbr>Items</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#playitems">playItems</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L155">Space.ts:155</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L155">Space.ts:155</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1450,7 +1450,7 @@ <h3>play<wbr>Once</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#playonce">playOnce</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L210">Space.ts:210</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L210">Space.ts:210</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1482,7 +1482,7 @@ <h3>refresh</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#refresh">refresh</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L65">Space.ts:65</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L65">Space.ts:65</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1514,7 +1514,7 @@ <h3>remove</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#remove">remove</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L347">Dom.ts:347</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L351">Dom.ts:351</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1543,7 +1543,7 @@ <h3>remove<wbr>All</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#removeall">removeAll</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L361">Dom.ts:361</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L365">Dom.ts:365</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1566,7 +1566,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> render</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#render">render</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L220">Space.ts:220</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L220">Space.ts:220</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1598,7 +1598,7 @@ <h3>replay</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#replay">replay</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L145">Space.ts:145</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L145">Space.ts:145</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1623,7 +1623,7 @@ <h3>resize</h3>
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#resize">resize</a></p>
 								<p>Overrides <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#resize">resize</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L166">Dom.ts:166</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L170">Dom.ts:170</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1661,7 +1661,7 @@ <h3>resume</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#resume">resume</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L190">Space.ts:190</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L190">Space.ts:190</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1684,7 +1684,7 @@ <h3>setup</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#setup">setup</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L126">Dom.ts:126</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L130">Dom.ts:130</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1735,7 +1735,7 @@ <h3>stop</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#stop">stop</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L200">Space.ts:200</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L200">Space.ts:200</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1767,7 +1767,7 @@ <h3>style</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#style">style</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L251">Dom.ts:251</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L255">Dom.ts:255</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1811,7 +1811,7 @@ <h3>styles</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#styles">styles</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L264">Dom.ts:264</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L268">Dom.ts:268</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1850,7 +1850,7 @@ <h3>touches<wbr>ToPoints</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#touchestopoints">touchesToPoints</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L400">Space.ts:400</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L400">Space.ts:400</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1889,7 +1889,7 @@ <h3>unbind<wbr>Canvas</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#unbindcanvas">unbindCanvas</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L339">Space.ts:339</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L339">Space.ts:339</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1927,7 +1927,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> create<wbr>Element</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#createelement">createElement</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L82">Dom.ts:82</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L86">Dom.ts:86</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1971,7 +1971,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> get<wbr>Inline<wbr>Styles
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#getinlinestyles">getInlineStyles</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L294">Dom.ts:294</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L298">Dom.ts:298</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2007,7 +2007,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> html<wbr>Element</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L327">Dom.ts:327</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L331">Dom.ts:331</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2057,7 +2057,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> set<wbr>Attr</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#setattr">setAttr</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L278">Dom.ts:278</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L282">Dom.ts:282</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2095,7 +2095,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _time</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#_time">_time</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L44">Space.ts:44</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L44">Space.ts:44</a></li>
 						</ul>
 					</aside>
 					<section class="tsd-panel tsd-member tsd-kind-variable tsd-parent-kind-object-literal">
@@ -2104,7 +2104,7 @@ <h3>diff</h3>
 						<div class="tsd-signature tsd-kind-icon">diff<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L44">Space.ts:44</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L44">Space.ts:44</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -2114,7 +2114,7 @@ <h3>end</h3>
 						<div class="tsd-signature tsd-kind-icon">end<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;-1</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L44">Space.ts:44</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L44">Space.ts:44</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -2124,7 +2124,7 @@ <h3>prev</h3>
 						<div class="tsd-signature tsd-kind-icon">prev<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L44">Space.ts:44</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L44">Space.ts:44</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -2164,6 +2164,9 @@ <h3>prev</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -2185,6 +2188,9 @@ <h3>prev</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/classes/_form_.font.html b/docs/classes/_form_.font.html
index ebfebe5e..bdb91c23 100644
--- a/docs/classes/_form_.font.html
+++ b/docs/classes/_form_.font.html
@@ -131,7 +131,7 @@ <h3>constructor</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L253">Form.ts:253</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L253">Form.ts:253</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -200,7 +200,7 @@ <h3>face</h3>
 					<div class="tsd-signature tsd-kind-icon">face<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L251">Form.ts:251</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L251">Form.ts:251</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -210,7 +210,7 @@ <h3>line<wbr>Height</h3>
 					<div class="tsd-signature tsd-kind-icon">line<wbr>Height<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L250">Form.ts:250</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L250">Form.ts:250</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -220,7 +220,7 @@ <h3>size</h3>
 					<div class="tsd-signature tsd-kind-icon">size<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L249">Form.ts:249</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L249">Form.ts:249</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -230,7 +230,7 @@ <h3>style</h3>
 					<div class="tsd-signature tsd-kind-icon">style<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L252">Form.ts:252</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L252">Form.ts:252</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -240,7 +240,7 @@ <h3>weight</h3>
 					<div class="tsd-signature tsd-kind-icon">weight<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L253">Form.ts:253</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L253">Form.ts:253</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -257,7 +257,7 @@ <h3>value</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L275">Form.ts:275</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L275">Form.ts:275</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -282,7 +282,7 @@ <h3>to<wbr>String</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L281">Form.ts:281</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L281">Form.ts:281</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -329,6 +329,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</s
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -350,6 +353,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</s
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/classes/_form_.form.html b/docs/classes/_form_.form.html
index fdba094b..1b1e454a 100644
--- a/docs/classes/_form_.form.html
+++ b/docs/classes/_form_.form.html
@@ -122,7 +122,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _ready</h3>
 					<div class="tsd-signature tsd-kind-icon">_ready<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;false</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L14">Form.ts:14</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L14">Form.ts:14</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -139,7 +139,7 @@ <h3>ready</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L19">Form.ts:19</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L19">Form.ts:19</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -164,7 +164,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> _check<wbr>Size</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L26">Form.ts:26</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L26">Form.ts:26</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -222,6 +222,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -243,6 +246,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/classes/_form_.visualform.html b/docs/classes/_form_.visualform.html
index 55ba3d6f..770004d5 100644
--- a/docs/classes/_form_.visualform.html
+++ b/docs/classes/_form_.visualform.html
@@ -160,7 +160,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _filled</h3>
 					<div class="tsd-signature tsd-kind-icon">_filled<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;true</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L45">Form.ts:45</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L45">Form.ts:45</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -170,7 +170,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _font</h3>
 					<div class="tsd-signature tsd-kind-icon">_font<span class="tsd-signature-symbol">:</span> <a href="_form_.font.html" class="tsd-signature-type">Font</a><span class="tsd-signature-symbol"> =&nbsp;new Font( 14, &quot;sans-serif&quot;)</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L53">Form.ts:53</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L53">Form.ts:53</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -181,7 +181,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _ready</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_form_.form.html">Form</a>.<a href="_form_.form.html#_ready">_ready</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L14">Form.ts:14</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L14">Form.ts:14</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -191,7 +191,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _stroked</h3>
 					<div class="tsd-signature tsd-kind-icon">_stroked<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;true</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L49">Form.ts:49</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L49">Form.ts:49</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -208,7 +208,7 @@ <h3>current<wbr>Font</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L54">Form.ts:54</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L54">Form.ts:54</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <a href="_form_.font.html" class="tsd-signature-type">Font</a></h4>
@@ -226,7 +226,7 @@ <h3>filled</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L46">Form.ts:46</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L46">Form.ts:46</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
@@ -234,7 +234,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L47">Form.ts:47</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L47">Form.ts:47</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -258,7 +258,7 @@ <h3>ready</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.form.html">Form</a>.<a href="_form_.form.html#ready">ready</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L19">Form.ts:19</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L19">Form.ts:19</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -281,7 +281,7 @@ <h3>stroked</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L50">Form.ts:50</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L50">Form.ts:50</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
@@ -289,7 +289,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L51">Form.ts:51</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L51">Form.ts:51</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -315,7 +315,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _multiple</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L57">Form.ts:57</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L57">Form.ts:57</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -344,7 +344,7 @@ <h3>arc</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L169">Form.ts:169</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L169">Form.ts:169</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -399,7 +399,7 @@ <h3>circle</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L139">Form.ts:139</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L139">Form.ts:139</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -435,7 +435,7 @@ <h3>circles</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L147">Form.ts:147</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L147">Form.ts:147</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -466,7 +466,7 @@ <h3>fill</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L75">Form.ts:75</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L75">Form.ts:75</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -494,7 +494,7 @@ <h3>fill<wbr>Only</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L85">Form.ts:85</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L85">Form.ts:85</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -530,7 +530,7 @@ <h3>font</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L240">Form.ts:240</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L240">Form.ts:240</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -593,7 +593,7 @@ <h3>line</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L176">Form.ts:176</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L176">Form.ts:176</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -624,7 +624,7 @@ <h3>lines</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L183">Form.ts:183</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L183">Form.ts:183</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -655,7 +655,7 @@ <h3>point</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L116">Form.ts:116</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L116">Form.ts:116</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -703,7 +703,7 @@ <h3>points</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L125">Form.ts:125</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L125">Form.ts:125</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -746,7 +746,7 @@ <h3>polygon</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L192">Form.ts:192</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L192">Form.ts:192</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -777,7 +777,7 @@ <h3>polygons</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L199">Form.ts:199</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L199">Form.ts:199</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -808,7 +808,7 @@ <h3>rect</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L209">Form.ts:209</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L209">Form.ts:209</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -839,7 +839,7 @@ <h3>rects</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L216">Form.ts:216</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L216">Form.ts:216</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -870,7 +870,7 @@ <h3>reset</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L69">Form.ts:69</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L69">Form.ts:69</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -892,7 +892,7 @@ <h3>squares</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L156">Form.ts:156</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L156">Form.ts:156</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -923,7 +923,7 @@ <h3>stroke</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L94">Form.ts:94</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L94">Form.ts:94</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -960,7 +960,7 @@ <h3>stroke<wbr>Only</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L104">Form.ts:104</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L104">Form.ts:104</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -1005,7 +1005,7 @@ <h3>text</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L227">Form.ts:227</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L227">Form.ts:227</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -1040,7 +1040,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> _check<wbr>Size</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.form.html">Form</a>.<a href="_form_.form.html#_checksize">_checkSize</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L26">Form.ts:26</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L26">Form.ts:26</a></li>
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@@ -1098,6 +1098,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
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@@ -1119,6 +1122,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
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 			</nav>
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diff --git a/docs/classes/_linearalgebra_.mat.html b/docs/classes/_linearalgebra_.mat.html
index 73393e33..bd8a8563 100644
--- a/docs/classes/_linearalgebra_.mat.html
+++ b/docs/classes/_linearalgebra_.mat.html
@@ -122,7 +122,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> add</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L222">LinearAlgebra.ts:222</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L222">LinearAlgebra.ts:222</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -160,7 +160,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> multiply</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L246">LinearAlgebra.ts:246</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L246">LinearAlgebra.ts:246</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -210,7 +210,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> reflect<wbr>At2DMatrix</h
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L423">LinearAlgebra.ts:423</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L423">LinearAlgebra.ts:423</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -246,7 +246,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> rotate2DMatrix</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L352">LinearAlgebra.ts:352</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L352">LinearAlgebra.ts:352</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -277,7 +277,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> rotate<wbr>At2DMatrix</h3
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L399">LinearAlgebra.ts:399</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L399">LinearAlgebra.ts:399</a></li>
 								</ul>
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 							<div class="tsd-comment tsd-typography">
@@ -311,7 +311,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> scale2DMatrix</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L340">LinearAlgebra.ts:340</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L340">LinearAlgebra.ts:340</a></li>
 								</ul>
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 							<div class="tsd-comment tsd-typography">
@@ -342,7 +342,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> scale<wbr>At2DMatrix</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L388">LinearAlgebra.ts:388</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L388">LinearAlgebra.ts:388</a></li>
 								</ul>
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 							<div class="tsd-comment tsd-typography">
@@ -376,7 +376,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> shear2DMatrix</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L364">LinearAlgebra.ts:364</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L364">LinearAlgebra.ts:364</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -407,7 +407,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> shear<wbr>At2DMatrix</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L410">LinearAlgebra.ts:410</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L410">LinearAlgebra.ts:410</a></li>
 								</ul>
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 							<div class="tsd-comment tsd-typography">
@@ -441,7 +441,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> transform2D</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L330">LinearAlgebra.ts:330</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L330">LinearAlgebra.ts:330</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -479,7 +479,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> translate2DMatrix</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L376">LinearAlgebra.ts:376</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L376">LinearAlgebra.ts:376</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -510,7 +510,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> transpose</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L319">LinearAlgebra.ts:319</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L319">LinearAlgebra.ts:319</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -544,7 +544,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> zip</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L306">LinearAlgebra.ts:306</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L306">LinearAlgebra.ts:306</a></li>
 								</ul>
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 							<div class="tsd-comment tsd-typography">
@@ -587,7 +587,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> zip<wbr>Slice</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L290">LinearAlgebra.ts:290</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L290">LinearAlgebra.ts:290</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -652,6 +652,9 @@ <h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signatur
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
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@@ -673,6 +676,9 @@ <h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signatur
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
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 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/classes/_linearalgebra_.vec.html b/docs/classes/_linearalgebra_.vec.html
index 81840d58..574e604d 100644
--- a/docs/classes/_linearalgebra_.vec.html
+++ b/docs/classes/_linearalgebra_.vec.html
@@ -125,7 +125,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> abs</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L125">LinearAlgebra.ts:125</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L125">LinearAlgebra.ts:125</a></li>
 								</ul>
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 							<div class="tsd-comment tsd-typography">
@@ -154,7 +154,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> add</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L18">LinearAlgebra.ts:18</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L18">LinearAlgebra.ts:18</a></li>
 								</ul>
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 							<div class="tsd-comment tsd-typography">
@@ -186,7 +186,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> ceil</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L143">LinearAlgebra.ts:143</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L143">LinearAlgebra.ts:143</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -215,7 +215,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> cross</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L98">LinearAlgebra.ts:98</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L98">LinearAlgebra.ts:98</a></li>
 								</ul>
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 							<div class="tsd-comment tsd-typography">
@@ -246,7 +246,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> cross2D</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L91">LinearAlgebra.ts:91</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L91">LinearAlgebra.ts:91</a></li>
 								</ul>
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 							<div class="tsd-comment tsd-typography">
@@ -277,7 +277,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> divide</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L61">LinearAlgebra.ts:61</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L61">LinearAlgebra.ts:61</a></li>
 								</ul>
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 							<div class="tsd-comment tsd-typography">
@@ -309,7 +309,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> dot</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L78">LinearAlgebra.ts:78</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L78">LinearAlgebra.ts:78</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -340,7 +340,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> floor</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L134">LinearAlgebra.ts:134</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L134">LinearAlgebra.ts:134</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -369,7 +369,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> magnitude</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L106">LinearAlgebra.ts:106</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L106">LinearAlgebra.ts:106</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -397,7 +397,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> map</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L201">LinearAlgebra.ts:201</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L201">LinearAlgebra.ts:201</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -453,7 +453,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> max</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L161">LinearAlgebra.ts:161</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L161">LinearAlgebra.ts:161</a></li>
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@@ -490,7 +490,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> min</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
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-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L176">LinearAlgebra.ts:176</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L176">LinearAlgebra.ts:176</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -527,7 +527,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> multiply</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L44">LinearAlgebra.ts:44</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L44">LinearAlgebra.ts:44</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -559,7 +559,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> round</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L152">LinearAlgebra.ts:152</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L152">LinearAlgebra.ts:152</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -588,7 +588,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> subtract</h3>
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 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L31">LinearAlgebra.ts:31</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L31">LinearAlgebra.ts:31</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -620,7 +620,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> sum</h3>
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 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L190">LinearAlgebra.ts:190</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L190">LinearAlgebra.ts:190</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -648,7 +648,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> unit</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/LinearAlgebra.ts#L114">LinearAlgebra.ts:114</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/LinearAlgebra.ts#L114">LinearAlgebra.ts:114</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -704,6 +704,9 @@ <h4 class="tsd-returns-title">Returns <a href="../modules/_pt_.html#ptlike" clas
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -725,6 +728,9 @@ <h4 class="tsd-returns-title">Returns <a href="../modules/_pt_.html#ptlike" clas
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/classes/_num_.geom.html b/docs/classes/_num_.geom.html
index f772065d..e7b1a114 100644
--- a/docs/classes/_num_.geom.html
+++ b/docs/classes/_num_.geom.html
@@ -126,7 +126,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> anchor</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L219">Num.ts:219</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L219">Num.ts:219</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -169,7 +169,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> bound<wbr>Angle</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L162">Num.ts:162</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L162">Num.ts:162</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -197,7 +197,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> bound<wbr>Radian</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L170">Num.ts:170</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L170">Num.ts:170</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -225,7 +225,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> bounding<wbr>Box</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L196">Num.ts:196</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L196">Num.ts:196</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -257,7 +257,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> centroid</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L208">Num.ts:208</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L208">Num.ts:208</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -289,7 +289,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> cos<wbr>Table</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L420">Num.ts:420</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L421">Num.ts:421</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -320,7 +320,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> interpolate</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L238">Num.ts:238</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L238">Num.ts:238</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -364,7 +364,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> is<wbr>Perpendicular</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L272">Num.ts:272</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L272">Num.ts:272</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -395,7 +395,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> perpendicular</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L253">Num.ts:253</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L253">Num.ts:253</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -430,7 +430,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> reflect2D</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L404">Num.ts:404</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L404">Num.ts:404</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -473,7 +473,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> rotate2D</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L358">Num.ts:358</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L358">Num.ts:358</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -522,7 +522,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> scale</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L335">Num.ts:335</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L335">Num.ts:335</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -565,7 +565,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> shear2D</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L381">Num.ts:381</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L381">Num.ts:381</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -614,7 +614,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> sin<wbr>Table</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L433">Num.ts:433</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L434">Num.ts:434</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -645,7 +645,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> sort<wbr>Edges</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L296">Num.ts:296</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L296">Num.ts:296</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -677,7 +677,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> to<wbr>Degree</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L186">Num.ts:186</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L186">Num.ts:186</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -705,7 +705,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> to<wbr>Radian</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L178">Num.ts:178</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L178">Num.ts:178</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -733,7 +733,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> within<wbr>Bound</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L283">Num.ts:283</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L283">Num.ts:283</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -801,6 +801,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -822,6 +825,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/classes/_num_.num.html b/docs/classes/_num_.num.html
index c1374351..b3e9f18f 100644
--- a/docs/classes/_num_.num.html
+++ b/docs/classes/_num_.num.html
@@ -119,7 +119,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> average</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L120">Num.ts:120</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L120">Num.ts:120</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -151,7 +151,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> bound<wbr>Value</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L55">Num.ts:55</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L55">Num.ts:55</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -199,7 +199,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> clamp</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L43">Num.ts:43</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L43">Num.ts:43</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -242,7 +242,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> cycle</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L130">Num.ts:130</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L130">Num.ts:130</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -274,7 +274,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> equals</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L21">Num.ts:21</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L21">Num.ts:21</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -317,7 +317,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> lerp</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L32">Num.ts:32</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L32">Num.ts:32</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -360,7 +360,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> map<wbr>ToRange</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L144">Num.ts:144</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L144">Num.ts:144</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -404,7 +404,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> normalize<wbr>Value</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L94">Num.ts:94</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L94">Num.ts:94</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -447,7 +447,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> random<wbr>Range</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L82">Num.ts:82</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L82">Num.ts:82</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -484,7 +484,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> sum</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L106">Num.ts:106</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L106">Num.ts:106</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -516,7 +516,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> within</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L72">Num.ts:72</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L72">Num.ts:72</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -577,6 +577,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -598,6 +601,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/classes/_num_.range.html b/docs/classes/_num_.range.html
index b09d8ef0..5423b681 100644
--- a/docs/classes/_num_.range.html
+++ b/docs/classes/_num_.range.html
@@ -137,7 +137,7 @@ <h3>constructor</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L810">Num.ts:810</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L811">Num.ts:811</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -169,7 +169,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _dims</h3>
 					<div class="tsd-signature tsd-kind-icon">_dims<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L810">Num.ts:810</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L811">Num.ts:811</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -179,7 +179,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mag</h3>
 					<div class="tsd-signature tsd-kind-icon">_mag<span class="tsd-signature-symbol">:</span> <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L809">Num.ts:809</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L810">Num.ts:810</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -189,7 +189,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _max</h3>
 					<div class="tsd-signature tsd-kind-icon">_max<span class="tsd-signature-symbol">:</span> <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L807">Num.ts:807</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L808">Num.ts:808</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -199,7 +199,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _min</h3>
 					<div class="tsd-signature tsd-kind-icon">_min<span class="tsd-signature-symbol">:</span> <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L808">Num.ts:808</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L809">Num.ts:809</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -209,7 +209,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _source</h3>
 					<div class="tsd-signature tsd-kind-icon">_source<span class="tsd-signature-symbol">:</span> <a href="_pt_.group.html" class="tsd-signature-type">Group</a></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L806">Num.ts:806</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L807">Num.ts:807</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -226,7 +226,7 @@ <h3>magnitude</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L835">Num.ts:835</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L836">Num.ts:836</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -248,7 +248,7 @@ <h3>max</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L825">Num.ts:825</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L826">Num.ts:826</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -270,7 +270,7 @@ <h3>min</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L830">Num.ts:830</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L831">Num.ts:831</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -295,7 +295,7 @@ <h3>append</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L895">Num.ts:895</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L896">Num.ts:896</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -332,7 +332,7 @@ <h3>calc</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L842">Num.ts:842</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L843">Num.ts:843</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -355,7 +355,7 @@ <h3>map<wbr>To</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L876">Num.ts:876</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L877">Num.ts:877</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -398,7 +398,7 @@ <h3>ticks</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L907">Num.ts:907</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L908">Num.ts:908</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -454,6 +454,9 @@ <h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signa
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -475,6 +478,9 @@ <h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signa
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/classes/_num_.shaping.html b/docs/classes/_num_.shaping.html
index 2ddb2364..b257ca35 100644
--- a/docs/classes/_num_.shaping.html
+++ b/docs/classes/_num_.shaping.html
@@ -138,7 +138,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> bounce<wbr>In</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L650">Num.ts:650</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L651">Num.ts:651</a></li>
 								</ul>
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 							<div class="tsd-comment tsd-typography">
@@ -177,7 +177,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> bounce<wbr>InOut</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L679">Num.ts:679</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L680">Num.ts:680</a></li>
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 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -216,7 +216,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> bounce<wbr>Out</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L659">Num.ts:659</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L660">Num.ts:660</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -255,7 +255,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> circular<wbr>In</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L580">Num.ts:580</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L581">Num.ts:581</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -294,7 +294,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> circular<wbr>InOut</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L599">Num.ts:599</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L600">Num.ts:600</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -333,7 +333,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> circular<wbr>Out</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L589">Num.ts:589</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L590">Num.ts:590</a></li>
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 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -372,7 +372,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> cliff</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L779">Num.ts:779</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L780">Num.ts:780</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -417,7 +417,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> cosine<wbr>Approx</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L568">Num.ts:568</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L569">Num.ts:569</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -456,7 +456,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> cubic<wbr>Bezier</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L751">Num.ts:751</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L752">Num.ts:752</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -507,7 +507,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> cubic<wbr>In</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L492">Num.ts:492</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L493">Num.ts:493</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -546,7 +546,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> cubic<wbr>InOut</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L511">Num.ts:511</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L512">Num.ts:512</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -585,7 +585,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> cubic<wbr>Out</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L501">Num.ts:501</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L502">Num.ts:502</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -624,7 +624,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> elastic<wbr>In</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L610">Num.ts:610</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L611">Num.ts:611</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -669,7 +669,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> elastic<wbr>InOut</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L633">Num.ts:633</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L634">Num.ts:634</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -714,7 +714,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> elastic<wbr>Out</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L622">Num.ts:622</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L623">Num.ts:623</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -759,7 +759,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> exponential<wbr>In</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L522">Num.ts:522</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L523">Num.ts:523</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -804,7 +804,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> exponential<wbr>Out</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L532">Num.ts:532</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L533">Num.ts:533</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -849,7 +849,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> linear</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L455">Num.ts:455</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L456">Num.ts:456</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -888,7 +888,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> log<wbr>Sigmoid</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L700">Num.ts:700</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L701">Num.ts:701</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -933,7 +933,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> quadratic<wbr>Bezier</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L732">Num.ts:732</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L733">Num.ts:733</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -978,7 +978,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> quadratic<wbr>In</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L464">Num.ts:464</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L465">Num.ts:465</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -1017,7 +1017,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> quadratic<wbr>InOut</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L482">Num.ts:482</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L483">Num.ts:483</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1056,7 +1056,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> quadratic<wbr>Out</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L473">Num.ts:473</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L474">Num.ts:474</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1095,7 +1095,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> quadratic<wbr>Target</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L763">Num.ts:763</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L764">Num.ts:764</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1140,7 +1140,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> seat</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L717">Num.ts:717</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L718">Num.ts:718</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1185,7 +1185,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> sigmoid</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L689">Num.ts:689</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L690">Num.ts:690</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1230,7 +1230,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> sine<wbr>In</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L541">Num.ts:541</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L542">Num.ts:542</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1269,7 +1269,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> sine<wbr>InOut</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L559">Num.ts:559</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L560">Num.ts:560</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1308,7 +1308,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> sine<wbr>Out</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L550">Num.ts:550</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L551">Num.ts:551</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1347,7 +1347,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> step</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Num.ts#L791">Num.ts:791</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Num.ts#L792">Num.ts:792</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1429,6 +1429,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">any</span
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -1450,6 +1453,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">any</span
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/classes/_op_.circle.html b/docs/classes/_op_.circle.html
index f0b77e16..5f8567aa 100644
--- a/docs/classes/_op_.circle.html
+++ b/docs/classes/_op_.circle.html
@@ -120,7 +120,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> from<wbr>Center</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L530">Op.ts:530</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L625">Op.ts:625</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -157,7 +157,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> from<wbr>Rect</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L512">Op.ts:512</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L607">Op.ts:607</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -194,7 +194,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> intersect<wbr>Circle2D</h
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L604">Op.ts:604</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L699">Op.ts:699</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -232,7 +232,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> intersect<wbr>Line2D</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L586">Op.ts:586</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L681">Op.ts:681</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -267,7 +267,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> intersect<wbr>Ray2D</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L553">Op.ts:553</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L648">Op.ts:648</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -305,13 +305,13 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> intersect<wbr>Rect2D</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L638">Op.ts:638</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L733">Op.ts:733</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
 								<div class="lead">
 									<p>Quick way to check rectangle intersection with a circle.
-									For more optimized implementation, store the rectangle&#39;s sides separately (eg, <code>Rectangle.sides()</code>) and use <code>Polygon.intersect2D()</code>.</p>
+									For more optimized implementation, store the rectangle&#39;s sides separately (eg, <code>Rectangle.sides()</code>) and use <code>Polygon.intersectPolygon2D()</code>.</p>
 								</div>
 							</div>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -344,7 +344,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> to<wbr>Inner<wbr>Rect</h3
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L663">Op.ts:663</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L758">Op.ts:758</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -375,7 +375,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> to<wbr>Inner<wbr>Triangle
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L674">Op.ts:674</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L769">Op.ts:769</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -406,7 +406,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> to<wbr>Rect</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L653">Op.ts:653</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L748">Op.ts:748</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -437,7 +437,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> within<wbr>Bound</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L541">Op.ts:541</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L636">Op.ts:636</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -505,6 +505,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
 					<li class="current tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -526,6 +529,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
@@ -584,6 +590,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
 					<li class=" tsd-kind-class tsd-parent-kind-external-module">
 						<a href="_op_.triangle.html" class="tsd-kind-icon">Triangle</a>
 					</li>
+					<li class=" tsd-kind-type-alias tsd-parent-kind-external-module">
+						<a href="../modules/_op_.html#intersectcontext" class="tsd-kind-icon">Intersect<wbr>Context</a>
+					</li>
 					<li class=" tsd-kind-function tsd-parent-kind-external-module tsd-is-not-exported">
 						<a href="../modules/_op_.html#_errorlength" class="tsd-kind-icon">_error<wbr>Length</a>
 					</li>
diff --git a/docs/classes/_op_.curve.html b/docs/classes/_op_.curve.html
index a39a0dcc..7afd619b 100644
--- a/docs/classes/_op_.curve.html
+++ b/docs/classes/_op_.curve.html
@@ -122,7 +122,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> _calc<wbr>Pt</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L1141">Op.ts:1141</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L1439">Op.ts:1439</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -159,7 +159,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> bezier</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L1285">Op.ts:1285</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L1583">Op.ts:1583</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -197,7 +197,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> bezier<wbr>Step</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L1314">Op.ts:1314</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L1612">Op.ts:1612</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -235,7 +235,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> bspline</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L1340">Op.ts:1340</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L1638">Op.ts:1638</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -279,7 +279,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> bspline<wbr>Step</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L1373">Op.ts:1373</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L1671">Op.ts:1671</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -317,7 +317,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> bspline<wbr>Tension<wbr>S
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L1399">Op.ts:1399</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L1697">Op.ts:1697</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -361,7 +361,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> cardinal</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L1216">Op.ts:1216</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L1514">Op.ts:1514</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -405,7 +405,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> cardinal<wbr>Step</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L1249">Op.ts:1249</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L1547">Op.ts:1547</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -449,7 +449,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> catmull<wbr>Rom</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L1157">Op.ts:1157</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L1455">Op.ts:1455</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -487,7 +487,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> catmull<wbr>Rom<wbr>Step<
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L1190">Op.ts:1190</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L1488">Op.ts:1488</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -525,7 +525,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> control<wbr>Points</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L1122">Op.ts:1122</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L1420">Op.ts:1420</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -569,7 +569,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> get<wbr>Steps</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L1106">Op.ts:1106</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L1404">Op.ts:1404</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -625,6 +625,9 @@ <h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signa
 					<li class="current tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -646,6 +649,9 @@ <h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signa
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
@@ -710,6 +716,9 @@ <h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signa
 					<li class=" tsd-kind-class tsd-parent-kind-external-module">
 						<a href="_op_.triangle.html" class="tsd-kind-icon">Triangle</a>
 					</li>
+					<li class=" tsd-kind-type-alias tsd-parent-kind-external-module">
+						<a href="../modules/_op_.html#intersectcontext" class="tsd-kind-icon">Intersect<wbr>Context</a>
+					</li>
 					<li class=" tsd-kind-function tsd-parent-kind-external-module tsd-is-not-exported">
 						<a href="../modules/_op_.html#_errorlength" class="tsd-kind-icon">_error<wbr>Length</a>
 					</li>
diff --git a/docs/classes/_op_.line.html b/docs/classes/_op_.line.html
index 35408055..f7020bd7 100644
--- a/docs/classes/_op_.line.html
+++ b/docs/classes/_op_.line.html
@@ -94,6 +94,7 @@ <h2>Index</h2>
 							<h3>Methods</h3>
 							<ul class="tsd-index-list">
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.line.html#collinear" class="tsd-kind-icon">collinear</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.line.html#crop" class="tsd-kind-icon">crop</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.line.html#distancefrompt" class="tsd-kind-icon">distance<wbr>From<wbr>Pt</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.line.html#fromangle" class="tsd-kind-icon">from<wbr>Angle</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.line.html#intercept" class="tsd-kind-icon">intercept</a></li>
@@ -101,11 +102,13 @@ <h3>Methods</h3>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.line.html#intersectgridwithray2d" class="tsd-kind-icon">intersect<wbr>Grid<wbr>With<wbr>Ray2D</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.line.html#intersectline2d" class="tsd-kind-icon">intersect<wbr>Line2D</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.line.html#intersectlinewithray2d" class="tsd-kind-icon">intersect<wbr>Line<wbr>With<wbr>Ray2D</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.line.html#intersectlines2d" class="tsd-kind-icon">intersect<wbr>Lines2D</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.line.html#intersectpolygon2d" class="tsd-kind-icon">intersect<wbr>Polygon2D</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.line.html#intersectray2d" class="tsd-kind-icon">intersect<wbr>Ray2D</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.line.html#intersectrect2d" class="tsd-kind-icon">intersect<wbr>Rect2D</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.line.html#magnitude" class="tsd-kind-icon">magnitude</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.line.html#magnitudesq" class="tsd-kind-icon">magnitude<wbr>Sq</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.line.html#marker" class="tsd-kind-icon">marker</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.line.html#perpendicularfrompt" class="tsd-kind-icon">perpendicular<wbr>From<wbr>Pt</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.line.html#sideofpt2d" class="tsd-kind-icon">side<wbr>OfPt2D</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.line.html#slope" class="tsd-kind-icon">slope</a></li>
@@ -128,7 +131,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> collinear</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L81">Op.ts:81</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L91">Op.ts:91</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -167,6 +170,56 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
 						</li>
 					</ul>
 				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-static">
+					<a name="crop" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> crop</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">crop<span class="tsd-signature-symbol">(</span>line<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a>, size<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a>, index<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span>, cropAsCircle<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L315">Op.ts:315</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Crop this line by a circle or rectangle at end point.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>line: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>line to crop</p>
+									</div>
+								</li>
+								<li>
+									<h5>size: <a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>size of circle or rectangle as Pt</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> index: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>line&#39;s end point index, ie, 0 = start and 1 = end.</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> cropAsCircle: <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;true</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a boolean to specify whether the <code>size</code> parameter should be treated as circle. Default is <code>true</code>.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+							<p>an intersecting point on the line that can be used for cropping.</p>
+						</li>
+					</ul>
+				</section>
 				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-static">
 					<a name="distancefrompt" class="tsd-anchor"></a>
 					<h3><span class="tsd-flag ts-flagStatic">Static</span> distance<wbr>From<wbr>Pt</h3>
@@ -177,7 +230,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> distance<wbr>From<wbr>Pt<
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L130">Op.ts:130</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L140">Op.ts:140</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -219,7 +272,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> from<wbr>Angle</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L29">Op.ts:29</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L39">Op.ts:39</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -263,7 +316,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> intercept</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L52">Op.ts:52</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L62">Op.ts:62</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -312,7 +365,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> intersect<wbr>Grid<wbr>Wi
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L239">Op.ts:239</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L269">Op.ts:269</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -347,7 +400,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> intersect<wbr>Grid<wbr>Wi
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L224">Op.ts:224</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L254">Op.ts:254</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -385,7 +438,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> intersect<wbr>Line2D</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L183">Op.ts:183</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L193">Op.ts:193</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -423,7 +476,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> intersect<wbr>Line<wbr>Wi
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L195">Op.ts:195</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L205">Op.ts:205</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -451,17 +504,60 @@ <h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signatur
 						</li>
 					</ul>
 				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-static">
+					<a name="intersectlines2d" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> intersect<wbr>Lines2D</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">intersect<wbr>Lines2D<span class="tsd-signature-symbol">(</span>lines1<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a><span class="tsd-signature-symbol">[]</span>, lines2<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a><span class="tsd-signature-symbol">[]</span>, isRay<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.group.html" class="tsd-signature-type">Group</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L235">Op.ts:235</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Find intersection points of 2 polygons. This checks all line segments in the two lists. Consider using a bounding-box check before calling this.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>lines1: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>an array of line segments</p>
+									</div>
+								</li>
+								<li>
+									<h5>lines2: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>an array of line segments</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> isRay: <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;false</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a boolean value to treat the line as a ray (infinite line). Default is <code>false</code>.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signature-type">Group</a></h4>
+						</li>
+					</ul>
+				</section>
 				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-static">
 					<a name="intersectpolygon2d" class="tsd-anchor"></a>
 					<h3><span class="tsd-flag ts-flagStatic">Static</span> intersect<wbr>Polygon2D</h3>
 					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-static">
-						<li class="tsd-signature tsd-kind-icon">intersect<wbr>Polygon2D<span class="tsd-signature-symbol">(</span>lineOrRay<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a>, poly<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a><span class="tsd-signature-symbol">[]</span>, sourceIsRay<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.group.html" class="tsd-signature-type">Group</a></li>
+						<li class="tsd-signature tsd-kind-icon">intersect<wbr>Polygon2D<span class="tsd-signature-symbol">(</span>lineOrRay<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a>, poly<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a>, sourceIsRay<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.group.html" class="tsd-signature-type">Group</a></li>
 					</ul>
 					<ul class="tsd-descriptions">
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L207">Op.ts:207</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L217">Op.ts:217</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -478,7 +574,7 @@ <h5>lineOrRay: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-typ
 									</div>
 								</li>
 								<li>
-									<h5>poly: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a><span class="tsd-signature-symbol">[]</span></h5>
+									<h5>poly: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a></h5>
 									<div class="tsd-comment tsd-typography">
 										<p>a Group of Pts representing a polygon</p>
 									</div>
@@ -504,7 +600,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> intersect<wbr>Ray2D</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L141">Op.ts:141</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L151">Op.ts:151</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -542,13 +638,13 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> intersect<wbr>Rect2D</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L255">Op.ts:255</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L286">Op.ts:286</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
 								<div class="lead">
 									<p>Quick way to check rectangle intersection.
-									For more optimized implementation, store the rectangle&#39;s sides separately (eg, <code>Rectangle.sides()</code>) and use <code>Polygon.intersect2D()</code>.</p>
+									For more optimized implementation, store the rectangle&#39;s sides separately (eg, <code>Rectangle.sides()</code>) and use <code>Polygon.intersectPolygon2D()</code>.</p>
 								</div>
 							</div>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -567,6 +663,7 @@ <h5>rect: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">Gr
 								</li>
 							</ul>
 							<h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signature-type">Group</a></h4>
+							<p>a Group of intersecting Pts</p>
 						</li>
 					</ul>
 				</section>
@@ -580,7 +677,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> magnitude</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L93">Op.ts:93</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L103">Op.ts:103</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -611,7 +708,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> magnitude<wbr>Sq</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L102">Op.ts:102</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L112">Op.ts:112</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -632,6 +729,56 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 						</li>
 					</ul>
 				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-static">
+					<a name="marker" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> marker</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">marker<span class="tsd-signature-symbol">(</span>line<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a>, size<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a>, graphic<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">string</span>, atTail<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.group.html" class="tsd-signature-type">Group</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L347">Op.ts:347</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Create an marker arrow or line, placed at an end point of this line</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>line: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>line to place marker</p>
+									</div>
+								</li>
+								<li>
+									<h5>size: <a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>size of the marker as Pt</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> graphic: <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;(&quot;arrow&quot;||&quot;line&quot;)</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>either &quot;arrow&quot; or &quot;line&quot;</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> atTail: <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;true</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a boolean, if <code>true</code>, the marker will be positioned at tail of the line (ie, index = 1). Default is <code>true</code>.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signature-type">Group</a></h4>
+							<p>a Group that defines the marker&#39;s shape</p>
+						</li>
+					</ul>
+				</section>
 				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-static">
 					<a name="perpendicularfrompt" class="tsd-anchor"></a>
 					<h3><span class="tsd-flag ts-flagStatic">Static</span> perpendicular<wbr>From<wbr>Pt</h3>
@@ -642,7 +789,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> perpendicular<wbr>From<wb
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L114">Op.ts:114</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L124">Op.ts:124</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -683,7 +830,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> side<wbr>OfPt2D</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L69">Op.ts:69</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L79">Op.ts:79</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -721,7 +868,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> slope</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L41">Op.ts:41</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L51">Op.ts:51</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -758,7 +905,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> subpoints</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L265">Op.ts:265</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L298">Op.ts:298</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -795,7 +942,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> to<wbr>Rect</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L278">Op.ts:278</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L368">Op.ts:368</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -851,6 +998,9 @@ <h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signa
 					<li class="current tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -872,6 +1022,9 @@ <h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signa
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
@@ -890,6 +1043,9 @@ <h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signa
 							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-static">
 								<a href="_op_.line.html#collinear" class="tsd-kind-icon">collinear</a>
 							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-static">
+								<a href="_op_.line.html#crop" class="tsd-kind-icon">crop</a>
+							</li>
 							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-static">
 								<a href="_op_.line.html#distancefrompt" class="tsd-kind-icon">distance<wbr>From<wbr>Pt</a>
 							</li>
@@ -911,6 +1067,9 @@ <h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signa
 							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-static">
 								<a href="_op_.line.html#intersectlinewithray2d" class="tsd-kind-icon">intersect<wbr>Line<wbr>With<wbr>Ray2D</a>
 							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-static">
+								<a href="_op_.line.html#intersectlines2d" class="tsd-kind-icon">intersect<wbr>Lines2D</a>
+							</li>
 							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-static">
 								<a href="_op_.line.html#intersectpolygon2d" class="tsd-kind-icon">intersect<wbr>Polygon2D</a>
 							</li>
@@ -926,6 +1085,9 @@ <h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signa
 							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-static">
 								<a href="_op_.line.html#magnitudesq" class="tsd-kind-icon">magnitude<wbr>Sq</a>
 							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-static">
+								<a href="_op_.line.html#marker" class="tsd-kind-icon">marker</a>
+							</li>
 							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-static">
 								<a href="_op_.line.html#perpendicularfrompt" class="tsd-kind-icon">perpendicular<wbr>From<wbr>Pt</a>
 							</li>
@@ -954,6 +1116,9 @@ <h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signa
 					<li class=" tsd-kind-class tsd-parent-kind-external-module">
 						<a href="_op_.triangle.html" class="tsd-kind-icon">Triangle</a>
 					</li>
+					<li class=" tsd-kind-type-alias tsd-parent-kind-external-module">
+						<a href="../modules/_op_.html#intersectcontext" class="tsd-kind-icon">Intersect<wbr>Context</a>
+					</li>
 					<li class=" tsd-kind-function tsd-parent-kind-external-module tsd-is-not-exported">
 						<a href="../modules/_op_.html#_errorlength" class="tsd-kind-icon">_error<wbr>Length</a>
 					</li>
diff --git a/docs/classes/_op_.polygon.html b/docs/classes/_op_.polygon.html
index a345f139..927d773f 100644
--- a/docs/classes/_op_.polygon.html
+++ b/docs/classes/_op_.polygon.html
@@ -93,17 +93,25 @@ <h2>Index</h2>
 						<section class="tsd-index-section ">
 							<h3>Methods</h3>
 							<ul class="tsd-index-list">
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-protected tsd-is-static"><a href="_op_.polygon.html#_axisoverlap" class="tsd-kind-icon">_axis<wbr>Overlap</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.polygon.html#adjacentsides" class="tsd-kind-icon">adjacent<wbr>Sides</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.polygon.html#area" class="tsd-kind-icon">area</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.polygon.html#bisector" class="tsd-kind-icon">bisector</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.polygon.html#centroid" class="tsd-kind-icon">centroid</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.polygon.html#convexhull" class="tsd-kind-icon">convex<wbr>Hull</a></li>
-								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.polygon.html#intersect2d" class="tsd-kind-icon">intersect2D</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.polygon.html#fromcenter" class="tsd-kind-icon">from<wbr>Center</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.polygon.html#hasintersectcircle" class="tsd-kind-icon">has<wbr>Intersect<wbr>Circle</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.polygon.html#hasintersectpoint" class="tsd-kind-icon">has<wbr>Intersect<wbr>Point</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.polygon.html#hasintersectpolygon" class="tsd-kind-icon">has<wbr>Intersect<wbr>Polygon</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.polygon.html#intersectpolygon2d" class="tsd-kind-icon">intersect<wbr>Polygon2D</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.polygon.html#lineat" class="tsd-kind-icon">line<wbr>At</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.polygon.html#lines" class="tsd-kind-icon">lines</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.polygon.html#midpoints" class="tsd-kind-icon">midpoints</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.polygon.html#nearestpt" class="tsd-kind-icon">nearest<wbr>Pt</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.polygon.html#network" class="tsd-kind-icon">network</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.polygon.html#perimeter" class="tsd-kind-icon">perimeter</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.polygon.html#projectaxis" class="tsd-kind-icon">project<wbr>Axis</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.polygon.html#rectangle" class="tsd-kind-icon">rectangle</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_op_.polygon.html#torects" class="tsd-kind-icon">to<wbr>Rects</a></li>
 							</ul>
 						</section>
@@ -112,6 +120,49 @@ <h3>Methods</h3>
 			</section>
 			<section class="tsd-panel-group tsd-member-group ">
 				<h2>Methods</h2>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-protected tsd-is-static">
+					<a name="_axisoverlap" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> <span class="tsd-flag ts-flagProtected">Protected</span> _axis<wbr>Overlap</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-protected tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">_axis<wbr>Overlap<span class="tsd-signature-symbol">(</span>poly1<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span>, poly2<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span>, unitAxis<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L1213">Op.ts:1213</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Check overlap dist from projected axis</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>poly1: <span class="tsd-signature-type">any</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>first polygon</p>
+									</div>
+								</li>
+								<li>
+									<h5>poly2: <span class="tsd-signature-type">any</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>second polygon</p>
+									</div>
+								</li>
+								<li>
+									<h5>unitAxis: <span class="tsd-signature-type">any</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>unit axis</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+					</ul>
+				</section>
 				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-static">
 					<a name="adjacentsides" class="tsd-anchor"></a>
 					<h3><span class="tsd-flag ts-flagStatic">Static</span> adjacent<wbr>Sides</h3>
@@ -122,7 +173,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> adjacent<wbr>Sides</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L881">Op.ts:881</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L1008">Op.ts:1008</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -165,7 +216,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> area</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L948">Op.ts:948</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L1075">Op.ts:1075</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -196,7 +247,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> bisector</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L905">Op.ts:905</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L1032">Op.ts:1032</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -234,7 +285,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> centroid</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L845">Op.ts:845</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L940">Op.ts:940</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -265,7 +316,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> convex<wbr>Hull</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L971">Op.ts:971</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L1098">Op.ts:1098</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -295,45 +346,218 @@ <h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signa
 					</ul>
 				</section>
 				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-static">
-					<a name="intersect2d" class="tsd-anchor"></a>
-					<h3><span class="tsd-flag ts-flagStatic">Static</span> intersect2D</h3>
+					<a name="fromcenter" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> from<wbr>Center</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">from<wbr>Center<span class="tsd-signature-symbol">(</span>center<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a>, radius<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, sides<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.group.html" class="tsd-signature-type">Group</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L956">Op.ts:956</a></li>
+								</ul>
+							</aside>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>center: <a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a></h5>
+								</li>
+								<li>
+									<h5>radius: <span class="tsd-signature-type">number</span></h5>
+								</li>
+								<li>
+									<h5>sides: <span class="tsd-signature-type">number</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signature-type">Group</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-static">
+					<a name="hasintersectcircle" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> has<wbr>Intersect<wbr>Circle</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">has<wbr>Intersect<wbr>Circle<span class="tsd-signature-symbol">(</span>poly<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a>, circle<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="../modules/_op_.html#intersectcontext" class="tsd-signature-type">IntersectContext</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L1246">Op.ts:1246</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Check if a convex polygon and a circle has intersections using Separating Axis Theorem.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>poly: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a Group representing a convex polygon</p>
+									</div>
+								</li>
+								<li>
+									<h5>circle: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a Group representing a circle</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="../modules/_op_.html#intersectcontext" class="tsd-signature-type">IntersectContext</a></h4>
+							<p>an <code>IntersectContext</code> object that stores the intersection info, or undefined if there&#39;s no intersection</p>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-static">
+					<a name="hasintersectpoint" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> has<wbr>Intersect<wbr>Point</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">has<wbr>Intersect<wbr>Point<span class="tsd-signature-symbol">(</span>poly<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a>, pt<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L1225">Op.ts:1225</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Check if a Pt is inside a convex polygon</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>poly: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a Group of Pt defining a convex polygon</p>
+									</div>
+								</li>
+								<li>
+									<h5>pt: <a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>the Pt to check</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-static">
+					<a name="hasintersectpolygon" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> has<wbr>Intersect<wbr>Polygon</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">has<wbr>Intersect<wbr>Polygon<span class="tsd-signature-symbol">(</span>poly1<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a>, poly2<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="../modules/_op_.html#intersectcontext" class="tsd-signature-type">IntersectContext</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L1303">Op.ts:1303</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Check if two convex polygons has intersections using Separating Axis Theorem.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>poly1: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a Group representing a convex polygon</p>
+									</div>
+								</li>
+								<li>
+									<h5>poly2: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a Group representing a convex polygon</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="../modules/_op_.html#intersectcontext" class="tsd-signature-type">IntersectContext</a></h4>
+							<p>an <code>IntersectContext</code> object that stores the intersection info, or undefined if there&#39;s no intersection</p>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-static">
+					<a name="intersectpolygon2d" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> intersect<wbr>Polygon2D</h3>
 					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-static">
-						<li class="tsd-signature tsd-kind-icon">intersect2D<span class="tsd-signature-symbol">(</span>poly<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a><span class="tsd-signature-symbol">[]</span>, linesOrRays<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a><span class="tsd-signature-symbol">[]</span>, sourceIsRay<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.group.html" class="tsd-signature-type">Group</a><span class="tsd-signature-symbol">[]</span></li>
+						<li class="tsd-signature tsd-kind-icon">intersect<wbr>Polygon2D<span class="tsd-signature-symbol">(</span>poly1<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a>, poly2<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.group.html" class="tsd-signature-type">Group</a></li>
 					</ul>
 					<ul class="tsd-descriptions">
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L1036">Op.ts:1036</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L1367">Op.ts:1367</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
 								<div class="lead">
-									<p>Find intersection points of 2 polygons</p>
+									<p>Find intersection points of 2 polygons by checking every side of both polygons</p>
 								</div>
 							</div>
 							<h4 class="tsd-parameters-title">Parameters</h4>
 							<ul class="tsd-parameters">
 								<li>
-									<h5>poly: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a><span class="tsd-signature-symbol">[]</span></h5>
+									<h5>poly1: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a></h5>
 									<div class="tsd-comment tsd-typography">
 										<p>a Group representing a polygon</p>
 									</div>
 								</li>
 								<li>
-									<h5>linesOrRays: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a><span class="tsd-signature-symbol">[]</span></h5>
+									<h5>poly2: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a></h5>
 									<div class="tsd-comment tsd-typography">
-										<p>an array of Groups representing lines</p>
+										<p>another Group representing a polygon</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signature-type">Group</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-static">
+					<a name="lineat" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> line<wbr>At</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">line<wbr>At<span class="tsd-signature-symbol">(</span>pts<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a>, idx<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.group.html" class="tsd-signature-type">Group</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L971">Op.ts:971</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Given a Group of Pts that defines a polygon, get one edge using an index</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>pts: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a Group</p>
 									</div>
 								</li>
 								<li>
-									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> sourceIsRay: <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;false</span></h5>
+									<h5>idx: <span class="tsd-signature-type">number</span></h5>
 									<div class="tsd-comment tsd-typography">
-										<p>a boolean value to treat the line as a ray (infinite line). Default is <code>false</code>.</p>
+										<p>index of a Pt in the Group</p>
 									</div>
 								</li>
 							</ul>
-							<h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signature-type">Group</a><span class="tsd-signature-symbol">[]</span></h4>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signature-type">Group</a></h4>
 						</li>
 					</ul>
 				</section>
@@ -347,7 +571,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> lines</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L855">Op.ts:855</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L982">Op.ts:982</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -364,7 +588,7 @@ <h5>pts: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">Gro
 									</div>
 								</li>
 								<li>
-									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> closePath: <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;false</span></h5>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> closePath: <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;true</span></h5>
 									<div class="tsd-comment tsd-typography">
 										<p>a boolean to specify whether the polygon should be closed (ie, whether the final segment should be counted).</p>
 									</div>
@@ -385,7 +609,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> midpoints</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L868">Op.ts:868</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L995">Op.ts:995</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -428,7 +652,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> nearest<wbr>Pt</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L1066">Op.ts:1066</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L1177">Op.ts:1177</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -466,7 +690,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> network</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L1051">Op.ts:1051</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L1162">Op.ts:1162</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -503,7 +727,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> perimeter</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L925">Op.ts:925</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L1052">Op.ts:1052</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -539,17 +763,93 @@ <h5>total<span class="tsd-signature-symbol">: </span><span class="tsd-signature-
 						</li>
 					</ul>
 				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-static">
+					<a name="projectaxis" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> project<wbr>Axis</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">project<wbr>Axis<span class="tsd-signature-symbol">(</span>poly<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a>, unitAxis<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L1196">Op.ts:1196</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Project axis (eg, for use in Separation Axis Theorem)</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>poly: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a></h5>
+								</li>
+								<li>
+									<h5>unitAxis: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+									<div class="tsd-comment tsd-typography">
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-static">
+					<a name="rectangle" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> rectangle</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">rectangle<span class="tsd-signature-symbol">(</span>center<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a>, widthOrSize<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> | </span><a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a>, height<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.group.html" class="tsd-signature-type">Group</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L952">Op.ts:952</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Create a rectangular polygon</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>center: <a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>center point of the rectangle</p>
+									</div>
+								</li>
+								<li>
+									<h5>widthOrSize: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> | </span><a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>width as number, or a Pt representing the size of the rectangle</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> height: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>optional height</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signature-type">Group</a></h4>
+						</li>
+					</ul>
+				</section>
 				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-static">
 					<a name="torects" class="tsd-anchor"></a>
 					<h3><span class="tsd-flag ts-flagStatic">Static</span> to<wbr>Rects</h3>
 					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-static">
-						<li class="tsd-signature tsd-kind-icon">to<wbr>Rects<span class="tsd-signature-symbol">(</span>poly<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a><span class="tsd-signature-symbol">[]</span></li>
+						<li class="tsd-signature tsd-kind-icon">to<wbr>Rects<span class="tsd-signature-symbol">(</span>polys<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a><span class="tsd-signature-symbol">[]</span></li>
 					</ul>
 					<ul class="tsd-descriptions">
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L1084">Op.ts:1084</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L1382">Op.ts:1382</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -560,7 +860,10 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> to<wbr>Rects</h3>
 							<h4 class="tsd-parameters-title">Parameters</h4>
 							<ul class="tsd-parameters">
 								<li>
-									<h5>poly: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a><span class="tsd-signature-symbol">[]</span></h5>
+									<h5>polys: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>an array of Groups, or an array of Pt arrays</p>
+									</div>
 								</li>
 							</ul>
 							<h4 class="tsd-returns-title">Returns <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a><span class="tsd-signature-symbol">[]</span></h4>
@@ -602,6 +905,9 @@ <h4 class="tsd-returns-title">Returns <a href="../modules/_pt_.html#grouplike" c
 					<li class="current tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -623,6 +929,9 @@ <h4 class="tsd-returns-title">Returns <a href="../modules/_pt_.html#grouplike" c
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
@@ -641,6 +950,9 @@ <h4 class="tsd-returns-title">Returns <a href="../modules/_pt_.html#grouplike" c
 					<li class="current tsd-kind-class tsd-parent-kind-external-module">
 						<a href="_op_.polygon.html" class="tsd-kind-icon">Polygon</a>
 						<ul>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-protected tsd-is-static">
+								<a href="_op_.polygon.html#_axisoverlap" class="tsd-kind-icon">_axis<wbr>Overlap</a>
+							</li>
 							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-static">
 								<a href="_op_.polygon.html#adjacentsides" class="tsd-kind-icon">adjacent<wbr>Sides</a>
 							</li>
@@ -657,7 +969,22 @@ <h4 class="tsd-returns-title">Returns <a href="../modules/_pt_.html#grouplike" c
 								<a href="_op_.polygon.html#convexhull" class="tsd-kind-icon">convex<wbr>Hull</a>
 							</li>
 							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-static">
-								<a href="_op_.polygon.html#intersect2d" class="tsd-kind-icon">intersect2D</a>
+								<a href="_op_.polygon.html#fromcenter" class="tsd-kind-icon">from<wbr>Center</a>
+							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-static">
+								<a href="_op_.polygon.html#hasintersectcircle" class="tsd-kind-icon">has<wbr>Intersect<wbr>Circle</a>
+							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-static">
+								<a href="_op_.polygon.html#hasintersectpoint" class="tsd-kind-icon">has<wbr>Intersect<wbr>Point</a>
+							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-static">
+								<a href="_op_.polygon.html#hasintersectpolygon" class="tsd-kind-icon">has<wbr>Intersect<wbr>Polygon</a>
+							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-static">
+								<a href="_op_.polygon.html#intersectpolygon2d" class="tsd-kind-icon">intersect<wbr>Polygon2D</a>
+							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-static">
+								<a href="_op_.polygon.html#lineat" class="tsd-kind-icon">line<wbr>At</a>
 							</li>
 							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-static">
 								<a href="_op_.polygon.html#lines" class="tsd-kind-icon">lines</a>
@@ -674,6 +1001,12 @@ <h4 class="tsd-returns-title">Returns <a href="../modules/_pt_.html#grouplike" c
 							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-static">
 								<a href="_op_.polygon.html#perimeter" class="tsd-kind-icon">perimeter</a>
 							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-static">
+								<a href="_op_.polygon.html#projectaxis" class="tsd-kind-icon">project<wbr>Axis</a>
+							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-static">
+								<a href="_op_.polygon.html#rectangle" class="tsd-kind-icon">rectangle</a>
+							</li>
 							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-static">
 								<a href="_op_.polygon.html#torects" class="tsd-kind-icon">to<wbr>Rects</a>
 							</li>
@@ -687,6 +1020,9 @@ <h4 class="tsd-returns-title">Returns <a href="../modules/_pt_.html#grouplike" c
 					<li class=" tsd-kind-class tsd-parent-kind-external-module">
 						<a href="_op_.triangle.html" class="tsd-kind-icon">Triangle</a>
 					</li>
+					<li class=" tsd-kind-type-alias tsd-parent-kind-external-module">
+						<a href="../modules/_op_.html#intersectcontext" class="tsd-kind-icon">Intersect<wbr>Context</a>
+					</li>
 					<li class=" tsd-kind-function tsd-parent-kind-external-module tsd-is-not-exported">
 						<a href="../modules/_op_.html#_errorlength" class="tsd-kind-icon">_error<wbr>Length</a>
 					</li>
diff --git a/docs/classes/_op_.rectangle.html b/docs/classes/_op_.rectangle.html
index ee4a548c..9f76eee3 100644
--- a/docs/classes/_op_.rectangle.html
+++ b/docs/classes/_op_.rectangle.html
@@ -127,7 +127,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> bounding<wbr>Box</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L405">Op.ts:405</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L495">Op.ts:495</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -159,7 +159,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> center</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L360">Op.ts:360</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L450">Op.ts:450</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -190,7 +190,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> corners</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L371">Op.ts:371</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L461">Op.ts:461</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -221,7 +221,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> from</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L296">Op.ts:296</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L386">Op.ts:386</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -255,7 +255,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> from<wbr>Center</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L319">Op.ts:319</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L409">Op.ts:409</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -295,7 +295,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> from<wbr>Top<wbr>Left</h3
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L307">Op.ts:307</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L397">Op.ts:397</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -338,7 +338,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> halves</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L449">Op.ts:449</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L539">Op.ts:539</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -376,13 +376,13 @@ <h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signa
 					<a name="hasintersectrect2d" class="tsd-anchor"></a>
 					<h3><span class="tsd-flag ts-flagStatic">Static</span> has<wbr>Intersect<wbr>Rect2D</h3>
 					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-static">
-						<li class="tsd-signature tsd-kind-icon">has<wbr>Intersect<wbr>Rect2D<span class="tsd-signature-symbol">(</span>rect1<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a>, rect2<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+						<li class="tsd-signature tsd-kind-icon">has<wbr>Intersect<wbr>Rect2D<span class="tsd-signature-symbol">(</span>rect1<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a>, rect2<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a>, resetBoundingBox<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
 					</ul>
 					<ul class="tsd-descriptions">
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L474">Op.ts:474</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L565">Op.ts:565</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -404,6 +404,12 @@ <h5>rect2: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">G
 										<p>a Group of 2 Pts representing a rectangle</p>
 									</div>
 								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> resetBoundingBox: <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;false</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>if <code>true</code>, reset the bounding box. Default is <code>false</code> which assumes the rect&#39;s first Pt at is its top-left corner.</p>
+									</div>
+								</li>
 							</ul>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
 						</li>
@@ -419,13 +425,13 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> intersect<wbr>Rect2D</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L489">Op.ts:489</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L585">Op.ts:585</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
 								<div class="lead">
 									<p>Quick way to check rectangle intersection.
-									For more optimized implementation, store the rectangle&#39;s sides separately (eg, <code>Rectangle.sides()</code>) and use <code>Polygon.intersect2D()</code>.</p>
+									For more optimized implementation, store the rectangle&#39;s sides separately (eg, <code>Rectangle.sides()</code>) and use <code>Polygon.intersectPolygon2D()</code>.</p>
 								</div>
 							</div>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -457,7 +463,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> lines</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L395">Op.ts:395</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L485">Op.ts:485</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -485,7 +491,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> polygon</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L425">Op.ts:425</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L515">Op.ts:515</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -516,7 +522,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> quadrants</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L435">Op.ts:435</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L525">Op.ts:525</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -551,7 +557,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> sides</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L383">Op.ts:383</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L473">Op.ts:473</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -583,7 +589,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> size</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L351">Op.ts:351</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L441">Op.ts:441</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -614,7 +620,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> to<wbr>Circle</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L330">Op.ts:330</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L420">Op.ts:420</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -648,7 +654,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> to<wbr>Square</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L340">Op.ts:340</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L430">Op.ts:430</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -685,7 +691,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> within<wbr>Bound</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L464">Op.ts:464</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L554">Op.ts:554</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -747,6 +753,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
 					<li class="current tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -768,6 +777,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
@@ -847,6 +859,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
 					<li class=" tsd-kind-class tsd-parent-kind-external-module">
 						<a href="_op_.triangle.html" class="tsd-kind-icon">Triangle</a>
 					</li>
+					<li class=" tsd-kind-type-alias tsd-parent-kind-external-module">
+						<a href="../modules/_op_.html#intersectcontext" class="tsd-kind-icon">Intersect<wbr>Context</a>
+					</li>
 					<li class=" tsd-kind-function tsd-parent-kind-external-module tsd-is-not-exported">
 						<a href="../modules/_op_.html#_errorlength" class="tsd-kind-icon">_error<wbr>Length</a>
 					</li>
diff --git a/docs/classes/_op_.triangle.html b/docs/classes/_op_.triangle.html
index a06727dd..fa197d8c 100644
--- a/docs/classes/_op_.triangle.html
+++ b/docs/classes/_op_.triangle.html
@@ -121,7 +121,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> altitude</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L762">Op.ts:762</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L857">Op.ts:857</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -159,7 +159,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> circumcenter</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L813">Op.ts:813</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L908">Op.ts:908</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -191,7 +191,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> circumcircle</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L825">Op.ts:825</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L920">Op.ts:920</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -228,7 +228,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> from<wbr>Center</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L723">Op.ts:723</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L818">Op.ts:818</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -265,7 +265,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> from<wbr>Circle</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L713">Op.ts:713</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L808">Op.ts:808</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -296,7 +296,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> from<wbr>Rect</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L700">Op.ts:700</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L795">Op.ts:795</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -327,7 +327,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> incenter</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L788">Op.ts:788</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L883">Op.ts:883</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -359,7 +359,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> incircle</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L800">Op.ts:800</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L895">Op.ts:895</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -396,7 +396,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> medial</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L733">Op.ts:733</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L828">Op.ts:828</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -428,7 +428,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> opposite<wbr>Side</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L745">Op.ts:745</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L840">Op.ts:840</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -466,7 +466,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> orthocenter</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L776">Op.ts:776</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L871">Op.ts:871</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -523,6 +523,9 @@ <h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signatur
 					<li class="current tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -544,6 +547,9 @@ <h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signatur
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
@@ -605,6 +611,9 @@ <h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signatur
 					</li>
 				</ul>
 				<ul class="after-current">
+					<li class=" tsd-kind-type-alias tsd-parent-kind-external-module">
+						<a href="../modules/_op_.html#intersectcontext" class="tsd-kind-icon">Intersect<wbr>Context</a>
+					</li>
 					<li class=" tsd-kind-function tsd-parent-kind-external-module tsd-is-not-exported">
 						<a href="../modules/_op_.html#_errorlength" class="tsd-kind-icon">_error<wbr>Length</a>
 					</li>
diff --git a/docs/classes/_physics_.body.html b/docs/classes/_physics_.body.html
new file mode 100644
index 00000000..762320bb
--- /dev/null
+++ b/docs/classes/_physics_.body.html
@@ -0,0 +1,4644 @@
+<!doctype html>
+<html class="default no-js">
+<head>
+	<meta charset="utf-8">
+	<meta http-equiv="X-UA-Compatible" content="IE=edge">
+	<title>Body | Pts</title>
+	<meta name="description" content="">
+	<meta name="viewport" content="width=device-width, initial-scale=1">
+	<link rel="stylesheet" href="../assets/css/main.css">
+</head>
+<body>
+<header>
+	<div class="tsd-page-toolbar">
+		<div class="container">
+			<div class="table-wrap">
+				<div class="table-cell" id="tsd-search" data-index="../assets/js/search.js" data-base="..">
+					<div class="field">
+						<label for="tsd-search-field" class="tsd-widget search no-caption">Search</label>
+						<input id="tsd-search-field" type="text" />
+					</div>
+					<ul class="results">
+						<li class="state loading">Preparing search index...</li>
+						<li class="state failure">The search index is not available</li>
+					</ul>
+					<a href="../index.html" class="title">Pts</a>
+				</div>
+				<div class="table-cell" id="tsd-widgets">
+					<div id="tsd-filter">
+						<a href="#" class="tsd-widget options no-caption" data-toggle="options">Options</a>
+						<div class="tsd-filter-group">
+							<div class="tsd-select" id="tsd-filter-visibility">
+								<span class="tsd-select-label">All</span>
+								<ul class="tsd-select-list">
+									<li data-value="public">Public</li>
+									<li data-value="protected">Public/Protected</li>
+									<li data-value="private" class="selected">All</li>
+								</ul>
+							</div>
+							<input type="checkbox" id="tsd-filter-inherited" checked />
+							<label class="tsd-widget" for="tsd-filter-inherited">Inherited</label>
+							<input type="checkbox" id="tsd-filter-externals" checked />
+							<label class="tsd-widget" for="tsd-filter-externals">Externals</label>
+							<input type="checkbox" id="tsd-filter-only-exported" />
+							<label class="tsd-widget" for="tsd-filter-only-exported">Only exported</label>
+						</div>
+					</div>
+					<a href="#" class="tsd-widget menu no-caption" data-toggle="menu">Menu</a>
+				</div>
+			</div>
+		</div>
+	</div>
+	<div class="tsd-page-title">
+		<div class="container">
+			<ul class="tsd-breadcrumb">
+				<li>
+					<a href="../index.html">Globals</a>
+				</li>
+				<li>
+					<a href="../modules/_physics_.html">&quot;Physics&quot;</a>
+				</li>
+				<li>
+					<a href="_physics_.body.html">Body</a>
+				</li>
+			</ul>
+			<h1>Class Body</h1>
+		</div>
+	</div>
+</header>
+<div class="container container-main">
+	<div class="row">
+		<div class="col-8 col-content">
+			<section class="tsd-panel tsd-comment">
+				<div class="tsd-comment tsd-typography">
+					<div class="lead">
+						<p>Body consists of a group of <code>Particles</code> and edge constraints. It is usually added into a <code>World</code> to create physics simulations</p>
+					</div>
+				</div>
+			</section>
+			<section class="tsd-panel tsd-hierarchy">
+				<h3>Hierarchy</h3>
+				<ul class="tsd-hierarchy">
+					<li>
+						<a href="_pt_.group.html" class="tsd-signature-type">Group</a>
+						<ul class="tsd-hierarchy">
+							<li>
+								<span class="target">Body</span>
+							</li>
+						</ul>
+					</li>
+				</ul>
+			</section>
+			<section class="tsd-panel tsd-kind-class tsd-parent-kind-external-module">
+				<h3 class="tsd-before-signature">Indexable</h3>
+				<div class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">[</span>n: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">]: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></div>
+				<div class="tsd-comment tsd-typography">
+					<div class="lead">
+						<p>Body consists of a group of <code>Particles</code> and edge constraints. It is usually added into a <code>World</code> to create physics simulations</p>
+					</div>
+				</div>
+			</section>
+			<section class="tsd-panel-group tsd-index-group">
+				<h2>Index</h2>
+				<section class="tsd-panel tsd-index-panel">
+					<div class="tsd-index-content">
+						<section class="tsd-index-section ">
+							<h3>Constructors</h3>
+							<ul class="tsd-index-list">
+								<li class="tsd-kind-constructor tsd-parent-kind-class tsd-is-overwrite"><a href="_physics_.body.html#constructor" class="tsd-kind-icon">constructor</a></li>
+							</ul>
+						</section>
+						<section class="tsd-index-section ">
+							<h3>Properties</h3>
+							<ul class="tsd-index-list">
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-protected"><a href="_physics_.body.html#_cs" class="tsd-kind-icon">_cs</a></li>
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-inherited tsd-is-protected"><a href="_physics_.body.html#_id" class="tsd-kind-icon">_id</a></li>
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-protected"><a href="_physics_.body.html#_locks" class="tsd-kind-icon">_locks</a></li>
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-protected"><a href="_physics_.body.html#_mass" class="tsd-kind-icon">_mass</a></li>
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-protected"><a href="_physics_.body.html#_stiff" class="tsd-kind-icon">_stiff</a></li>
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.body.html#length" class="tsd-kind-icon">length</a></li>
+							</ul>
+						</section>
+						<section class="tsd-index-section ">
+							<h3>Accessors</h3>
+							<ul class="tsd-index-list">
+								<li class="tsd-kind-accessor tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#id" class="tsd-kind-icon">id</a></li>
+								<li class="tsd-kind-accessor tsd-parent-kind-class"><a href="_physics_.body.html#mass" class="tsd-kind-icon">mass</a></li>
+								<li class="tsd-kind-get-signature tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#p1" class="tsd-kind-icon">p1</a></li>
+								<li class="tsd-kind-get-signature tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#p2" class="tsd-kind-icon">p2</a></li>
+								<li class="tsd-kind-get-signature tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#p3" class="tsd-kind-icon">p3</a></li>
+								<li class="tsd-kind-get-signature tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#p4" class="tsd-kind-icon">p4</a></li>
+								<li class="tsd-kind-get-signature tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#q1" class="tsd-kind-icon">q1</a></li>
+								<li class="tsd-kind-get-signature tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#q2" class="tsd-kind-icon">q2</a></li>
+								<li class="tsd-kind-get-signature tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#q3" class="tsd-kind-icon">q3</a></li>
+								<li class="tsd-kind-get-signature tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#q4" class="tsd-kind-icon">q4</a></li>
+							</ul>
+						</section>
+						<section class="tsd-index-section ">
+							<h3>Methods</h3>
+							<ul class="tsd-index-list">
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#_matrixadd" class="tsd-kind-icon">$matrix<wbr>Add</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#_matrixmultiply" class="tsd-kind-icon">$matrix<wbr>Multiply</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#_zip" class="tsd-kind-icon">$zip</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#add" class="tsd-kind-icon">add</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#anchorfrom" class="tsd-kind-icon">anchor<wbr>From</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#anchorto" class="tsd-kind-icon">anchor<wbr>To</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_physics_.body.html#automass" class="tsd-kind-icon">auto<wbr>Mass</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#boundingbox" class="tsd-kind-icon">bounding<wbr>Box</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#centroid" class="tsd-kind-icon">centroid</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#clone" class="tsd-kind-icon">clone</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#divide" class="tsd-kind-icon">divide</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#foreachpt" class="tsd-kind-icon">for<wbr>Each<wbr>Pt</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_physics_.body.html#init" class="tsd-kind-icon">init</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#insert" class="tsd-kind-icon">insert</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#interpolate" class="tsd-kind-icon">interpolate</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#lines" class="tsd-kind-icon">lines</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_physics_.body.html#link" class="tsd-kind-icon">link</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_physics_.body.html#linkall" class="tsd-kind-icon">link<wbr>All</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_physics_.body.html#linkstolines" class="tsd-kind-icon">links<wbr>ToLines</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#moveby" class="tsd-kind-icon">move<wbr>By</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#moveto" class="tsd-kind-icon">move<wbr>To</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#multiply" class="tsd-kind-icon">multiply</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#op" class="tsd-kind-icon">op</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#ops" class="tsd-kind-icon">ops</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_physics_.body.html#processbody" class="tsd-kind-icon">process<wbr>Body</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_physics_.body.html#processedges" class="tsd-kind-icon">process<wbr>Edges</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_physics_.body.html#processparticle" class="tsd-kind-icon">process<wbr>Particle</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#reflect2d" class="tsd-kind-icon">reflect2D</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#remove" class="tsd-kind-icon">remove</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#rotate2d" class="tsd-kind-icon">rotate2D</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#scale" class="tsd-kind-icon">scale</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#segments" class="tsd-kind-icon">segments</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#shear2d" class="tsd-kind-icon">shear2D</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#sortbydimension" class="tsd-kind-icon">sort<wbr>ByDimension</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#split" class="tsd-kind-icon">split</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#subtract" class="tsd-kind-icon">subtract</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#tostring" class="tsd-kind-icon">to<wbr>String</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.body.html#zipslice" class="tsd-kind-icon">zip<wbr>Slice</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.body.html#concat" class="tsd-kind-icon">concat</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static"><a href="_physics_.body.html#every" class="tsd-kind-icon">every</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static"><a href="_physics_.body.html#filter" class="tsd-kind-icon">filter</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static"><a href="_physics_.body.html#foreach" class="tsd-kind-icon">for<wbr>Each</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.body.html#fromarray" class="tsd-kind-icon">from<wbr>Array</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_physics_.body.html#fromgroup" class="tsd-kind-icon">from<wbr>Group</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.body.html#fromptarray" class="tsd-kind-icon">from<wbr>PtArray</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.body.html#indexof" class="tsd-kind-icon">index<wbr>Of</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.body.html#join" class="tsd-kind-icon">join</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.body.html#lastindexof" class="tsd-kind-icon">last<wbr>Index<wbr>Of</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static"><a href="_physics_.body.html#map" class="tsd-kind-icon">map</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.body.html#pop" class="tsd-kind-icon">pop</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.body.html#push" class="tsd-kind-icon">push</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static"><a href="_physics_.body.html#reduce" class="tsd-kind-icon">reduce</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static"><a href="_physics_.body.html#reduceright" class="tsd-kind-icon">reduce<wbr>Right</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.body.html#reverse" class="tsd-kind-icon">reverse</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.body.html#shift" class="tsd-kind-icon">shift</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.body.html#slice" class="tsd-kind-icon">slice</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static"><a href="_physics_.body.html#some" class="tsd-kind-icon">some</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.body.html#sort" class="tsd-kind-icon">sort</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.body.html#splice" class="tsd-kind-icon">splice</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.body.html#tolocalestring" class="tsd-kind-icon">to<wbr>Locale<wbr>String</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.body.html#tostring-1" class="tsd-kind-icon">to<wbr>String</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.body.html#unshift" class="tsd-kind-icon">unshift</a></li>
+							</ul>
+						</section>
+					</div>
+				</section>
+			</section>
+			<section class="tsd-panel-group tsd-member-group ">
+				<h2>Constructors</h2>
+				<section class="tsd-panel tsd-member tsd-kind-constructor tsd-parent-kind-class tsd-is-overwrite">
+					<a name="constructor" class="tsd-anchor"></a>
+					<h3>constructor</h3>
+					<ul class="tsd-signatures tsd-kind-constructor tsd-parent-kind-class tsd-is-overwrite">
+						<li class="tsd-signature tsd-kind-icon">new <wbr>Body<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_physics_.body.html" class="tsd-signature-type">Body</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Overrides <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#constructor">constructor</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L463">Physics.ts:463</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Create an empty Body, this is usually followed by <code>init</code> to populate the Body. Alternatively, use static function <code>fromGroup</code> to create and initate a body directly.</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_physics_.body.html" class="tsd-signature-type">Body</a></h4>
+						</li>
+					</ul>
+				</section>
+			</section>
+			<section class="tsd-panel-group tsd-member-group ">
+				<h2>Properties</h2>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+					<a name="_cs" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagProtected">Protected</span> _cs</h3>
+					<div class="tsd-signature tsd-kind-icon">_cs<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">Array</span><span class="tsd-signature-symbol">&lt;</span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">&gt;</span><span class="tsd-signature-symbol"> =&nbsp;[]</span></div>
+					<aside class="tsd-sources">
+						<ul>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L460">Physics.ts:460</a></li>
+						</ul>
+					</aside>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-inherited tsd-is-protected">
+					<a name="_id" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagProtected">Protected</span> _id</h3>
+					<div class="tsd-signature tsd-kind-icon">_id<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span></div>
+					<aside class="tsd-sources">
+						<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#_id">_id</a></p>
+						<ul>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L516">Pt.ts:516</a></li>
+						</ul>
+					</aside>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+					<a name="_locks" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagProtected">Protected</span> _locks</h3>
+					<div class="tsd-signature tsd-kind-icon">_locks<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">object</span></div>
+					<aside class="tsd-sources">
+						<ul>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L462">Physics.ts:462</a></li>
+						</ul>
+					</aside>
+					<div class="tsd-type-declaration">
+						<h4>Type declaration</h4>
+						<ul class="tsd-parameters">
+							<li class="tsd-parameter-index-signature">
+								<h5><span class="tsd-signature-symbol">[</span>index: <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">]: </span><a href="_physics_.particle.html" class="tsd-signature-type">Particle</a></h5>
+							</li>
+						</ul>
+					</div>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+					<a name="_mass" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagProtected">Protected</span> _mass</h3>
+					<div class="tsd-signature tsd-kind-icon">_mass<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;1</span></div>
+					<aside class="tsd-sources">
+						<ul>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L463">Physics.ts:463</a></li>
+						</ul>
+					</aside>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+					<a name="_stiff" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagProtected">Protected</span> _stiff</h3>
+					<div class="tsd-signature tsd-kind-icon">_stiff<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;1</span></div>
+					<aside class="tsd-sources">
+						<ul>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L461">Physics.ts:461</a></li>
+						</ul>
+					</aside>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="length" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> length</h3>
+					<div class="tsd-signature tsd-kind-icon">length<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div>
+					<aside class="tsd-sources">
+						<p>Inherited from Array.length</p>
+						<ul>
+							<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1115</li>
+						</ul>
+					</aside>
+					<div class="tsd-comment tsd-typography">
+						<div class="lead">
+							<p>Gets or sets the length of the array. This is a number one higher than the highest element defined in an array.</p>
+						</div>
+					</div>
+				</section>
+			</section>
+			<section class="tsd-panel-group tsd-member-group ">
+				<h2>Accessors</h2>
+				<section class="tsd-panel tsd-member tsd-kind-accessor tsd-parent-kind-class tsd-is-inherited">
+					<a name="id" class="tsd-anchor"></a>
+					<h3>id</h3>
+					<ul class="tsd-signatures tsd-kind-accessor tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">get</span> id<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></li>
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">set</span> id<span class="tsd-signature-symbol">(</span>s<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#id">id</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L522">Pt.ts:522</a></li>
+								</ul>
+							</aside>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#id">id</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L523">Pt.ts:523</a></li>
+								</ul>
+							</aside>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>s: <span class="tsd-signature-type">string</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-accessor tsd-parent-kind-class">
+					<a name="mass" class="tsd-anchor"></a>
+					<h3>mass</h3>
+					<ul class="tsd-signatures tsd-kind-accessor tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">get</span> mass<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">set</span> mass<span class="tsd-signature-symbol">(</span>m<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L511">Physics.ts:511</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get mass of this body.</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L512">Physics.ts:512</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get mass of this body.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>m: <span class="tsd-signature-type">number</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-get-signature tsd-parent-kind-class tsd-is-inherited">
+					<a name="p1" class="tsd-anchor"></a>
+					<h3>p1</h3>
+					<ul class="tsd-signatures tsd-kind-get-signature tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">get</span> p1<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#p1">p1</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L526">Pt.ts:526</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>The first Pt in this group</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-get-signature tsd-parent-kind-class tsd-is-inherited">
+					<a name="p2" class="tsd-anchor"></a>
+					<h3>p2</h3>
+					<ul class="tsd-signatures tsd-kind-get-signature tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">get</span> p2<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#p2">p2</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L529">Pt.ts:529</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>The second Pt in this group</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-get-signature tsd-parent-kind-class tsd-is-inherited">
+					<a name="p3" class="tsd-anchor"></a>
+					<h3>p3</h3>
+					<ul class="tsd-signatures tsd-kind-get-signature tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">get</span> p3<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#p3">p3</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L532">Pt.ts:532</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>The third Pt in this group</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-get-signature tsd-parent-kind-class tsd-is-inherited">
+					<a name="p4" class="tsd-anchor"></a>
+					<h3>p4</h3>
+					<ul class="tsd-signatures tsd-kind-get-signature tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">get</span> p4<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#p4">p4</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L535">Pt.ts:535</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>The forth Pt in this group</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-get-signature tsd-parent-kind-class tsd-is-inherited">
+					<a name="q1" class="tsd-anchor"></a>
+					<h3>q1</h3>
+					<ul class="tsd-signatures tsd-kind-get-signature tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">get</span> q1<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#q1">q1</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L538">Pt.ts:538</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>The last Pt in this group</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-get-signature tsd-parent-kind-class tsd-is-inherited">
+					<a name="q2" class="tsd-anchor"></a>
+					<h3>q2</h3>
+					<ul class="tsd-signatures tsd-kind-get-signature tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">get</span> q2<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#q2">q2</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L541">Pt.ts:541</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>The second-last Pt in this group</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-get-signature tsd-parent-kind-class tsd-is-inherited">
+					<a name="q3" class="tsd-anchor"></a>
+					<h3>q3</h3>
+					<ul class="tsd-signatures tsd-kind-get-signature tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">get</span> q3<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#q3">q3</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L544">Pt.ts:544</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>The third-last Pt in this group</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-get-signature tsd-parent-kind-class tsd-is-inherited">
+					<a name="q4" class="tsd-anchor"></a>
+					<h3>q4</h3>
+					<ul class="tsd-signatures tsd-kind-get-signature tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">get</span> q4<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#q4">q4</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L547">Pt.ts:547</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>The forth-last Pt in this group</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+			</section>
+			<section class="tsd-panel-group tsd-member-group ">
+				<h2>Methods</h2>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="_matrixadd" class="tsd-anchor"></a>
+					<h3>$matrix<wbr>Add</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">$matrix<wbr>Add<span class="tsd-signature-symbol">(</span>g<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.group.html" class="tsd-signature-type">Group</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#_matrixadd">$matrixAdd</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L854">Pt.ts:854</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Apply this group as a matrix and calculate matrix addition</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>g: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a scalar number, an array of numeric arrays, or a group of Pt</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signature-type">Group</a></h4>
+							<p>a new Group</p>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="_matrixmultiply" class="tsd-anchor"></a>
+					<h3>$matrix<wbr>Multiply</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">$matrix<wbr>Multiply<span class="tsd-signature-symbol">(</span>g<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span>, transposed<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">boolean</span>, elementwise<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.group.html" class="tsd-signature-type">Group</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#_matrixmultiply">$matrixMultiply</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L866">Pt.ts:866</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Apply this group as a matrix and calculate matrix multiplication</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>g: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a scalar number, an array of numeric arrays, or a Group of K Pts, each with N dimensions (K-rows, N-columns) -- or if transposed is true, then N Pts with K dimensions</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> transposed: <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;false</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>(Only applicable if it&#39;s not elementwise multiplication) If true, then a and b&#39;s columns should match (ie, each Pt should have the same dimensions). Default is <code>false</code>.</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> elementwise: <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;false</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>if true, then the multiplication is done element-wise. Default is <code>false</code>.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signature-type">Group</a></h4>
+							<p>If not elementwise, this will return a new  Group with M Pt, each with N dimensions (M-rows, N-columns).</p>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="_zip" class="tsd-anchor"></a>
+					<h3>$zip</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">$zip<span class="tsd-signature-symbol">(</span>defaultValue<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">boolean</span>, useLongest<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.group.html" class="tsd-signature-type">Group</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#_zip">$zip</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L885">Pt.ts:885</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Zip a group of Pt. eg, [[1,2],[3,4],[5,6]] =&gt; [[1,3,5],[2,4,6]]</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> defaultValue: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;undefined</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a default value to fill if index out of bound. If not provided, it will throw an error instead.</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> useLongest: <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;false</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>If true, find the longest list of values in a Pt and use its length for zipping. Default is false, which uses the first item&#39;s length for zipping.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signature-type">Group</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="add" class="tsd-anchor"></a>
+					<h3>add</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">add<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#add">add</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L817">Pt.ts:817</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Add scalar or vector values to this group&#39;s Pts.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a list of numbers, an array of number, or an object with {x,y,z,w} properties</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="anchorfrom" class="tsd-anchor"></a>
+					<h3>anchor<wbr>From</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">anchor<wbr>From<span class="tsd-signature-symbol">(</span>ptOrIndex<span class="tsd-signature-symbol">?: </span><a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#anchorfrom">anchorFrom</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L668">Pt.ts:668</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Anchor all the Pts in this Group by its absolute position from a target Pt. (ie, add all Pt with the target anchor to get an absolute position).  All the Pts&#39; values will be updated.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> ptOrIndex: <a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a Pt, or a numeric index to target a specific Pt in this Group</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="anchorto" class="tsd-anchor"></a>
+					<h3>anchor<wbr>To</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">anchor<wbr>To<span class="tsd-signature-symbol">(</span>ptOrIndex<span class="tsd-signature-symbol">?: </span><a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#anchorto">anchorTo</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L661">Pt.ts:661</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Anchor all the Pts in this Group using a target Pt as origin. (ie, subtract all Pt with the target anchor to get a relative position). All the Pts&#39; values will be updated.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> ptOrIndex: <a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a Pt, or a numeric index to target a specific Pt in this Group</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class">
+					<a name="automass" class="tsd-anchor"></a>
+					<h3>auto<wbr>Mass</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon">auto<wbr>Mass<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L523">Physics.ts:523</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Automatically calculate <code>mass</code> to body&#39;s polygon area.</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="boundingbox" class="tsd-anchor"></a>
+					<h3>bounding<wbr>Box</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">bounding<wbr>Box<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.group.html" class="tsd-signature-type">Group</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#boundingbox">boundingBox</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L652">Pt.ts:652</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Find the rectangular bounding box of this group&#39;s Pts.</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signature-type">Group</a></h4>
+							<p>a Group of 2 Pts representing the top-left and bottom-right of the rectangle</p>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="centroid" class="tsd-anchor"></a>
+					<h3>centroid</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">centroid<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#centroid">centroid</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L643">Pt.ts:643</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Find the centroid of this group&#39;s Pts, which is the average middle point.</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="clone" class="tsd-anchor"></a>
+					<h3>clone</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">clone<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.group.html" class="tsd-signature-type">Group</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#clone">clone</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L555">Pt.ts:555</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Depp clone this group and its Pts</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signature-type">Group</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="divide" class="tsd-anchor"></a>
+					<h3>divide</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">divide<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#divide">divide</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L844">Pt.ts:844</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Divide this group&#39;s Pts over scalar or vector values (as element-wise)</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a list of numbers, an array of number, or an object with {x,y,z,w} properties</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="foreachpt" class="tsd-anchor"></a>
+					<h3>for<wbr>Each<wbr>Pt</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">for<wbr>Each<wbr>Pt<span class="tsd-signature-symbol">(</span>ptFn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span>, <span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#foreachpt">forEachPt</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L801">Pt.ts:801</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Update each Pt in this Group with a Pt function</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>ptFn: <span class="tsd-signature-type">string</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>string name of an existing Pt function. Note that the function must return Pt.</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>arguments for the function specified in ptFn</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class">
+					<a name="init" class="tsd-anchor"></a>
+					<h3>init</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon">init<span class="tsd-signature-symbol">(</span>list<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a>, stiff<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L493">Physics.ts:493</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Initiate a body</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>list: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a group of Pts</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> stiff: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;1</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>stiffness value from 0 to 1, where 1 is the most stiff. Default is 1.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="insert" class="tsd-anchor"></a>
+					<h3>insert</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">insert<span class="tsd-signature-symbol">(</span>pts<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a>, index<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#insert">insert</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L605">Pt.ts:605</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Insert a Pt into this group</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>pts: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>Another group of Pts</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> index: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>the index position to insert into</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="interpolate" class="tsd-anchor"></a>
+					<h3>interpolate</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">interpolate<span class="tsd-signature-symbol">(</span>t<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#interpolate">interpolate</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L704">Pt.ts:704</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get an interpolated point on the line segments defined by this Group</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>t: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a value between 0 to 1 usually</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="lines" class="tsd-anchor"></a>
+					<h3>lines</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">lines<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.group.html" class="tsd-signature-type">Group</a><span class="tsd-signature-symbol">[]</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#lines">lines</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L637">Pt.ts:637</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get all the line segments (ie, edges in a graph) of this group</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signature-type">Group</a><span class="tsd-signature-symbol">[]</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class">
+					<a name="link" class="tsd-anchor"></a>
+					<h3>link</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon">link<span class="tsd-signature-symbol">(</span>index1<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, index2<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, stiff<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L535">Physics.ts:535</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Create a linked edge between two points</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>index1: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>first point by index</p>
+									</div>
+								</li>
+								<li>
+									<h5>index2: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>first point by index</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> stiff: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>optionally stiffness value between 0 to 1, where 1 is the most stiff.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class">
+					<a name="linkall" class="tsd-anchor"></a>
+					<h3>link<wbr>All</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon">link<wbr>All<span class="tsd-signature-symbol">(</span>stiff<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L550">Physics.ts:550</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Automatically create links for all the points to preserve the initial body shape. This usually works for regular convex polygon.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>stiff: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>optionally stiffness value between 0 to 1, where 1 is the most stiff.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class">
+					<a name="linkstolines" class="tsd-anchor"></a>
+					<h3>links<wbr>ToLines</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon">links<wbr>ToLines<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.group.html" class="tsd-signature-type">Group</a><span class="tsd-signature-symbol">[]</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L574">Physics.ts:574</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Return a list of all the linked edges as line segments.</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signature-type">Group</a><span class="tsd-signature-symbol">[]</span></h4>
+							<p>an array of Groups, each of which represents an edge</p>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="moveby" class="tsd-anchor"></a>
+					<h3>move<wbr>By</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">move<wbr>By<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#moveby">moveBy</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L717">Pt.ts:717</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Move every Pt&#39;s position by a specific amount. Same as <code>add</code>.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a list of numbers, an array of number, or an object with {x,y,z,w} properties</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="moveto" class="tsd-anchor"></a>
+					<h3>move<wbr>To</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">move<wbr>To<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#moveto">moveTo</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L725">Pt.ts:725</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Move the first Pt in this group to a specific position, and move all the other Pts correspondingly</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a list of numbers, an array of number, or an object with {x,y,z,w} properties</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="multiply" class="tsd-anchor"></a>
+					<h3>multiply</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">multiply<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#multiply">multiply</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L835">Pt.ts:835</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Multiply scalar or vector values (as element-wise) with this group&#39;s Pts.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a list of numbers, an array of number, or an object with {x,y,z,w} properties</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="op" class="tsd-anchor"></a>
+					<h3>op</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">op<span class="tsd-signature-symbol">(</span>fn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#op">op</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L677">Pt.ts:677</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Create an operation using this Group, passing this Group into a custom function&#39;s first parameter.  See the <a href="../../guide/Op-0400.html">Op guide</a> for details.
+									For example: <code>let myOp = group.op( fn ); let result = myOp( [1,2,3] );</code></p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>fn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>any function that takes a Group as its first parameter</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>g1<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a>, <span class="tsd-signature-symbol">...</span>rest<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>g1: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a></h5>
+														</li>
+														<li>
+															<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>rest: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">any</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">function</span></h4>
+							<p>a resulting function that takes other parameters required in <code>fn</code></p>
+							<ul class="tsd-parameters">
+								<li class="tsd-parameter-siganture">
+									<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+										<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>rest<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span></li>
+									</ul>
+									<ul class="tsd-descriptions">
+										<li class="tsd-description">
+											<h4 class="tsd-parameters-title">Parameters</h4>
+											<ul class="tsd-parameters">
+												<li>
+													<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>rest: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+												</li>
+											</ul>
+											<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">any</span></h4>
+										</li>
+									</ul>
+								</li>
+							</ul>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="ops" class="tsd-anchor"></a>
+					<h3>ops</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">ops<span class="tsd-signature-symbol">(</span>fns<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">[]</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#ops">ops</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L691">Pt.ts:691</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>This combines a series of operations into an array. See <code>op()</code> for details.
+									For example: <code>let myOps = pt.ops([fn1, fn2, fn3]); let results = myOps.map( (op) =&gt; op([1,2,3]) );</code></p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>fns: <span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>an array of functions for <code>op</code></p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">[]</span></h4>
+							<p>an array of resulting functions</p>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class">
+					<a name="processbody" class="tsd-anchor"></a>
+					<h3>process<wbr>Body</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon">process<wbr>Body<span class="tsd-signature-symbol">(</span>b<span class="tsd-signature-symbol">: </span><a href="_physics_.body.html" class="tsd-signature-type">Body</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L599">Physics.ts:599</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Check and respond to collisions between two bodies</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>b: <a href="_physics_.body.html" class="tsd-signature-type">Body</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>another body</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class">
+					<a name="processedges" class="tsd-anchor"></a>
+					<h3>process<wbr>Edges</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon">process<wbr>Edges<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L587">Physics.ts:587</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Recalculate all edge constraints</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class">
+					<a name="processparticle" class="tsd-anchor"></a>
+					<h3>process<wbr>Particle</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon">process<wbr>Particle<span class="tsd-signature-symbol">(</span>b<span class="tsd-signature-symbol">: </span><a href="_physics_.particle.html" class="tsd-signature-type">Particle</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L637">Physics.ts:637</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Check and respond to collisions between this body and a particle</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>b: <a href="_physics_.particle.html" class="tsd-signature-type">Particle</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a particle</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="reflect2d" class="tsd-anchor"></a>
+					<h3>reflect2D</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">reflect2D<span class="tsd-signature-symbol">(</span>line<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a>, axis<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#reflect2d">reflect2D</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L778">Pt.ts:778</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Reflect this group&#39;s Pts along a 2D line. Default anchor point is the first Pt in this group.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>line: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a Group of 2 Pts that defines a line for reflection</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> axis: <span class="tsd-signature-type">string</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>optional axis such as &quot;yz&quot; to define a 2D plane of reflection</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="remove" class="tsd-anchor"></a>
+					<h3>remove</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">remove<span class="tsd-signature-symbol">(</span>index<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span>, count<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.group.html" class="tsd-signature-type">Group</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#remove">remove</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L617">Pt.ts:617</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Like Array&#39;s splice function, with support for negative index and a friendlier name.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> index: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>start index, which can be negative (where -1 is at index 0, -2 at index 1, etc)</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> count: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;1</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>number of items to remove</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signature-type">Group</a></h4>
+							<p>The items that are removed.</p>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="rotate2d" class="tsd-anchor"></a>
+					<h3>rotate2D</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">rotate2D<span class="tsd-signature-symbol">(</span>angle<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, anchor<span class="tsd-signature-symbol">?: </span><a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a>, axis<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#rotate2d">rotate2D</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L751">Pt.ts:751</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Rotate this group&#39;s Pt from an anchor point in 2D. Default anchor point is the first Pt in this group.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>angle: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>rotate angle</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> anchor: <a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>optional anchor point to scale from</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> axis: <span class="tsd-signature-type">string</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>optional string such as &quot;yz&quot; to specify a 2D plane</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="scale" class="tsd-anchor"></a>
+					<h3>scale</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">scale<span class="tsd-signature-symbol">(</span>scale<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol"> | </span><a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a>, anchor<span class="tsd-signature-symbol">?: </span><a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#scale">scale</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L737">Pt.ts:737</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Scale this group&#39;s Pts from an anchor point. Default anchor point is the first Pt in this group.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>scale: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol"> | </span><a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>scale ratio</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> anchor: <a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>optional anchor point to scale from</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="segments" class="tsd-anchor"></a>
+					<h3>segments</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">segments<span class="tsd-signature-symbol">(</span>pts_per_segment<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span>, stride<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span>, loopBack<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.group.html" class="tsd-signature-type">Group</a><span class="tsd-signature-symbol">[]</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#segments">segments</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L629">Pt.ts:629</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Split this group into an array of sub-group segments</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> pts_per_segment: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;2</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>number of Pts in each segment</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> stride: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;1</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>forward-step to take</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> loopBack: <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;false</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>if <code>true</code>, always go through the array till the end and loop back to the beginning to complete the segments if needed</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signature-type">Group</a><span class="tsd-signature-symbol">[]</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="shear2d" class="tsd-anchor"></a>
+					<h3>shear2D</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">shear2D<span class="tsd-signature-symbol">(</span>scale<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol"> | </span><a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a>, anchor<span class="tsd-signature-symbol">?: </span><a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a>, axis<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#shear2d">shear2D</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L765">Pt.ts:765</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Shear this group&#39;s Pt from an anchor point in 2D. Default anchor point is the first Pt in this group.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>scale: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol"> | </span><a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a></h5>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> anchor: <a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>optional anchor point to scale from</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> axis: <span class="tsd-signature-type">string</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>optional string such as &quot;yz&quot; to specify a 2D plane</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="sortbydimension" class="tsd-anchor"></a>
+					<h3>sort<wbr>ByDimension</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">sort<wbr>ByDimension<span class="tsd-signature-symbol">(</span>dim<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, desc<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#sortbydimension">sortByDimension</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L791">Pt.ts:791</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Sort this group&#39;s Pts by values in a specific dimension</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>dim: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>dimensional index</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> desc: <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;false</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>if true, sort descending. Default is false (ascending)</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="split" class="tsd-anchor"></a>
+					<h3>split</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">split<span class="tsd-signature-symbol">(</span>chunkSize<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, stride<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span>, loopBack<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.group.html" class="tsd-signature-type">Group</a><span class="tsd-signature-symbol">[]</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#split">split</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L594">Pt.ts:594</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Split this Group into an array of sub-groups</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>chunkSize: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>number of items per sub-group</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> stride: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>forward-steps after each sub-group</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> loopBack: <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;false</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>if <code>true</code>, always go through the array till the end and loop back to the beginning to complete the segments if needed</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signature-type">Group</a><span class="tsd-signature-symbol">[]</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="subtract" class="tsd-anchor"></a>
+					<h3>subtract</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">subtract<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#subtract">subtract</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L826">Pt.ts:826</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Subtract scalar or vector values from this group&#39;s Pts.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a list of numbers, an array of number, or an object with {x,y,z,w} properties</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="tostring" class="tsd-anchor"></a>
+					<h3>to<wbr>String</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">to<wbr>String<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#tostring">toString</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L893">Pt.ts:893</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get a string representation of this group</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="zipslice" class="tsd-anchor"></a>
+					<h3>zip<wbr>Slice</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">zip<wbr>Slice<span class="tsd-signature-symbol">(</span>index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, defaultValue<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#zipslice">zipSlice</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L876">Pt.ts:876</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Zip one slice of an array of Pt. Imagine the Pts are organized in rows, then this function will take the values in a specific column.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>index: <span class="tsd-signature-type">number</span></h5>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> defaultValue: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;false</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a default value to fill if index out of bound. If not provided, it will throw an error instead.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="concat" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> concat</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">concat<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>items<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></li>
+						<li class="tsd-signature tsd-kind-icon">concat<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>items<span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">(</span><span class="tsd-signature-type">T</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">T</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.concat</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1134</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Combines two or more arrays.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>items: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>Additional items to add to the end of array1.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.concat</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1139</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Combines two or more arrays.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>items: <span class="tsd-signature-symbol">(</span><span class="tsd-signature-type">T</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">T</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>Additional items to add to the end of array1.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+					<a name="every" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> every</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">every<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+						<li class="tsd-signature tsd-kind-icon">every<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+						<li class="tsd-signature tsd-kind-icon">every&lt;Z&gt;<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.every</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1199</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Determines whether all the members of an array satisfy the specified test.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>A function that accepts up to three arguments. The every method calls the callbackfn function for each element in array1 until the callbackfn returns false, or until the end of the array.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.every</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1200</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">undefined</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.every</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1201</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>Z</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span>, value<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">Z</span></h5>
+														</li>
+														<li>
+															<h5>value: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">Z</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+					<a name="filter" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> filter</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">filter<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></li>
+						<li class="tsd-signature tsd-kind-icon">filter<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></li>
+						<li class="tsd-signature tsd-kind-icon">filter&lt;Z&gt;<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.filter</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1263</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Returns the elements of an array that meet the condition specified in a callback function.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>A function that accepts up to three arguments. The filter method calls the callbackfn function one time for each element in the array.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">any</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.filter</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1264</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">any</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">undefined</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.filter</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1265</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>Z</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span>, value<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">Z</span></h5>
+														</li>
+														<li>
+															<h5>value: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">any</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">Z</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+					<a name="foreach" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> for<wbr>Each</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">for<wbr>Each<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+						<li class="tsd-signature tsd-kind-icon">for<wbr>Each<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+						<li class="tsd-signature tsd-kind-icon">for<wbr>Each&lt;Z&gt;<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.forEach</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1215</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Performs the specified action for each element in an array.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>A function that accepts up to three arguments. forEach calls the callbackfn function one time for each element in the array.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.forEach</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1216</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">undefined</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.forEach</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1217</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>Z</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span>, value<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">Z</span></h5>
+														</li>
+														<li>
+															<h5>value: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">Z</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="fromarray" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> from<wbr>Array</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">from<wbr>Array<span class="tsd-signature-symbol">(</span>list<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.group.html" class="tsd-signature-type">Group</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#fromarray">fromArray</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L569">Pt.ts:569</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Convert an array of numeric arrays into a Group of Pts</p>
+								</div>
+								<dl class="tsd-comment-tags">
+									<dt>example</dt>
+									<dd><p><code>Group.fromArray( [[1,2], [3,4], [5,6]] )</code></p>
+									</dd>
+								</dl>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>list: <a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>an array of numeric arrays</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signature-type">Group</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-static">
+					<a name="fromgroup" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> from<wbr>Group</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">from<wbr>Group<span class="tsd-signature-symbol">(</span>list<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a>, stiff<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span>, autoLink<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">boolean</span>, autoMass<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_physics_.body.html" class="tsd-signature-type">Body</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L480">Physics.ts:480</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Create and populate a body with a group of Pts.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>list: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a group of Pts</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> stiff: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;1</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>stiffness value from 0 to 1, where 1 is the most stiff. Default is 1.</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> autoLink: <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;true</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>Automatically create links between the Pts. This usually works for regular convex polygons. Default is true.</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> autoMass: <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;true</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>Automatically calculate the mass based on the area of the polygon. Default is true.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_physics_.body.html" class="tsd-signature-type">Body</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="fromptarray" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> from<wbr>PtArray</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">from<wbr>PtArray<span class="tsd-signature-symbol">(</span>list<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.group.html" class="tsd-signature-type">Group</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.group.html">Group</a>.<a href="_pt_.group.html#fromptarray">fromPtArray</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L583">Pt.ts:583</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Convert an array of Pts into a Group.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>list: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>an array of Pts</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.group.html" class="tsd-signature-type">Group</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="indexof" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> index<wbr>Of</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">index<wbr>Of<span class="tsd-signature-symbol">(</span>searchElement<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, fromIndex<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.indexOf</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1187</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Returns the index of the first occurrence of a value in an array.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>searchElement: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>The value to locate in the array.</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> fromIndex: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>The array index at which to begin the search. If fromIndex is omitted, the search starts at index 0.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="join" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> join</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">join<span class="tsd-signature-symbol">(</span>separator<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.join</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1144</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Adds all the elements of an array separated by the specified separator string.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> separator: <span class="tsd-signature-type">string</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>A string used to separate one element of an array from the next in the resulting String. If omitted, the array elements are separated with a comma.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="lastindexof" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> last<wbr>Index<wbr>Of</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">last<wbr>Index<wbr>Of<span class="tsd-signature-symbol">(</span>searchElement<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, fromIndex<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.lastIndexOf</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1193</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Returns the index of the last occurrence of a specified value in an array.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>searchElement: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>The value to locate in the array.</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> fromIndex: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>The array index at which to begin the search. If fromIndex is omitted, the search starts at the last index in the array.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+					<a name="map" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> map</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">map&lt;U&gt;<span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">[</span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">]</span>, callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">[</span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">]</span></li>
+						<li class="tsd-signature tsd-kind-icon">map&lt;U&gt;<span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">[</span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">]</span>, callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">[</span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">]</span></li>
+						<li class="tsd-signature tsd-kind-icon">map&lt;Z, U&gt;<span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">[</span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">]</span>, callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">[</span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">]</span></li>
+						<li class="tsd-signature tsd-kind-icon">map&lt;U&gt;<span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">[</span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">]</span>, callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">[</span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">]</span></li>
+						<li class="tsd-signature tsd-kind-icon">map&lt;U&gt;<span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">[</span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">]</span>, callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">[</span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">]</span></li>
+						<li class="tsd-signature tsd-kind-icon">map&lt;Z, U&gt;<span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">[</span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">]</span>, callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">[</span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">]</span></li>
+						<li class="tsd-signature tsd-kind-icon">map&lt;U&gt;<span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">[</span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">]</span>, callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">[</span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">]</span></li>
+						<li class="tsd-signature tsd-kind-icon">map&lt;U&gt;<span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">[</span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">]</span>, callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">[</span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">]</span></li>
+						<li class="tsd-signature tsd-kind-icon">map&lt;Z, U&gt;<span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">[</span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">]</span>, callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">[</span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">]</span></li>
+						<li class="tsd-signature tsd-kind-icon">map&lt;U&gt;<span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">[</span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">]</span>, callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">[</span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">]</span></li>
+						<li class="tsd-signature tsd-kind-icon">map&lt;U&gt;<span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">[</span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">]</span>, callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">[</span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">]</span></li>
+						<li class="tsd-signature tsd-kind-icon">map&lt;Z, U&gt;<span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">[</span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">]</span>, callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">[</span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">]</span></li>
+						<li class="tsd-signature tsd-kind-icon">map&lt;U&gt;<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">[]</span></li>
+						<li class="tsd-signature tsd-kind-icon">map&lt;U&gt;<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">[]</span></li>
+						<li class="tsd-signature tsd-kind-icon">map&lt;Z, U&gt;<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">[]</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.map</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1223</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Calls a defined callback function on each element of an array, and returns an array that contains the results.</p>
+								</div>
+							</div>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>U</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>this: <span class="tsd-signature-symbol">[</span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">]</span></h5>
+								</li>
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>A function that accepts up to three arguments. The map method calls the callbackfn function one time for each element in the array.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">U</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-symbol">[</span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">]</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.map</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1224</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>U</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>this: <span class="tsd-signature-symbol">[</span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">]</span></h5>
+								</li>
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">U</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">undefined</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-symbol">[</span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">]</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.map</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1225</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>Z</h4>
+								</li>
+								<li>
+									<h4>U</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>this: <span class="tsd-signature-symbol">[</span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">]</span></h5>
+								</li>
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span>, value<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">Z</span></h5>
+														</li>
+														<li>
+															<h5>value: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">U</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">Z</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-symbol">[</span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">]</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.map</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1231</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Calls a defined callback function on each element of an array, and returns an array that contains the results.</p>
+								</div>
+							</div>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>U</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>this: <span class="tsd-signature-symbol">[</span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">]</span></h5>
+								</li>
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>A function that accepts up to three arguments. The map method calls the callbackfn function one time for each element in the array.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">U</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-symbol">[</span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">]</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.map</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1232</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>U</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>this: <span class="tsd-signature-symbol">[</span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">]</span></h5>
+								</li>
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">U</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">undefined</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-symbol">[</span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">]</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.map</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1233</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>Z</h4>
+								</li>
+								<li>
+									<h4>U</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>this: <span class="tsd-signature-symbol">[</span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">]</span></h5>
+								</li>
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span>, value<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">Z</span></h5>
+														</li>
+														<li>
+															<h5>value: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">U</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">Z</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-symbol">[</span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">]</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.map</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1239</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Calls a defined callback function on each element of an array, and returns an array that contains the results.</p>
+								</div>
+							</div>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>U</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>this: <span class="tsd-signature-symbol">[</span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">]</span></h5>
+								</li>
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>A function that accepts up to three arguments. The map method calls the callbackfn function one time for each element in the array.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">U</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-symbol">[</span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">]</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.map</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1240</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>U</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>this: <span class="tsd-signature-symbol">[</span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">]</span></h5>
+								</li>
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">U</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">undefined</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-symbol">[</span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">]</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.map</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1241</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>Z</h4>
+								</li>
+								<li>
+									<h4>U</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>this: <span class="tsd-signature-symbol">[</span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">]</span></h5>
+								</li>
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span>, value<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">Z</span></h5>
+														</li>
+														<li>
+															<h5>value: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">U</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">Z</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-symbol">[</span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">]</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.map</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1247</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Calls a defined callback function on each element of an array, and returns an array that contains the results.</p>
+								</div>
+							</div>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>U</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>this: <span class="tsd-signature-symbol">[</span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">]</span></h5>
+								</li>
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>A function that accepts up to three arguments. The map method calls the callbackfn function one time for each element in the array.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">U</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-symbol">[</span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">]</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.map</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1248</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>U</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>this: <span class="tsd-signature-symbol">[</span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">]</span></h5>
+								</li>
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">U</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">undefined</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-symbol">[</span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">]</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.map</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1249</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>Z</h4>
+								</li>
+								<li>
+									<h4>U</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>this: <span class="tsd-signature-symbol">[</span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">, </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">]</span></h5>
+								</li>
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span>, value<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">Z</span></h5>
+														</li>
+														<li>
+															<h5>value: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">U</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">Z</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-symbol">[</span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">]</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.map</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1255</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Calls a defined callback function on each element of an array, and returns an array that contains the results.</p>
+								</div>
+							</div>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>U</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>A function that accepts up to three arguments. The map method calls the callbackfn function one time for each element in the array.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">U</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">[]</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.map</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1256</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>U</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">U</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">undefined</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">[]</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.map</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1257</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>Z</h4>
+								</li>
+								<li>
+									<h4>U</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span>, value<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">Z</span></h5>
+														</li>
+														<li>
+															<h5>value: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">U</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">Z</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">[]</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="pop" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> pop</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">pop<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">undefined</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.pop</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1129</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Removes the last element from an array and returns it.</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>
+								<span class="tsd-signature-symbol"> | </span>
+								<span class="tsd-signature-type">undefined</span>
+							</h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="push" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> push</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">push<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>items<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.push</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1125</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Appends new elements to an array, and returns the new length of the array.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>items: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>New elements of the Array.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+					<a name="reduce" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> reduce</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">reduce<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, initialValue<span class="tsd-signature-symbol">?: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+						<li class="tsd-signature tsd-kind-icon">reduce&lt;U&gt;<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, initialValue<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.reduce</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1271</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Calls the specified callback function for all the elements in an array. The return value of the callback function is the accumulated result, and is provided as an argument in the next call to the callback function.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>A function that accepts up to four arguments. The reduce method calls the callbackfn function one time for each element in the array.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>previousValue<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, currentValue<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, currentIndex<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>previousValue: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>currentValue: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>currentIndex: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> initialValue: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>If initialValue is specified, it is used as the initial value to start the accumulation. The first call to the callbackfn function provides this value as an argument instead of an array value.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.reduce</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1277</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Calls the specified callback function for all the elements in an array. The return value of the callback function is the accumulated result, and is provided as an argument in the next call to the callback function.</p>
+								</div>
+							</div>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>U</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>A function that accepts up to four arguments. The reduce method calls the callbackfn function one time for each element in the array.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>previousValue<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span>, currentValue<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, currentIndex<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>previousValue: <span class="tsd-signature-type">U</span></h5>
+														</li>
+														<li>
+															<h5>currentValue: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>currentIndex: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">U</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>initialValue: <span class="tsd-signature-type">U</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>If initialValue is specified, it is used as the initial value to start the accumulation. The first call to the callbackfn function provides this value as an argument instead of an array value.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">U</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+					<a name="reduceright" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> reduce<wbr>Right</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">reduce<wbr>Right<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, initialValue<span class="tsd-signature-symbol">?: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+						<li class="tsd-signature tsd-kind-icon">reduce<wbr>Right&lt;U&gt;<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, initialValue<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.reduceRight</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1283</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Calls the specified callback function for all the elements in an array, in descending order. The return value of the callback function is the accumulated result, and is provided as an argument in the next call to the callback function.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>A function that accepts up to four arguments. The reduceRight method calls the callbackfn function one time for each element in the array.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>previousValue<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, currentValue<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, currentIndex<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>previousValue: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>currentValue: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>currentIndex: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> initialValue: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>If initialValue is specified, it is used as the initial value to start the accumulation. The first call to the callbackfn function provides this value as an argument instead of an array value.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.reduceRight</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1289</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Calls the specified callback function for all the elements in an array, in descending order. The return value of the callback function is the accumulated result, and is provided as an argument in the next call to the callback function.</p>
+								</div>
+							</div>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>U</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>A function that accepts up to four arguments. The reduceRight method calls the callbackfn function one time for each element in the array.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>previousValue<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span>, currentValue<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, currentIndex<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>previousValue: <span class="tsd-signature-type">U</span></h5>
+														</li>
+														<li>
+															<h5>currentValue: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>currentIndex: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">U</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>initialValue: <span class="tsd-signature-type">U</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>If initialValue is specified, it is used as the initial value to start the accumulation. The first call to the callbackfn function provides this value as an argument instead of an array value.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">U</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="reverse" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> reverse</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">reverse<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.reverse</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1148</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Reverses the elements in an Array.</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="shift" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> shift</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">shift<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">undefined</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.shift</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1152</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Removes the first element from an array and returns it.</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>
+								<span class="tsd-signature-symbol"> | </span>
+								<span class="tsd-signature-type">undefined</span>
+							</h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="slice" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> slice</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">slice<span class="tsd-signature-symbol">(</span>start<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span>, end<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.slice</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1158</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Returns a section of an array.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> start: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>The beginning of the specified portion of the array.</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> end: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>The end of the specified portion of the array.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+					<a name="some" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> some</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">some<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+						<li class="tsd-signature tsd-kind-icon">some<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+						<li class="tsd-signature tsd-kind-icon">some&lt;Z&gt;<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.some</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1207</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Determines whether the specified callback function returns true for any element of an array.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>A function that accepts up to three arguments. The some method calls the callbackfn function for each element in array1 until the callbackfn returns true, or until the end of the array.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.some</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1208</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">undefined</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.some</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1209</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>Z</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span>, value<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">Z</span></h5>
+														</li>
+														<li>
+															<h5>value: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">Z</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="sort" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> sort</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">sort<span class="tsd-signature-symbol">(</span>compareFn<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.sort</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1163</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Sorts an array.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> compareFn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>The name of the function used to determine the order of the elements. If omitted, the elements are sorted in ascending, ASCII character order.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>a<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, b<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>a: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+														<li>
+															<h5>b: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="splice" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> splice</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">splice<span class="tsd-signature-symbol">(</span>start<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, deleteCount<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></li>
+						<li class="tsd-signature tsd-kind-icon">splice<span class="tsd-signature-symbol">(</span>start<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, deleteCount<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, <span class="tsd-signature-symbol">...</span>items<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.splice</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1169</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Removes elements from an array and, if necessary, inserts new elements in their place, returning the deleted elements.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>start: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>The zero-based location in the array from which to start removing elements.</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> deleteCount: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>The number of elements to remove.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.splice</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1176</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Removes elements from an array and, if necessary, inserts new elements in their place, returning the deleted elements.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>start: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>The zero-based location in the array from which to start removing elements.</p>
+									</div>
+								</li>
+								<li>
+									<h5>deleteCount: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>The number of elements to remove.</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>items: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>Elements to insert into the array in place of the deleted elements.</p>
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+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h4>
+						</li>
+					</ul>
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+					<a name="tolocalestring" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> to<wbr>Locale<wbr>String</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">to<wbr>Locale<wbr>String<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.toLocaleString</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1120</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="tostring-1" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> to<wbr>String</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">to<wbr>String<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></li>
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+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.toString</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1119</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Returns a string representation of an array.</p>
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+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4>
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+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="unshift" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> unshift</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">unshift<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>items<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
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+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Array.unshift</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:1181</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Inserts new elements at the start of an array.</p>
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+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>items: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>Elements to insert at the start of the Array.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+					</ul>
+				</section>
+			</section>
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+		<div class="col-4 col-menu menu-sticky-wrap menu-highlight">
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+					<li class="globals  ">
+						<a href="../index.html"><em>Globals</em></a>
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+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_bound_.html">"<wbr>Bound"</a>
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+						<a href="../modules/_canvas_.html">"<wbr>Canvas"</a>
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+						<a href="../modules/_color_.html">"<wbr>Color"</a>
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+						<a href="../modules/_create_.html">"<wbr>Create"</a>
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+						<a href="../modules/_dom_.html">"<wbr>Dom"</a>
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+						<a href="../modules/_form_.html">"<wbr>Form"</a>
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+						<a href="../modules/_linearalgebra_.html">"<wbr>Linear<wbr>Algebra"</a>
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+						<a href="../modules/_num_.html">"<wbr>Num"</a>
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+						<a href="../modules/_op_.html">"<wbr>Op"</a>
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+					<li class="current tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
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+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
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+						<a href="../modules/_space_.html">"<wbr>Space"</a>
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+						<a href="../modules/_svg_.html">"<wbr>Svg"</a>
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+						<a href="../modules/_typography_.html">"<wbr>Typography"</a>
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+						<a href="../modules/_ui_.html">"UI"</a>
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+						<a href="../modules/_util_.html">"<wbr>Util"</a>
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+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
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+						<a href="../modules/__module_.html">"_<wbr>module"</a>
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+			<nav class="tsd-navigation secondary menu-sticky">
+				<ul class="before-current">
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+				<ul class="current">
+					<li class="current tsd-kind-class tsd-parent-kind-external-module">
+						<a href="_physics_.body.html" class="tsd-kind-icon">Body</a>
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+							<li class=" tsd-kind-constructor tsd-parent-kind-class tsd-is-overwrite">
+								<a href="_physics_.body.html#constructor" class="tsd-kind-icon">constructor</a>
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+								<a href="_physics_.body.html#_cs" class="tsd-kind-icon">_cs</a>
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+								<a href="_physics_.body.html#_stiff" class="tsd-kind-icon">_stiff</a>
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+							<li class=" tsd-kind-property tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+								<a href="_physics_.body.html#length" class="tsd-kind-icon">length</a>
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+								<a href="_physics_.body.html#q3" class="tsd-kind-icon">q3</a>
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+								<a href="_physics_.body.html#q4" class="tsd-kind-icon">q4</a>
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+								<a href="_physics_.body.html#_matrixadd" class="tsd-kind-icon">$matrix<wbr>Add</a>
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+								<a href="_physics_.body.html#_matrixmultiply" class="tsd-kind-icon">$matrix<wbr>Multiply</a>
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+								<a href="_physics_.body.html#_zip" class="tsd-kind-icon">$zip</a>
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+								<a href="_physics_.body.html#add" class="tsd-kind-icon">add</a>
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+								<a href="_physics_.body.html#anchorfrom" class="tsd-kind-icon">anchor<wbr>From</a>
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+								<a href="_physics_.body.html#anchorto" class="tsd-kind-icon">anchor<wbr>To</a>
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+							<li class=" tsd-kind-method tsd-parent-kind-class">
+								<a href="_physics_.body.html#automass" class="tsd-kind-icon">auto<wbr>Mass</a>
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+								<a href="_physics_.body.html#boundingbox" class="tsd-kind-icon">bounding<wbr>Box</a>
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+								<a href="_physics_.body.html#centroid" class="tsd-kind-icon">centroid</a>
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+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+								<a href="_physics_.body.html#clone" class="tsd-kind-icon">clone</a>
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+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+								<a href="_physics_.body.html#divide" class="tsd-kind-icon">divide</a>
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+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+								<a href="_physics_.body.html#foreachpt" class="tsd-kind-icon">for<wbr>Each<wbr>Pt</a>
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+							<li class=" tsd-kind-method tsd-parent-kind-class">
+								<a href="_physics_.body.html#init" class="tsd-kind-icon">init</a>
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+								<a href="_physics_.body.html#insert" class="tsd-kind-icon">insert</a>
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+								<a href="_physics_.body.html#interpolate" class="tsd-kind-icon">interpolate</a>
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+								<a href="_physics_.body.html#lines" class="tsd-kind-icon">lines</a>
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+								<a href="_physics_.body.html#linkall" class="tsd-kind-icon">link<wbr>All</a>
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+								<a href="_physics_.body.html#linkstolines" class="tsd-kind-icon">links<wbr>ToLines</a>
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+								<a href="_physics_.body.html#moveby" class="tsd-kind-icon">move<wbr>By</a>
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+								<a href="_physics_.body.html#moveto" class="tsd-kind-icon">move<wbr>To</a>
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+								<a href="_physics_.body.html#multiply" class="tsd-kind-icon">multiply</a>
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+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+								<a href="_physics_.body.html#op" class="tsd-kind-icon">op</a>
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+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+								<a href="_physics_.body.html#ops" class="tsd-kind-icon">ops</a>
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+							<li class=" tsd-kind-method tsd-parent-kind-class">
+								<a href="_physics_.body.html#processbody" class="tsd-kind-icon">process<wbr>Body</a>
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+								<a href="_physics_.body.html#processedges" class="tsd-kind-icon">process<wbr>Edges</a>
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+							<li class=" tsd-kind-method tsd-parent-kind-class">
+								<a href="_physics_.body.html#processparticle" class="tsd-kind-icon">process<wbr>Particle</a>
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+								<a href="_physics_.body.html#reflect2d" class="tsd-kind-icon">reflect2D</a>
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+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+								<a href="_physics_.body.html#remove" class="tsd-kind-icon">remove</a>
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+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+								<a href="_physics_.body.html#rotate2d" class="tsd-kind-icon">rotate2D</a>
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+								<a href="_physics_.body.html#scale" class="tsd-kind-icon">scale</a>
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+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+								<a href="_physics_.body.html#segments" class="tsd-kind-icon">segments</a>
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+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+								<a href="_physics_.body.html#shear2d" class="tsd-kind-icon">shear2D</a>
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+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+								<a href="_physics_.body.html#sortbydimension" class="tsd-kind-icon">sort<wbr>ByDimension</a>
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+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+								<a href="_physics_.body.html#split" class="tsd-kind-icon">split</a>
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+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+								<a href="_physics_.body.html#subtract" class="tsd-kind-icon">subtract</a>
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+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+								<a href="_physics_.body.html#tostring" class="tsd-kind-icon">to<wbr>String</a>
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+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+								<a href="_physics_.body.html#zipslice" class="tsd-kind-icon">zip<wbr>Slice</a>
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+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+								<a href="_physics_.body.html#concat" class="tsd-kind-icon">concat</a>
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+								<a href="_physics_.body.html#fromarray" class="tsd-kind-icon">from<wbr>Array</a>
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+								<a href="_physics_.body.html#reduceright" class="tsd-kind-icon">reduce<wbr>Right</a>
+							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+								<a href="_physics_.body.html#reverse" class="tsd-kind-icon">reverse</a>
+							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+								<a href="_physics_.body.html#shift" class="tsd-kind-icon">shift</a>
+							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+								<a href="_physics_.body.html#slice" class="tsd-kind-icon">slice</a>
+							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+								<a href="_physics_.body.html#some" class="tsd-kind-icon">some</a>
+							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+								<a href="_physics_.body.html#sort" class="tsd-kind-icon">sort</a>
+							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+								<a href="_physics_.body.html#splice" class="tsd-kind-icon">splice</a>
+							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+								<a href="_physics_.body.html#tolocalestring" class="tsd-kind-icon">to<wbr>Locale<wbr>String</a>
+							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+								<a href="_physics_.body.html#tostring-1" class="tsd-kind-icon">to<wbr>String</a>
+							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+								<a href="_physics_.body.html#unshift" class="tsd-kind-icon">unshift</a>
+							</li>
+						</ul>
+					</li>
+				</ul>
+				<ul class="after-current">
+					<li class=" tsd-kind-class tsd-parent-kind-external-module">
+						<a href="_physics_.particle.html" class="tsd-kind-icon">Particle</a>
+					</li>
+					<li class=" tsd-kind-class tsd-parent-kind-external-module">
+						<a href="_physics_.world.html" class="tsd-kind-icon">World</a>
+					</li>
+				</ul>
+			</nav>
+		</div>
+	</div>
+</div>
+<footer class="with-border-bottom">
+	<div class="container">
+		<h2>Legend</h2>
+		<div class="tsd-legend-group">
+			<ul class="tsd-legend">
+				<li class="tsd-kind-module"><span class="tsd-kind-icon">Module</span></li>
+				<li class="tsd-kind-object-literal"><span class="tsd-kind-icon">Object literal</span></li>
+				<li class="tsd-kind-variable"><span class="tsd-kind-icon">Variable</span></li>
+				<li class="tsd-kind-function"><span class="tsd-kind-icon">Function</span></li>
+				<li class="tsd-kind-function tsd-has-type-parameter"><span class="tsd-kind-icon">Function with type parameter</span></li>
+				<li class="tsd-kind-index-signature"><span class="tsd-kind-icon">Index signature</span></li>
+				<li class="tsd-kind-type-alias"><span class="tsd-kind-icon">Type alias</span></li>
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+			<ul class="tsd-legend">
+				<li class="tsd-kind-enum"><span class="tsd-kind-icon">Enumeration</span></li>
+				<li class="tsd-kind-enum-member"><span class="tsd-kind-icon">Enumeration member</span></li>
+				<li class="tsd-kind-property tsd-parent-kind-enum"><span class="tsd-kind-icon">Property</span></li>
+				<li class="tsd-kind-method tsd-parent-kind-enum"><span class="tsd-kind-icon">Method</span></li>
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+			<ul class="tsd-legend">
+				<li class="tsd-kind-interface"><span class="tsd-kind-icon">Interface</span></li>
+				<li class="tsd-kind-interface tsd-has-type-parameter"><span class="tsd-kind-icon">Interface with type parameter</span></li>
+				<li class="tsd-kind-constructor tsd-parent-kind-interface"><span class="tsd-kind-icon">Constructor</span></li>
+				<li class="tsd-kind-property tsd-parent-kind-interface"><span class="tsd-kind-icon">Property</span></li>
+				<li class="tsd-kind-method tsd-parent-kind-interface"><span class="tsd-kind-icon">Method</span></li>
+				<li class="tsd-kind-index-signature tsd-parent-kind-interface"><span class="tsd-kind-icon">Index signature</span></li>
+			</ul>
+			<ul class="tsd-legend">
+				<li class="tsd-kind-class"><span class="tsd-kind-icon">Class</span></li>
+				<li class="tsd-kind-class tsd-has-type-parameter"><span class="tsd-kind-icon">Class with type parameter</span></li>
+				<li class="tsd-kind-constructor tsd-parent-kind-class"><span class="tsd-kind-icon">Constructor</span></li>
+				<li class="tsd-kind-property tsd-parent-kind-class"><span class="tsd-kind-icon">Property</span></li>
+				<li class="tsd-kind-method tsd-parent-kind-class"><span class="tsd-kind-icon">Method</span></li>
+				<li class="tsd-kind-accessor tsd-parent-kind-class"><span class="tsd-kind-icon">Accessor</span></li>
+				<li class="tsd-kind-index-signature tsd-parent-kind-class"><span class="tsd-kind-icon">Index signature</span></li>
+			</ul>
+			<ul class="tsd-legend">
+				<li class="tsd-kind-constructor tsd-parent-kind-class tsd-is-inherited"><span class="tsd-kind-icon">Inherited constructor</span></li>
+				<li class="tsd-kind-property tsd-parent-kind-class tsd-is-inherited"><span class="tsd-kind-icon">Inherited property</span></li>
+				<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><span class="tsd-kind-icon">Inherited method</span></li>
+				<li class="tsd-kind-accessor tsd-parent-kind-class tsd-is-inherited"><span class="tsd-kind-icon">Inherited accessor</span></li>
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+			<ul class="tsd-legend">
+				<li class="tsd-kind-property tsd-parent-kind-class tsd-is-protected"><span class="tsd-kind-icon">Protected property</span></li>
+				<li class="tsd-kind-method tsd-parent-kind-class tsd-is-protected"><span class="tsd-kind-icon">Protected method</span></li>
+				<li class="tsd-kind-accessor tsd-parent-kind-class tsd-is-protected"><span class="tsd-kind-icon">Protected accessor</span></li>
+			</ul>
+			<ul class="tsd-legend">
+				<li class="tsd-kind-property tsd-parent-kind-class tsd-is-private"><span class="tsd-kind-icon">Private property</span></li>
+				<li class="tsd-kind-method tsd-parent-kind-class tsd-is-private"><span class="tsd-kind-icon">Private method</span></li>
+				<li class="tsd-kind-accessor tsd-parent-kind-class tsd-is-private"><span class="tsd-kind-icon">Private accessor</span></li>
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+			<ul class="tsd-legend">
+				<li class="tsd-kind-property tsd-parent-kind-class tsd-is-static"><span class="tsd-kind-icon">Static property</span></li>
+				<li class="tsd-kind-call-signature tsd-parent-kind-class tsd-is-static"><span class="tsd-kind-icon">Static method</span></li>
+			</ul>
+		</div>
+	</div>
+</footer>
+<div class="container tsd-generator">
+	<p>Generated using <a href="http://typedoc.org/" target="_blank">TypeDoc</a></p>
+</div>
+<div class="overlay"></div>
+<script src="../assets/js/main.js"></script>
+<script>if (location.protocol == 'file:') document.write('<script src="../assets/js/search.js"><' + '/script>');</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/docs/classes/_physics_.particle.html b/docs/classes/_physics_.particle.html
new file mode 100644
index 00000000..351dc7e4
--- /dev/null
+++ b/docs/classes/_physics_.particle.html
@@ -0,0 +1,4813 @@
+<!doctype html>
+<html class="default no-js">
+<head>
+	<meta charset="utf-8">
+	<meta http-equiv="X-UA-Compatible" content="IE=edge">
+	<title>Particle | Pts</title>
+	<meta name="description" content="">
+	<meta name="viewport" content="width=device-width, initial-scale=1">
+	<link rel="stylesheet" href="../assets/css/main.css">
+</head>
+<body>
+<header>
+	<div class="tsd-page-toolbar">
+		<div class="container">
+			<div class="table-wrap">
+				<div class="table-cell" id="tsd-search" data-index="../assets/js/search.js" data-base="..">
+					<div class="field">
+						<label for="tsd-search-field" class="tsd-widget search no-caption">Search</label>
+						<input id="tsd-search-field" type="text" />
+					</div>
+					<ul class="results">
+						<li class="state loading">Preparing search index...</li>
+						<li class="state failure">The search index is not available</li>
+					</ul>
+					<a href="../index.html" class="title">Pts</a>
+				</div>
+				<div class="table-cell" id="tsd-widgets">
+					<div id="tsd-filter">
+						<a href="#" class="tsd-widget options no-caption" data-toggle="options">Options</a>
+						<div class="tsd-filter-group">
+							<div class="tsd-select" id="tsd-filter-visibility">
+								<span class="tsd-select-label">All</span>
+								<ul class="tsd-select-list">
+									<li data-value="public">Public</li>
+									<li data-value="protected">Public/Protected</li>
+									<li data-value="private" class="selected">All</li>
+								</ul>
+							</div>
+							<input type="checkbox" id="tsd-filter-inherited" checked />
+							<label class="tsd-widget" for="tsd-filter-inherited">Inherited</label>
+							<input type="checkbox" id="tsd-filter-externals" checked />
+							<label class="tsd-widget" for="tsd-filter-externals">Externals</label>
+							<input type="checkbox" id="tsd-filter-only-exported" />
+							<label class="tsd-widget" for="tsd-filter-only-exported">Only exported</label>
+						</div>
+					</div>
+					<a href="#" class="tsd-widget menu no-caption" data-toggle="menu">Menu</a>
+				</div>
+			</div>
+		</div>
+	</div>
+	<div class="tsd-page-title">
+		<div class="container">
+			<ul class="tsd-breadcrumb">
+				<li>
+					<a href="../index.html">Globals</a>
+				</li>
+				<li>
+					<a href="../modules/_physics_.html">&quot;Physics&quot;</a>
+				</li>
+				<li>
+					<a href="_physics_.particle.html">Particle</a>
+				</li>
+			</ul>
+			<h1>Class Particle</h1>
+		</div>
+	</div>
+</header>
+<div class="container container-main">
+	<div class="row">
+		<div class="col-8 col-content">
+			<section class="tsd-panel tsd-comment">
+				<div class="tsd-comment tsd-typography">
+					<div class="lead">
+						<p>Particle is a Pt that has radius and mass. It&#39;s usually added into <code>World</code> to create physics simulations.</p>
+					</div>
+				</div>
+			</section>
+			<section class="tsd-panel tsd-hierarchy">
+				<h3>Hierarchy</h3>
+				<ul class="tsd-hierarchy">
+					<li>
+						<a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>
+						<ul class="tsd-hierarchy">
+							<li>
+								<span class="target">Particle</span>
+							</li>
+						</ul>
+					</li>
+				</ul>
+			</section>
+			<section class="tsd-panel">
+				<h3>Implements</h3>
+				<ul class="tsd-hierarchy">
+					<li><a href="../interfaces/_pt_.ipt.html" class="tsd-signature-type">IPt</a></li>
+					<li><span class="tsd-signature-type">Iterable</span><span class="tsd-signature-symbol">&lt;</span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">&gt;</span></li>
+				</ul>
+			</section>
+			<section class="tsd-panel tsd-kind-class tsd-parent-kind-external-module">
+				<h3 class="tsd-before-signature">Indexable</h3>
+				<div class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">[</span>index: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">]: </span><span class="tsd-signature-type">number</span></div>
+				<div class="tsd-comment tsd-typography">
+					<div class="lead">
+						<p>Particle is a Pt that has radius and mass. It&#39;s usually added into <code>World</code> to create physics simulations.</p>
+					</div>
+				</div>
+			</section>
+			<section class="tsd-panel-group tsd-index-group">
+				<h2>Index</h2>
+				<section class="tsd-panel tsd-index-panel">
+					<div class="tsd-index-content">
+						<section class="tsd-index-section ">
+							<h3>Constructors</h3>
+							<ul class="tsd-index-list">
+								<li class="tsd-kind-constructor tsd-parent-kind-class tsd-is-overwrite"><a href="_physics_.particle.html#constructor" class="tsd-kind-icon">constructor</a></li>
+							</ul>
+						</section>
+						<section class="tsd-index-section ">
+							<h3>Properties</h3>
+							<ul class="tsd-index-list">
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-protected"><a href="_physics_.particle.html#_body" class="tsd-kind-icon">_body</a></li>
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-protected"><a href="_physics_.particle.html#_force" class="tsd-kind-icon">_force</a></li>
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-inherited tsd-is-protected"><a href="_physics_.particle.html#_id" class="tsd-kind-icon">_id</a></li>
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-protected"><a href="_physics_.particle.html#_lock" class="tsd-kind-icon">_lock</a></li>
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-protected"><a href="_physics_.particle.html#_lockpt" class="tsd-kind-icon">_lock<wbr>Pt</a></li>
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-protected"><a href="_physics_.particle.html#_mass" class="tsd-kind-icon">_mass</a></li>
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-protected"><a href="_physics_.particle.html#_prev" class="tsd-kind-icon">_prev</a></li>
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-protected"><a href="_physics_.particle.html#_radius" class="tsd-kind-icon">_radius</a></li>
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.particle.html#bytes_per_element" class="tsd-kind-icon">BYTES_<wbr>PER_<wbr>ELEMENT</a></li>
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.particle.html#buffer" class="tsd-kind-icon">buffer</a></li>
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.particle.html#bytelength" class="tsd-kind-icon">byte<wbr>Length</a></li>
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.particle.html#byteoffset" class="tsd-kind-icon">byte<wbr>Offset</a></li>
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.particle.html#length" class="tsd-kind-icon">length</a></li>
+							</ul>
+						</section>
+						<section class="tsd-index-section ">
+							<h3>Accessors</h3>
+							<ul class="tsd-index-list">
+								<li class="tsd-kind-accessor tsd-parent-kind-class"><a href="_physics_.particle.html#body" class="tsd-kind-icon">body</a></li>
+								<li class="tsd-kind-get-signature tsd-parent-kind-class"><a href="_physics_.particle.html#changed" class="tsd-kind-icon">changed</a></li>
+								<li class="tsd-kind-accessor tsd-parent-kind-class"><a href="_physics_.particle.html#force" class="tsd-kind-icon">force</a></li>
+								<li class="tsd-kind-accessor tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#id" class="tsd-kind-icon">id</a></li>
+								<li class="tsd-kind-accessor tsd-parent-kind-class"><a href="_physics_.particle.html#lock" class="tsd-kind-icon">lock</a></li>
+								<li class="tsd-kind-accessor tsd-parent-kind-class"><a href="_physics_.particle.html#mass" class="tsd-kind-icon">mass</a></li>
+								<li class="tsd-kind-set-signature tsd-parent-kind-class"><a href="_physics_.particle.html#position" class="tsd-kind-icon">position</a></li>
+								<li class="tsd-kind-accessor tsd-parent-kind-class"><a href="_physics_.particle.html#previous" class="tsd-kind-icon">previous</a></li>
+								<li class="tsd-kind-accessor tsd-parent-kind-class"><a href="_physics_.particle.html#radius" class="tsd-kind-icon">radius</a></li>
+								<li class="tsd-kind-accessor tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#w" class="tsd-kind-icon">w</a></li>
+								<li class="tsd-kind-accessor tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#x" class="tsd-kind-icon">x</a></li>
+								<li class="tsd-kind-accessor tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#y" class="tsd-kind-icon">y</a></li>
+								<li class="tsd-kind-accessor tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#z" class="tsd-kind-icon">z</a></li>
+							</ul>
+						</section>
+						<section class="tsd-index-section ">
+							<h3>Methods</h3>
+							<ul class="tsd-index-list">
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#_abs" class="tsd-kind-icon">$abs</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#_add" class="tsd-kind-icon">$add</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#_ceil" class="tsd-kind-icon">$ceil</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#_concat" class="tsd-kind-icon">$concat</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#_cross" class="tsd-kind-icon">$cross</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#_divide" class="tsd-kind-icon">$divide</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#_floor" class="tsd-kind-icon">$floor</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#_max" class="tsd-kind-icon">$max</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#_min" class="tsd-kind-icon">$min</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#_multiply" class="tsd-kind-icon">$multiply</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#_project" class="tsd-kind-icon">$project</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#_round" class="tsd-kind-icon">$round</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#_subtract" class="tsd-kind-icon">$subtract</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#_take" class="tsd-kind-icon">$take</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#_to" class="tsd-kind-icon">$to</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#_unit" class="tsd-kind-icon">$unit</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#abs" class="tsd-kind-icon">abs</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#add" class="tsd-kind-icon">add</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_physics_.particle.html#addforce" class="tsd-kind-icon">add<wbr>Force</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#angle" class="tsd-kind-icon">angle</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#anglebetween" class="tsd-kind-icon">angle<wbr>Between</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#ceil" class="tsd-kind-icon">ceil</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#clone" class="tsd-kind-icon">clone</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_physics_.particle.html#collide" class="tsd-kind-icon">collide</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#cross2d" class="tsd-kind-icon">cross2D</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#divide" class="tsd-kind-icon">divide</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#dot" class="tsd-kind-icon">dot</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#equals" class="tsd-kind-icon">equals</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#floor" class="tsd-kind-icon">floor</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_physics_.particle.html#hit" class="tsd-kind-icon">hit</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#magnitude" class="tsd-kind-icon">magnitude</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#magnitudesq" class="tsd-kind-icon">magnitude<wbr>Sq</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#maxvalue" class="tsd-kind-icon">max<wbr>Value</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#minvalue" class="tsd-kind-icon">min<wbr>Value</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#multiply" class="tsd-kind-icon">multiply</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#op" class="tsd-kind-icon">op</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#ops" class="tsd-kind-icon">ops</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#projectscalar" class="tsd-kind-icon">project<wbr>Scalar</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#reflect2d" class="tsd-kind-icon">reflect2D</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#rotate2d" class="tsd-kind-icon">rotate2D</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#round" class="tsd-kind-icon">round</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#scale" class="tsd-kind-icon">scale</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#shear2d" class="tsd-kind-icon">shear2D</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_physics_.particle.html#size" class="tsd-kind-icon">size</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#subtract" class="tsd-kind-icon">subtract</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#to" class="tsd-kind-icon">to</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#toangle" class="tsd-kind-icon">to<wbr>Angle</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#toarray" class="tsd-kind-icon">to<wbr>Array</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-overwrite"><a href="_physics_.particle.html#tostring" class="tsd-kind-icon">to<wbr>String</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="_physics_.particle.html#unit" class="tsd-kind-icon">unit</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_physics_.particle.html#verlet" class="tsd-kind-icon">verlet</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.particle.html#copywithin" class="tsd-kind-icon">copy<wbr>Within</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static"><a href="_physics_.particle.html#every" class="tsd-kind-icon">every</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.particle.html#fill" class="tsd-kind-icon">fill</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static"><a href="_physics_.particle.html#filter" class="tsd-kind-icon">filter</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static"><a href="_physics_.particle.html#find" class="tsd-kind-icon">find</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static"><a href="_physics_.particle.html#findindex" class="tsd-kind-icon">find<wbr>Index</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static"><a href="_physics_.particle.html#foreach" class="tsd-kind-icon">for<wbr>Each</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.particle.html#indexof" class="tsd-kind-icon">index<wbr>Of</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.particle.html#join" class="tsd-kind-icon">join</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.particle.html#lastindexof" class="tsd-kind-icon">last<wbr>Index<wbr>Of</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.particle.html#make" class="tsd-kind-icon">make</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static"><a href="_physics_.particle.html#map" class="tsd-kind-icon">map</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static"><a href="_physics_.particle.html#reduce" class="tsd-kind-icon">reduce</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static"><a href="_physics_.particle.html#reduceright" class="tsd-kind-icon">reduce<wbr>Right</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.particle.html#reverse" class="tsd-kind-icon">reverse</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.particle.html#set" class="tsd-kind-icon">set</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.particle.html#slice" class="tsd-kind-icon">slice</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static"><a href="_physics_.particle.html#some" class="tsd-kind-icon">some</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.particle.html#sort" class="tsd-kind-icon">sort</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.particle.html#subarray" class="tsd-kind-icon">subarray</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.particle.html#tolocalestring" class="tsd-kind-icon">to<wbr>Locale<wbr>String</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static"><a href="_physics_.particle.html#tostring-1" class="tsd-kind-icon">to<wbr>String</a></li>
+							</ul>
+						</section>
+					</div>
+				</section>
+			</section>
+			<section class="tsd-panel-group tsd-member-group ">
+				<h2>Constructors</h2>
+				<section class="tsd-panel tsd-member tsd-kind-constructor tsd-parent-kind-class tsd-is-overwrite">
+					<a name="constructor" class="tsd-anchor"></a>
+					<h3>constructor</h3>
+					<ul class="tsd-signatures tsd-kind-constructor tsd-parent-kind-class tsd-is-overwrite">
+						<li class="tsd-signature tsd-kind-icon">new <wbr>Particle<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_physics_.particle.html" class="tsd-signature-type">Particle</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Overrides <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#constructor">constructor</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L283">Physics.ts:283</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Create a particle</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<div class="lead">
+											<p>a list of numeric parameters, an array of numbers, or an object with {x,y,z,w} properties</p>
+										</div>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_physics_.particle.html" class="tsd-signature-type">Particle</a></h4>
+						</li>
+					</ul>
+				</section>
+			</section>
+			<section class="tsd-panel-group tsd-member-group ">
+				<h2>Properties</h2>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+					<a name="_body" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagProtected">Protected</span> _body</h3>
+					<div class="tsd-signature tsd-kind-icon">_body<span class="tsd-signature-symbol">:</span> <a href="_physics_.body.html" class="tsd-signature-type">Body</a></div>
+					<aside class="tsd-sources">
+						<ul>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L281">Physics.ts:281</a></li>
+						</ul>
+					</aside>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+					<a name="_force" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagProtected">Protected</span> _force</h3>
+					<div class="tsd-signature tsd-kind-icon">_force<span class="tsd-signature-symbol">:</span> <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol"> =&nbsp;new Pt()</span></div>
+					<aside class="tsd-sources">
+						<ul>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L278">Physics.ts:278</a></li>
+						</ul>
+					</aside>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-inherited tsd-is-protected">
+					<a name="_id" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagProtected">Protected</span> _id</h3>
+					<div class="tsd-signature tsd-kind-icon">_id<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span></div>
+					<aside class="tsd-sources">
+						<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_id">_id</a></p>
+						<ul>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L28">Pt.ts:28</a></li>
+						</ul>
+					</aside>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+					<a name="_lock" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagProtected">Protected</span> _lock</h3>
+					<div class="tsd-signature tsd-kind-icon">_lock<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;false</span></div>
+					<aside class="tsd-sources">
+						<ul>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L282">Physics.ts:282</a></li>
+						</ul>
+					</aside>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+					<a name="_lockpt" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagProtected">Protected</span> _lock<wbr>Pt</h3>
+					<div class="tsd-signature tsd-kind-icon">_lock<wbr>Pt<span class="tsd-signature-symbol">:</span> <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></div>
+					<aside class="tsd-sources">
+						<ul>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L283">Physics.ts:283</a></li>
+						</ul>
+					</aside>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+					<a name="_mass" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagProtected">Protected</span> _mass</h3>
+					<div class="tsd-signature tsd-kind-icon">_mass<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;1</span></div>
+					<aside class="tsd-sources">
+						<ul>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L276">Physics.ts:276</a></li>
+						</ul>
+					</aside>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+					<a name="_prev" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagProtected">Protected</span> _prev</h3>
+					<div class="tsd-signature tsd-kind-icon">_prev<span class="tsd-signature-symbol">:</span> <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol"> =&nbsp;new Pt()</span></div>
+					<aside class="tsd-sources">
+						<ul>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L279">Physics.ts:279</a></li>
+						</ul>
+					</aside>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+					<a name="_radius" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagProtected">Protected</span> _radius</h3>
+					<div class="tsd-signature tsd-kind-icon">_radius<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
+					<aside class="tsd-sources">
+						<ul>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L277">Physics.ts:277</a></li>
+						</ul>
+					</aside>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="bytes_per_element" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> BYTES_<wbr>PER_<wbr>ELEMENT</h3>
+					<div class="tsd-signature tsd-kind-icon">BYTES_<wbr>PER_<wbr>ELEMENT<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div>
+					<aside class="tsd-sources">
+						<p>Inherited from Float32Array.BYTES_PER_ELEMENT</p>
+						<ul>
+							<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3564</li>
+						</ul>
+					</aside>
+					<div class="tsd-comment tsd-typography">
+						<div class="lead">
+							<p>The size in bytes of each element in the array.</p>
+						</div>
+					</div>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="buffer" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> buffer</h3>
+					<div class="tsd-signature tsd-kind-icon">buffer<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">ArrayBuffer</span></div>
+					<aside class="tsd-sources">
+						<p>Inherited from Float32Array.buffer</p>
+						<ul>
+							<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3569</li>
+						</ul>
+					</aside>
+					<div class="tsd-comment tsd-typography">
+						<div class="lead">
+							<p>The ArrayBuffer instance referenced by the array.</p>
+						</div>
+					</div>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="bytelength" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> byte<wbr>Length</h3>
+					<div class="tsd-signature tsd-kind-icon">byte<wbr>Length<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div>
+					<aside class="tsd-sources">
+						<p>Inherited from Float32Array.byteLength</p>
+						<ul>
+							<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3574</li>
+						</ul>
+					</aside>
+					<div class="tsd-comment tsd-typography">
+						<div class="lead">
+							<p>The length in bytes of the array.</p>
+						</div>
+					</div>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="byteoffset" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> byte<wbr>Offset</h3>
+					<div class="tsd-signature tsd-kind-icon">byte<wbr>Offset<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div>
+					<aside class="tsd-sources">
+						<p>Inherited from Float32Array.byteOffset</p>
+						<ul>
+							<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3579</li>
+						</ul>
+					</aside>
+					<div class="tsd-comment tsd-typography">
+						<div class="lead">
+							<p>The offset in bytes of the array.</p>
+						</div>
+					</div>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="length" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> length</h3>
+					<div class="tsd-signature tsd-kind-icon">length<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div>
+					<aside class="tsd-sources">
+						<p>Inherited from Float32Array.length</p>
+						<ul>
+							<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3688</li>
+						</ul>
+					</aside>
+					<div class="tsd-comment tsd-typography">
+						<div class="lead">
+							<p>The length of the array.</p>
+						</div>
+					</div>
+				</section>
+			</section>
+			<section class="tsd-panel-group tsd-member-group ">
+				<h2>Accessors</h2>
+				<section class="tsd-panel tsd-member tsd-kind-accessor tsd-parent-kind-class">
+					<a name="body" class="tsd-anchor"></a>
+					<h3>body</h3>
+					<ul class="tsd-signatures tsd-kind-accessor tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">get</span> body<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_physics_.body.html" class="tsd-signature-type">Body</a></li>
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">set</span> body<span class="tsd-signature-symbol">(</span>b<span class="tsd-signature-symbol">: </span><a href="_physics_.body.html" class="tsd-signature-type">Body</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L316">Physics.ts:316</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get the body of this particle, if any.</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_physics_.body.html" class="tsd-signature-type">Body</a></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L317">Physics.ts:317</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get the body of this particle, if any.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>b: <a href="_physics_.body.html" class="tsd-signature-type">Body</a></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-get-signature tsd-parent-kind-class">
+					<a name="changed" class="tsd-anchor"></a>
+					<h3>changed</h3>
+					<ul class="tsd-signatures tsd-kind-get-signature tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">get</span> changed<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L331">Physics.ts:331</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get the change in position since last time step</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-accessor tsd-parent-kind-class">
+					<a name="force" class="tsd-anchor"></a>
+					<h3>force</h3>
+					<ul class="tsd-signatures tsd-kind-accessor tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">get</span> force<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">set</span> force<span class="tsd-signature-symbol">(</span>g<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L310">Physics.ts:310</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get current accumulated force</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L311">Physics.ts:311</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get current accumulated force</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>g: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-accessor tsd-parent-kind-class tsd-is-inherited">
+					<a name="id" class="tsd-anchor"></a>
+					<h3>id</h3>
+					<ul class="tsd-signatures tsd-kind-accessor tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">get</span> id<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></li>
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">set</span> id<span class="tsd-signature-symbol">(</span>s<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#id">id</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L56">Pt.ts:56</a></li>
+								</ul>
+							</aside>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#id">id</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L57">Pt.ts:57</a></li>
+								</ul>
+							</aside>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>s: <span class="tsd-signature-type">string</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-accessor tsd-parent-kind-class">
+					<a name="lock" class="tsd-anchor"></a>
+					<h3>lock</h3>
+					<ul class="tsd-signatures tsd-kind-accessor tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">get</span> lock<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">set</span> lock<span class="tsd-signature-symbol">(</span>b<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L322">Physics.ts:322</a></li>
+								</ul>
+							</aside>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L323">Physics.ts:323</a></li>
+								</ul>
+							</aside>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>b: <span class="tsd-signature-type">boolean</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-accessor tsd-parent-kind-class">
+					<a name="mass" class="tsd-anchor"></a>
+					<h3>mass</h3>
+					<ul class="tsd-signatures tsd-kind-accessor tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">get</span> mass<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">set</span> mass<span class="tsd-signature-symbol">(</span>m<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L295">Physics.ts:295</a></li>
+								</ul>
+							</aside>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L296">Physics.ts:296</a></li>
+								</ul>
+							</aside>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>m: <span class="tsd-signature-type">number</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-set-signature tsd-parent-kind-class">
+					<a name="position" class="tsd-anchor"></a>
+					<h3>position</h3>
+					<ul class="tsd-signatures tsd-kind-set-signature tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">set</span> position<span class="tsd-signature-symbol">(</span>p<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L337">Physics.ts:337</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Set a new position, and update previous and lock states if needed.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>p: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-accessor tsd-parent-kind-class">
+					<a name="previous" class="tsd-anchor"></a>
+					<h3>previous</h3>
+					<ul class="tsd-signatures tsd-kind-accessor tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">get</span> previous<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">set</span> previous<span class="tsd-signature-symbol">(</span>p<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L304">Physics.ts:304</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get previous position</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L305">Physics.ts:305</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get previous position</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>p: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-accessor tsd-parent-kind-class">
+					<a name="radius" class="tsd-anchor"></a>
+					<h3>radius</h3>
+					<ul class="tsd-signatures tsd-kind-accessor tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">get</span> radius<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">set</span> radius<span class="tsd-signature-symbol">(</span>f<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L298">Physics.ts:298</a></li>
+								</ul>
+							</aside>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L299">Physics.ts:299</a></li>
+								</ul>
+							</aside>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>f: <span class="tsd-signature-type">number</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-accessor tsd-parent-kind-class tsd-is-inherited">
+					<a name="w" class="tsd-anchor"></a>
+					<h3>w</h3>
+					<ul class="tsd-signatures tsd-kind-accessor tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">get</span> w<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">set</span> w<span class="tsd-signature-symbol">(</span>n<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#w">w</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L62">Pt.ts:62</a></li>
+								</ul>
+							</aside>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#w">w</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L67">Pt.ts:67</a></li>
+								</ul>
+							</aside>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>n: <span class="tsd-signature-type">number</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-accessor tsd-parent-kind-class tsd-is-inherited">
+					<a name="x" class="tsd-anchor"></a>
+					<h3>x</h3>
+					<ul class="tsd-signatures tsd-kind-accessor tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">get</span> x<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">set</span> x<span class="tsd-signature-symbol">(</span>n<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#x">x</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L59">Pt.ts:59</a></li>
+								</ul>
+							</aside>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#x">x</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L64">Pt.ts:64</a></li>
+								</ul>
+							</aside>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>n: <span class="tsd-signature-type">number</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-accessor tsd-parent-kind-class tsd-is-inherited">
+					<a name="y" class="tsd-anchor"></a>
+					<h3>y</h3>
+					<ul class="tsd-signatures tsd-kind-accessor tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">get</span> y<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">set</span> y<span class="tsd-signature-symbol">(</span>n<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#y">y</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L60">Pt.ts:60</a></li>
+								</ul>
+							</aside>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#y">y</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L65">Pt.ts:65</a></li>
+								</ul>
+							</aside>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>n: <span class="tsd-signature-type">number</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-accessor tsd-parent-kind-class tsd-is-inherited">
+					<a name="z" class="tsd-anchor"></a>
+					<h3>z</h3>
+					<ul class="tsd-signatures tsd-kind-accessor tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">get</span> z<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">set</span> z<span class="tsd-signature-symbol">(</span>n<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#z">z</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L61">Pt.ts:61</a></li>
+								</ul>
+							</aside>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#z">z</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L66">Pt.ts:66</a></li>
+								</ul>
+							</aside>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>n: <span class="tsd-signature-type">number</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+			</section>
+			<section class="tsd-panel-group tsd-member-group ">
+				<h2>Methods</h2>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="_abs" class="tsd-anchor"></a>
+					<h3>$abs</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">$abs<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_abs">$abs</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L321">Pt.ts:321</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get a new Pt with absolute values of this Pt</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="_add" class="tsd-anchor"></a>
+					<h3>$add</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">$add<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_add">$add</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L190">Pt.ts:190</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Like <code>add</code>, but returns result as a new Pt</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="_ceil" class="tsd-anchor"></a>
+					<h3>$ceil</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">$ceil<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_ceil">$ceil</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L355">Pt.ts:355</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get a new Pt with ceil values of this Pt</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="_concat" class="tsd-anchor"></a>
+					<h3>$concat</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">$concat<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_concat">$concat</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L172">Pt.ts:172</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Concatenate this Pt with addition dimensional values and return as a new Pt</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a list of numbers, an array of number, or an object with {x,y,z,w} properties</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="_cross" class="tsd-anchor"></a>
+					<h3>$cross</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">$cross<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_cross">$cross</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L287">Pt.ts:287</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>3D Cross product of this Pt and another Pt. Return results as a new Pt.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a list of numbers, an array of number, or an object with {x,y,z,w} properties</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="_divide" class="tsd-anchor"></a>
+					<h3>$divide</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">$divide<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_divide">$divide</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L238">Pt.ts:238</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Like <code>divide</code>, but returns result as a new Pt</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="_floor" class="tsd-anchor"></a>
+					<h3>$floor</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">$floor<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_floor">$floor</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L338">Pt.ts:338</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get a new Pt with floor values of this Pt</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="_max" class="tsd-anchor"></a>
+					<h3>$max</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">$max<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_max">$max</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L413">Pt.ts:413</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get a new Pt that has the maximum dimensional values of this Pt and another Pt</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a list of numbers, an array of number, or an object with {x,y,z,w} properties</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="_min" class="tsd-anchor"></a>
+					<h3>$min</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">$min<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_min">$min</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L399">Pt.ts:399</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get a new Pt that has the minimum dimensional values of this Pt and another Pt</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a list of numbers, an array of number, or an object with {x,y,z,w} properties</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="_multiply" class="tsd-anchor"></a>
+					<h3>$multiply</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">$multiply<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_multiply">$multiply</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L222">Pt.ts:222</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Like <code>multiply</code>, but returns result as a new Pt</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="_project" class="tsd-anchor"></a>
+					<h3>$project</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">$project<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_project">$project</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L295">Pt.ts:295</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Calculate vector projection of this Pt on another Pt.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+							<p>the projection vector as a Pt</p>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="_round" class="tsd-anchor"></a>
+					<h3>$round</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">$round<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_round">$round</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L372">Pt.ts:372</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get a new Pt with round values of this Pt</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="_subtract" class="tsd-anchor"></a>
+					<h3>$subtract</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">$subtract<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_subtract">$subtract</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L206">Pt.ts:206</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Like <code>subtract</code>, but returns result as a new Pt</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="_take" class="tsd-anchor"></a>
+					<h3>$take</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">$take<span class="tsd-signature-symbol">(</span>axis<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_take">$take</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L159">Pt.ts:159</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Take specific dimensional values from this Pt and create a new Pt</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>axis: <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a string such as &quot;xy&quot; (use Const.xy) or an array to specify index for two dimensions</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="_to" class="tsd-anchor"></a>
+					<h3>$to</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">$to<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_to">$to</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L108">Pt.ts:108</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Like <code>to()</code> but returns a new Pt</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a list of numbers, an array of number, or an object with {x,y,z,w} properties</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="_unit" class="tsd-anchor"></a>
+					<h3>$unit</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">$unit<span class="tsd-signature-symbol">(</span>magnitude<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#_unit">$unit</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L266">Pt.ts:266</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get a unit vector from this Pt</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> magnitude: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;undefined</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="abs" class="tsd-anchor"></a>
+					<h3>abs</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">abs<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#abs">abs</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L312">Pt.ts:312</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Absolute values for all values in this pt</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="add" class="tsd-anchor"></a>
+					<h3>add</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">add<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#add">add</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L181">Pt.ts:181</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Add scalar or vector values to this Pt</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a list of numbers, an array of number, or an object with {x,y,z,w} properties</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class">
+					<a name="addforce" class="tsd-anchor"></a>
+					<h3>add<wbr>Force</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon">add<wbr>Force<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L359">Physics.ts:359</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Add to the accumulated force</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a list of numeric parameters, an array of numbers, or an object with {x,y,z,w} properties</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="angle" class="tsd-anchor"></a>
+					<h3>angle</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">angle<span class="tsd-signature-symbol">(</span>axis<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#angle">angle</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L427">Pt.ts:427</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get angle of this vector from origin</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> axis: <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol"> =&nbsp;Const.xy</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a string such as &quot;xy&quot; (use Const.xy) or an array to specify index for two dimensions</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="anglebetween" class="tsd-anchor"></a>
+					<h3>angle<wbr>Between</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">angle<wbr>Between<span class="tsd-signature-symbol">(</span>p<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a>, axis<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#anglebetween">angleBetween</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L437">Pt.ts:437</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get the angle between this and another Pt</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>p: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>the other Pt</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> axis: <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol"> =&nbsp;Const.xy</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a string such as &quot;xy&quot; (use Const.xy) or an array to specify index for two dimensions</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="ceil" class="tsd-anchor"></a>
+					<h3>ceil</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">ceil<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#ceil">ceil</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L346">Pt.ts:346</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Ceil values for all values in this pt</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="clone" class="tsd-anchor"></a>
+					<h3>clone</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">clone<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#clone">clone</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L73">Pt.ts:73</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Clone this Pt</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class">
+					<a name="collide" class="tsd-anchor"></a>
+					<h3>collide</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon">collide<span class="tsd-signature-symbol">(</span>p2<span class="tsd-signature-symbol">: </span><a href="_physics_.particle.html" class="tsd-signature-type">Particle</a>, damp<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L409">Physics.ts:409</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Check and respoond to collisions between two particles</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>p2: <a href="_physics_.particle.html" class="tsd-signature-type">Particle</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>another particle</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> damp: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;1</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>damping value between 0 to 1, where 1 means no damping.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="cross2d" class="tsd-anchor"></a>
+					<h3>cross2D</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">cross2D<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#cross2d">cross2D</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L280">Pt.ts:280</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>2D Cross product of this Pt and another Pt. Return results as a new Pt.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a list of numbers, an array of number, or an object with {x,y,z,w} properties</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="divide" class="tsd-anchor"></a>
+					<h3>divide</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">divide<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#divide">divide</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L229">Pt.ts:229</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Divide this Pt over scalar or vector values (as element-wise)</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a list of numbers, an array of number, or an object with {x,y,z,w} properties</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="dot" class="tsd-anchor"></a>
+					<h3>dot</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">dot<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#dot">dot</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L273">Pt.ts:273</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Dot product of this Pt and another Pt</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a list of numbers, an array of number, or an object with {x,y,z,w} properties</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="equals" class="tsd-anchor"></a>
+					<h3>equals</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">equals<span class="tsd-signature-symbol">(</span>p<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a>, threshold<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#equals">equals</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L83">Pt.ts:83</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Check if another Pt is equal to this Pt, within a threshold</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>p: <a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>another Pt to compare with</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> threshold: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0.000001</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a threshold value within which the two Pts are considered equal. Default is 0.000001.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="floor" class="tsd-anchor"></a>
+					<h3>floor</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">floor<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#floor">floor</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L329">Pt.ts:329</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Floor values for all values in this pt</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class">
+					<a name="hit" class="tsd-anchor"></a>
+					<h3>hit</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon">hit<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L398">Physics.ts:398</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Hit this particle with an impulse</p>
+								</div>
+								<dl class="tsd-comment-tags">
+									<dt>example</dt>
+									<dd><p><code>hit(10, 20)</code>, <code>hit( new Pt(5, 9) )</code></p>
+									</dd>
+								</dl>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a list of numeric parameters, an array of numbers, or an object with {x,y,z,w} properties</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="magnitude" class="tsd-anchor"></a>
+					<h3>magnitude</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">magnitude<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#magnitude">magnitude</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L250">Pt.ts:250</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get the distance (magnitude) of this Pt from origin</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="magnitudesq" class="tsd-anchor"></a>
+					<h3>magnitude<wbr>Sq</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">magnitude<wbr>Sq<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#magnitudesq">magnitudeSq</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L244">Pt.ts:244</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get the sqaured distance (magnitude) of this Pt from origin</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="maxvalue" class="tsd-anchor"></a>
+					<h3>max<wbr>Value</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">max<wbr>Value<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">object</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#maxvalue">maxValue</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L390">Pt.ts:390</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Find the maximum value across all dimensions in this Pt</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">object</span></h4>
+							<p>an object with <code>value</code> and <code>index</code> which returns the maximum value and its dimensional index</p>
+							<ul class="tsd-parameters">
+								<li class="tsd-parameter">
+									<h5>index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></h5>
+								</li>
+								<li class="tsd-parameter">
+									<h5>value<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></h5>
+								</li>
+							</ul>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="minvalue" class="tsd-anchor"></a>
+					<h3>min<wbr>Value</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">min<wbr>Value<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">object</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#minvalue">minValue</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L381">Pt.ts:381</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Find the minimum value across all dimensions in this Pt</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">object</span></h4>
+							<p>an object with <code>value</code> and <code>index</code> which returns the minimum value and its dimensional index</p>
+							<ul class="tsd-parameters">
+								<li class="tsd-parameter">
+									<h5>index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></h5>
+								</li>
+								<li class="tsd-parameter">
+									<h5>value<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></h5>
+								</li>
+							</ul>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="multiply" class="tsd-anchor"></a>
+					<h3>multiply</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">multiply<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#multiply">multiply</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L213">Pt.ts:213</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Multiply scalar or vector values (as element-wise) with this Pt.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a list of numbers, an array of number, or an object with {x,y,z,w} properties</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="op" class="tsd-anchor"></a>
+					<h3>op</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">op<span class="tsd-signature-symbol">(</span>fn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#op">op</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L132">Pt.ts:132</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Create an operation using this Pt, passing this Pt into a custom function&#39;s first parameter. See the <a href="../../guide/Op-0400.html">Op guide</a> for details.
+									For example: <code>let myOp = pt.op( fn ); let result = myOp( [1,2,3] );</code></p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>fn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>any function that takes a Pt as its first parameter</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>p1<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a>, <span class="tsd-signature-symbol">...</span>rest<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>p1: <a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a></h5>
+														</li>
+														<li>
+															<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>rest: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">any</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">function</span></h4>
+							<p>a resulting function that takes other parameters required in <code>fn</code></p>
+							<ul class="tsd-parameters">
+								<li class="tsd-parameter-siganture">
+									<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+										<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>rest<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span></li>
+									</ul>
+									<ul class="tsd-descriptions">
+										<li class="tsd-description">
+											<h4 class="tsd-parameters-title">Parameters</h4>
+											<ul class="tsd-parameters">
+												<li>
+													<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>rest: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+												</li>
+											</ul>
+											<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">any</span></h4>
+										</li>
+									</ul>
+								</li>
+							</ul>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="ops" class="tsd-anchor"></a>
+					<h3>ops</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">ops<span class="tsd-signature-symbol">(</span>fns<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">[]</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#ops">ops</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L146">Pt.ts:146</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>This combines a series of operations into an array. See <code>op()</code> for details.
+									For example: <code>let myOps = pt.ops([fn1, fn2, fn3]); let results = myOps.map( (op) =&gt; op([1,2,3]) );</code></p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>fns: <span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>an array of functions for <code>op</code></p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">[]</span></h4>
+							<p>an array of resulting functions</p>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="projectscalar" class="tsd-anchor"></a>
+					<h3>project<wbr>Scalar</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">project<wbr>Scalar<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#projectscalar">projectScalar</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L304">Pt.ts:304</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Calculate scalar projection</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="reflect2d" class="tsd-anchor"></a>
+					<h3>reflect2D</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">reflect2D<span class="tsd-signature-symbol">(</span>line<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a>, axis<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#reflect2d">reflect2D</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L482">Pt.ts:482</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Reflect this Pt along a 2D line</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>line: <a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a Group of 2 Pts that defines a line for reflection</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> axis: <span class="tsd-signature-type">string</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>optional axis such as &quot;yz&quot; to define a 2D plane of reflection</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="rotate2d" class="tsd-anchor"></a>
+					<h3>rotate2D</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">rotate2D<span class="tsd-signature-symbol">(</span>angle<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, anchor<span class="tsd-signature-symbol">?: </span><a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a>, axis<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#rotate2d">rotate2D</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L459">Pt.ts:459</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Rotate this Pt from origin or from an anchor point in 2D</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>angle: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>rotate angle</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> anchor: <a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>optional anchor point to scale from</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> axis: <span class="tsd-signature-type">string</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>optional string such as &quot;yz&quot; to specify a 2D plane</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="round" class="tsd-anchor"></a>
+					<h3>round</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">round<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#round">round</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L363">Pt.ts:363</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Round values for all values in this pt</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="scale" class="tsd-anchor"></a>
+					<h3>scale</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">scale<span class="tsd-signature-symbol">(</span>scale<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol"> | </span><a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a>, anchor<span class="tsd-signature-symbol">?: </span><a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#scale">scale</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L447">Pt.ts:447</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Scale this Pt from origin or from an anchor point</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>scale: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol"> | </span><a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>scale ratio</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> anchor: <a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>optional anchor point to scale from</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="shear2d" class="tsd-anchor"></a>
+					<h3>shear2D</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">shear2D<span class="tsd-signature-symbol">(</span>scale<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol"> | </span><a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a>, anchor<span class="tsd-signature-symbol">?: </span><a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a>, axis<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#shear2d">shear2D</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L471">Pt.ts:471</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Shear this Pt from origin or from an anchor point in 2D</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>scale: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol"> | </span><a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a></h5>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> anchor: <a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>optional anchor point to scale from</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> axis: <span class="tsd-signature-type">string</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>optional string such as &quot;yz&quot; to specify a 2D plane</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class">
+					<a name="size" class="tsd-anchor"></a>
+					<h3>size</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon">size<span class="tsd-signature-symbol">(</span>r<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L348">Physics.ts:348</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Set the size of this particle. This sets both the radius and the mass.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>r: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p><code>radius</code> value, and also set <code>mass</code> to the same value.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="subtract" class="tsd-anchor"></a>
+					<h3>subtract</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">subtract<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#subtract">subtract</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L197">Pt.ts:197</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Subtract scalar or vector values from this Pt</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a list of numbers, an array of number, or an object with {x,y,z,w} properties</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="to" class="tsd-anchor"></a>
+					<h3>to</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">to<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#to">to</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L95">Pt.ts:95</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Update the values of this Pt</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a list of numbers, an array of number, or an object with {x,y,z,w} properties</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="toangle" class="tsd-anchor"></a>
+					<h3>to<wbr>Angle</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">to<wbr>Angle<span class="tsd-signature-symbol">(</span>radian<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, magnitude<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span>, anchorFromPt<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#toangle">toAngle</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L119">Pt.ts:119</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Update the values of this Pt to point at a specific angle</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>radian: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>target angle in radian</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> magnitude: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>Optional magnitude if known. If not provided, it&#39;ll calculate and use this Pt&#39;s magnitude.</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> anchorFromPt: <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;false</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>If <code>true</code>, translate to new position from current position. Default is <code>false</code> which update the position from origin (0,0);</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="toarray" class="tsd-anchor"></a>
+					<h3>to<wbr>Array</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">to<wbr>Array<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">[]</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#toarray">toArray</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L499">Pt.ts:499</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Convert this Pt to a javascript Array</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">[]</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-overwrite">
+					<a name="tostring" class="tsd-anchor"></a>
+					<h3>to<wbr>String</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-overwrite">
+						<li class="tsd-signature tsd-kind-icon">to<wbr>String<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Overrides <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#tostring">toString</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L448">Physics.ts:448</a></li>
+								</ul>
+							</aside>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+					<a name="unit" class="tsd-anchor"></a>
+					<h3>unit</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
+						<li class="tsd-signature tsd-kind-icon">unit<span class="tsd-signature-symbol">(</span>magnitude<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#unit">unit</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L257">Pt.ts:257</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Convert to a unit vector, which is a normalized vector whose magnitude equals 1.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> magnitude: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;undefined</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>Optional: if the magnitude is known, pass it as a parameter to avoid duplicate calculation.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class">
+					<a name="verlet" class="tsd-anchor"></a>
+					<h3>verlet</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon">verlet<span class="tsd-signature-symbol">(</span>dt<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, friction<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, lastDt<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L371">Physics.ts:371</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Verlet integration</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>dt: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>change in time</p>
+									</div>
+								</li>
+								<li>
+									<h5>friction: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>friction from 0 to 1, where 1 means no friction</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> lastDt: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>optional last change in time</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="copywithin" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> copy<wbr>Within</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">copy<wbr>Within<span class="tsd-signature-symbol">(</span>target<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, start<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, end<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.copyWithin</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3590</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Returns the this object after copying a section of the array identified by start and end
+									to the same array starting at position target</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>target: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>If target is negative, it is treated as length+target where length is the
+										length of the array.</p>
+									</div>
+								</li>
+								<li>
+									<h5>start: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>If start is negative, it is treated as length+start. If end is negative, it
+										is treated as length+end.</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> end: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>If not specified, length of the this object is used as its default value.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+					<a name="every" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> every</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">every<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+						<li class="tsd-signature tsd-kind-icon">every<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+						<li class="tsd-signature tsd-kind-icon">every&lt;Z&gt;<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.every</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3600</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Determines whether all the members of an array satisfy the specified test.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>A function that accepts up to three arguments. The every method calls
+											the callbackfn function for each element in array1 until the callbackfn returns false,
+										or until the end of the array.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <span class="tsd-signature-type">Float32Array</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.every</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3601</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <span class="tsd-signature-type">Float32Array</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">undefined</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.every</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3602</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>Z</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span>, value<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">Z</span></h5>
+														</li>
+														<li>
+															<h5>value: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <span class="tsd-signature-type">Float32Array</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">Z</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="fill" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> fill</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">fill<span class="tsd-signature-symbol">(</span>value<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, start<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span>, end<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.fill</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3612</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Returns the this object after filling the section identified by start and end with value</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>value: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>value to fill array section with</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> start: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>index to start filling the array at. If start is negative, it is treated as
+										length+start where length is the length of the array.</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> end: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>index to stop filling the array at. If end is negative, it is treated as
+										length+end.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+					<a name="filter" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> filter</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">filter<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span></li>
+						<li class="tsd-signature tsd-kind-icon">filter<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span></li>
+						<li class="tsd-signature tsd-kind-icon">filter&lt;Z&gt;<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.filter</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3621</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Returns the elements of an array that meet the condition specified in a callback function.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>A function that accepts up to three arguments. The filter method calls
+										the callbackfn function one time for each element in the array.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <span class="tsd-signature-type">Float32Array</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">any</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">Float32Array</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.filter</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3622</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <span class="tsd-signature-type">Float32Array</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">any</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">undefined</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">Float32Array</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.filter</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3623</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>Z</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span>, value<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">Z</span></h5>
+														</li>
+														<li>
+															<h5>value: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <span class="tsd-signature-type">Float32Array</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">any</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">Z</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">Float32Array</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+					<a name="find" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> find</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">find<span class="tsd-signature-symbol">(</span>predicate<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">undefined</span></li>
+						<li class="tsd-signature tsd-kind-icon">find<span class="tsd-signature-symbol">(</span>predicate<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">undefined</span></li>
+						<li class="tsd-signature tsd-kind-icon">find&lt;Z&gt;<span class="tsd-signature-symbol">(</span>predicate<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">undefined</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.find</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3634</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Returns the value of the first element in the array where predicate is true, and undefined
+									otherwise.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>predicate: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>find calls predicate once for each element of the array, in ascending
+											order, until it finds one where predicate returns true. If such an element is found, find
+										immediately returns that element value. Otherwise, find returns undefined.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, obj<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Array</span><span class="tsd-signature-symbol">&lt;</span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">&gt;</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>obj: <span class="tsd-signature-type">Array</span><span class="tsd-signature-symbol">&lt;</span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">&gt;</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span>
+								<span class="tsd-signature-symbol"> | </span>
+								<span class="tsd-signature-type">undefined</span>
+							</h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.find</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3635</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>predicate: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, obj<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Array</span><span class="tsd-signature-symbol">&lt;</span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">&gt;</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>obj: <span class="tsd-signature-type">Array</span><span class="tsd-signature-symbol">&lt;</span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">&gt;</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">undefined</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span>
+								<span class="tsd-signature-symbol"> | </span>
+								<span class="tsd-signature-type">undefined</span>
+							</h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.find</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3636</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>Z</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>predicate: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span>, value<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, obj<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Array</span><span class="tsd-signature-symbol">&lt;</span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">&gt;</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">Z</span></h5>
+														</li>
+														<li>
+															<h5>value: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>obj: <span class="tsd-signature-type">Array</span><span class="tsd-signature-symbol">&lt;</span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">&gt;</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">Z</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span>
+								<span class="tsd-signature-symbol"> | </span>
+								<span class="tsd-signature-type">undefined</span>
+							</h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+					<a name="findindex" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> find<wbr>Index</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">find<wbr>Index<span class="tsd-signature-symbol">(</span>predicate<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+						<li class="tsd-signature tsd-kind-icon">find<wbr>Index<span class="tsd-signature-symbol">(</span>predicate<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+						<li class="tsd-signature tsd-kind-icon">find<wbr>Index&lt;Z&gt;<span class="tsd-signature-symbol">(</span>predicate<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.findIndex</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3647</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Returns the index of the first element in the array where predicate is true, and -1
+									otherwise.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>predicate: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>find calls predicate once for each element of the array, in ascending
+											order, until it finds one where predicate returns true. If such an element is found,
+										findIndex immediately returns that element index. Otherwise, findIndex returns -1.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, obj<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Array</span><span class="tsd-signature-symbol">&lt;</span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">&gt;</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>obj: <span class="tsd-signature-type">Array</span><span class="tsd-signature-symbol">&lt;</span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">&gt;</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.findIndex</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3648</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>predicate: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, obj<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Array</span><span class="tsd-signature-symbol">&lt;</span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">&gt;</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>obj: <span class="tsd-signature-type">Array</span><span class="tsd-signature-symbol">&lt;</span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">&gt;</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">undefined</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.findIndex</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3649</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>Z</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>predicate: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span>, value<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, obj<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Array</span><span class="tsd-signature-symbol">&lt;</span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">&gt;</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">Z</span></h5>
+														</li>
+														<li>
+															<h5>value: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>obj: <span class="tsd-signature-type">Array</span><span class="tsd-signature-symbol">&lt;</span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">&gt;</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">Z</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+					<a name="foreach" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> for<wbr>Each</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">for<wbr>Each<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+						<li class="tsd-signature tsd-kind-icon">for<wbr>Each<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+						<li class="tsd-signature tsd-kind-icon">for<wbr>Each&lt;Z&gt;<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.forEach</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3658</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Performs the specified action for each element in an array.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>A function that accepts up to three arguments. forEach calls the
+										callbackfn function one time for each element in the array.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <span class="tsd-signature-type">Float32Array</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.forEach</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3659</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <span class="tsd-signature-type">Float32Array</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">undefined</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.forEach</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3660</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>Z</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span>, value<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">Z</span></h5>
+														</li>
+														<li>
+															<h5>value: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <span class="tsd-signature-type">Float32Array</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">Z</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="indexof" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> index<wbr>Of</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">index<wbr>Of<span class="tsd-signature-symbol">(</span>searchElement<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, fromIndex<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.indexOf</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3668</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Returns the index of the first occurrence of a value in an array.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>searchElement: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>The value to locate in the array.</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> fromIndex: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>The array index at which to begin the search. If fromIndex is omitted, the
+										search starts at index 0.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="join" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> join</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">join<span class="tsd-signature-symbol">(</span>separator<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.join</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3675</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Adds all the elements of an array separated by the specified separator string.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> separator: <span class="tsd-signature-type">string</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>A string used to separate one element of an array from the next in the
+										resulting String. If omitted, the array elements are separated with a comma.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="lastindexof" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> last<wbr>Index<wbr>Of</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">last<wbr>Index<wbr>Of<span class="tsd-signature-symbol">(</span>searchElement<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, fromIndex<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.lastIndexOf</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3683</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Returns the index of the last occurrence of a value in an array.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>searchElement: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>The value to locate in the array.</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> fromIndex: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>The array index at which to begin the search. If fromIndex is omitted, the
+										search starts at index 0.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="make" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> make</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">make<span class="tsd-signature-symbol">(</span>dimensions<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, defaultValue<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span>, randomize<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from <a href="_pt_.pt.html">Pt</a>.<a href="_pt_.pt.html#make">make</a></p>
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L45">Pt.ts:45</a></li>
+								</ul>
+							</aside>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>dimensions: <span class="tsd-signature-type">number</span></h5>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> defaultValue: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></h5>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> randomize: <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;false</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+					<a name="map" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> map</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">map<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span></li>
+						<li class="tsd-signature tsd-kind-icon">map<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span></li>
+						<li class="tsd-signature tsd-kind-icon">map&lt;Z&gt;<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.map</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3698</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Calls a defined callback function on each element of an array, and returns an array that
+									contains the results.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>A function that accepts up to three arguments. The map method calls the
+										callbackfn function one time for each element in the array.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <span class="tsd-signature-type">Float32Array</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">Float32Array</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.map</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3699</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <span class="tsd-signature-type">Float32Array</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">undefined</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">Float32Array</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.map</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3700</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>Z</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span>, value<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">Z</span></h5>
+														</li>
+														<li>
+															<h5>value: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <span class="tsd-signature-type">Float32Array</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">Z</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">Float32Array</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+					<a name="reduce" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> reduce</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">reduce<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, initialValue<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+						<li class="tsd-signature tsd-kind-icon">reduce&lt;U&gt;<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, initialValue<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.reduce</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3712</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Calls the specified callback function for all the elements in an array. The return value of
+										the callback function is the accumulated result, and is provided as an argument in the next
+									call to the callback function.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>A function that accepts up to four arguments. The reduce method calls the
+										callbackfn function one time for each element in the array.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>previousValue<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, currentValue<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, currentIndex<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>previousValue: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>currentValue: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>currentIndex: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <span class="tsd-signature-type">Float32Array</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> initialValue: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>If initialValue is specified, it is used as the initial value to start
+											the accumulation. The first call to the callbackfn function provides this value as an argument
+										instead of an array value.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.reduce</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3724</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Calls the specified callback function for all the elements in an array. The return value of
+										the callback function is the accumulated result, and is provided as an argument in the next
+									call to the callback function.</p>
+								</div>
+							</div>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>U</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>A function that accepts up to four arguments. The reduce method calls the
+										callbackfn function one time for each element in the array.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>previousValue<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span>, currentValue<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, currentIndex<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>previousValue: <span class="tsd-signature-type">U</span></h5>
+														</li>
+														<li>
+															<h5>currentValue: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>currentIndex: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <span class="tsd-signature-type">Float32Array</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">U</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>initialValue: <span class="tsd-signature-type">U</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>If initialValue is specified, it is used as the initial value to start
+											the accumulation. The first call to the callbackfn function provides this value as an argument
+										instead of an array value.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">U</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+					<a name="reduceright" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> reduce<wbr>Right</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">reduce<wbr>Right<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, initialValue<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+						<li class="tsd-signature tsd-kind-icon">reduce<wbr>Right&lt;U&gt;<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, initialValue<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.reduceRight</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3736</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Calls the specified callback function for all the elements in an array, in descending order.
+										The return value of the callback function is the accumulated result, and is provided as an
+									argument in the next call to the callback function.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>A function that accepts up to four arguments. The reduceRight method calls
+										the callbackfn function one time for each element in the array.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>previousValue<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, currentValue<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, currentIndex<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>previousValue: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>currentValue: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>currentIndex: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <span class="tsd-signature-type">Float32Array</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> initialValue: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>If initialValue is specified, it is used as the initial value to start
+											the accumulation. The first call to the callbackfn function provides this value as an
+										argument instead of an array value.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.reduceRight</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3748</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Calls the specified callback function for all the elements in an array, in descending order.
+										The return value of the callback function is the accumulated result, and is provided as an
+									argument in the next call to the callback function.</p>
+								</div>
+							</div>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>U</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>A function that accepts up to four arguments. The reduceRight method calls
+										the callbackfn function one time for each element in the array.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>previousValue<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span>, currentValue<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, currentIndex<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">U</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>previousValue: <span class="tsd-signature-type">U</span></h5>
+														</li>
+														<li>
+															<h5>currentValue: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>currentIndex: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <span class="tsd-signature-type">Float32Array</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">U</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>initialValue: <span class="tsd-signature-type">U</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>If initialValue is specified, it is used as the initial value to start
+											the accumulation. The first call to the callbackfn function provides this value as an argument
+										instead of an array value.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">U</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="reverse" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> reverse</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">reverse<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.reverse</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3753</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Reverses the elements in an Array.</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">Float32Array</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="set" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> set</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">set<span class="tsd-signature-symbol">(</span>array<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">ArrayLike</span><span class="tsd-signature-symbol">&lt;</span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">&gt;</span>, offset<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.set</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3760</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Sets a value or an array of values.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>array: <span class="tsd-signature-type">ArrayLike</span><span class="tsd-signature-symbol">&lt;</span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">&gt;</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>A typed or untyped array of values to set.</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> offset: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>The index in the current array at which the values are to be written.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="slice" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> slice</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">slice<span class="tsd-signature-symbol">(</span>start<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span>, end<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.slice</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3767</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Returns a section of an array.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> start: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>The beginning of the specified portion of the array.</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> end: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>The end of the specified portion of the array.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">Float32Array</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+					<a name="some" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> some</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-has-type-parameter tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">some<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+						<li class="tsd-signature tsd-kind-icon">some<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+						<li class="tsd-signature tsd-kind-icon">some&lt;Z&gt;<span class="tsd-signature-symbol">(</span>callbackfn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span>, thisArg<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.some</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3777</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Determines whether the specified callback function returns true for any element of an array.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>A function that accepts up to three arguments. The some method calls the
+											callbackfn function for each element in array1 until the callbackfn returns true, or until
+										the end of the array.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <span class="tsd-signature-type">Float32Array</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.some</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3778</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span>, value<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">void</span></h5>
+														</li>
+														<li>
+															<h5>value: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <span class="tsd-signature-type">Float32Array</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">undefined</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.some</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3779</li>
+								</ul>
+							</aside>
+							<h4 class="tsd-type-parameters-title">Type parameters</h4>
+							<ul class="tsd-type-parameters">
+								<li>
+									<h4>Z</h4>
+								</li>
+							</ul>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>callbackfn: <span class="tsd-signature-type">function</span></h5>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>this<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Z</span>, value<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, array<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>this: <span class="tsd-signature-type">Z</span></h5>
+														</li>
+														<li>
+															<h5>value: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>index: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>array: <span class="tsd-signature-type">Float32Array</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+								<li>
+									<h5>thisArg: <span class="tsd-signature-type">Z</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="sort" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> sort</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">sort<span class="tsd-signature-symbol">(</span>compareFn<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.sort</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3786</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Sorts an array.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> compareFn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>The name of the function used to determine the order of the elements. If
+										omitted, the elements are sorted in ascending, ASCII character order.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>a<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, b<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>a: <span class="tsd-signature-type">number</span></h5>
+														</li>
+														<li>
+															<h5>b: <span class="tsd-signature-type">number</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="subarray" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> subarray</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">subarray<span class="tsd-signature-symbol">(</span>begin<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, end<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Float32Array</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.subarray</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3794</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Gets a new Float32Array view of the ArrayBuffer store for this array, referencing the elements
+									at begin, inclusive, up to end, exclusive.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>begin: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>The index of the beginning of the array.</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> end: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>The index of the end of the array.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">Float32Array</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="tolocalestring" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> to<wbr>Locale<wbr>String</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">to<wbr>Locale<wbr>String<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.toLocaleString</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3799</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Converts a number to a string by using the current locale.</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+					<a name="tostring-1" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> to<wbr>String</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">to<wbr>String<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<p>Inherited from Float32Array.toString</p>
+								<ul>
+									<li>Defined in /usr/local/lib/node_modules/typedoc/node_modules/typescript/lib/lib.es6.d.ts:3804</li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Returns a string representation of an array.</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4>
+						</li>
+					</ul>
+				</section>
+			</section>
+		</div>
+		<div class="col-4 col-menu menu-sticky-wrap menu-highlight">
+			<nav class="tsd-navigation primary">
+				<ul>
+					<li class="globals  ">
+						<a href="../index.html"><em>Globals</em></a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_bound_.html">"<wbr>Bound"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_canvas_.html">"<wbr>Canvas"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_color_.html">"<wbr>Color"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_create_.html">"<wbr>Create"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_dom_.html">"<wbr>Dom"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_form_.html">"<wbr>Form"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_linearalgebra_.html">"<wbr>Linear<wbr>Algebra"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_num_.html">"<wbr>Num"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_op_.html">"<wbr>Op"</a>
+					</li>
+					<li class="current tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_space_.html">"<wbr>Space"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_svg_.html">"<wbr>Svg"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_typography_.html">"<wbr>Typography"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_ui_.html">"UI"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_util_.html">"<wbr>Util"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
+				</ul>
+			</nav>
+			<nav class="tsd-navigation secondary menu-sticky">
+				<ul class="before-current">
+					<li class=" tsd-kind-class tsd-parent-kind-external-module">
+						<a href="_physics_.body.html" class="tsd-kind-icon">Body</a>
+					</li>
+				</ul>
+				<ul class="current">
+					<li class="current tsd-kind-class tsd-parent-kind-external-module">
+						<a href="_physics_.particle.html" class="tsd-kind-icon">Particle</a>
+						<ul>
+							<li class=" tsd-kind-constructor tsd-parent-kind-class tsd-is-overwrite">
+								<a href="_physics_.particle.html#constructor" class="tsd-kind-icon">constructor</a>
+							</li>
+							<li class=" tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+								<a href="_physics_.particle.html#_body" class="tsd-kind-icon">_body</a>
+							</li>
+							<li class=" tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+								<a href="_physics_.particle.html#_force" class="tsd-kind-icon">_force</a>
+							</li>
+							<li class=" tsd-kind-property tsd-parent-kind-class tsd-is-inherited tsd-is-protected">
+								<a href="_physics_.particle.html#_id" class="tsd-kind-icon">_id</a>
+							</li>
+							<li class=" tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+								<a href="_physics_.particle.html#_lock" class="tsd-kind-icon">_lock</a>
+							</li>
+							<li class=" tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+								<a href="_physics_.particle.html#_lockpt" class="tsd-kind-icon">_lock<wbr>Pt</a>
+							</li>
+							<li class=" tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+								<a href="_physics_.particle.html#_mass" class="tsd-kind-icon">_mass</a>
+							</li>
+							<li class=" tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+								<a href="_physics_.particle.html#_prev" class="tsd-kind-icon">_prev</a>
+							</li>
+							<li class=" tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+								<a href="_physics_.particle.html#_radius" class="tsd-kind-icon">_radius</a>
+							</li>
+							<li class=" tsd-kind-property tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+								<a href="_physics_.particle.html#bytes_per_element" class="tsd-kind-icon">BYTES_<wbr>PER_<wbr>ELEMENT</a>
+							</li>
+							<li class=" tsd-kind-property tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+								<a href="_physics_.particle.html#buffer" class="tsd-kind-icon">buffer</a>
+							</li>
+							<li class=" tsd-kind-property tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+								<a href="_physics_.particle.html#bytelength" class="tsd-kind-icon">byte<wbr>Length</a>
+							</li>
+							<li class=" tsd-kind-property tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+								<a href="_physics_.particle.html#byteoffset" class="tsd-kind-icon">byte<wbr>Offset</a>
+							</li>
+							<li class=" tsd-kind-property tsd-parent-kind-class tsd-is-inherited tsd-is-static">
+								<a href="_physics_.particle.html#length" class="tsd-kind-icon">length</a>
+							</li>
+							<li class=" tsd-kind-accessor tsd-parent-kind-class">
+								<a href="_physics_.particle.html#body" class="tsd-kind-icon">body</a>
+							</li>
+							<li class=" tsd-kind-get-signature tsd-parent-kind-class">
+								<a href="_physics_.particle.html#changed" class="tsd-kind-icon">changed</a>
+							</li>
+							<li class=" tsd-kind-accessor tsd-parent-kind-class">
+								<a href="_physics_.particle.html#force" class="tsd-kind-icon">force</a>
+							</li>
+							<li class=" tsd-kind-accessor tsd-parent-kind-class tsd-is-inherited">
+								<a href="_physics_.particle.html#id" class="tsd-kind-icon">id</a>
+							</li>
+							<li class=" tsd-kind-accessor tsd-parent-kind-class">
+								<a href="_physics_.particle.html#lock" class="tsd-kind-icon">lock</a>
+							</li>
+							<li class=" tsd-kind-accessor tsd-parent-kind-class">
+								<a href="_physics_.particle.html#mass" class="tsd-kind-icon">mass</a>
+							</li>
+							<li class=" tsd-kind-set-signature tsd-parent-kind-class">
+								<a href="_physics_.particle.html#position" class="tsd-kind-icon">position</a>
+							</li>
+							<li class=" tsd-kind-accessor tsd-parent-kind-class">
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+					<div class="field">
+						<label for="tsd-search-field" class="tsd-widget search no-caption">Search</label>
+						<input id="tsd-search-field" type="text" />
+					</div>
+					<ul class="results">
+						<li class="state loading">Preparing search index...</li>
+						<li class="state failure">The search index is not available</li>
+					</ul>
+					<a href="../index.html" class="title">Pts</a>
+				</div>
+				<div class="table-cell" id="tsd-widgets">
+					<div id="tsd-filter">
+						<a href="#" class="tsd-widget options no-caption" data-toggle="options">Options</a>
+						<div class="tsd-filter-group">
+							<div class="tsd-select" id="tsd-filter-visibility">
+								<span class="tsd-select-label">All</span>
+								<ul class="tsd-select-list">
+									<li data-value="public">Public</li>
+									<li data-value="protected">Public/Protected</li>
+									<li data-value="private" class="selected">All</li>
+								</ul>
+							</div>
+							<input type="checkbox" id="tsd-filter-inherited" checked />
+							<label class="tsd-widget" for="tsd-filter-inherited">Inherited</label>
+							<input type="checkbox" id="tsd-filter-externals" checked />
+							<label class="tsd-widget" for="tsd-filter-externals">Externals</label>
+							<input type="checkbox" id="tsd-filter-only-exported" />
+							<label class="tsd-widget" for="tsd-filter-only-exported">Only exported</label>
+						</div>
+					</div>
+					<a href="#" class="tsd-widget menu no-caption" data-toggle="menu">Menu</a>
+				</div>
+			</div>
+		</div>
+	</div>
+	<div class="tsd-page-title">
+		<div class="container">
+			<ul class="tsd-breadcrumb">
+				<li>
+					<a href="../index.html">Globals</a>
+				</li>
+				<li>
+					<a href="../modules/_physics_.html">&quot;Physics&quot;</a>
+				</li>
+				<li>
+					<a href="_physics_.world.html">World</a>
+				</li>
+			</ul>
+			<h1>Class World</h1>
+		</div>
+	</div>
+</header>
+<div class="container container-main">
+	<div class="row">
+		<div class="col-8 col-content">
+			<section class="tsd-panel tsd-comment">
+				<div class="tsd-comment tsd-typography">
+					<div class="lead">
+						<p>A <code>World</code> stores and manages <code>Body</code> and <code>Particle</code> for 2D physics simulation</p>
+					</div>
+				</div>
+			</section>
+			<section class="tsd-panel tsd-hierarchy">
+				<h3>Hierarchy</h3>
+				<ul class="tsd-hierarchy">
+					<li>
+						<span class="target">World</span>
+					</li>
+				</ul>
+			</section>
+			<section class="tsd-panel-group tsd-index-group">
+				<h2>Index</h2>
+				<section class="tsd-panel tsd-index-panel">
+					<div class="tsd-index-content">
+						<section class="tsd-index-section ">
+							<h3>Constructors</h3>
+							<ul class="tsd-index-list">
+								<li class="tsd-kind-constructor tsd-parent-kind-class"><a href="_physics_.world.html#constructor" class="tsd-kind-icon">constructor</a></li>
+							</ul>
+						</section>
+						<section class="tsd-index-section tsd-is-private-protected">
+							<h3>Properties</h3>
+							<ul class="tsd-index-list">
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-protected"><a href="_physics_.world.html#_bodies" class="tsd-kind-icon">_bodies</a></li>
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-protected"><a href="_physics_.world.html#_bound" class="tsd-kind-icon">_bound</a></li>
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-protected"><a href="_physics_.world.html#_damping" class="tsd-kind-icon">_damping</a></li>
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-protected"><a href="_physics_.world.html#_drawbodies" class="tsd-kind-icon">_draw<wbr>Bodies</a></li>
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-protected"><a href="_physics_.world.html#_drawparticles" class="tsd-kind-icon">_draw<wbr>Particles</a></li>
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-protected"><a href="_physics_.world.html#_friction" class="tsd-kind-icon">_friction</a></li>
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-protected"><a href="_physics_.world.html#_gravity" class="tsd-kind-icon">_gravity</a></li>
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-private"><a href="_physics_.world.html#_lasttime" class="tsd-kind-icon">_last<wbr>Time</a></li>
+								<li class="tsd-kind-property tsd-parent-kind-class tsd-is-protected"><a href="_physics_.world.html#_particles" class="tsd-kind-icon">_particles</a></li>
+							</ul>
+						</section>
+						<section class="tsd-index-section ">
+							<h3>Accessors</h3>
+							<ul class="tsd-index-list">
+								<li class="tsd-kind-get-signature tsd-parent-kind-class"><a href="_physics_.world.html#bodycount" class="tsd-kind-icon">body<wbr>Count</a></li>
+								<li class="tsd-kind-accessor tsd-parent-kind-class"><a href="_physics_.world.html#damping" class="tsd-kind-icon">damping</a></li>
+								<li class="tsd-kind-accessor tsd-parent-kind-class"><a href="_physics_.world.html#friction" class="tsd-kind-icon">friction</a></li>
+								<li class="tsd-kind-accessor tsd-parent-kind-class"><a href="_physics_.world.html#gravity" class="tsd-kind-icon">gravity</a></li>
+								<li class="tsd-kind-get-signature tsd-parent-kind-class"><a href="_physics_.world.html#particlecount" class="tsd-kind-icon">particle<wbr>Count</a></li>
+							</ul>
+						</section>
+						<section class="tsd-index-section ">
+							<h3>Methods</h3>
+							<ul class="tsd-index-list">
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-protected"><a href="_physics_.world.html#_updatebodies" class="tsd-kind-icon">_update<wbr>Bodies</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-protected"><a href="_physics_.world.html#_updateparticles" class="tsd-kind-icon">_update<wbr>Particles</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_physics_.world.html#add" class="tsd-kind-icon">add</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_physics_.world.html#body" class="tsd-kind-icon">body</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_physics_.world.html#drawbodies" class="tsd-kind-icon">draw<wbr>Bodies</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_physics_.world.html#drawparticles" class="tsd-kind-icon">draw<wbr>Particles</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-protected"><a href="_physics_.world.html#integrate" class="tsd-kind-icon">integrate</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_physics_.world.html#particle" class="tsd-kind-icon">particle</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_physics_.world.html#remove" class="tsd-kind-icon">remove</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_physics_.world.html#update" class="tsd-kind-icon">update</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_physics_.world.html#boundconstraint" class="tsd-kind-icon">bound<wbr>Constraint</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_physics_.world.html#edgeconstraint" class="tsd-kind-icon">edge<wbr>Constraint</a></li>
+							</ul>
+						</section>
+						<section class="tsd-index-section tsd-is-private-protected">
+							<h3>Object literals</h3>
+							<ul class="tsd-index-list">
+								<li class="tsd-kind-object-literal tsd-parent-kind-class tsd-is-protected"><a href="_physics_.world.html#_names" class="tsd-kind-icon">_names</a></li>
+							</ul>
+						</section>
+					</div>
+				</section>
+			</section>
+			<section class="tsd-panel-group tsd-member-group ">
+				<h2>Constructors</h2>
+				<section class="tsd-panel tsd-member tsd-kind-constructor tsd-parent-kind-class">
+					<a name="constructor" class="tsd-anchor"></a>
+					<h3>constructor</h3>
+					<ul class="tsd-signatures tsd-kind-constructor tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon">new <wbr>World<span class="tsd-signature-symbol">(</span>bound<span class="tsd-signature-symbol">: </span><a href="_pt_.group.html" class="tsd-signature-type">Group</a>, friction<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span>, gravity<span class="tsd-signature-symbol">?: </span><a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_physics_.world.html" class="tsd-signature-type">World</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L28">Physics.ts:28</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Create a <code>World</code> for 2D physics simulation</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>bound: <a href="_pt_.group.html" class="tsd-signature-type">Group</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<div class="lead">
+											<p>a rectangular bounding box defined by a Group</p>
+										</div>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> friction: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;1</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<div class="lead">
+											<p>a value between 0 to 1 where 1 means no friction. Default is 1</p>
+										</div>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> gravity: <a href="../modules/_pt_.html#ptlike" class="tsd-signature-type">PtLike</a><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<div class="lead">
+											<p>a number of a Pt to define gravitational force. Using a number is a shorthand to set <code>new Pt(0, n)</code>. Default is 0.</p>
+										</div>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_physics_.world.html" class="tsd-signature-type">World</a></h4>
+						</li>
+					</ul>
+				</section>
+			</section>
+			<section class="tsd-panel-group tsd-member-group tsd-is-private-protected">
+				<h2>Properties</h2>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+					<a name="_bodies" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagProtected">Protected</span> _bodies</h3>
+					<div class="tsd-signature tsd-kind-icon">_bodies<span class="tsd-signature-symbol">:</span> <a href="_physics_.body.html" class="tsd-signature-type">Body</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol"> =&nbsp;[]</span></div>
+					<aside class="tsd-sources">
+						<ul>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L23">Physics.ts:23</a></li>
+						</ul>
+					</aside>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+					<a name="_bound" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagProtected">Protected</span> _bound</h3>
+					<div class="tsd-signature tsd-kind-icon">_bound<span class="tsd-signature-symbol">:</span> <a href="_bound_.bound.html" class="tsd-signature-type">Bound</a></div>
+					<aside class="tsd-sources">
+						<ul>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L20">Physics.ts:20</a></li>
+						</ul>
+					</aside>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+					<a name="_damping" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagProtected">Protected</span> _damping</h3>
+					<div class="tsd-signature tsd-kind-icon">_damping<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0.75</span></div>
+					<aside class="tsd-sources">
+						<ul>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L19">Physics.ts:19</a></li>
+						</ul>
+					</aside>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+					<a name="_drawbodies" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagProtected">Protected</span> _draw<wbr>Bodies</h3>
+					<div class="tsd-signature tsd-kind-icon">_draw<wbr>Bodies<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">function</span></div>
+					<aside class="tsd-sources">
+						<ul>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L28">Physics.ts:28</a></li>
+						</ul>
+					</aside>
+					<div class="tsd-type-declaration">
+						<h4>Type declaration</h4>
+						<ul class="tsd-parameters">
+							<li class="tsd-parameter-siganture">
+								<ul class="tsd-signatures tsd-kind-type-literal tsd-parent-kind-property tsd-is-not-exported">
+									<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>p<span class="tsd-signature-symbol">: </span><a href="_physics_.body.html" class="tsd-signature-type">Body</a>, i<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+								</ul>
+								<ul class="tsd-descriptions">
+									<li class="tsd-description">
+										<h4 class="tsd-parameters-title">Parameters</h4>
+										<ul class="tsd-parameters">
+											<li>
+												<h5>p: <a href="_physics_.body.html" class="tsd-signature-type">Body</a></h5>
+											</li>
+											<li>
+												<h5>i: <span class="tsd-signature-type">number</span></h5>
+											</li>
+										</ul>
+										<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+									</li>
+								</ul>
+							</li>
+						</ul>
+					</div>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+					<a name="_drawparticles" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagProtected">Protected</span> _draw<wbr>Particles</h3>
+					<div class="tsd-signature tsd-kind-icon">_draw<wbr>Particles<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">function</span></div>
+					<aside class="tsd-sources">
+						<ul>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L27">Physics.ts:27</a></li>
+						</ul>
+					</aside>
+					<div class="tsd-type-declaration">
+						<h4>Type declaration</h4>
+						<ul class="tsd-parameters">
+							<li class="tsd-parameter-siganture">
+								<ul class="tsd-signatures tsd-kind-type-literal tsd-parent-kind-property tsd-is-not-exported">
+									<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>p<span class="tsd-signature-symbol">: </span><a href="_physics_.particle.html" class="tsd-signature-type">Particle</a>, i<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+								</ul>
+								<ul class="tsd-descriptions">
+									<li class="tsd-description">
+										<h4 class="tsd-parameters-title">Parameters</h4>
+										<ul class="tsd-parameters">
+											<li>
+												<h5>p: <a href="_physics_.particle.html" class="tsd-signature-type">Particle</a></h5>
+											</li>
+											<li>
+												<h5>i: <span class="tsd-signature-type">number</span></h5>
+											</li>
+										</ul>
+										<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+									</li>
+								</ul>
+							</li>
+						</ul>
+					</div>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+					<a name="_friction" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagProtected">Protected</span> _friction</h3>
+					<div class="tsd-signature tsd-kind-icon">_friction<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;1</span></div>
+					<aside class="tsd-sources">
+						<ul>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L18">Physics.ts:18</a></li>
+						</ul>
+					</aside>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+					<a name="_gravity" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagProtected">Protected</span> _gravity</h3>
+					<div class="tsd-signature tsd-kind-icon">_gravity<span class="tsd-signature-symbol">:</span> <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol"> =&nbsp;new Pt()</span></div>
+					<aside class="tsd-sources">
+						<ul>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L17">Physics.ts:17</a></li>
+						</ul>
+					</aside>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-private">
+					<a name="_lasttime" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagPrivate">Private</span> _last<wbr>Time</h3>
+					<div class="tsd-signature tsd-kind-icon">_last<wbr>Time<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;null</span></div>
+					<aside class="tsd-sources">
+						<ul>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L15">Physics.ts:15</a></li>
+						</ul>
+					</aside>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+					<a name="_particles" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagProtected">Protected</span> _particles</h3>
+					<div class="tsd-signature tsd-kind-icon">_particles<span class="tsd-signature-symbol">:</span> <a href="_physics_.particle.html" class="tsd-signature-type">Particle</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol"> =&nbsp;[]</span></div>
+					<aside class="tsd-sources">
+						<ul>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L22">Physics.ts:22</a></li>
+						</ul>
+					</aside>
+				</section>
+			</section>
+			<section class="tsd-panel-group tsd-member-group ">
+				<h2>Accessors</h2>
+				<section class="tsd-panel tsd-member tsd-kind-get-signature tsd-parent-kind-class">
+					<a name="bodycount" class="tsd-anchor"></a>
+					<h3>body<wbr>Count</h3>
+					<ul class="tsd-signatures tsd-kind-get-signature tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">get</span> bodyCount<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L57">Physics.ts:57</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get the number of bodies</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-accessor tsd-parent-kind-class">
+					<a name="damping" class="tsd-anchor"></a>
+					<h3>damping</h3>
+					<ul class="tsd-signatures tsd-kind-accessor tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">get</span> damping<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">set</span> damping<span class="tsd-signature-symbol">(</span>f<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L51">Physics.ts:51</a></li>
+								</ul>
+							</aside>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L52">Physics.ts:52</a></li>
+								</ul>
+							</aside>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>f: <span class="tsd-signature-type">number</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-accessor tsd-parent-kind-class">
+					<a name="friction" class="tsd-anchor"></a>
+					<h3>friction</h3>
+					<ul class="tsd-signatures tsd-kind-accessor tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">get</span> friction<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">set</span> friction<span class="tsd-signature-symbol">(</span>f<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L48">Physics.ts:48</a></li>
+								</ul>
+							</aside>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L49">Physics.ts:49</a></li>
+								</ul>
+							</aside>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>f: <span class="tsd-signature-type">number</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-accessor tsd-parent-kind-class">
+					<a name="gravity" class="tsd-anchor"></a>
+					<h3>gravity</h3>
+					<ul class="tsd-signatures tsd-kind-accessor tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">get</span> gravity<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">set</span> gravity<span class="tsd-signature-symbol">(</span>g<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L45">Physics.ts:45</a></li>
+								</ul>
+							</aside>
+							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+						</li>
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L46">Physics.ts:46</a></li>
+								</ul>
+							</aside>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>g: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-get-signature tsd-parent-kind-class">
+					<a name="particlecount" class="tsd-anchor"></a>
+					<h3>particle<wbr>Count</h3>
+					<ul class="tsd-signatures tsd-kind-get-signature tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">get</span> particleCount<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L62">Physics.ts:62</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get the number of particles</p>
+								</div>
+							</div>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+					</ul>
+				</section>
+			</section>
+			<section class="tsd-panel-group tsd-member-group ">
+				<h2>Methods</h2>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-protected">
+					<a name="_updatebodies" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagProtected">Protected</span> _update<wbr>Bodies</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-protected">
+						<li class="tsd-signature tsd-kind-icon">_update<wbr>Bodies<span class="tsd-signature-symbol">(</span>dt<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L239">Physics.ts:239</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Internal function to update bodies</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>dt: <span class="tsd-signature-type">number</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-protected">
+					<a name="_updateparticles" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagProtected">Protected</span> _update<wbr>Particles</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-protected">
+						<li class="tsd-signature tsd-kind-icon">_update<wbr>Particles<span class="tsd-signature-symbol">(</span>dt<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L209">Physics.ts:209</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Internal function to update particles</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>dt: <span class="tsd-signature-type">number</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class">
+					<a name="add" class="tsd-anchor"></a>
+					<h3>add</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon">add<span class="tsd-signature-symbol">(</span>p<span class="tsd-signature-symbol">: </span><a href="_physics_.particle.html" class="tsd-signature-type">Particle</a><span class="tsd-signature-symbol"> | </span><a href="_physics_.body.html" class="tsd-signature-type">Body</a>, name<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L115">Physics.ts:115</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Add a particle or body to this world.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>p: <a href="_physics_.particle.html" class="tsd-signature-type">Particle</a><span class="tsd-signature-symbol"> | </span><a href="_physics_.body.html" class="tsd-signature-type">Body</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p><code>Particle</code> or <code>Body</code> instance</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> name: <span class="tsd-signature-type">string</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>optional name, which can be referenced in <code>body()</code> or <code>particle()</code> function to retrieve this back.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class">
+					<a name="body" class="tsd-anchor"></a>
+					<h3>body</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon">body<span class="tsd-signature-symbol">(</span>id<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_physics_.body.html" class="tsd-signature-type">Body</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L70">Physics.ts:70</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get a body in this world by index or string id</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>id: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">string</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>numeric index of the body, or a string id that associates with it.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_physics_.body.html" class="tsd-signature-type">Body</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class">
+					<a name="drawbodies" class="tsd-anchor"></a>
+					<h3>draw<wbr>Bodies</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon">draw<wbr>Bodies<span class="tsd-signature-symbol">(</span>fn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L105">Physics.ts:105</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Draw bodies using the provided function</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>fn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a function that draws bodies passed in the parameters <code>(bodies, index)</code>.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>p<span class="tsd-signature-symbol">: </span><a href="_physics_.body.html" class="tsd-signature-type">Body</a>, i<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>p: <a href="_physics_.body.html" class="tsd-signature-type">Body</a></h5>
+														</li>
+														<li>
+															<h5>i: <span class="tsd-signature-type">number</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class">
+					<a name="drawparticles" class="tsd-anchor"></a>
+					<h3>draw<wbr>Particles</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon">draw<wbr>Particles<span class="tsd-signature-symbol">(</span>fn<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L96">Physics.ts:96</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Draw particles using the provided function</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>fn: <span class="tsd-signature-type">function</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>a function that draws particles passed in the parameters <code>(particles, index)</code>.</p>
+									</div>
+									<ul class="tsd-parameters">
+										<li class="tsd-parameter-siganture">
+											<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+												<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>p<span class="tsd-signature-symbol">: </span><a href="_physics_.particle.html" class="tsd-signature-type">Particle</a>, i<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+											</ul>
+											<ul class="tsd-descriptions">
+												<li class="tsd-description">
+													<h4 class="tsd-parameters-title">Parameters</h4>
+													<ul class="tsd-parameters">
+														<li>
+															<h5>p: <a href="_physics_.particle.html" class="tsd-signature-type">Particle</a></h5>
+														</li>
+														<li>
+															<h5>i: <span class="tsd-signature-type">number</span></h5>
+														</li>
+													</ul>
+													<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+												</li>
+											</ul>
+										</li>
+									</ul>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-protected">
+					<a name="integrate" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagProtected">Protected</span> integrate</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-protected">
+						<li class="tsd-signature tsd-kind-icon">integrate<span class="tsd-signature-symbol">(</span>p<span class="tsd-signature-symbol">: </span><a href="_physics_.particle.html" class="tsd-signature-type">Particle</a>, dt<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, prevDt<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_physics_.particle.html" class="tsd-signature-type">Particle</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L199">Physics.ts:199</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Internal integrate function</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>p: <a href="_physics_.particle.html" class="tsd-signature-type">Particle</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>particle</p>
+									</div>
+								</li>
+								<li>
+									<h5>dt: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>time changed</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagOptional">Optional</span> prevDt: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>previous change in time, optional</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_physics_.particle.html" class="tsd-signature-type">Particle</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class">
+					<a name="particle" class="tsd-anchor"></a>
+					<h3>particle</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon">particle<span class="tsd-signature-symbol">(</span>id<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_physics_.particle.html" class="tsd-signature-type">Particle</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L77">Physics.ts:77</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get a particle in this world by index or string id</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>id: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">string</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>numeric index of the particle, or a string id that associates with it.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_physics_.particle.html" class="tsd-signature-type">Particle</a></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class">
+					<a name="remove" class="tsd-anchor"></a>
+					<h3>remove</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon">remove<span class="tsd-signature-symbol">(</span>which<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">"body"</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">"particle"</span>, index<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, count<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L133">Physics.ts:133</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Remove either body or particle from this world. Support removing a range and negative index.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>which: <span class="tsd-signature-type">"body"</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">"particle"</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>Either &quot;body&quot; or &quot;particle&quot;</p>
+									</div>
+								</li>
+								<li>
+									<h5>index: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>Start index, which can be negative (where -1 is at index 0, -2 at index 1, etc)</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> count: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;1</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>Number of items to remove. Default is 1.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class">
+					<a name="update" class="tsd-anchor"></a>
+					<h3>update</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon">update<span class="tsd-signature-symbol">(</span>ms<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L85">Physics.ts:85</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Update this world one time step</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>ms: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>change in time in milliseconds</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-static">
+					<a name="boundconstraint" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> bound<wbr>Constraint</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">bound<wbr>Constraint<span class="tsd-signature-symbol">(</span>p<span class="tsd-signature-symbol">: </span><a href="_physics_.particle.html" class="tsd-signature-type">Particle</a>, rect<span class="tsd-signature-symbol">: </span><a href="_pt_.group.html" class="tsd-signature-type">Group</a>, damping<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L176">Physics.ts:176</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Static function to calculate bounding box constraints.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>p: <a href="_physics_.particle.html" class="tsd-signature-type">Particle</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>particle</p>
+									</div>
+								</li>
+								<li>
+									<h5>rect: <a href="_pt_.group.html" class="tsd-signature-type">Group</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>bounding box defined by a Group</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> damping: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0.75</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>damping between 0 to 1, where 1 means no damping. Default is 0.75.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-static">
+					<a name="edgeconstraint" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> edge<wbr>Constraint</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">edge<wbr>Constraint<span class="tsd-signature-symbol">(</span>p1<span class="tsd-signature-symbol">: </span><a href="_physics_.particle.html" class="tsd-signature-type">Particle</a>, p2<span class="tsd-signature-symbol">: </span><a href="_physics_.particle.html" class="tsd-signature-type">Particle</a>, dist<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, stiff<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span>, precise<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_physics_.particle.html" class="tsd-signature-type">Particle</a></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L153">Physics.ts:153</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Static function to calculate edge constraints between 2 particles.</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>p1: <a href="_physics_.particle.html" class="tsd-signature-type">Particle</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>particle 1</p>
+									</div>
+								</li>
+								<li>
+									<h5>p2: <a href="_physics_.particle.html" class="tsd-signature-type">Particle</a></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>particle 1</p>
+									</div>
+								</li>
+								<li>
+									<h5>dist: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>distance between particles</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> stiff: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;1</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>stiffness between 0 to 1.</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> precise: <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;false</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>use precise distance calculation. Default is <code>false</code>.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <a href="_physics_.particle.html" class="tsd-signature-type">Particle</a></h4>
+						</li>
+					</ul>
+				</section>
+			</section>
+			<section class="tsd-panel-group tsd-member-group tsd-is-private-protected">
+				<h2>Object literals</h2>
+				<section class="tsd-panel tsd-member tsd-kind-object-literal tsd-parent-kind-class tsd-is-protected">
+					<a name="_names" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagProtected">Protected</span> _names</h3>
+					<div class="tsd-signature tsd-kind-icon">_names<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">object</span></div>
+					<aside class="tsd-sources">
+						<ul>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L25">Physics.ts:25</a></li>
+						</ul>
+					</aside>
+					<section class="tsd-panel tsd-member tsd-kind-variable tsd-parent-kind-object-literal">
+						<a name="_names.b" class="tsd-anchor"></a>
+						<h3>b</h3>
+						<div class="tsd-signature tsd-kind-icon">b<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">object</span></div>
+						<aside class="tsd-sources">
+							<ul>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L25">Physics.ts:25</a></li>
+							</ul>
+						</aside>
+						<div class="tsd-type-declaration">
+							<h4>Type declaration</h4>
+							<ul class="tsd-parameters">
+							</ul>
+						</div>
+					</section>
+					<section class="tsd-panel tsd-member tsd-kind-variable tsd-parent-kind-object-literal">
+						<a name="_names.p" class="tsd-anchor"></a>
+						<h3>p</h3>
+						<div class="tsd-signature tsd-kind-icon">p<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">object</span></div>
+						<aside class="tsd-sources">
+							<ul>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Physics.ts#L25">Physics.ts:25</a></li>
+							</ul>
+						</aside>
+						<div class="tsd-type-declaration">
+							<h4>Type declaration</h4>
+							<ul class="tsd-parameters">
+							</ul>
+						</div>
+					</section>
+				</section>
+			</section>
+		</div>
+		<div class="col-4 col-menu menu-sticky-wrap menu-highlight">
+			<nav class="tsd-navigation primary">
+				<ul>
+					<li class="globals  ">
+						<a href="../index.html"><em>Globals</em></a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_bound_.html">"<wbr>Bound"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_canvas_.html">"<wbr>Canvas"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_color_.html">"<wbr>Color"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_create_.html">"<wbr>Create"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_dom_.html">"<wbr>Dom"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_form_.html">"<wbr>Form"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_linearalgebra_.html">"<wbr>Linear<wbr>Algebra"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_num_.html">"<wbr>Num"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_op_.html">"<wbr>Op"</a>
+					</li>
+					<li class="current tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_space_.html">"<wbr>Space"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_svg_.html">"<wbr>Svg"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_typography_.html">"<wbr>Typography"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_ui_.html">"UI"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_util_.html">"<wbr>Util"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
+				</ul>
+			</nav>
+			<nav class="tsd-navigation secondary menu-sticky">
+				<ul class="before-current">
+					<li class=" tsd-kind-class tsd-parent-kind-external-module">
+						<a href="_physics_.body.html" class="tsd-kind-icon">Body</a>
+					</li>
+					<li class=" tsd-kind-class tsd-parent-kind-external-module">
+						<a href="_physics_.particle.html" class="tsd-kind-icon">Particle</a>
+					</li>
+				</ul>
+				<ul class="current">
+					<li class="current tsd-kind-class tsd-parent-kind-external-module">
+						<a href="_physics_.world.html" class="tsd-kind-icon">World</a>
+						<ul>
+							<li class=" tsd-kind-constructor tsd-parent-kind-class">
+								<a href="_physics_.world.html#constructor" class="tsd-kind-icon">constructor</a>
+							</li>
+							<li class=" tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+								<a href="_physics_.world.html#_bodies" class="tsd-kind-icon">_bodies</a>
+							</li>
+							<li class=" tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+								<a href="_physics_.world.html#_bound" class="tsd-kind-icon">_bound</a>
+							</li>
+							<li class=" tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+								<a href="_physics_.world.html#_damping" class="tsd-kind-icon">_damping</a>
+							</li>
+							<li class=" tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+								<a href="_physics_.world.html#_drawbodies" class="tsd-kind-icon">_draw<wbr>Bodies</a>
+							</li>
+							<li class=" tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+								<a href="_physics_.world.html#_drawparticles" class="tsd-kind-icon">_draw<wbr>Particles</a>
+							</li>
+							<li class=" tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+								<a href="_physics_.world.html#_friction" class="tsd-kind-icon">_friction</a>
+							</li>
+							<li class=" tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+								<a href="_physics_.world.html#_gravity" class="tsd-kind-icon">_gravity</a>
+							</li>
+							<li class=" tsd-kind-property tsd-parent-kind-class tsd-is-private">
+								<a href="_physics_.world.html#_lasttime" class="tsd-kind-icon">_last<wbr>Time</a>
+							</li>
+							<li class=" tsd-kind-property tsd-parent-kind-class tsd-is-protected">
+								<a href="_physics_.world.html#_particles" class="tsd-kind-icon">_particles</a>
+							</li>
+							<li class=" tsd-kind-get-signature tsd-parent-kind-class">
+								<a href="_physics_.world.html#bodycount" class="tsd-kind-icon">body<wbr>Count</a>
+							</li>
+							<li class=" tsd-kind-accessor tsd-parent-kind-class">
+								<a href="_physics_.world.html#damping" class="tsd-kind-icon">damping</a>
+							</li>
+							<li class=" tsd-kind-accessor tsd-parent-kind-class">
+								<a href="_physics_.world.html#friction" class="tsd-kind-icon">friction</a>
+							</li>
+							<li class=" tsd-kind-accessor tsd-parent-kind-class">
+								<a href="_physics_.world.html#gravity" class="tsd-kind-icon">gravity</a>
+							</li>
+							<li class=" tsd-kind-get-signature tsd-parent-kind-class">
+								<a href="_physics_.world.html#particlecount" class="tsd-kind-icon">particle<wbr>Count</a>
+							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-protected">
+								<a href="_physics_.world.html#_updatebodies" class="tsd-kind-icon">_update<wbr>Bodies</a>
+							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-protected">
+								<a href="_physics_.world.html#_updateparticles" class="tsd-kind-icon">_update<wbr>Particles</a>
+							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class">
+								<a href="_physics_.world.html#add" class="tsd-kind-icon">add</a>
+							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class">
+								<a href="_physics_.world.html#body" class="tsd-kind-icon">body</a>
+							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class">
+								<a href="_physics_.world.html#drawbodies" class="tsd-kind-icon">draw<wbr>Bodies</a>
+							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class">
+								<a href="_physics_.world.html#drawparticles" class="tsd-kind-icon">draw<wbr>Particles</a>
+							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-protected">
+								<a href="_physics_.world.html#integrate" class="tsd-kind-icon">integrate</a>
+							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class">
+								<a href="_physics_.world.html#particle" class="tsd-kind-icon">particle</a>
+							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class">
+								<a href="_physics_.world.html#remove" class="tsd-kind-icon">remove</a>
+							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class">
+								<a href="_physics_.world.html#update" class="tsd-kind-icon">update</a>
+							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-static">
+								<a href="_physics_.world.html#boundconstraint" class="tsd-kind-icon">bound<wbr>Constraint</a>
+							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-static">
+								<a href="_physics_.world.html#edgeconstraint" class="tsd-kind-icon">edge<wbr>Constraint</a>
+							</li>
+							<li class=" tsd-kind-object-literal tsd-parent-kind-class tsd-is-protected">
+								<a href="_physics_.world.html#_names" class="tsd-kind-icon">_names</a>
+							</li>
+						</ul>
+					</li>
+				</ul>
+				<ul class="after-current">
+				</ul>
+			</nav>
+		</div>
+	</div>
+</div>
+<footer class="with-border-bottom">
+	<div class="container">
+		<h2>Legend</h2>
+		<div class="tsd-legend-group">
+			<ul class="tsd-legend">
+				<li class="tsd-kind-module"><span class="tsd-kind-icon">Module</span></li>
+				<li class="tsd-kind-object-literal"><span class="tsd-kind-icon">Object literal</span></li>
+				<li class="tsd-kind-variable"><span class="tsd-kind-icon">Variable</span></li>
+				<li class="tsd-kind-function"><span class="tsd-kind-icon">Function</span></li>
+				<li class="tsd-kind-function tsd-has-type-parameter"><span class="tsd-kind-icon">Function with type parameter</span></li>
+				<li class="tsd-kind-index-signature"><span class="tsd-kind-icon">Index signature</span></li>
+				<li class="tsd-kind-type-alias"><span class="tsd-kind-icon">Type alias</span></li>
+			</ul>
+			<ul class="tsd-legend">
+				<li class="tsd-kind-enum"><span class="tsd-kind-icon">Enumeration</span></li>
+				<li class="tsd-kind-enum-member"><span class="tsd-kind-icon">Enumeration member</span></li>
+				<li class="tsd-kind-property tsd-parent-kind-enum"><span class="tsd-kind-icon">Property</span></li>
+				<li class="tsd-kind-method tsd-parent-kind-enum"><span class="tsd-kind-icon">Method</span></li>
+			</ul>
+			<ul class="tsd-legend">
+				<li class="tsd-kind-interface"><span class="tsd-kind-icon">Interface</span></li>
+				<li class="tsd-kind-interface tsd-has-type-parameter"><span class="tsd-kind-icon">Interface with type parameter</span></li>
+				<li class="tsd-kind-constructor tsd-parent-kind-interface"><span class="tsd-kind-icon">Constructor</span></li>
+				<li class="tsd-kind-property tsd-parent-kind-interface"><span class="tsd-kind-icon">Property</span></li>
+				<li class="tsd-kind-method tsd-parent-kind-interface"><span class="tsd-kind-icon">Method</span></li>
+				<li class="tsd-kind-index-signature tsd-parent-kind-interface"><span class="tsd-kind-icon">Index signature</span></li>
+			</ul>
+			<ul class="tsd-legend">
+				<li class="tsd-kind-class"><span class="tsd-kind-icon">Class</span></li>
+				<li class="tsd-kind-class tsd-has-type-parameter"><span class="tsd-kind-icon">Class with type parameter</span></li>
+				<li class="tsd-kind-constructor tsd-parent-kind-class"><span class="tsd-kind-icon">Constructor</span></li>
+				<li class="tsd-kind-property tsd-parent-kind-class"><span class="tsd-kind-icon">Property</span></li>
+				<li class="tsd-kind-method tsd-parent-kind-class"><span class="tsd-kind-icon">Method</span></li>
+				<li class="tsd-kind-accessor tsd-parent-kind-class"><span class="tsd-kind-icon">Accessor</span></li>
+				<li class="tsd-kind-index-signature tsd-parent-kind-class"><span class="tsd-kind-icon">Index signature</span></li>
+			</ul>
+			<ul class="tsd-legend">
+				<li class="tsd-kind-constructor tsd-parent-kind-class tsd-is-inherited"><span class="tsd-kind-icon">Inherited constructor</span></li>
+				<li class="tsd-kind-property tsd-parent-kind-class tsd-is-inherited"><span class="tsd-kind-icon">Inherited property</span></li>
+				<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><span class="tsd-kind-icon">Inherited method</span></li>
+				<li class="tsd-kind-accessor tsd-parent-kind-class tsd-is-inherited"><span class="tsd-kind-icon">Inherited accessor</span></li>
+			</ul>
+			<ul class="tsd-legend">
+				<li class="tsd-kind-property tsd-parent-kind-class tsd-is-protected"><span class="tsd-kind-icon">Protected property</span></li>
+				<li class="tsd-kind-method tsd-parent-kind-class tsd-is-protected"><span class="tsd-kind-icon">Protected method</span></li>
+				<li class="tsd-kind-accessor tsd-parent-kind-class tsd-is-protected"><span class="tsd-kind-icon">Protected accessor</span></li>
+			</ul>
+			<ul class="tsd-legend">
+				<li class="tsd-kind-property tsd-parent-kind-class tsd-is-private"><span class="tsd-kind-icon">Private property</span></li>
+				<li class="tsd-kind-method tsd-parent-kind-class tsd-is-private"><span class="tsd-kind-icon">Private method</span></li>
+				<li class="tsd-kind-accessor tsd-parent-kind-class tsd-is-private"><span class="tsd-kind-icon">Private accessor</span></li>
+			</ul>
+			<ul class="tsd-legend">
+				<li class="tsd-kind-property tsd-parent-kind-class tsd-is-static"><span class="tsd-kind-icon">Static property</span></li>
+				<li class="tsd-kind-call-signature tsd-parent-kind-class tsd-is-static"><span class="tsd-kind-icon">Static method</span></li>
+			</ul>
+		</div>
+	</div>
+</footer>
+<div class="container tsd-generator">
+	<p>Generated using <a href="http://typedoc.org/" target="_blank">TypeDoc</a></p>
+</div>
+<div class="overlay"></div>
+<script src="../assets/js/main.js"></script>
+<script>if (location.protocol == 'file:') document.write('<script src="../assets/js/search.js"><' + '/script>');</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/docs/classes/_pt_.group.html b/docs/classes/_pt_.group.html
index aa791e19..9f4d9add 100644
--- a/docs/classes/_pt_.group.html
+++ b/docs/classes/_pt_.group.html
@@ -92,6 +92,9 @@ <h3>Hierarchy</h3>
 									<li>
 										<a href="_create_.delaunay.html" class="tsd-signature-type">Delaunay</a>
 									</li>
+									<li>
+										<a href="_physics_.body.html" class="tsd-signature-type">Body</a>
+									</li>
 								</ul>
 							</li>
 						</ul>
@@ -222,7 +225,7 @@ <h3>constructor</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L510">Pt.ts:510</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L516">Pt.ts:516</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -244,7 +247,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _id</h3>
 					<div class="tsd-signature tsd-kind-icon">_id<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L510">Pt.ts:510</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L516">Pt.ts:516</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -288,7 +291,7 @@ <h3>id</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L516">Pt.ts:516</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L522">Pt.ts:522</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4>
@@ -296,7 +299,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</s
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L517">Pt.ts:517</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L523">Pt.ts:523</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -319,7 +322,7 @@ <h3>p1</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L520">Pt.ts:520</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L526">Pt.ts:526</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -341,7 +344,7 @@ <h3>p2</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L523">Pt.ts:523</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L529">Pt.ts:529</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -363,7 +366,7 @@ <h3>p3</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L526">Pt.ts:526</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L532">Pt.ts:532</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -385,7 +388,7 @@ <h3>p4</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L529">Pt.ts:529</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L535">Pt.ts:535</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -407,7 +410,7 @@ <h3>q1</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L532">Pt.ts:532</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L538">Pt.ts:538</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -429,7 +432,7 @@ <h3>q2</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L535">Pt.ts:535</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L541">Pt.ts:541</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -451,7 +454,7 @@ <h3>q3</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L538">Pt.ts:538</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L544">Pt.ts:544</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -473,7 +476,7 @@ <h3>q4</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L541">Pt.ts:541</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L547">Pt.ts:547</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -498,7 +501,7 @@ <h3>$matrix<wbr>Add</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L848">Pt.ts:848</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L854">Pt.ts:854</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -530,7 +533,7 @@ <h3>$matrix<wbr>Multiply</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L860">Pt.ts:860</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L866">Pt.ts:866</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -574,7 +577,7 @@ <h3>$zip</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L879">Pt.ts:879</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L885">Pt.ts:885</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -611,7 +614,7 @@ <h3>add</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L811">Pt.ts:811</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L817">Pt.ts:817</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -642,7 +645,7 @@ <h3>anchor<wbr>From</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L662">Pt.ts:662</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L668">Pt.ts:668</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -673,7 +676,7 @@ <h3>anchor<wbr>To</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L655">Pt.ts:655</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L661">Pt.ts:661</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -704,7 +707,7 @@ <h3>bounding<wbr>Box</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L646">Pt.ts:646</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L652">Pt.ts:652</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -727,7 +730,7 @@ <h3>centroid</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L637">Pt.ts:637</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L643">Pt.ts:643</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -749,7 +752,7 @@ <h3>clone</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L549">Pt.ts:549</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L555">Pt.ts:555</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -771,7 +774,7 @@ <h3>divide</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L838">Pt.ts:838</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L844">Pt.ts:844</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -802,7 +805,7 @@ <h3>for<wbr>Each<wbr>Pt</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L795">Pt.ts:795</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L801">Pt.ts:801</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -839,7 +842,7 @@ <h3>insert</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L599">Pt.ts:599</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L605">Pt.ts:605</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -876,7 +879,7 @@ <h3>interpolate</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L698">Pt.ts:698</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L704">Pt.ts:704</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -907,7 +910,7 @@ <h3>lines</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L631">Pt.ts:631</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L637">Pt.ts:637</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -929,7 +932,7 @@ <h3>move<wbr>By</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L711">Pt.ts:711</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L717">Pt.ts:717</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -960,7 +963,7 @@ <h3>move<wbr>To</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L719">Pt.ts:719</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L725">Pt.ts:725</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -991,7 +994,7 @@ <h3>multiply</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L829">Pt.ts:829</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L835">Pt.ts:835</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1022,7 +1025,7 @@ <h3>op</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L671">Pt.ts:671</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L677">Pt.ts:677</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1094,7 +1097,7 @@ <h3>ops</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L685">Pt.ts:685</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L691">Pt.ts:691</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1127,7 +1130,7 @@ <h3>reflect2D</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L772">Pt.ts:772</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L778">Pt.ts:778</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1164,7 +1167,7 @@ <h3>remove</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L611">Pt.ts:611</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L617">Pt.ts:617</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1202,7 +1205,7 @@ <h3>rotate2D</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L745">Pt.ts:745</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L751">Pt.ts:751</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1245,7 +1248,7 @@ <h3>scale</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L731">Pt.ts:731</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L737">Pt.ts:737</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1282,7 +1285,7 @@ <h3>segments</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L623">Pt.ts:623</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L629">Pt.ts:629</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1325,7 +1328,7 @@ <h3>shear2D</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L759">Pt.ts:759</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L765">Pt.ts:765</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1365,7 +1368,7 @@ <h3>sort<wbr>ByDimension</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L785">Pt.ts:785</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L791">Pt.ts:791</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1402,7 +1405,7 @@ <h3>split</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L588">Pt.ts:588</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L594">Pt.ts:594</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1445,7 +1448,7 @@ <h3>subtract</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L820">Pt.ts:820</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L826">Pt.ts:826</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1476,7 +1479,7 @@ <h3>to<wbr>String</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L887">Pt.ts:887</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L893">Pt.ts:893</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1498,7 +1501,7 @@ <h3>zip<wbr>Slice</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L870">Pt.ts:870</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L876">Pt.ts:876</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2574,7 +2577,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> from<wbr>Array</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L563">Pt.ts:563</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L569">Pt.ts:569</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2610,7 +2613,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> from<wbr>PtArray</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L577">Pt.ts:577</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L583">Pt.ts:583</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -4442,6 +4445,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">IterableI
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class="current tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -4463,6 +4469,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">IterableI
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/classes/_pt_.pt.html b/docs/classes/_pt_.pt.html
index 78f83578..08d2f07b 100644
--- a/docs/classes/_pt_.pt.html
+++ b/docs/classes/_pt_.pt.html
@@ -92,6 +92,9 @@ <h3>Hierarchy</h3>
 									<li>
 										<a href="_color_.color.html" class="tsd-signature-type">Color</a>
 									</li>
+									<li>
+										<a href="_physics_.particle.html" class="tsd-signature-type">Particle</a>
+									</li>
 								</ul>
 							</li>
 						</ul>
@@ -185,6 +188,7 @@ <h3>Methods</h3>
 								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_pt_.pt.html#multiply" class="tsd-kind-icon">multiply</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_pt_.pt.html#op" class="tsd-kind-icon">op</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_pt_.pt.html#ops" class="tsd-kind-icon">ops</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_pt_.pt.html#projectscalar" class="tsd-kind-icon">project<wbr>Scalar</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_pt_.pt.html#reflect2d" class="tsd-kind-icon">reflect2D</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_pt_.pt.html#rotate2d" class="tsd-kind-icon">rotate2D</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class"><a href="_pt_.pt.html#round" class="tsd-kind-icon">round</a></li>
@@ -239,7 +243,7 @@ <h3>constructor</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L28">Pt.ts:28</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L28">Pt.ts:28</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -277,7 +281,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _id</h3>
 					<div class="tsd-signature tsd-kind-icon">_id<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L28">Pt.ts:28</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L28">Pt.ts:28</a></li>
 						</ul>
 					</aside>
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@@ -396,7 +400,7 @@ <h3>id</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L56">Pt.ts:56</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L56">Pt.ts:56</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4>
@@ -404,7 +408,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</s
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L57">Pt.ts:57</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L57">Pt.ts:57</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -428,7 +432,7 @@ <h3>w</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L62">Pt.ts:62</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L62">Pt.ts:62</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -436,7 +440,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L67">Pt.ts:67</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L67">Pt.ts:67</a></li>
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 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -460,7 +464,7 @@ <h3>x</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L59">Pt.ts:59</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L59">Pt.ts:59</a></li>
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 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -468,7 +472,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L64">Pt.ts:64</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L64">Pt.ts:64</a></li>
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 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -492,7 +496,7 @@ <h3>y</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L60">Pt.ts:60</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L60">Pt.ts:60</a></li>
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 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -500,7 +504,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L65">Pt.ts:65</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L65">Pt.ts:65</a></li>
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 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -524,7 +528,7 @@ <h3>z</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L61">Pt.ts:61</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L61">Pt.ts:61</a></li>
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 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
@@ -532,7 +536,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</s
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L66">Pt.ts:66</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L66">Pt.ts:66</a></li>
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 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -558,7 +562,7 @@ <h3>$abs</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L315">Pt.ts:315</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L321">Pt.ts:321</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -580,7 +584,7 @@ <h3>$add</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L190">Pt.ts:190</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L190">Pt.ts:190</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -608,7 +612,7 @@ <h3>$ceil</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L349">Pt.ts:349</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L355">Pt.ts:355</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -630,7 +634,7 @@ <h3>$concat</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L172">Pt.ts:172</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L172">Pt.ts:172</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -661,7 +665,7 @@ <h3>$cross</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L287">Pt.ts:287</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L287">Pt.ts:287</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -692,7 +696,7 @@ <h3>$divide</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L238">Pt.ts:238</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L238">Pt.ts:238</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -720,7 +724,7 @@ <h3>$floor</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L332">Pt.ts:332</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L338">Pt.ts:338</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -742,7 +746,7 @@ <h3>$max</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L407">Pt.ts:407</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L413">Pt.ts:413</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -773,7 +777,7 @@ <h3>$min</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L393">Pt.ts:393</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L399">Pt.ts:399</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -804,7 +808,7 @@ <h3>$multiply</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L222">Pt.ts:222</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L222">Pt.ts:222</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -826,30 +830,28 @@ <h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signatur
 					<a name="_project" class="tsd-anchor"></a>
 					<h3>$project</h3>
 					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class">
-						<li class="tsd-signature tsd-kind-icon">$project<span class="tsd-signature-symbol">(</span>p<span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
+						<li class="tsd-signature tsd-kind-icon">$project<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
 					</ul>
 					<ul class="tsd-descriptions">
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L294">Pt.ts:294</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L295">Pt.ts:295</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
 								<div class="lead">
-									<p>Calculate vector projection of this Pt on another Pt. Returns result as a new Pt.</p>
+									<p>Calculate vector projection of this Pt on another Pt.</p>
 								</div>
 							</div>
 							<h4 class="tsd-parameters-title">Parameters</h4>
 							<ul class="tsd-parameters">
 								<li>
-									<h5>p: <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
-									<div class="tsd-comment tsd-typography">
-										<p>a list of numbers, an array of number, or an object with {x,y,z,w} properties</p>
-									</div>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
 								</li>
 							</ul>
 							<h4 class="tsd-returns-title">Returns <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a></h4>
+							<p>the projection vector as a Pt</p>
 						</li>
 					</ul>
 				</section>
@@ -863,7 +865,7 @@ <h3>$round</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L366">Pt.ts:366</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L372">Pt.ts:372</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -885,7 +887,7 @@ <h3>$subtract</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L206">Pt.ts:206</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L206">Pt.ts:206</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -913,7 +915,7 @@ <h3>$take</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L159">Pt.ts:159</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L159">Pt.ts:159</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -944,7 +946,7 @@ <h3>$to</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L108">Pt.ts:108</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L108">Pt.ts:108</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -975,7 +977,7 @@ <h3>$unit</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L266">Pt.ts:266</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L266">Pt.ts:266</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1003,7 +1005,7 @@ <h3>abs</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L306">Pt.ts:306</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L312">Pt.ts:312</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1025,7 +1027,7 @@ <h3>add</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L181">Pt.ts:181</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L181">Pt.ts:181</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1056,7 +1058,7 @@ <h3>angle</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L421">Pt.ts:421</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L427">Pt.ts:427</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1087,7 +1089,7 @@ <h3>angle<wbr>Between</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L431">Pt.ts:431</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L437">Pt.ts:437</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1124,7 +1126,7 @@ <h3>ceil</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L340">Pt.ts:340</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L346">Pt.ts:346</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1146,7 +1148,7 @@ <h3>clone</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L73">Pt.ts:73</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L73">Pt.ts:73</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1168,7 +1170,7 @@ <h3>cross2D</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L280">Pt.ts:280</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L280">Pt.ts:280</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1199,7 +1201,7 @@ <h3>divide</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L229">Pt.ts:229</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L229">Pt.ts:229</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1230,7 +1232,7 @@ <h3>dot</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L273">Pt.ts:273</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L273">Pt.ts:273</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1261,7 +1263,7 @@ <h3>equals</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L83">Pt.ts:83</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L83">Pt.ts:83</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1298,7 +1300,7 @@ <h3>floor</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L323">Pt.ts:323</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L329">Pt.ts:329</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1320,7 +1322,7 @@ <h3>magnitude</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L250">Pt.ts:250</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L250">Pt.ts:250</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1342,7 +1344,7 @@ <h3>magnitude<wbr>Sq</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L244">Pt.ts:244</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L244">Pt.ts:244</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1364,7 +1366,7 @@ <h3>max<wbr>Value</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L384">Pt.ts:384</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L390">Pt.ts:390</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1395,7 +1397,7 @@ <h3>min<wbr>Value</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L375">Pt.ts:375</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L381">Pt.ts:381</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1426,7 +1428,7 @@ <h3>multiply</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L213">Pt.ts:213</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L213">Pt.ts:213</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1457,7 +1459,7 @@ <h3>op</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L132">Pt.ts:132</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L132">Pt.ts:132</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1529,7 +1531,7 @@ <h3>ops</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L146">Pt.ts:146</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L146">Pt.ts:146</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1552,6 +1554,34 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">function<
 						</li>
 					</ul>
 				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class">
+					<a name="projectscalar" class="tsd-anchor"></a>
+					<h3>project<wbr>Scalar</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class">
+						<li class="tsd-signature tsd-kind-icon">project<wbr>Scalar<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">...</span>args<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L304">Pt.ts:304</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Calculate scalar projection</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5><span class="tsd-flag ts-flagRest">Rest</span> <span class="tsd-signature-symbol">...</span>args: <span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">[]</span></h5>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+						</li>
+					</ul>
+				</section>
 				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class">
 					<a name="reflect2d" class="tsd-anchor"></a>
 					<h3>reflect2D</h3>
@@ -1562,7 +1592,7 @@ <h3>reflect2D</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L476">Pt.ts:476</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L482">Pt.ts:482</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1599,7 +1629,7 @@ <h3>rotate2D</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L453">Pt.ts:453</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L459">Pt.ts:459</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1642,7 +1672,7 @@ <h3>round</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L357">Pt.ts:357</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L363">Pt.ts:363</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1664,7 +1694,7 @@ <h3>scale</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L441">Pt.ts:441</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L447">Pt.ts:447</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1701,7 +1731,7 @@ <h3>shear2D</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L465">Pt.ts:465</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L471">Pt.ts:471</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1741,7 +1771,7 @@ <h3>subtract</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L197">Pt.ts:197</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L197">Pt.ts:197</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1772,7 +1802,7 @@ <h3>to</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L95">Pt.ts:95</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L95">Pt.ts:95</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1803,7 +1833,7 @@ <h3>to<wbr>Angle</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L119">Pt.ts:119</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L119">Pt.ts:119</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1846,7 +1876,7 @@ <h3>to<wbr>Array</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L493">Pt.ts:493</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L499">Pt.ts:499</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1868,7 +1898,7 @@ <h3>to<wbr>String</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L485">Pt.ts:485</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L491">Pt.ts:491</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1890,7 +1920,7 @@ <h3>unit</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L257">Pt.ts:257</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L257">Pt.ts:257</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2993,7 +3023,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> make</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L45">Pt.ts:45</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L45">Pt.ts:45</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -3902,6 +3932,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">IterableI
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class="current tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -3923,6 +3956,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">IterableI
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
@@ -4079,6 +4115,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">IterableI
 							<li class=" tsd-kind-method tsd-parent-kind-class">
 								<a href="_pt_.pt.html#ops" class="tsd-kind-icon">ops</a>
 							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class">
+								<a href="_pt_.pt.html#projectscalar" class="tsd-kind-icon">project<wbr>Scalar</a>
+							</li>
 							<li class=" tsd-kind-method tsd-parent-kind-class">
 								<a href="_pt_.pt.html#reflect2d" class="tsd-kind-icon">reflect2D</a>
 							</li>
diff --git a/docs/classes/_space_.multitouchspace.html b/docs/classes/_space_.multitouchspace.html
index 9a1c9033..bce54c97 100644
--- a/docs/classes/_space_.multitouchspace.html
+++ b/docs/classes/_space_.multitouchspace.html
@@ -175,7 +175,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _canvas</h3>
 					<div class="tsd-signature tsd-kind-icon">_canvas<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">EventTarget</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L313">Space.ts:313</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L313">Space.ts:313</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -186,7 +186,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _ctx</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#_ctx">_ctx</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L47">Space.ts:47</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L47">Space.ts:47</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -196,7 +196,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _dragged</h3>
 					<div class="tsd-signature tsd-kind-icon">_dragged<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;false</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L307">Space.ts:307</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L307">Space.ts:307</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -206,7 +206,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _has<wbr>Mouse</h3>
 					<div class="tsd-signature tsd-kind-icon">_has<wbr>Mouse<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;false</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L309">Space.ts:309</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L309">Space.ts:309</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -216,7 +216,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _has<wbr>Touch</h3>
 					<div class="tsd-signature tsd-kind-icon">_has<wbr>Touch<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;false</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L310">Space.ts:310</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L310">Space.ts:310</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -227,7 +227,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _is<wbr>Ready</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#_isready">_isReady</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L57">Space.ts:57</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L57">Space.ts:57</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -238,7 +238,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _playing</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#_playing">_playing</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L58">Space.ts:58</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L58">Space.ts:58</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -249,7 +249,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _pointer</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#_pointer">_pointer</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L55">Space.ts:55</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L55">Space.ts:55</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -259,7 +259,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _pressed</h3>
 					<div class="tsd-signature tsd-kind-icon">_pressed<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;false</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L306">Space.ts:306</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L306">Space.ts:306</a></li>
 						</ul>
 					</aside>
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@@ -270,7 +270,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> bound</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#bound">bound</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L42">Space.ts:42</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L42">Space.ts:42</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -281,7 +281,7 @@ <h3>id</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#id">id</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L41">Space.ts:41</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L41">Space.ts:41</a></li>
 						</ul>
 					</aside>
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@@ -292,7 +292,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> player<wbr>Count</h
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#playercount">playerCount</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L46">Space.ts:46</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L46">Space.ts:46</a></li>
 						</ul>
 					</aside>
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@@ -303,7 +303,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> players</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#players">players</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L45">Space.ts:45</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L45">Space.ts:45</a></li>
 						</ul>
 					</aside>
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@@ -321,7 +321,7 @@ <h3>center</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#center">center</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L260">Space.ts:260</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L260">Space.ts:260</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -345,7 +345,7 @@ <h3>custom<wbr>Rendering</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#customrendering">customRendering</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L230">Space.ts:230</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L230">Space.ts:230</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -380,7 +380,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">null</spa
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#customrendering">customRendering</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L229">Space.ts:229</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L229">Space.ts:229</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -430,7 +430,7 @@ <h3>height</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#height">height</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L272">Space.ts:272</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L272">Space.ts:272</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -453,7 +453,7 @@ <h3>inner<wbr>Bound</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#innerbound">innerBound</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L248">Space.ts:248</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L248">Space.ts:248</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -476,7 +476,7 @@ <h3>is<wbr>Playing</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#isplaying">isPlaying</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L236">Space.ts:236</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L236">Space.ts:236</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -499,7 +499,7 @@ <h3>outer<wbr>Bound</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#outerbound">outerBound</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L242">Space.ts:242</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L242">Space.ts:242</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -521,7 +521,7 @@ <h3>pointer</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L318">Space.ts:318</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L318">Space.ts:318</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -544,7 +544,7 @@ <h3>size</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#size">size</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L254">Space.ts:254</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L254">Space.ts:254</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -567,7 +567,7 @@ <h3>width</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#width">width</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L266">Space.ts:266</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L266">Space.ts:266</a></li>
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 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -592,7 +592,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Action</
 						<li class="tsd-description">
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 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L416">Space.ts:416</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L416">Space.ts:416</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -629,7 +629,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Down</h3
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L451">Space.ts:451</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L451">Space.ts:451</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -659,7 +659,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Move</h3
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L475">Space.ts:475</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L475">Space.ts:475</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -689,7 +689,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Out</h3>
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 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L499">Space.ts:499</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L499">Space.ts:499</a></li>
 								</ul>
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 							<div class="tsd-comment tsd-typography">
@@ -719,7 +719,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Over</h3
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L489">Space.ts:489</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L489">Space.ts:489</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -749,7 +749,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Up</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L462">Space.ts:462</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L462">Space.ts:462</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -779,7 +779,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _touch<wbr>Move</h3
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L511">Space.ts:511</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L511">Space.ts:511</a></li>
 								</ul>
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 							<div class="tsd-comment tsd-typography">
@@ -810,7 +810,7 @@ <h3>add</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#add">add</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L80">Space.ts:80</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L80">Space.ts:80</a></li>
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 							<div class="tsd-comment tsd-typography">
@@ -845,7 +845,7 @@ <h3>bind<wbr>Canvas</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L329">Space.ts:329</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L329">Space.ts:329</a></li>
 								</ul>
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 							<div class="tsd-comment tsd-typography">
@@ -882,7 +882,7 @@ <h3>bind<wbr>Mouse</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L349">Space.ts:349</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L349">Space.ts:349</a></li>
 								</ul>
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 							<div class="tsd-comment tsd-typography">
@@ -918,7 +918,7 @@ <h3>bind<wbr>Touch</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L374">Space.ts:374</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L374">Space.ts:374</a></li>
 								</ul>
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 							<div class="tsd-comment tsd-typography">
@@ -955,7 +955,7 @@ <h3>clear</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#clear">clear</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L286">Space.ts:286</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L286">Space.ts:286</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -978,7 +978,7 @@ <h3>get<wbr>Form</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#getform">getForm</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L292">Space.ts:292</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L292">Space.ts:292</a></li>
 								</ul>
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 							<div class="tsd-comment tsd-typography">
@@ -1001,7 +1001,7 @@ <h3>pause</h3>
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 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#pause">pause</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L181">Space.ts:181</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L181">Space.ts:181</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1033,7 +1033,7 @@ <h3>play</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#play">play</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L121">Space.ts:121</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L121">Space.ts:121</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1066,7 +1066,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> play<wbr>Items</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#playitems">playItems</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L155">Space.ts:155</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L155">Space.ts:155</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1098,7 +1098,7 @@ <h3>play<wbr>Once</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#playonce">playOnce</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L210">Space.ts:210</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L210">Space.ts:210</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1130,7 +1130,7 @@ <h3>refresh</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#refresh">refresh</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L65">Space.ts:65</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L65">Space.ts:65</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1162,7 +1162,7 @@ <h3>remove</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#remove">remove</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L101">Space.ts:101</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L101">Space.ts:101</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1194,7 +1194,7 @@ <h3>remove<wbr>All</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#removeall">removeAll</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L110">Space.ts:110</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L110">Space.ts:110</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1217,7 +1217,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> render</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#render">render</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L220">Space.ts:220</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L220">Space.ts:220</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1249,7 +1249,7 @@ <h3>replay</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#replay">replay</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L145">Space.ts:145</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L145">Space.ts:145</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1273,7 +1273,7 @@ <h3>resize</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#resize">resize</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L280">Space.ts:280</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L280">Space.ts:280</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1305,7 +1305,7 @@ <h3>resume</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#resume">resume</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L190">Space.ts:190</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L190">Space.ts:190</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1328,7 +1328,7 @@ <h3>stop</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#stop">stop</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L200">Space.ts:200</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L200">Space.ts:200</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1359,7 +1359,7 @@ <h3>touches<wbr>ToPoints</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L400">Space.ts:400</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L400">Space.ts:400</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1397,7 +1397,7 @@ <h3>unbind<wbr>Canvas</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L339">Space.ts:339</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L339">Space.ts:339</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1434,7 +1434,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _time</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#_time">_time</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L44">Space.ts:44</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L44">Space.ts:44</a></li>
 						</ul>
 					</aside>
 					<section class="tsd-panel tsd-member tsd-kind-variable tsd-parent-kind-object-literal">
@@ -1443,7 +1443,7 @@ <h3>diff</h3>
 						<div class="tsd-signature tsd-kind-icon">diff<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L44">Space.ts:44</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L44">Space.ts:44</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -1453,7 +1453,7 @@ <h3>end</h3>
 						<div class="tsd-signature tsd-kind-icon">end<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;-1</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L44">Space.ts:44</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L44">Space.ts:44</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -1463,7 +1463,7 @@ <h3>prev</h3>
 						<div class="tsd-signature tsd-kind-icon">prev<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L44">Space.ts:44</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L44">Space.ts:44</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -1503,6 +1503,9 @@ <h3>prev</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -1524,6 +1527,9 @@ <h3>prev</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/classes/_space_.space.html b/docs/classes/_space_.space.html
index 5a7dd85e..7bf8bf1f 100644
--- a/docs/classes/_space_.space.html
+++ b/docs/classes/_space_.space.html
@@ -161,7 +161,7 @@ <h3><span class="tsd-flag ts-flagPrivate">Private</span> _animID</h3>
 					<div class="tsd-signature tsd-kind-icon">_animID<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;-1</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L49">Space.ts:49</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L49">Space.ts:49</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -171,7 +171,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _ctx</h3>
 					<div class="tsd-signature tsd-kind-icon">_ctx<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">any</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L47">Space.ts:47</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L47">Space.ts:47</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -181,7 +181,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _is<wbr>Ready</h3>
 					<div class="tsd-signature tsd-kind-icon">_is<wbr>Ready<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;false</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L57">Space.ts:57</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L57">Space.ts:57</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -191,7 +191,7 @@ <h3><span class="tsd-flag ts-flagPrivate">Private</span> _pause</h3>
 					<div class="tsd-signature tsd-kind-icon">_pause<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;false</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L51">Space.ts:51</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L51">Space.ts:51</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -201,7 +201,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _playing</h3>
 					<div class="tsd-signature tsd-kind-icon">_playing<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;false</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L58">Space.ts:58</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L58">Space.ts:58</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -211,7 +211,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _pointer</h3>
 					<div class="tsd-signature tsd-kind-icon">_pointer<span class="tsd-signature-symbol">:</span> <a href="_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol"> =&nbsp;new Pt()</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L55">Space.ts:55</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L55">Space.ts:55</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -221,7 +221,7 @@ <h3><span class="tsd-flag ts-flagPrivate">Private</span> _refresh</h3>
 					<div class="tsd-signature tsd-kind-icon">_refresh<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;undefined</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L52">Space.ts:52</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L52">Space.ts:52</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -231,7 +231,7 @@ <h3><span class="tsd-flag ts-flagPrivate">Private</span> _render<wbr>Func</h3>
 					<div class="tsd-signature tsd-kind-icon">_render<wbr>Func<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">function</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L53">Space.ts:53</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L53">Space.ts:53</a></li>
 						</ul>
 					</aside>
 					<div class="tsd-type-declaration">
@@ -265,7 +265,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> bound</h3>
 					<div class="tsd-signature tsd-kind-icon">bound<span class="tsd-signature-symbol">:</span> <a href="_bound_.bound.html" class="tsd-signature-type">Bound</a><span class="tsd-signature-symbol"> =&nbsp;new Bound()</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L42">Space.ts:42</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L42">Space.ts:42</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -275,7 +275,7 @@ <h3>id</h3>
 					<div class="tsd-signature tsd-kind-icon">id<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;space&quot;</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L41">Space.ts:41</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L41">Space.ts:41</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -285,7 +285,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> player<wbr>Count</h
 					<div class="tsd-signature tsd-kind-icon">player<wbr>Count<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L46">Space.ts:46</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L46">Space.ts:46</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -295,7 +295,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> players</h3>
 					<div class="tsd-signature tsd-kind-icon">players<span class="tsd-signature-symbol">:</span> <a href="../interfaces/_space_.ispaceplayers.html" class="tsd-signature-type">ISpacePlayers</a></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L45">Space.ts:45</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L45">Space.ts:45</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -312,7 +312,7 @@ <h3>center</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L260">Space.ts:260</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L260">Space.ts:260</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -335,7 +335,7 @@ <h3>custom<wbr>Rendering</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L230">Space.ts:230</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L230">Space.ts:230</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -369,7 +369,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">null</spa
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L229">Space.ts:229</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L229">Space.ts:229</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -418,7 +418,7 @@ <h3>height</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L272">Space.ts:272</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L272">Space.ts:272</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -440,7 +440,7 @@ <h3>inner<wbr>Bound</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L248">Space.ts:248</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L248">Space.ts:248</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -462,7 +462,7 @@ <h3>is<wbr>Playing</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L236">Space.ts:236</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L236">Space.ts:236</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -484,7 +484,7 @@ <h3>outer<wbr>Bound</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L242">Space.ts:242</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L242">Space.ts:242</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -506,7 +506,7 @@ <h3>size</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L254">Space.ts:254</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L254">Space.ts:254</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -528,7 +528,7 @@ <h3>width</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L266">Space.ts:266</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L266">Space.ts:266</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -553,7 +553,7 @@ <h3>add</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L80">Space.ts:80</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L80">Space.ts:80</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -588,7 +588,7 @@ <h3>clear</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L286">Space.ts:286</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L286">Space.ts:286</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -610,7 +610,7 @@ <h3>get<wbr>Form</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L292">Space.ts:292</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L292">Space.ts:292</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -632,7 +632,7 @@ <h3>pause</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L181">Space.ts:181</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L181">Space.ts:181</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -663,7 +663,7 @@ <h3>play</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L121">Space.ts:121</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L121">Space.ts:121</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -695,7 +695,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> play<wbr>Items</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L155">Space.ts:155</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L155">Space.ts:155</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -726,7 +726,7 @@ <h3>play<wbr>Once</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L210">Space.ts:210</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L210">Space.ts:210</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -757,7 +757,7 @@ <h3>refresh</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L65">Space.ts:65</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L65">Space.ts:65</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -788,7 +788,7 @@ <h3>remove</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L101">Space.ts:101</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L101">Space.ts:101</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -819,7 +819,7 @@ <h3>remove<wbr>All</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L110">Space.ts:110</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L110">Space.ts:110</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -841,7 +841,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> render</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L220">Space.ts:220</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L220">Space.ts:220</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -872,7 +872,7 @@ <h3>replay</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L145">Space.ts:145</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L145">Space.ts:145</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -895,7 +895,7 @@ <h3>resize</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L280">Space.ts:280</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L280">Space.ts:280</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -926,7 +926,7 @@ <h3>resume</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L190">Space.ts:190</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L190">Space.ts:190</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -948,7 +948,7 @@ <h3>stop</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L200">Space.ts:200</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L200">Space.ts:200</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -978,7 +978,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _time</h3>
 					<div class="tsd-signature tsd-kind-icon">_time<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">object</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L44">Space.ts:44</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L44">Space.ts:44</a></li>
 						</ul>
 					</aside>
 					<section class="tsd-panel tsd-member tsd-kind-variable tsd-parent-kind-object-literal">
@@ -987,7 +987,7 @@ <h3>diff</h3>
 						<div class="tsd-signature tsd-kind-icon">diff<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L44">Space.ts:44</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L44">Space.ts:44</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -997,7 +997,7 @@ <h3>end</h3>
 						<div class="tsd-signature tsd-kind-icon">end<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;-1</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L44">Space.ts:44</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L44">Space.ts:44</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -1007,7 +1007,7 @@ <h3>prev</h3>
 						<div class="tsd-signature tsd-kind-icon">prev<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L44">Space.ts:44</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L44">Space.ts:44</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -1047,6 +1047,9 @@ <h3>prev</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -1068,6 +1071,9 @@ <h3>prev</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/classes/_svg_.svgform.html b/docs/classes/_svg_.svgform.html
index e049018b..fe117121 100644
--- a/docs/classes/_svg_.svgform.html
+++ b/docs/classes/_svg_.svgform.html
@@ -188,7 +188,7 @@ <h3>constructor</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L148">Svg.ts:148</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L152">Svg.ts:152</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -221,7 +221,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _filled</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#_filled">_filled</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L45">Form.ts:45</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L45">Form.ts:45</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -232,7 +232,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _font</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#_font">_font</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L53">Form.ts:53</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L53">Form.ts:53</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -243,7 +243,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _ready</h3>
 					<aside class="tsd-sources">
 						<p>Overrides <a href="_form_.form.html">Form</a>.<a href="_form_.form.html#_ready">_ready</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L148">Svg.ts:148</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L152">Svg.ts:152</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -253,7 +253,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _space</h3>
 					<div class="tsd-signature tsd-kind-icon">_space<span class="tsd-signature-symbol">:</span> <a href="_svg_.svgspace.html" class="tsd-signature-type">SVGSpace</a></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L147">Svg.ts:147</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L151">Svg.ts:151</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -264,7 +264,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _stroked</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#_stroked">_stroked</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L49">Form.ts:49</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L49">Form.ts:49</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -274,7 +274,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> domID</h3>
 					<div class="tsd-signature tsd-kind-icon">domID<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L145">Svg.ts:145</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L149">Svg.ts:149</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -284,7 +284,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> groupID</h3>
 					<div class="tsd-signature tsd-kind-icon">groupID<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L144">Svg.ts:144</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L148">Svg.ts:148</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -302,7 +302,7 @@ <h3>current<wbr>Font</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#currentfont">currentFont</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L54">Form.ts:54</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L54">Form.ts:54</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <a href="_form_.font.html" class="tsd-signature-type">Font</a></h4>
@@ -321,7 +321,7 @@ <h3>filled</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#filled">filled</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L46">Form.ts:46</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L46">Form.ts:46</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
@@ -330,7 +330,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#filled">filled</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L47">Form.ts:47</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L47">Form.ts:47</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -354,7 +354,7 @@ <h3>ready</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.form.html">Form</a>.<a href="_form_.form.html#ready">ready</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L19">Form.ts:19</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L19">Form.ts:19</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -376,7 +376,7 @@ <h3>space</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L170">Svg.ts:170</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L174">Svg.ts:174</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -400,7 +400,7 @@ <h3>stroked</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#stroked">stroked</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L50">Form.ts:50</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L50">Form.ts:50</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
@@ -409,7 +409,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#stroked">stroked</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L51">Form.ts:51</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L51">Form.ts:51</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -436,7 +436,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _multiple</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#_multiple">_multiple</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L57">Form.ts:57</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L57">Form.ts:57</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -466,7 +466,7 @@ <h3>arc</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#arc">arc</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L471">Svg.ts:471</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L475">Svg.ts:475</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -522,7 +522,7 @@ <h3>circle</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#circle">circle</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L426">Svg.ts:426</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L430">Svg.ts:430</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -559,7 +559,7 @@ <h3>circles</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#circles">circles</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L147">Form.ts:147</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L147">Form.ts:147</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -590,7 +590,7 @@ <h3>cls</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L227">Svg.ts:227</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L231">Svg.ts:231</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -627,7 +627,7 @@ <h3>fill</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#fill">fill</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L189">Svg.ts:189</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L193">Svg.ts:193</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -664,7 +664,7 @@ <h3>fill<wbr>Only</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#fillonly">fillOnly</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L85">Form.ts:85</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L85">Form.ts:85</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -701,7 +701,7 @@ <h3>font</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#font">font</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L246">Svg.ts:246</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L250">Svg.ts:250</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -762,7 +762,7 @@ <h3>line</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#line">line</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L539">Svg.ts:539</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L543">Svg.ts:543</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -794,7 +794,7 @@ <h3>lines</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#lines">lines</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L183">Form.ts:183</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L183">Form.ts:183</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -825,7 +825,7 @@ <h3>log</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L666">Svg.ts:666</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L670">Svg.ts:670</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -856,7 +856,7 @@ <h3>nextID</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L312">Svg.ts:312</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L316">Svg.ts:316</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -880,7 +880,7 @@ <h3>point</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#point">point</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L393">Svg.ts:393</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L397">Svg.ts:397</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -926,7 +926,7 @@ <h3>points</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#points">points</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L125">Form.ts:125</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L125">Form.ts:125</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -970,7 +970,7 @@ <h3>polygon</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#polygon">polygon</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L580">Svg.ts:580</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L584">Svg.ts:584</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1002,7 +1002,7 @@ <h3>polygons</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#polygons">polygons</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L199">Form.ts:199</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L199">Form.ts:199</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1034,7 +1034,7 @@ <h3>rect</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#rect">rect</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L616">Svg.ts:616</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L620">Svg.ts:620</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1066,7 +1066,7 @@ <h3>rects</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#rects">rects</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L216">Form.ts:216</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L216">Form.ts:216</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1098,7 +1098,7 @@ <h3>reset</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#reset">reset</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L266">Svg.ts:266</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L270">Svg.ts:270</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1120,7 +1120,7 @@ <h3>scope</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L302">Svg.ts:302</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L306">Svg.ts:306</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1152,7 +1152,7 @@ <h3>square</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L503">Svg.ts:503</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L507">Svg.ts:507</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1190,7 +1190,7 @@ <h3>squares</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#squares">squares</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L156">Form.ts:156</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L156">Form.ts:156</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1222,7 +1222,7 @@ <h3>stroke</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#stroke">stroke</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L208">Svg.ts:208</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L212">Svg.ts:212</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1277,7 +1277,7 @@ <h3>stroke<wbr>Only</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#strokeonly">strokeOnly</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L104">Form.ts:104</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L104">Form.ts:104</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1322,7 +1322,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> style<wbr>To</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L178">Svg.ts:178</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L182">Svg.ts:182</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1360,7 +1360,7 @@ <h3>text</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_form_.visualform.html">VisualForm</a>.<a href="_form_.visualform.html#text">text</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L655">Svg.ts:655</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L659">Svg.ts:659</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1391,7 +1391,7 @@ <h3>update<wbr>Scope</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L288">Svg.ts:288</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L292">Svg.ts:292</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1430,7 +1430,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> _check<wbr>Size</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_form_.form.html">Form</a>.<a href="_form_.form.html#_checksize">_checkSize</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Form.ts#L26">Form.ts:26</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Form.ts#L26">Form.ts:26</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1463,7 +1463,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> _poly</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L552">Svg.ts:552</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L556">Svg.ts:556</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1506,7 +1506,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> arc</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L442">Svg.ts:442</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L446">Svg.ts:446</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1567,7 +1567,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> circle</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L406">Svg.ts:406</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L410">Svg.ts:410</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1610,7 +1610,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> getID</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L323">Svg.ts:323</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L327">Svg.ts:327</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1641,7 +1641,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> line</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L515">Svg.ts:515</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L519">Svg.ts:519</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1678,7 +1678,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> point</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L377">Svg.ts:377</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L381">Svg.ts:381</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1732,7 +1732,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> polygon</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L571">Svg.ts:571</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L575">Svg.ts:575</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1769,7 +1769,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> rect</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L592">Svg.ts:592</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L596">Svg.ts:596</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1806,7 +1806,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> scopeID</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L332">Svg.ts:332</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L336">Svg.ts:336</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1837,7 +1837,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> square</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L484">Svg.ts:484</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L488">Svg.ts:488</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1880,7 +1880,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> style</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L344">Svg.ts:344</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L348">Svg.ts:348</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1923,7 +1923,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> text</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L630">Svg.ts:630</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L634">Svg.ts:634</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1959,7 +1959,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _ctx</h3>
 					<div class="tsd-signature tsd-kind-icon">_ctx<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">object</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L124">Svg.ts:124</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L128">Svg.ts:128</a></li>
 						</ul>
 					</aside>
 					<section class="tsd-panel tsd-member tsd-kind-variable tsd-parent-kind-object-literal">
@@ -1968,7 +1968,7 @@ <h3>current<wbr>Class</h3>
 						<div class="tsd-signature tsd-kind-icon">current<wbr>Class<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;&quot;</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L129">Svg.ts:129</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L133">Svg.ts:133</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -1978,7 +1978,7 @@ <h3>currentID</h3>
 						<div class="tsd-signature tsd-kind-icon">currentID<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;pts0&quot;</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L128">Svg.ts:128</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L132">Svg.ts:132</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -1988,7 +1988,7 @@ <h3>font</h3>
 						<div class="tsd-signature tsd-kind-icon">font<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;11px sans-serif&quot;</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L139">Svg.ts:139</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L143">Svg.ts:143</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -1998,7 +1998,7 @@ <h3>font<wbr>Family</h3>
 						<div class="tsd-signature tsd-kind-icon">font<wbr>Family<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;sans-serif&quot;</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L141">Svg.ts:141</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L145">Svg.ts:145</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -2008,7 +2008,7 @@ <h3>font<wbr>Size</h3>
 						<div class="tsd-signature tsd-kind-icon">font<wbr>Size<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;11</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L140">Svg.ts:140</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L144">Svg.ts:144</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -2018,7 +2018,7 @@ <h3>group</h3>
 						<div class="tsd-signature tsd-kind-icon">group<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">null</span><span class="tsd-signature-symbol"> =&nbsp;null</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L125">Svg.ts:125</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L129">Svg.ts:129</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -2028,7 +2028,7 @@ <h3>group<wbr>Count</h3>
 						<div class="tsd-signature tsd-kind-icon">group<wbr>Count<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L127">Svg.ts:127</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L131">Svg.ts:131</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -2038,7 +2038,7 @@ <h3>groupID</h3>
 						<div class="tsd-signature tsd-kind-icon">groupID<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;pts&quot;</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L126">Svg.ts:126</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L130">Svg.ts:130</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -2048,7 +2048,7 @@ <h3>style</h3>
 						<div class="tsd-signature tsd-kind-icon">style<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">object</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L130">Svg.ts:130</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L134">Svg.ts:134</a></li>
 							</ul>
 						</aside>
 						<section class="tsd-panel tsd-member tsd-kind-variable tsd-parent-kind-object-literal">
@@ -2057,7 +2057,7 @@ <h3>fill</h3>
 							<div class="tsd-signature tsd-kind-icon">fill<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;#f03&quot;</span></div>
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L133">Svg.ts:133</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L137">Svg.ts:137</a></li>
 								</ul>
 							</aside>
 						</section>
@@ -2067,7 +2067,7 @@ <h3>filled</h3>
 							<div class="tsd-signature tsd-kind-icon">filled<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;true</span></div>
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L131">Svg.ts:131</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L135">Svg.ts:135</a></li>
 								</ul>
 							</aside>
 						</section>
@@ -2077,7 +2077,7 @@ <h3>stroke</h3>
 							<div class="tsd-signature tsd-kind-icon">stroke<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;#fff&quot;</span></div>
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L134">Svg.ts:134</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L138">Svg.ts:138</a></li>
 								</ul>
 							</aside>
 						</section>
@@ -2087,7 +2087,7 @@ <h3>stroke-<wbr>linecap</h3>
 							<div class="tsd-signature tsd-kind-icon">stroke-<wbr>linecap<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;sqaure&quot;</span></div>
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L137">Svg.ts:137</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L141">Svg.ts:141</a></li>
 								</ul>
 							</aside>
 						</section>
@@ -2097,7 +2097,7 @@ <h3>stroke-<wbr>linejoin</h3>
 							<div class="tsd-signature tsd-kind-icon">stroke-<wbr>linejoin<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;bevel&quot;</span></div>
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L136">Svg.ts:136</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L140">Svg.ts:140</a></li>
 								</ul>
 							</aside>
 						</section>
@@ -2107,7 +2107,7 @@ <h3>stroke-<wbr>width</h3>
 							<div class="tsd-signature tsd-kind-icon">stroke-<wbr>width<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;1</span></div>
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L135">Svg.ts:135</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L139">Svg.ts:139</a></li>
 								</ul>
 							</aside>
 						</section>
@@ -2117,7 +2117,7 @@ <h3>stroked</h3>
 							<div class="tsd-signature tsd-kind-icon">stroked<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;true</span></div>
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L132">Svg.ts:132</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L136">Svg.ts:136</a></li>
 								</ul>
 							</aside>
 						</section>
@@ -2158,6 +2158,9 @@ <h3>stroked</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -2179,6 +2182,9 @@ <h3>stroked</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/classes/_svg_.svgspace.html b/docs/classes/_svg_.svgspace.html
index 57d5154e..033ace1f 100644
--- a/docs/classes/_svg_.svgspace.html
+++ b/docs/classes/_svg_.svgspace.html
@@ -202,7 +202,7 @@ <h3>constructor</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#constructor">constructor</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L18">Svg.ts:18</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L22">Svg.ts:22</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -248,7 +248,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _auto<wbr>Resize</h
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#_autoresize">_autoResize</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L29">Dom.ts:29</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L33">Dom.ts:33</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -259,7 +259,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _bgcolor</h3>
 					<aside class="tsd-sources">
 						<p>Overrides <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#_bgcolor">_bgcolor</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L18">Svg.ts:18</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L22">Svg.ts:22</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -271,7 +271,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _canvas</h3>
 						<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#_canvas">_canvas</a></p>
 						<p>Overrides <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_canvas">_canvas</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L25">Dom.ts:25</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L29">Dom.ts:29</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -282,7 +282,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _container</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#_container">_container</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L26">Dom.ts:26</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L30">Dom.ts:30</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -293,7 +293,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _css</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#_css">_css</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L31">Dom.ts:31</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L35">Dom.ts:35</a></li>
 						</ul>
 					</aside>
 					<div class="tsd-type-declaration">
@@ -309,7 +309,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _ctx</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#_ctx">_ctx</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L47">Space.ts:47</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L47">Space.ts:47</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -320,7 +320,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _dragged</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_dragged">_dragged</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L307">Space.ts:307</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L307">Space.ts:307</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -331,7 +331,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _has<wbr>Mouse</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_hasmouse">_hasMouse</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L309">Space.ts:309</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L309">Space.ts:309</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -342,7 +342,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _has<wbr>Touch</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_hastouch">_hasTouch</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L310">Space.ts:310</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L310">Space.ts:310</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -353,7 +353,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _is<wbr>Ready</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#_isready">_isReady</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L57">Space.ts:57</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L57">Space.ts:57</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -364,7 +364,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _playing</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#_playing">_playing</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L58">Space.ts:58</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L58">Space.ts:58</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -375,7 +375,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _pointer</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#_pointer">_pointer</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L55">Space.ts:55</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L55">Space.ts:55</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -386,7 +386,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _pressed</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_pressed">_pressed</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L306">Space.ts:306</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L306">Space.ts:306</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -397,7 +397,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> bound</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#bound">bound</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L42">Space.ts:42</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L42">Space.ts:42</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -408,7 +408,7 @@ <h3>id</h3>
 					<aside class="tsd-sources">
 						<p>Overrides <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#id">id</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L17">Svg.ts:17</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L21">Svg.ts:21</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -419,7 +419,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> player<wbr>Count</h
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#playercount">playerCount</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L46">Space.ts:46</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L46">Space.ts:46</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -430,7 +430,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> players</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#players">players</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L45">Space.ts:45</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L45">Space.ts:45</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -449,7 +449,7 @@ <h3>auto<wbr>Resize</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#autoresize">autoResize</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L158">Dom.ts:158</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L162">Dom.ts:162</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -463,7 +463,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#autoresize">autoResize</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L148">Dom.ts:148</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L152">Dom.ts:152</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -498,7 +498,7 @@ <h3>background</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#background">background</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L242">Dom.ts:242</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L246">Dom.ts:246</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -512,7 +512,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</s
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#background">background</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L238">Dom.ts:238</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L242">Dom.ts:242</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -546,7 +546,7 @@ <h3>center</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#center">center</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L260">Space.ts:260</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L260">Space.ts:260</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -570,7 +570,7 @@ <h3>custom<wbr>Rendering</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#customrendering">customRendering</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L230">Space.ts:230</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L230">Space.ts:230</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -605,7 +605,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">null</spa
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#customrendering">customRendering</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L229">Space.ts:229</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L229">Space.ts:229</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -655,7 +655,7 @@ <h3>element</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#element">element</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L48">Svg.ts:48</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L52">Svg.ts:52</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -678,7 +678,7 @@ <h3>height</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#height">height</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L272">Space.ts:272</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L272">Space.ts:272</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -701,7 +701,7 @@ <h3>inner<wbr>Bound</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#innerbound">innerBound</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L248">Space.ts:248</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L248">Space.ts:248</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -724,7 +724,7 @@ <h3>is<wbr>Playing</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#isplaying">isPlaying</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L236">Space.ts:236</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L236">Space.ts:236</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -747,7 +747,7 @@ <h3>outer<wbr>Bound</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#outerbound">outerBound</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L242">Space.ts:242</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L242">Space.ts:242</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -770,7 +770,7 @@ <h3>parent</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#parent">parent</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L212">Dom.ts:212</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L216">Dom.ts:216</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -793,7 +793,7 @@ <h3>pointer</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#pointer">pointer</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L318">Space.ts:318</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L318">Space.ts:318</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -816,7 +816,7 @@ <h3>ready</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#ready">ready</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L220">Dom.ts:220</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L224">Dom.ts:224</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -839,7 +839,7 @@ <h3>size</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#size">size</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L254">Space.ts:254</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L254">Space.ts:254</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -862,7 +862,7 @@ <h3>width</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#width">width</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L266">Space.ts:266</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L266">Space.ts:266</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -888,7 +888,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Action</
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_mouseaction">_mouseAction</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L416">Space.ts:416</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L416">Space.ts:416</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -926,7 +926,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Down</h3
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_mousedown">_mouseDown</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L451">Space.ts:451</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L451">Space.ts:451</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -957,7 +957,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Move</h3
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_mousemove">_mouseMove</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L475">Space.ts:475</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L475">Space.ts:475</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -988,7 +988,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Out</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_mouseout">_mouseOut</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L499">Space.ts:499</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L499">Space.ts:499</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1019,7 +1019,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Over</h3
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_mouseover">_mouseOver</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L489">Space.ts:489</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L489">Space.ts:489</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1050,7 +1050,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _mouse<wbr>Up</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_mouseup">_mouseUp</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L462">Space.ts:462</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L462">Space.ts:462</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1081,7 +1081,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _resize<wbr>Handler
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#_resizehandler">_resizeHandler</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L186">Dom.ts:186</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L190">Dom.ts:190</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1112,7 +1112,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _touch<wbr>Move</h3
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#_touchmove">_touchMove</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L511">Space.ts:511</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L511">Space.ts:511</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1143,7 +1143,7 @@ <h3>add</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#add">add</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L80">Space.ts:80</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L80">Space.ts:80</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1179,7 +1179,7 @@ <h3>bind<wbr>Canvas</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#bindcanvas">bindCanvas</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L329">Space.ts:329</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L329">Space.ts:329</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1217,7 +1217,7 @@ <h3>bind<wbr>Mouse</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#bindmouse">bindMouse</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L349">Space.ts:349</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L349">Space.ts:349</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1254,7 +1254,7 @@ <h3>bind<wbr>Touch</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#bindtouch">bindTouch</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L374">Space.ts:374</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L374">Space.ts:374</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1292,7 +1292,7 @@ <h3>clear</h3>
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#clear">clear</a></p>
 								<p>Overrides <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#clear">clear</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L227">Dom.ts:227</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L231">Dom.ts:231</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1324,7 +1324,7 @@ <h3>get<wbr>Form</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#getform">getForm</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L42">Svg.ts:42</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L46">Svg.ts:46</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1352,7 +1352,7 @@ <h3>pause</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#pause">pause</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L181">Space.ts:181</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L181">Space.ts:181</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1384,7 +1384,7 @@ <h3>play</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#play">play</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L121">Space.ts:121</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L121">Space.ts:121</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1417,7 +1417,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> play<wbr>Items</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#playitems">playItems</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L155">Space.ts:155</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L155">Space.ts:155</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1449,7 +1449,7 @@ <h3>play<wbr>Once</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#playonce">playOnce</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L210">Space.ts:210</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L210">Space.ts:210</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1481,7 +1481,7 @@ <h3>refresh</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#refresh">refresh</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L65">Space.ts:65</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L65">Space.ts:65</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1513,7 +1513,7 @@ <h3>remove</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#remove">remove</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L96">Svg.ts:96</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L100">Svg.ts:100</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1542,7 +1542,7 @@ <h3>remove<wbr>All</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#removeall">removeAll</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L110">Svg.ts:110</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L114">Svg.ts:114</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1565,7 +1565,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> render</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#render">render</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L220">Space.ts:220</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L220">Space.ts:220</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1597,7 +1597,7 @@ <h3>replay</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#replay">replay</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L145">Space.ts:145</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L145">Space.ts:145</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1621,7 +1621,7 @@ <h3>resize</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#resize">resize</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L57">Svg.ts:57</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L61">Svg.ts:61</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1659,7 +1659,7 @@ <h3>resume</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#resume">resume</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L190">Space.ts:190</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L190">Space.ts:190</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1682,7 +1682,7 @@ <h3>setup</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#setup">setup</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L126">Dom.ts:126</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L130">Dom.ts:130</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1733,7 +1733,7 @@ <h3>stop</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#stop">stop</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L200">Space.ts:200</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L200">Space.ts:200</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1765,7 +1765,7 @@ <h3>style</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#style">style</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L251">Dom.ts:251</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L255">Dom.ts:255</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1809,7 +1809,7 @@ <h3>styles</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#styles">styles</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L264">Dom.ts:264</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L268">Dom.ts:268</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1848,7 +1848,7 @@ <h3>touches<wbr>ToPoints</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#touchestopoints">touchesToPoints</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L400">Space.ts:400</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L400">Space.ts:400</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1887,7 +1887,7 @@ <h3>unbind<wbr>Canvas</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_space_.multitouchspace.html">MultiTouchSpace</a>.<a href="_space_.multitouchspace.html#unbindcanvas">unbindCanvas</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L339">Space.ts:339</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L339">Space.ts:339</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1925,7 +1925,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> create<wbr>Element</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#createelement">createElement</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L82">Dom.ts:82</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L86">Dom.ts:86</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -1969,7 +1969,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> get<wbr>Inline<wbr>Styles
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#getinlinestyles">getInlineStyles</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L294">Dom.ts:294</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L298">Dom.ts:298</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2006,7 +2006,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> set<wbr>Attr</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_dom_.domspace.html">DOMSpace</a>.<a href="_dom_.domspace.html#setattr">setAttr</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L278">Dom.ts:278</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L282">Dom.ts:282</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2044,7 +2044,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> svg<wbr>Element</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Svg.ts#L76">Svg.ts:76</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Svg.ts#L80">Svg.ts:80</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -2087,7 +2087,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _time</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_space_.space.html">Space</a>.<a href="_space_.space.html#_time">_time</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L44">Space.ts:44</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L44">Space.ts:44</a></li>
 						</ul>
 					</aside>
 					<section class="tsd-panel tsd-member tsd-kind-variable tsd-parent-kind-object-literal">
@@ -2096,7 +2096,7 @@ <h3>diff</h3>
 						<div class="tsd-signature tsd-kind-icon">diff<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L44">Space.ts:44</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L44">Space.ts:44</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -2106,7 +2106,7 @@ <h3>end</h3>
 						<div class="tsd-signature tsd-kind-icon">end<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;-1</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L44">Space.ts:44</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L44">Space.ts:44</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -2116,7 +2116,7 @@ <h3>prev</h3>
 						<div class="tsd-signature tsd-kind-icon">prev<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L44">Space.ts:44</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L44">Space.ts:44</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -2156,6 +2156,9 @@ <h3>prev</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -2177,6 +2180,9 @@ <h3>prev</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/classes/_typography_.typography.html b/docs/classes/_typography_.typography.html
index 1f059b70..8f1a30a3 100644
--- a/docs/classes/_typography_.typography.html
+++ b/docs/classes/_typography_.typography.html
@@ -92,6 +92,7 @@ <h2>Index</h2>
 							<h3>Methods</h3>
 							<ul class="tsd-index-list">
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_typography_.typography.html#fontsizetobox" class="tsd-kind-icon">font<wbr>Size<wbr>ToBox</a></li>
+								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_typography_.typography.html#fontsizetothreshold" class="tsd-kind-icon">font<wbr>Size<wbr>ToThreshold</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_typography_.typography.html#textwidthestimator" class="tsd-kind-icon">text<wbr>Width<wbr>Estimator</a></li>
 								<li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="_typography_.typography.html#truncate" class="tsd-kind-icon">truncate</a></li>
 							</ul>
@@ -105,13 +106,13 @@ <h2>Methods</h2>
 					<a name="fontsizetobox" class="tsd-anchor"></a>
 					<h3><span class="tsd-flag ts-flagStatic">Static</span> font<wbr>Size<wbr>ToBox</h3>
 					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-static">
-						<li class="tsd-signature tsd-kind-icon">font<wbr>Size<wbr>ToBox<span class="tsd-signature-symbol">(</span>box<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a>, ratio<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">(Anonymous function)</span></li>
+						<li class="tsd-signature tsd-kind-icon">font<wbr>Size<wbr>ToBox<span class="tsd-signature-symbol">(</span>box<span class="tsd-signature-symbol">: </span><a href="../modules/_pt_.html#grouplike" class="tsd-signature-type">GroupLike</a>, ratio<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span>, byHeight<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span></li>
 					</ul>
 					<ul class="tsd-descriptions">
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Typography.ts#L44">Typography.ts:44</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Typography.ts#L48">Typography.ts:48</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -133,9 +134,89 @@ <h5><span class="tsd-flag ts-flagDefault value">Default value</span> ratio: <spa
 										<p>font-size change ratio. Default is 1.</p>
 									</div>
 								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> byHeight: <span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol"> =&nbsp;true</span></h5>
+								</li>
 							</ul>
-							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">(Anonymous function)</span></h4>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">function</span></h4>
 							<p>a function where input parameter is a new box, and returns the new font size value</p>
+							<ul class="tsd-parameters">
+								<li class="tsd-parameter-siganture">
+									<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+										<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>GroupLike<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+									</ul>
+									<ul class="tsd-descriptions">
+										<li class="tsd-description">
+											<h4 class="tsd-parameters-title">Parameters</h4>
+											<ul class="tsd-parameters">
+												<li>
+													<h5>GroupLike: <span class="tsd-signature-type">any</span></h5>
+												</li>
+											</ul>
+											<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+										</li>
+									</ul>
+								</li>
+							</ul>
+						</li>
+					</ul>
+				</section>
+				<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-static">
+					<a name="fontsizetothreshold" class="tsd-anchor"></a>
+					<h3><span class="tsd-flag ts-flagStatic">Static</span> font<wbr>Size<wbr>ToThreshold</h3>
+					<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-static">
+						<li class="tsd-signature tsd-kind-icon">font<wbr>Size<wbr>ToThreshold<span class="tsd-signature-symbol">(</span>threshold<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, direction<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span></li>
+					</ul>
+					<ul class="tsd-descriptions">
+						<li class="tsd-description">
+							<aside class="tsd-sources">
+								<ul>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Typography.ts#L66">Typography.ts:66</a></li>
+								</ul>
+							</aside>
+							<div class="tsd-comment tsd-typography">
+								<div class="lead">
+									<p>Get a function to scale font size based on a threshold value</p>
+								</div>
+							</div>
+							<h4 class="tsd-parameters-title">Parameters</h4>
+							<ul class="tsd-parameters">
+								<li>
+									<h5>threshold: <span class="tsd-signature-type">number</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>threshold value</p>
+									</div>
+								</li>
+								<li>
+									<h5><span class="tsd-flag ts-flagDefault value">Default value</span> direction: <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></h5>
+									<div class="tsd-comment tsd-typography">
+										<p>if negative, get a font size &lt;= defaultSize; if positive, get a font size &gt;= defaultSize; Default is 0 which will scale font without min or max limits.</p>
+									</div>
+								</li>
+							</ul>
+							<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">function</span></h4>
+							<p>a function where input parameter is the default font size and a value to compare with threshold, and returns new font size value</p>
+							<ul class="tsd-parameters">
+								<li class="tsd-parameter-siganture">
+									<ul class="tsd-signatures tsd-kind-type-literal tsd-is-not-exported">
+										<li class="tsd-signature tsd-kind-icon"><span class="tsd-signature-symbol">(</span>a<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, b<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li>
+									</ul>
+									<ul class="tsd-descriptions">
+										<li class="tsd-description">
+											<h4 class="tsd-parameters-title">Parameters</h4>
+											<ul class="tsd-parameters">
+												<li>
+													<h5>a: <span class="tsd-signature-type">number</span></h5>
+												</li>
+												<li>
+													<h5>b: <span class="tsd-signature-type">number</span></h5>
+												</li>
+											</ul>
+											<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4>
+										</li>
+									</ul>
+								</li>
+							</ul>
 						</li>
 					</ul>
 				</section>
@@ -149,7 +230,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> text<wbr>Width<wbr>Estima
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Typography.ts#L13">Typography.ts:13</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Typography.ts#L17">Typography.ts:17</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -229,7 +310,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> truncate</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Typography.ts#L27">Typography.ts:27</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Typography.ts#L31">Typography.ts:31</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -321,6 +402,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-symbol">[</span
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -342,6 +426,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-symbol">[</span
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
@@ -354,6 +441,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-symbol">[</span
 							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-static">
 								<a href="_typography_.typography.html#fontsizetobox" class="tsd-kind-icon">font<wbr>Size<wbr>ToBox</a>
 							</li>
+							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-static">
+								<a href="_typography_.typography.html#fontsizetothreshold" class="tsd-kind-icon">font<wbr>Size<wbr>ToThreshold</a>
+							</li>
 							<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-static">
 								<a href="_typography_.typography.html#textwidthestimator" class="tsd-kind-icon">text<wbr>Width<wbr>Estimator</a>
 							</li>
diff --git a/docs/classes/_ui_.ui.html b/docs/classes/_ui_.ui.html
index 662559bc..28007d6f 100644
--- a/docs/classes/_ui_.ui.html
+++ b/docs/classes/_ui_.ui.html
@@ -134,7 +134,7 @@ <h3>constructor</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L29">UI.ts:29</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L33">UI.ts:33</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -170,7 +170,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _actions</h3>
 					<div class="tsd-signature tsd-kind-icon">_actions<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">object</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L28">UI.ts:28</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L32">UI.ts:32</a></li>
 						</ul>
 					</aside>
 					<div class="tsd-type-declaration">
@@ -188,7 +188,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _id</h3>
 					<div class="tsd-signature tsd-kind-icon">_id<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L27">UI.ts:27</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L31">UI.ts:31</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -198,7 +198,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _states</h3>
 					<div class="tsd-signature tsd-kind-icon">_states<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">object</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L29">UI.ts:29</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L33">UI.ts:33</a></li>
 						</ul>
 					</aside>
 					<div class="tsd-type-declaration">
@@ -216,7 +216,7 @@ <h3>group</h3>
 					<div class="tsd-signature tsd-kind-icon">group<span class="tsd-signature-symbol">:</span> <a href="_pt_.group.html" class="tsd-signature-type">Group</a></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L24">UI.ts:24</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L28">UI.ts:28</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -226,7 +226,7 @@ <h3>shape</h3>
 					<div class="tsd-signature tsd-kind-icon">shape<span class="tsd-signature-symbol">:</span> <a href="../enums/_ui_.uishape.html" class="tsd-signature-type">UIShape</a></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L25">UI.ts:25</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L29">UI.ts:29</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -244,7 +244,7 @@ <h3>id</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L47">UI.ts:47</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L51">UI.ts:51</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -257,7 +257,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</s
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L48">UI.ts:48</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L52">UI.ts:52</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -288,7 +288,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _trigger</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L111">UI.ts:111</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L115">UI.ts:115</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -319,7 +319,7 @@ <h3>listen</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L87">UI.ts:87</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L91">UI.ts:91</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -356,7 +356,7 @@ <h3>off</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L76">UI.ts:76</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L80">UI.ts:80</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -387,7 +387,7 @@ <h3>on</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L65">UI.ts:65</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L69">UI.ts:69</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -424,7 +424,7 @@ <h3>render</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L102">UI.ts:102</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L106">UI.ts:106</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -481,7 +481,7 @@ <h3>state</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L55">UI.ts:55</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L59">UI.ts:59</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -537,6 +537,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">any</span
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -558,6 +561,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">any</span
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/classes/_ui_.uibutton.html b/docs/classes/_ui_.uibutton.html
index eced5bf9..e5623327 100644
--- a/docs/classes/_ui_.uibutton.html
+++ b/docs/classes/_ui_.uibutton.html
@@ -146,7 +146,7 @@ <h3>constructor</h3>
 							<aside class="tsd-sources">
 								<p>Overrides <a href="_ui_.ui.html">UI</a>.<a href="_ui_.ui.html#constructor">constructor</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L134">UI.ts:134</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L138">UI.ts:138</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -178,7 +178,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _actions</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_ui_.ui.html">UI</a>.<a href="_ui_.ui.html#_actions">_actions</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L28">UI.ts:28</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L32">UI.ts:32</a></li>
 						</ul>
 					</aside>
 					<div class="tsd-type-declaration">
@@ -196,7 +196,7 @@ <h3>_clicks</h3>
 					<div class="tsd-signature tsd-kind-icon">_clicks<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L134">UI.ts:134</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L138">UI.ts:138</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -207,7 +207,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _id</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_ui_.ui.html">UI</a>.<a href="_ui_.ui.html#_id">_id</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L27">UI.ts:27</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L31">UI.ts:31</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -218,7 +218,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _states</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_ui_.ui.html">UI</a>.<a href="_ui_.ui.html#_states">_states</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L29">UI.ts:29</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L33">UI.ts:33</a></li>
 						</ul>
 					</aside>
 					<div class="tsd-type-declaration">
@@ -237,7 +237,7 @@ <h3>group</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_ui_.ui.html">UI</a>.<a href="_ui_.ui.html#group">group</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L24">UI.ts:24</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L28">UI.ts:28</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -248,7 +248,7 @@ <h3>shape</h3>
 					<aside class="tsd-sources">
 						<p>Inherited from <a href="_ui_.ui.html">UI</a>.<a href="_ui_.ui.html#shape">shape</a></p>
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L25">UI.ts:25</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L29">UI.ts:29</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -265,7 +265,7 @@ <h3>clicks</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L144">UI.ts:144</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L148">UI.ts:148</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -289,7 +289,7 @@ <h3>id</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_ui_.ui.html">UI</a>.<a href="_ui_.ui.html#id">id</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L47">UI.ts:47</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L51">UI.ts:51</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -303,7 +303,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</s
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_ui_.ui.html">UI</a>.<a href="_ui_.ui.html#id">id</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L48">UI.ts:48</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L52">UI.ts:52</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -335,7 +335,7 @@ <h3><span class="tsd-flag ts-flagProtected">Protected</span> _trigger</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_ui_.ui.html">UI</a>.<a href="_ui_.ui.html#_trigger">_trigger</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L111">UI.ts:111</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L115">UI.ts:115</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -367,7 +367,7 @@ <h3>listen</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_ui_.ui.html">UI</a>.<a href="_ui_.ui.html#listen">listen</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L87">UI.ts:87</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L91">UI.ts:91</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -405,7 +405,7 @@ <h3>off</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_ui_.ui.html">UI</a>.<a href="_ui_.ui.html#off">off</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L76">UI.ts:76</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L80">UI.ts:80</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -437,7 +437,7 @@ <h3>on</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_ui_.ui.html">UI</a>.<a href="_ui_.ui.html#on">on</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L65">UI.ts:65</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L69">UI.ts:69</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -474,7 +474,7 @@ <h3>on<wbr>Click</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L151">UI.ts:151</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L155">UI.ts:155</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -505,7 +505,7 @@ <h3>on<wbr>Hover</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L162">UI.ts:162</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L166">UI.ts:166</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -543,7 +543,7 @@ <h3>render</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_ui_.ui.html">UI</a>.<a href="_ui_.ui.html#render">render</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L102">UI.ts:102</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L106">UI.ts:106</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -601,7 +601,7 @@ <h3>state</h3>
 							<aside class="tsd-sources">
 								<p>Inherited from <a href="_ui_.ui.html">UI</a>.<a href="_ui_.ui.html#state">state</a></p>
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L55">UI.ts:55</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L59">UI.ts:59</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -657,6 +657,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">any</span
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -678,6 +681,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">any</span
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/classes/_util_.util.html b/docs/classes/_util_.util.html
index 365169e3..5d9c3922 100644
--- a/docs/classes/_util_.util.html
+++ b/docs/classes/_util_.util.html
@@ -119,7 +119,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> warn<wbr>Level</h3>
 					<div class="tsd-signature tsd-kind-icon">warn<wbr>Level<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">"error"</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">"warn"</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">"default"</span><span class="tsd-signature-symbol"> =&nbsp;&quot;default&quot;</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L94">Util.ts:94</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L94">Util.ts:94</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -136,7 +136,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> combine</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L193">Util.ts:193</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L193">Util.ts:193</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -206,7 +206,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> flatten</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L181">Util.ts:181</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L181">Util.ts:181</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -243,7 +243,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> for<wbr>Range</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L249">Util.ts:249</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L249">Util.ts:249</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -305,7 +305,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> get<wbr>Args</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L100">Util.ts:100</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L100">Util.ts:100</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -336,7 +336,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> random<wbr>Int</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L145">Util.ts:145</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L145">Util.ts:145</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -362,7 +362,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> split</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L156">Util.ts:156</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L156">Util.ts:156</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -411,7 +411,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> stepper</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L230">Util.ts:230</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L230">Util.ts:230</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -496,7 +496,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> warn</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L134">Util.ts:134</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L134">Util.ts:134</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -533,7 +533,7 @@ <h3><span class="tsd-flag ts-flagStatic">Static</span> zip</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L208">Util.ts:208</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L208">Util.ts:208</a></li>
 								</ul>
 							</aside>
 							<div class="tsd-comment tsd-typography">
@@ -589,6 +589,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">any</span
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -610,6 +613,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">any</span
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/enums/_ui_.uishape.html b/docs/enums/_ui_.uishape.html
index 86276cde..10f3d6ad 100644
--- a/docs/enums/_ui_.uishape.html
+++ b/docs/enums/_ui_.uishape.html
@@ -101,7 +101,7 @@ <h3>Circle</h3>
 					<div class="tsd-signature tsd-kind-icon">Circle<span class="tsd-signature-symbol">:</span> </div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L9">UI.ts:9</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L13">UI.ts:13</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -111,7 +111,7 @@ <h3>Line</h3>
 					<div class="tsd-signature tsd-kind-icon">Line<span class="tsd-signature-symbol">:</span> </div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L9">UI.ts:9</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L13">UI.ts:13</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -121,7 +121,7 @@ <h3>Polygon</h3>
 					<div class="tsd-signature tsd-kind-icon">Polygon<span class="tsd-signature-symbol">:</span> </div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L9">UI.ts:9</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L13">UI.ts:13</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -131,7 +131,7 @@ <h3>Polyline</h3>
 					<div class="tsd-signature tsd-kind-icon">Polyline<span class="tsd-signature-symbol">:</span> </div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L9">UI.ts:9</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L13">UI.ts:13</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -141,7 +141,7 @@ <h3>Rectangle</h3>
 					<div class="tsd-signature tsd-kind-icon">Rectangle<span class="tsd-signature-symbol">:</span> </div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L9">UI.ts:9</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L13">UI.ts:13</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -180,6 +180,9 @@ <h3>Rectangle</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -201,6 +204,9 @@ <h3>Rectangle</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/index.html b/docs/index.html
index 65f71224..cc71fce7 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -79,6 +79,7 @@ <h3>External modules</h3>
 								<li class="tsd-kind-external-module"><a href="modules/_linearalgebra_.html" class="tsd-kind-icon">"<wbr>Linear<wbr>Algebra"</a></li>
 								<li class="tsd-kind-external-module"><a href="modules/_num_.html" class="tsd-kind-icon">"<wbr>Num"</a></li>
 								<li class="tsd-kind-external-module"><a href="modules/_op_.html" class="tsd-kind-icon">"<wbr>Op"</a></li>
+								<li class="tsd-kind-external-module"><a href="modules/_physics_.html" class="tsd-kind-icon">"<wbr>Physics"</a></li>
 								<li class="tsd-kind-external-module"><a href="modules/_pt_.html" class="tsd-kind-icon">"<wbr>Pt"</a></li>
 								<li class="tsd-kind-external-module"><a href="modules/_space_.html" class="tsd-kind-icon">"<wbr>Space"</a></li>
 								<li class="tsd-kind-external-module"><a href="modules/_svg_.html" class="tsd-kind-icon">"<wbr>Svg"</a></li>
@@ -86,6 +87,7 @@ <h3>External modules</h3>
 								<li class="tsd-kind-external-module"><a href="modules/_ui_.html" class="tsd-kind-icon">"UI"</a></li>
 								<li class="tsd-kind-external-module"><a href="modules/_util_.html" class="tsd-kind-icon">"<wbr>Util"</a></li>
 								<li class="tsd-kind-external-module"><a href="modules/__lib_.html" class="tsd-kind-icon">"_<wbr>lib"</a></li>
+								<li class="tsd-kind-external-module"><a href="modules/__module_.html" class="tsd-kind-icon">"_<wbr>module"</a></li>
 							</ul>
 						</section>
 					</div>
@@ -125,6 +127,9 @@ <h3>External modules</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -146,6 +151,9 @@ <h3>External modules</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
@@ -225,7 +233,6 @@ <h2>Legend</h2>
 	(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
 	m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
 	})(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
-
 	ga('create', 'UA-104913373-1', 'auto');
 	ga('send', 'pageview');
 </script>
diff --git a/docs/interfaces/_canvas_.ptscanvasrenderingcontext2d.html b/docs/interfaces/_canvas_.ptscanvasrenderingcontext2d.html
index 50b9f2bc..3a391ab1 100644
--- a/docs/interfaces/_canvas_.ptscanvasrenderingcontext2d.html
+++ b/docs/interfaces/_canvas_.ptscanvasrenderingcontext2d.html
@@ -212,7 +212,7 @@ <h3><span class="tsd-flag ts-flagOptional">Optional</span> backing<wbr>Store<wbr
 					<div class="tsd-signature tsd-kind-icon">backing<wbr>Store<wbr>Pixel<wbr>Ratio<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L19">Canvas.ts:19</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L19">Canvas.ts:19</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -359,7 +359,7 @@ <h3><span class="tsd-flag ts-flagOptional">Optional</span> moz<wbr>Backing<wbr>S
 					<div class="tsd-signature tsd-kind-icon">moz<wbr>Backing<wbr>Store<wbr>Pixel<wbr>Ratio<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L16">Canvas.ts:16</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L16">Canvas.ts:16</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -380,7 +380,7 @@ <h3><span class="tsd-flag ts-flagOptional">Optional</span> ms<wbr>Backing<wbr>St
 					<div class="tsd-signature tsd-kind-icon">ms<wbr>Backing<wbr>Store<wbr>Pixel<wbr>Ratio<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L17">Canvas.ts:17</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L17">Canvas.ts:17</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -401,7 +401,7 @@ <h3><span class="tsd-flag ts-flagOptional">Optional</span> o<wbr>Backing<wbr>Sto
 					<div class="tsd-signature tsd-kind-icon">o<wbr>Backing<wbr>Store<wbr>Pixel<wbr>Ratio<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L18">Canvas.ts:18</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L18">Canvas.ts:18</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -499,7 +499,7 @@ <h3><span class="tsd-flag ts-flagOptional">Optional</span> webkit<wbr>Backing<wb
 					<div class="tsd-signature tsd-kind-icon">webkit<wbr>Backing<wbr>Store<wbr>Pixel<wbr>Ratio<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Canvas.ts#L15">Canvas.ts:15</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Canvas.ts#L15">Canvas.ts:15</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -1880,6 +1880,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">Object</s
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -1901,6 +1904,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">Object</s
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/interfaces/_pt_.ipt.html b/docs/interfaces/_pt_.ipt.html
index 8005d80e..9c3677e5 100644
--- a/docs/interfaces/_pt_.ipt.html
+++ b/docs/interfaces/_pt_.ipt.html
@@ -83,6 +83,7 @@ <h3>Implemented by</h3>
 					<li><a href="../classes/_bound_.bound.html" class="tsd-signature-type">Bound</a></li>
 					<li><a href="../classes/_color_.color.html" class="tsd-signature-type">Color</a></li>
 					<li><a href="../classes/_create_.noise.html" class="tsd-signature-type">Noise</a></li>
+					<li><a href="../classes/_physics_.particle.html" class="tsd-signature-type">Particle</a></li>
 					<li><a href="../classes/_pt_.pt.html" class="tsd-signature-type">Pt</a></li>
 				</ul>
 			</section>
@@ -110,7 +111,7 @@ <h3><span class="tsd-flag ts-flagOptional">Optional</span> w</h3>
 					<div class="tsd-signature tsd-kind-icon">w<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L14">Pt.ts:14</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L14">Pt.ts:14</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -120,7 +121,7 @@ <h3><span class="tsd-flag ts-flagOptional">Optional</span> x</h3>
 					<div class="tsd-signature tsd-kind-icon">x<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L11">Pt.ts:11</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L11">Pt.ts:11</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -130,7 +131,7 @@ <h3><span class="tsd-flag ts-flagOptional">Optional</span> y</h3>
 					<div class="tsd-signature tsd-kind-icon">y<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L12">Pt.ts:12</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L12">Pt.ts:12</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -140,7 +141,7 @@ <h3><span class="tsd-flag ts-flagOptional">Optional</span> z</h3>
 					<div class="tsd-signature tsd-kind-icon">z<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L13">Pt.ts:13</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L13">Pt.ts:13</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -179,6 +180,9 @@ <h3><span class="tsd-flag ts-flagOptional">Optional</span> z</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class="current tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -200,6 +204,9 @@ <h3><span class="tsd-flag ts-flagOptional">Optional</span> z</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/interfaces/_space_.iplayer.html b/docs/interfaces/_space_.iplayer.html
index f9787749..6d54e7c3 100644
--- a/docs/interfaces/_space_.iplayer.html
+++ b/docs/interfaces/_space_.iplayer.html
@@ -114,7 +114,7 @@ <h3><span class="tsd-flag ts-flagOptional">Optional</span> animate</h3>
 					<div class="tsd-signature tsd-kind-icon">animate<span class="tsd-signature-symbol">:</span> <a href="../modules/_space_.html#animatefunction" class="tsd-signature-type">AnimateFunction</a></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L18">Space.ts:18</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L18">Space.ts:18</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -124,7 +124,7 @@ <h3><span class="tsd-flag ts-flagOptional">Optional</span> animateID</h3>
 					<div class="tsd-signature tsd-kind-icon">animateID<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L17">Space.ts:17</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L17">Space.ts:17</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -141,7 +141,7 @@ <h3><span class="tsd-flag ts-flagOptional">Optional</span> action</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L20">Space.ts:20</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L20">Space.ts:20</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -173,7 +173,7 @@ <h3><span class="tsd-flag ts-flagOptional">Optional</span> resize</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L19">Space.ts:19</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L19">Space.ts:19</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -199,7 +199,7 @@ <h3><span class="tsd-flag ts-flagOptional">Optional</span> start</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L21">Space.ts:21</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L21">Space.ts:21</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -250,6 +250,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">any</span
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -271,6 +274,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">any</span
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/interfaces/_space_.ispaceplayers.html b/docs/interfaces/_space_.ispaceplayers.html
index 618473ba..2ee4a5b2 100644
--- a/docs/interfaces/_space_.ispaceplayers.html
+++ b/docs/interfaces/_space_.ispaceplayers.html
@@ -115,6 +115,9 @@ <h3 class="tsd-before-signature">Indexable</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -136,6 +139,9 @@ <h3 class="tsd-before-signature">Indexable</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/interfaces/_space_.itimer.html b/docs/interfaces/_space_.itimer.html
index b9820b0a..4e4e934c 100644
--- a/docs/interfaces/_space_.itimer.html
+++ b/docs/interfaces/_space_.itimer.html
@@ -100,7 +100,7 @@ <h3>diff</h3>
 					<div class="tsd-signature tsd-kind-icon">diff<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L30">Space.ts:30</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L30">Space.ts:30</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -110,7 +110,7 @@ <h3>end</h3>
 					<div class="tsd-signature tsd-kind-icon">end<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L31">Space.ts:31</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L31">Space.ts:31</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -120,7 +120,7 @@ <h3>prev</h3>
 					<div class="tsd-signature tsd-kind-icon">prev<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L29">Space.ts:29</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L29">Space.ts:29</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -159,6 +159,9 @@ <h3>prev</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -180,6 +183,9 @@ <h3>prev</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/interfaces/_space_.multitouchelement.html b/docs/interfaces/_space_.multitouchelement.html
index b347388f..93f39271 100644
--- a/docs/interfaces/_space_.multitouchelement.html
+++ b/docs/interfaces/_space_.multitouchelement.html
@@ -103,7 +103,7 @@ <h3>add<wbr>Event<wbr>Listener</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L299">Space.ts:299</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L299">Space.ts:299</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -129,7 +129,7 @@ <h3>remove<wbr>Event<wbr>Listener</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L300">Space.ts:300</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L300">Space.ts:300</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -180,6 +180,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">any</span
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -201,6 +204,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">any</span
 					<li class=" tsd-kind-external-module">
 						<a href="../modules/__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="../modules/__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/modules/__lib_.html b/docs/modules/__lib_.html
index f178565d..e17c1948 100644
--- a/docs/modules/__lib_.html
+++ b/docs/modules/__lib_.html
@@ -91,7 +91,7 @@ <h3>namespace</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/_lib.ts#L17">_lib.ts:17</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/_lib.ts#L18">_lib.ts:18</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -139,6 +139,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</spa
 					<li class=" tsd-kind-external-module">
 						<a href="_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -160,6 +163,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</spa
 					<li class="current tsd-kind-external-module">
 						<a href="__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/modules/__module_.html b/docs/modules/__module_.html
new file mode 100644
index 00000000..591514f6
--- /dev/null
+++ b/docs/modules/__module_.html
@@ -0,0 +1,205 @@
+<!doctype html>
+<html class="default no-js">
+<head>
+	<meta charset="utf-8">
+	<meta http-equiv="X-UA-Compatible" content="IE=edge">
+	<title>&quot;_module&quot; | Pts</title>
+	<meta name="description" content="">
+	<meta name="viewport" content="width=device-width, initial-scale=1">
+	<link rel="stylesheet" href="../assets/css/main.css">
+</head>
+<body>
+<header>
+	<div class="tsd-page-toolbar">
+		<div class="container">
+			<div class="table-wrap">
+				<div class="table-cell" id="tsd-search" data-index="../assets/js/search.js" data-base="..">
+					<div class="field">
+						<label for="tsd-search-field" class="tsd-widget search no-caption">Search</label>
+						<input id="tsd-search-field" type="text" />
+					</div>
+					<ul class="results">
+						<li class="state loading">Preparing search index...</li>
+						<li class="state failure">The search index is not available</li>
+					</ul>
+					<a href="../index.html" class="title">Pts</a>
+				</div>
+				<div class="table-cell" id="tsd-widgets">
+					<div id="tsd-filter">
+						<a href="#" class="tsd-widget options no-caption" data-toggle="options">Options</a>
+						<div class="tsd-filter-group">
+							<div class="tsd-select" id="tsd-filter-visibility">
+								<span class="tsd-select-label">All</span>
+								<ul class="tsd-select-list">
+									<li data-value="public">Public</li>
+									<li data-value="protected">Public/Protected</li>
+									<li data-value="private" class="selected">All</li>
+								</ul>
+							</div>
+							<input type="checkbox" id="tsd-filter-inherited" checked />
+							<label class="tsd-widget" for="tsd-filter-inherited">Inherited</label>
+							<input type="checkbox" id="tsd-filter-externals" checked />
+							<label class="tsd-widget" for="tsd-filter-externals">Externals</label>
+							<input type="checkbox" id="tsd-filter-only-exported" />
+							<label class="tsd-widget" for="tsd-filter-only-exported">Only exported</label>
+						</div>
+					</div>
+					<a href="#" class="tsd-widget menu no-caption" data-toggle="menu">Menu</a>
+				</div>
+			</div>
+		</div>
+	</div>
+	<div class="tsd-page-title">
+		<div class="container">
+			<ul class="tsd-breadcrumb">
+				<li>
+					<a href="../index.html">Globals</a>
+				</li>
+				<li>
+					<a href="__module_.html">&quot;_module&quot;</a>
+				</li>
+			</ul>
+			<h1>External module &quot;_module&quot;</h1>
+		</div>
+	</div>
+</header>
+<div class="container container-main">
+	<div class="row">
+		<div class="col-8 col-content">
+		</div>
+		<div class="col-4 col-menu menu-sticky-wrap menu-highlight">
+			<nav class="tsd-navigation primary">
+				<ul>
+					<li class="globals  ">
+						<a href="../index.html"><em>Globals</em></a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_bound_.html">"<wbr>Bound"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_canvas_.html">"<wbr>Canvas"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_color_.html">"<wbr>Color"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_create_.html">"<wbr>Create"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_dom_.html">"<wbr>Dom"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_form_.html">"<wbr>Form"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_linearalgebra_.html">"<wbr>Linear<wbr>Algebra"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_num_.html">"<wbr>Num"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_op_.html">"<wbr>Op"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_physics_.html">"<wbr>Physics"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_pt_.html">"<wbr>Pt"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_space_.html">"<wbr>Space"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_svg_.html">"<wbr>Svg"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_typography_.html">"<wbr>Typography"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_ui_.html">"UI"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_util_.html">"<wbr>Util"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="__lib_.html">"_<wbr>lib"</a>
+					</li>
+					<li class="current tsd-kind-external-module">
+						<a href="__module_.html">"_<wbr>module"</a>
+					</li>
+				</ul>
+			</nav>
+			<nav class="tsd-navigation secondary menu-sticky">
+				<ul class="before-current">
+				</ul>
+			</nav>
+		</div>
+	</div>
+</div>
+<footer class="with-border-bottom">
+	<div class="container">
+		<h2>Legend</h2>
+		<div class="tsd-legend-group">
+			<ul class="tsd-legend">
+				<li class="tsd-kind-module"><span class="tsd-kind-icon">Module</span></li>
+				<li class="tsd-kind-object-literal"><span class="tsd-kind-icon">Object literal</span></li>
+				<li class="tsd-kind-variable"><span class="tsd-kind-icon">Variable</span></li>
+				<li class="tsd-kind-function"><span class="tsd-kind-icon">Function</span></li>
+				<li class="tsd-kind-function tsd-has-type-parameter"><span class="tsd-kind-icon">Function with type parameter</span></li>
+				<li class="tsd-kind-index-signature"><span class="tsd-kind-icon">Index signature</span></li>
+				<li class="tsd-kind-type-alias"><span class="tsd-kind-icon">Type alias</span></li>
+			</ul>
+			<ul class="tsd-legend">
+				<li class="tsd-kind-enum"><span class="tsd-kind-icon">Enumeration</span></li>
+				<li class="tsd-kind-enum-member"><span class="tsd-kind-icon">Enumeration member</span></li>
+				<li class="tsd-kind-property tsd-parent-kind-enum"><span class="tsd-kind-icon">Property</span></li>
+				<li class="tsd-kind-method tsd-parent-kind-enum"><span class="tsd-kind-icon">Method</span></li>
+			</ul>
+			<ul class="tsd-legend">
+				<li class="tsd-kind-interface"><span class="tsd-kind-icon">Interface</span></li>
+				<li class="tsd-kind-interface tsd-has-type-parameter"><span class="tsd-kind-icon">Interface with type parameter</span></li>
+				<li class="tsd-kind-constructor tsd-parent-kind-interface"><span class="tsd-kind-icon">Constructor</span></li>
+				<li class="tsd-kind-property tsd-parent-kind-interface"><span class="tsd-kind-icon">Property</span></li>
+				<li class="tsd-kind-method tsd-parent-kind-interface"><span class="tsd-kind-icon">Method</span></li>
+				<li class="tsd-kind-index-signature tsd-parent-kind-interface"><span class="tsd-kind-icon">Index signature</span></li>
+			</ul>
+			<ul class="tsd-legend">
+				<li class="tsd-kind-class"><span class="tsd-kind-icon">Class</span></li>
+				<li class="tsd-kind-class tsd-has-type-parameter"><span class="tsd-kind-icon">Class with type parameter</span></li>
+				<li class="tsd-kind-constructor tsd-parent-kind-class"><span class="tsd-kind-icon">Constructor</span></li>
+				<li class="tsd-kind-property tsd-parent-kind-class"><span class="tsd-kind-icon">Property</span></li>
+				<li class="tsd-kind-method tsd-parent-kind-class"><span class="tsd-kind-icon">Method</span></li>
+				<li class="tsd-kind-accessor tsd-parent-kind-class"><span class="tsd-kind-icon">Accessor</span></li>
+				<li class="tsd-kind-index-signature tsd-parent-kind-class"><span class="tsd-kind-icon">Index signature</span></li>
+			</ul>
+			<ul class="tsd-legend">
+				<li class="tsd-kind-constructor tsd-parent-kind-class tsd-is-inherited"><span class="tsd-kind-icon">Inherited constructor</span></li>
+				<li class="tsd-kind-property tsd-parent-kind-class tsd-is-inherited"><span class="tsd-kind-icon">Inherited property</span></li>
+				<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><span class="tsd-kind-icon">Inherited method</span></li>
+				<li class="tsd-kind-accessor tsd-parent-kind-class tsd-is-inherited"><span class="tsd-kind-icon">Inherited accessor</span></li>
+			</ul>
+			<ul class="tsd-legend">
+				<li class="tsd-kind-property tsd-parent-kind-class tsd-is-protected"><span class="tsd-kind-icon">Protected property</span></li>
+				<li class="tsd-kind-method tsd-parent-kind-class tsd-is-protected"><span class="tsd-kind-icon">Protected method</span></li>
+				<li class="tsd-kind-accessor tsd-parent-kind-class tsd-is-protected"><span class="tsd-kind-icon">Protected accessor</span></li>
+			</ul>
+			<ul class="tsd-legend">
+				<li class="tsd-kind-property tsd-parent-kind-class tsd-is-private"><span class="tsd-kind-icon">Private property</span></li>
+				<li class="tsd-kind-method tsd-parent-kind-class tsd-is-private"><span class="tsd-kind-icon">Private method</span></li>
+				<li class="tsd-kind-accessor tsd-parent-kind-class tsd-is-private"><span class="tsd-kind-icon">Private accessor</span></li>
+			</ul>
+			<ul class="tsd-legend">
+				<li class="tsd-kind-property tsd-parent-kind-class tsd-is-static"><span class="tsd-kind-icon">Static property</span></li>
+				<li class="tsd-kind-call-signature tsd-parent-kind-class tsd-is-static"><span class="tsd-kind-icon">Static method</span></li>
+			</ul>
+		</div>
+	</div>
+</footer>
+<div class="container tsd-generator">
+	<p>Generated using <a href="http://typedoc.org/" target="_blank">TypeDoc</a></p>
+</div>
+<div class="overlay"></div>
+<script src="../assets/js/main.js"></script>
+<script>if (location.protocol == 'file:') document.write('<script src="../assets/js/search.js"><' + '/script>');</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/docs/modules/_bound_.html b/docs/modules/_bound_.html
index 4d347bb4..c729ad49 100644
--- a/docs/modules/_bound_.html
+++ b/docs/modules/_bound_.html
@@ -113,6 +113,9 @@ <h3>Classes</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -134,6 +137,9 @@ <h3>Classes</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/modules/_canvas_.html b/docs/modules/_canvas_.html
index 3faf9d3e..6af6aa51 100644
--- a/docs/modules/_canvas_.html
+++ b/docs/modules/_canvas_.html
@@ -120,6 +120,9 @@ <h3>Interfaces</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -141,6 +144,9 @@ <h3>Interfaces</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/modules/_color_.html b/docs/modules/_color_.html
index 24b372ca..857d5bb5 100644
--- a/docs/modules/_color_.html
+++ b/docs/modules/_color_.html
@@ -93,7 +93,7 @@ <h3>Color<wbr>Type</h3>
 					<div class="tsd-signature tsd-kind-icon">Color<wbr>Type<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">"rgb"</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">"hsl"</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">"hsb"</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">"lab"</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">"lch"</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">"luv"</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">"xyz"</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Color.ts#L9">Color.ts:9</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Color.ts#L9">Color.ts:9</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -132,6 +132,9 @@ <h3>Color<wbr>Type</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -153,6 +156,9 @@ <h3>Color<wbr>Type</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/modules/_create_.html b/docs/modules/_create_.html
index c9d8c49e..e394359f 100644
--- a/docs/modules/_create_.html
+++ b/docs/modules/_create_.html
@@ -103,7 +103,7 @@ <h3>Delaunay<wbr>Mesh</h3>
 					<div class="tsd-signature tsd-kind-icon">Delaunay<wbr>Mesh<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">object</span><span class="tsd-signature-symbol">[]</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L269">Create.ts:269</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L269">Create.ts:269</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -113,7 +113,7 @@ <h3>Delaunay<wbr>Shape</h3>
 					<div class="tsd-signature tsd-kind-icon">Delaunay<wbr>Shape<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">object</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L268">Create.ts:268</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L268">Create.ts:268</a></li>
 						</ul>
 					</aside>
 					<div class="tsd-comment tsd-typography">
@@ -151,7 +151,7 @@ <h3>grad3</h3>
 					<div class="tsd-signature tsd-kind-icon">grad3<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol"> =&nbsp;[[1,1, 0], [-1,1, 0], [1,-1,0], [-1,-1,0],[1,0, 1], [-1, 0, 1], [1,0,-1], [-1,0,-1],[0, 1,1], [ 0,-1,1], [0,1,-1], [ 0,-1,-1]]</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L153">Create.ts:153</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L153">Create.ts:153</a></li>
 						</ul>
 					</aside>
 					<div class="tsd-comment tsd-typography">
@@ -166,7 +166,7 @@ <h3>perm<wbr>Table</h3>
 					<div class="tsd-signature tsd-kind-icon">perm<wbr>Table<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol"> =&nbsp;[151,160,137,91,90,15,131,13,201,95,96,53,194,233,7,225,140,36,103,30,69,142,8,99,37,240,21,10,23,190,6,148,247,120,234,75,0,26,197,62,94,252,219,203,117,35,11,32,57,177,33,88,237,149,56,87,174,20,125,136,171,168,68,175,74,165,71,134,139,48,27,166,77,146,158,231,83,111,229,122,60,211,133,230,220,105,92,41,55,46,245,40,244,102,143,54,65,25,63,161,1,216,80,73,209,76,132,187,208,89,18,169,200,196,135,130,116,188,159,86,164,100,109,198,173,186,3,64,52,217,226,250,124,123,5,202,38,147,118,126,255,82,85,212,207,206,59,227,47,16,58,17,182,189,28,42,223,183,170,213,119,248,152,2,44,154,163,70,221,153,101,155,167,43,172,9,129,22,39,253,9,98,108,110,79,113,224,232,178,185,112,104,218,246,97,228,251,34,242,193,238,210,144,12,191,179,162,241, 81,51,145,235,249,14,239,107,49,192,214,31,181,199,106,157,184,84,204,176,115,121,50,45,127,4,150,254,138,236,205,93,222,114,67,29,24,72,243,141,128,195,78,66,215,61,156,180]</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Create.ts#L163">Create.ts:163</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Create.ts#L163">Create.ts:163</a></li>
 						</ul>
 					</aside>
 					<div class="tsd-comment tsd-typography">
@@ -210,6 +210,9 @@ <h3>perm<wbr>Table</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -231,6 +234,9 @@ <h3>perm<wbr>Table</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/modules/_dom_.html b/docs/modules/_dom_.html
index 9479cce4..54c63e62 100644
--- a/docs/modules/_dom_.html
+++ b/docs/modules/_dom_.html
@@ -95,7 +95,7 @@ <h3>DOMForm<wbr>Context</h3>
 					<div class="tsd-signature tsd-kind-icon">DOMForm<wbr>Context<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">object</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Dom.ts#L11">Dom.ts:11</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Dom.ts#L15">Dom.ts:15</a></li>
 						</ul>
 					</aside>
 					<div class="tsd-comment tsd-typography">
@@ -171,6 +171,9 @@ <h5>style<span class="tsd-signature-symbol">: </span><span class="tsd-signature-
 					<li class=" tsd-kind-external-module">
 						<a href="_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -192,6 +195,9 @@ <h5>style<span class="tsd-signature-symbol">: </span><span class="tsd-signature-
 					<li class=" tsd-kind-external-module">
 						<a href="__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/modules/_form_.html b/docs/modules/_form_.html
index b1d2bfcc..0fd60542 100644
--- a/docs/modules/_form_.html
+++ b/docs/modules/_form_.html
@@ -115,6 +115,9 @@ <h3>Classes</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -136,6 +139,9 @@ <h3>Classes</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/modules/_linearalgebra_.html b/docs/modules/_linearalgebra_.html
index 5dbd032d..ef6d3ec1 100644
--- a/docs/modules/_linearalgebra_.html
+++ b/docs/modules/_linearalgebra_.html
@@ -114,6 +114,9 @@ <h3>Classes</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -135,6 +138,9 @@ <h3>Classes</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/modules/_num_.html b/docs/modules/_num_.html
index ff1ad701..1b42e799 100644
--- a/docs/modules/_num_.html
+++ b/docs/modules/_num_.html
@@ -116,6 +116,9 @@ <h3>Classes</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -137,6 +140,9 @@ <h3>Classes</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/modules/_op_.html b/docs/modules/_op_.html
index 9612d81e..61bf0cbd 100644
--- a/docs/modules/_op_.html
+++ b/docs/modules/_op_.html
@@ -81,6 +81,12 @@ <h3>Classes</h3>
 								<li class="tsd-kind-class tsd-parent-kind-external-module"><a href="../classes/_op_.triangle.html" class="tsd-kind-icon">Triangle</a></li>
 							</ul>
 						</section>
+						<section class="tsd-index-section ">
+							<h3>Type aliases</h3>
+							<ul class="tsd-index-list">
+								<li class="tsd-kind-type-alias tsd-parent-kind-external-module"><a href="_op_.html#intersectcontext" class="tsd-kind-icon">Intersect<wbr>Context</a></li>
+							</ul>
+						</section>
 						<section class="tsd-index-section tsd-is-not-exported">
 							<h3>Functions</h3>
 							<ul class="tsd-index-list">
@@ -91,6 +97,42 @@ <h3>Functions</h3>
 					</div>
 				</section>
 			</section>
+			<section class="tsd-panel-group tsd-member-group ">
+				<h2>Type aliases</h2>
+				<section class="tsd-panel tsd-member tsd-kind-type-alias tsd-parent-kind-external-module">
+					<a name="intersectcontext" class="tsd-anchor"></a>
+					<h3>Intersect<wbr>Context</h3>
+					<div class="tsd-signature tsd-kind-icon">Intersect<wbr>Context<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">object</span></div>
+					<aside class="tsd-sources">
+						<ul>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L15">Op.ts:15</a></li>
+						</ul>
+					</aside>
+					<div class="tsd-type-declaration">
+						<h4>Type declaration</h4>
+						<ul class="tsd-parameters">
+							<li class="tsd-parameter">
+								<h5>dist<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></h5>
+							</li>
+							<li class="tsd-parameter">
+								<h5>edge<span class="tsd-signature-symbol">: </span><a href="../classes/_pt_.group.html" class="tsd-signature-type">Group</a></h5>
+							</li>
+							<li class="tsd-parameter">
+								<h5>normal<span class="tsd-signature-symbol">: </span><a href="../classes/_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+							</li>
+							<li class="tsd-parameter">
+								<h5><span class="tsd-flag ts-flagOptional">Optional</span> other<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">any</span></h5>
+							</li>
+							<li class="tsd-parameter">
+								<h5>vertex<span class="tsd-signature-symbol">: </span><a href="../classes/_pt_.pt.html" class="tsd-signature-type">Pt</a></h5>
+							</li>
+							<li class="tsd-parameter">
+								<h5>which<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></h5>
+							</li>
+						</ul>
+					</div>
+				</section>
+			</section>
 			<section class="tsd-panel-group tsd-member-group tsd-is-not-exported">
 				<h2>Functions</h2>
 				<section class="tsd-panel tsd-member tsd-kind-function tsd-parent-kind-external-module tsd-is-not-exported">
@@ -103,7 +145,7 @@ <h3>_error<wbr>Length</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L11">Op.ts:11</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L12">Op.ts:12</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -129,7 +171,7 @@ <h3>_error<wbr>Outof<wbr>Bound</h3>
 						<li class="tsd-description">
 							<aside class="tsd-sources">
 								<ul>
-									<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Op.ts#L12">Op.ts:12</a></li>
+									<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Op.ts#L13">Op.ts:13</a></li>
 								</ul>
 							</aside>
 							<h4 class="tsd-parameters-title">Parameters</h4>
@@ -180,6 +222,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">any</span
 					<li class="current tsd-kind-external-module">
 						<a href="_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -201,6 +246,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">any</span
 					<li class=" tsd-kind-external-module">
 						<a href="__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
@@ -223,6 +271,9 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">any</span
 					<li class=" tsd-kind-class tsd-parent-kind-external-module">
 						<a href="../classes/_op_.triangle.html" class="tsd-kind-icon">Triangle</a>
 					</li>
+					<li class=" tsd-kind-type-alias tsd-parent-kind-external-module">
+						<a href="_op_.html#intersectcontext" class="tsd-kind-icon">Intersect<wbr>Context</a>
+					</li>
 					<li class=" tsd-kind-function tsd-parent-kind-external-module tsd-is-not-exported">
 						<a href="_op_.html#_errorlength" class="tsd-kind-icon">_error<wbr>Length</a>
 					</li>
diff --git a/docs/modules/_physics_.html b/docs/modules/_physics_.html
new file mode 100644
index 00000000..04232f74
--- /dev/null
+++ b/docs/modules/_physics_.html
@@ -0,0 +1,229 @@
+<!doctype html>
+<html class="default no-js">
+<head>
+	<meta charset="utf-8">
+	<meta http-equiv="X-UA-Compatible" content="IE=edge">
+	<title>&quot;Physics&quot; | Pts</title>
+	<meta name="description" content="">
+	<meta name="viewport" content="width=device-width, initial-scale=1">
+	<link rel="stylesheet" href="../assets/css/main.css">
+</head>
+<body>
+<header>
+	<div class="tsd-page-toolbar">
+		<div class="container">
+			<div class="table-wrap">
+				<div class="table-cell" id="tsd-search" data-index="../assets/js/search.js" data-base="..">
+					<div class="field">
+						<label for="tsd-search-field" class="tsd-widget search no-caption">Search</label>
+						<input id="tsd-search-field" type="text" />
+					</div>
+					<ul class="results">
+						<li class="state loading">Preparing search index...</li>
+						<li class="state failure">The search index is not available</li>
+					</ul>
+					<a href="../index.html" class="title">Pts</a>
+				</div>
+				<div class="table-cell" id="tsd-widgets">
+					<div id="tsd-filter">
+						<a href="#" class="tsd-widget options no-caption" data-toggle="options">Options</a>
+						<div class="tsd-filter-group">
+							<div class="tsd-select" id="tsd-filter-visibility">
+								<span class="tsd-select-label">All</span>
+								<ul class="tsd-select-list">
+									<li data-value="public">Public</li>
+									<li data-value="protected">Public/Protected</li>
+									<li data-value="private" class="selected">All</li>
+								</ul>
+							</div>
+							<input type="checkbox" id="tsd-filter-inherited" checked />
+							<label class="tsd-widget" for="tsd-filter-inherited">Inherited</label>
+							<input type="checkbox" id="tsd-filter-externals" checked />
+							<label class="tsd-widget" for="tsd-filter-externals">Externals</label>
+							<input type="checkbox" id="tsd-filter-only-exported" />
+							<label class="tsd-widget" for="tsd-filter-only-exported">Only exported</label>
+						</div>
+					</div>
+					<a href="#" class="tsd-widget menu no-caption" data-toggle="menu">Menu</a>
+				</div>
+			</div>
+		</div>
+	</div>
+	<div class="tsd-page-title">
+		<div class="container">
+			<ul class="tsd-breadcrumb">
+				<li>
+					<a href="../index.html">Globals</a>
+				</li>
+				<li>
+					<a href="_physics_.html">&quot;Physics&quot;</a>
+				</li>
+			</ul>
+			<h1>External module &quot;Physics&quot;</h1>
+		</div>
+	</div>
+</header>
+<div class="container container-main">
+	<div class="row">
+		<div class="col-8 col-content">
+			<section class="tsd-panel-group tsd-index-group">
+				<h2>Index</h2>
+				<section class="tsd-panel tsd-index-panel">
+					<div class="tsd-index-content">
+						<section class="tsd-index-section ">
+							<h3>Classes</h3>
+							<ul class="tsd-index-list">
+								<li class="tsd-kind-class tsd-parent-kind-external-module"><a href="../classes/_physics_.body.html" class="tsd-kind-icon">Body</a></li>
+								<li class="tsd-kind-class tsd-parent-kind-external-module"><a href="../classes/_physics_.particle.html" class="tsd-kind-icon">Particle</a></li>
+								<li class="tsd-kind-class tsd-parent-kind-external-module"><a href="../classes/_physics_.world.html" class="tsd-kind-icon">World</a></li>
+							</ul>
+						</section>
+					</div>
+				</section>
+			</section>
+		</div>
+		<div class="col-4 col-menu menu-sticky-wrap menu-highlight">
+			<nav class="tsd-navigation primary">
+				<ul>
+					<li class="globals  ">
+						<a href="../index.html"><em>Globals</em></a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_bound_.html">"<wbr>Bound"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_canvas_.html">"<wbr>Canvas"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_color_.html">"<wbr>Color"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_create_.html">"<wbr>Create"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_dom_.html">"<wbr>Dom"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_form_.html">"<wbr>Form"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_linearalgebra_.html">"<wbr>Linear<wbr>Algebra"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_num_.html">"<wbr>Num"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_op_.html">"<wbr>Op"</a>
+					</li>
+					<li class="current tsd-kind-external-module">
+						<a href="_physics_.html">"<wbr>Physics"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_pt_.html">"<wbr>Pt"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_space_.html">"<wbr>Space"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_svg_.html">"<wbr>Svg"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_typography_.html">"<wbr>Typography"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_ui_.html">"UI"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_util_.html">"<wbr>Util"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="__lib_.html">"_<wbr>lib"</a>
+					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="__module_.html">"_<wbr>module"</a>
+					</li>
+				</ul>
+			</nav>
+			<nav class="tsd-navigation secondary menu-sticky">
+				<ul class="before-current">
+					<li class=" tsd-kind-class tsd-parent-kind-external-module">
+						<a href="../classes/_physics_.body.html" class="tsd-kind-icon">Body</a>
+					</li>
+					<li class=" tsd-kind-class tsd-parent-kind-external-module">
+						<a href="../classes/_physics_.particle.html" class="tsd-kind-icon">Particle</a>
+					</li>
+					<li class=" tsd-kind-class tsd-parent-kind-external-module">
+						<a href="../classes/_physics_.world.html" class="tsd-kind-icon">World</a>
+					</li>
+				</ul>
+			</nav>
+		</div>
+	</div>
+</div>
+<footer class="with-border-bottom">
+	<div class="container">
+		<h2>Legend</h2>
+		<div class="tsd-legend-group">
+			<ul class="tsd-legend">
+				<li class="tsd-kind-module"><span class="tsd-kind-icon">Module</span></li>
+				<li class="tsd-kind-object-literal"><span class="tsd-kind-icon">Object literal</span></li>
+				<li class="tsd-kind-variable"><span class="tsd-kind-icon">Variable</span></li>
+				<li class="tsd-kind-function"><span class="tsd-kind-icon">Function</span></li>
+				<li class="tsd-kind-function tsd-has-type-parameter"><span class="tsd-kind-icon">Function with type parameter</span></li>
+				<li class="tsd-kind-index-signature"><span class="tsd-kind-icon">Index signature</span></li>
+				<li class="tsd-kind-type-alias"><span class="tsd-kind-icon">Type alias</span></li>
+			</ul>
+			<ul class="tsd-legend">
+				<li class="tsd-kind-enum"><span class="tsd-kind-icon">Enumeration</span></li>
+				<li class="tsd-kind-enum-member"><span class="tsd-kind-icon">Enumeration member</span></li>
+				<li class="tsd-kind-property tsd-parent-kind-enum"><span class="tsd-kind-icon">Property</span></li>
+				<li class="tsd-kind-method tsd-parent-kind-enum"><span class="tsd-kind-icon">Method</span></li>
+			</ul>
+			<ul class="tsd-legend">
+				<li class="tsd-kind-interface"><span class="tsd-kind-icon">Interface</span></li>
+				<li class="tsd-kind-interface tsd-has-type-parameter"><span class="tsd-kind-icon">Interface with type parameter</span></li>
+				<li class="tsd-kind-constructor tsd-parent-kind-interface"><span class="tsd-kind-icon">Constructor</span></li>
+				<li class="tsd-kind-property tsd-parent-kind-interface"><span class="tsd-kind-icon">Property</span></li>
+				<li class="tsd-kind-method tsd-parent-kind-interface"><span class="tsd-kind-icon">Method</span></li>
+				<li class="tsd-kind-index-signature tsd-parent-kind-interface"><span class="tsd-kind-icon">Index signature</span></li>
+			</ul>
+			<ul class="tsd-legend">
+				<li class="tsd-kind-class"><span class="tsd-kind-icon">Class</span></li>
+				<li class="tsd-kind-class tsd-has-type-parameter"><span class="tsd-kind-icon">Class with type parameter</span></li>
+				<li class="tsd-kind-constructor tsd-parent-kind-class"><span class="tsd-kind-icon">Constructor</span></li>
+				<li class="tsd-kind-property tsd-parent-kind-class"><span class="tsd-kind-icon">Property</span></li>
+				<li class="tsd-kind-method tsd-parent-kind-class"><span class="tsd-kind-icon">Method</span></li>
+				<li class="tsd-kind-accessor tsd-parent-kind-class"><span class="tsd-kind-icon">Accessor</span></li>
+				<li class="tsd-kind-index-signature tsd-parent-kind-class"><span class="tsd-kind-icon">Index signature</span></li>
+			</ul>
+			<ul class="tsd-legend">
+				<li class="tsd-kind-constructor tsd-parent-kind-class tsd-is-inherited"><span class="tsd-kind-icon">Inherited constructor</span></li>
+				<li class="tsd-kind-property tsd-parent-kind-class tsd-is-inherited"><span class="tsd-kind-icon">Inherited property</span></li>
+				<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><span class="tsd-kind-icon">Inherited method</span></li>
+				<li class="tsd-kind-accessor tsd-parent-kind-class tsd-is-inherited"><span class="tsd-kind-icon">Inherited accessor</span></li>
+			</ul>
+			<ul class="tsd-legend">
+				<li class="tsd-kind-property tsd-parent-kind-class tsd-is-protected"><span class="tsd-kind-icon">Protected property</span></li>
+				<li class="tsd-kind-method tsd-parent-kind-class tsd-is-protected"><span class="tsd-kind-icon">Protected method</span></li>
+				<li class="tsd-kind-accessor tsd-parent-kind-class tsd-is-protected"><span class="tsd-kind-icon">Protected accessor</span></li>
+			</ul>
+			<ul class="tsd-legend">
+				<li class="tsd-kind-property tsd-parent-kind-class tsd-is-private"><span class="tsd-kind-icon">Private property</span></li>
+				<li class="tsd-kind-method tsd-parent-kind-class tsd-is-private"><span class="tsd-kind-icon">Private method</span></li>
+				<li class="tsd-kind-accessor tsd-parent-kind-class tsd-is-private"><span class="tsd-kind-icon">Private accessor</span></li>
+			</ul>
+			<ul class="tsd-legend">
+				<li class="tsd-kind-property tsd-parent-kind-class tsd-is-static"><span class="tsd-kind-icon">Static property</span></li>
+				<li class="tsd-kind-call-signature tsd-parent-kind-class tsd-is-static"><span class="tsd-kind-icon">Static method</span></li>
+			</ul>
+		</div>
+	</div>
+</footer>
+<div class="container tsd-generator">
+	<p>Generated using <a href="http://typedoc.org/" target="_blank">TypeDoc</a></p>
+</div>
+<div class="overlay"></div>
+<script src="../assets/js/main.js"></script>
+<script>if (location.protocol == 'file:') document.write('<script src="../assets/js/search.js"><' + '/script>');</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/docs/modules/_pt_.html b/docs/modules/_pt_.html
index d5bac7bc..df0d7b4b 100644
--- a/docs/modules/_pt_.html
+++ b/docs/modules/_pt_.html
@@ -107,7 +107,7 @@ <h3>Group<wbr>Like</h3>
 					<div class="tsd-signature tsd-kind-icon">Group<wbr>Like<span class="tsd-signature-symbol">:</span> <a href="../classes/_pt_.group.html" class="tsd-signature-type">Group</a><span class="tsd-signature-symbol"> | </span><a href="../classes/_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol">[]</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L18">Pt.ts:18</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L18">Pt.ts:18</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -117,7 +117,7 @@ <h3>Pt<wbr>Like</h3>
 					<div class="tsd-signature tsd-kind-icon">Pt<wbr>Like<span class="tsd-signature-symbol">:</span> <a href="../classes/_pt_.pt.html" class="tsd-signature-type">Pt</a><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">Float32Array</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">[]</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L19">Pt.ts:19</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L19">Pt.ts:19</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -130,7 +130,7 @@ <h3>Pt<wbr>Base<wbr>Array</h3>
 					<div class="tsd-signature tsd-kind-icon">Pt<wbr>Base<wbr>Array<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">Float32ArrayConstructor</span><span class="tsd-signature-symbol"> =&nbsp;Float32Array</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Pt.ts#L17">Pt.ts:17</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Pt.ts#L17">Pt.ts:17</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -169,6 +169,9 @@ <h3>Pt<wbr>Base<wbr>Array</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class="current tsd-kind-external-module">
 						<a href="_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -190,6 +193,9 @@ <h3>Pt<wbr>Base<wbr>Array</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/modules/_space_.html b/docs/modules/_space_.html
index 1537ea19..f7e50f50 100644
--- a/docs/modules/_space_.html
+++ b/docs/modules/_space_.html
@@ -104,7 +104,7 @@ <h3>Animate<wbr>Function</h3>
 					<div class="tsd-signature tsd-kind-icon">Animate<wbr>Function<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">function</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L10">Space.ts:10</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L10">Space.ts:10</a></li>
 						</ul>
 					</aside>
 					<div class="tsd-type-declaration">
@@ -141,7 +141,7 @@ <h3>Touch<wbr>Points<wbr>Key</h3>
 					<div class="tsd-signature tsd-kind-icon">Touch<wbr>Points<wbr>Key<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">"touches"</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">"changedTouches"</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">"targetTouches"</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Space.ts#L296">Space.ts:296</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Space.ts#L296">Space.ts:296</a></li>
 						</ul>
 					</aside>
 				</section>
@@ -180,6 +180,9 @@ <h3>Touch<wbr>Points<wbr>Key</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -201,6 +204,9 @@ <h3>Touch<wbr>Points<wbr>Key</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/modules/_svg_.html b/docs/modules/_svg_.html
index 1849d729..6fb7fde1 100644
--- a/docs/modules/_svg_.html
+++ b/docs/modules/_svg_.html
@@ -114,6 +114,9 @@ <h3>Classes</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -135,6 +138,9 @@ <h3>Classes</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/modules/_typography_.html b/docs/modules/_typography_.html
index 5aa562b3..bb9f8dcd 100644
--- a/docs/modules/_typography_.html
+++ b/docs/modules/_typography_.html
@@ -113,6 +113,9 @@ <h3>Classes</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -134,6 +137,9 @@ <h3>Classes</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/modules/_ui_.html b/docs/modules/_ui_.html
index 7c951336..677e26aa 100644
--- a/docs/modules/_ui_.html
+++ b/docs/modules/_ui_.html
@@ -106,7 +106,7 @@ <h3>UIHandler</h3>
 					<div class="tsd-signature tsd-kind-icon">UIHandler<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">function</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L20">UI.ts:20</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L24">UI.ts:24</a></li>
 						</ul>
 					</aside>
 					<div class="tsd-comment tsd-typography">
@@ -151,7 +151,7 @@ <h3>UIPointer<wbr>Actions</h3>
 					<div class="tsd-signature tsd-kind-icon">UIPointer<wbr>Actions<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">object</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L12">UI.ts:12</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L16">UI.ts:16</a></li>
 						</ul>
 					</aside>
 					<section class="tsd-panel tsd-member tsd-kind-variable tsd-parent-kind-object-literal">
@@ -160,7 +160,7 @@ <h3>down</h3>
 						<div class="tsd-signature tsd-kind-icon">down<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;down&quot;</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L13">UI.ts:13</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L17">UI.ts:17</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -170,7 +170,7 @@ <h3>drag</h3>
 						<div class="tsd-signature tsd-kind-icon">drag<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;drag&quot;</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L13">UI.ts:13</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L17">UI.ts:17</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -180,7 +180,7 @@ <h3>drop</h3>
 						<div class="tsd-signature tsd-kind-icon">drop<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;drop&quot;</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L13">UI.ts:13</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L17">UI.ts:17</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -190,7 +190,7 @@ <h3>move</h3>
 						<div class="tsd-signature tsd-kind-icon">move<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;move&quot;</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L13">UI.ts:13</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L17">UI.ts:17</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -200,7 +200,7 @@ <h3>out</h3>
 						<div class="tsd-signature tsd-kind-icon">out<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;out&quot;</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L13">UI.ts:13</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L17">UI.ts:17</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -210,7 +210,7 @@ <h3>over</h3>
 						<div class="tsd-signature tsd-kind-icon">over<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;over&quot;</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L13">UI.ts:13</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L17">UI.ts:17</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -220,7 +220,7 @@ <h3>up</h3>
 						<div class="tsd-signature tsd-kind-icon">up<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;up&quot;</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/UI.ts#L13">UI.ts:13</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/UI.ts#L17">UI.ts:17</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -260,6 +260,9 @@ <h3>up</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -281,6 +284,9 @@ <h3>up</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/docs/modules/_util_.html b/docs/modules/_util_.html
index 477cd3eb..0d202b55 100644
--- a/docs/modules/_util_.html
+++ b/docs/modules/_util_.html
@@ -93,7 +93,7 @@ <h3>Const</h3>
 					<div class="tsd-signature tsd-kind-icon">Const<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">object</span></div>
 					<aside class="tsd-sources">
 						<ul>
-							<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L11">Util.ts:11</a></li>
+							<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L11">Util.ts:11</a></li>
 						</ul>
 					</aside>
 					<div class="tsd-comment tsd-typography">
@@ -107,7 +107,7 @@ <h3>bottom</h3>
 						<div class="tsd-signature tsd-kind-icon">bottom<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;6</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L30">Util.ts:30</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L30">Util.ts:30</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -117,7 +117,7 @@ <h3>bottom_<wbr>left</h3>
 						<div class="tsd-signature tsd-kind-icon">bottom_<wbr>left<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;7</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L33">Util.ts:33</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L33">Util.ts:33</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -127,7 +127,7 @@ <h3>bottom_<wbr>right</h3>
 						<div class="tsd-signature tsd-kind-icon">bottom_<wbr>right<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;5</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L27">Util.ts:27</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L27">Util.ts:27</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -137,7 +137,7 @@ <h3>deg_<wbr>to_<wbr>rad</h3>
 						<div class="tsd-signature tsd-kind-icon">deg_<wbr>to_<wbr>rad<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0.017453292519943295</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L75">Util.ts:75</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L75">Util.ts:75</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -147,7 +147,7 @@ <h3>epsilon</h3>
 						<div class="tsd-signature tsd-kind-icon">epsilon<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0.0001</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L48">Util.ts:48</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L48">Util.ts:48</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -157,7 +157,7 @@ <h3>gaussian</h3>
 						<div class="tsd-signature tsd-kind-icon">gaussian<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0.3989422804014327</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L84">Util.ts:84</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L84">Util.ts:84</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -167,7 +167,7 @@ <h3>gravity</h3>
 						<div class="tsd-signature tsd-kind-icon">gravity<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;9.81</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L78">Util.ts:78</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L78">Util.ts:78</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -177,7 +177,7 @@ <h3>half_<wbr>pi</h3>
 						<div class="tsd-signature tsd-kind-icon">half_<wbr>pi<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;1.5707963267948966</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L63">Util.ts:63</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L63">Util.ts:63</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -187,7 +187,7 @@ <h3>horizontal</h3>
 						<div class="tsd-signature tsd-kind-icon">horizontal<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L17">Util.ts:17</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L17">Util.ts:17</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -197,7 +197,7 @@ <h3>identical</h3>
 						<div class="tsd-signature tsd-kind-icon">identical<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L21">Util.ts:21</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L21">Util.ts:21</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -207,7 +207,7 @@ <h3>left</h3>
 						<div class="tsd-signature tsd-kind-icon">left<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;8</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L36">Util.ts:36</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L36">Util.ts:36</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -217,7 +217,7 @@ <h3>max</h3>
 						<div class="tsd-signature tsd-kind-icon">max<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;Number.MAX_VALUE</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L51">Util.ts:51</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L51">Util.ts:51</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -227,7 +227,7 @@ <h3>min</h3>
 						<div class="tsd-signature tsd-kind-icon">min<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;Number.MIN_VALUE</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L54">Util.ts:54</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L54">Util.ts:54</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -237,7 +237,7 @@ <h3>newton</h3>
 						<div class="tsd-signature tsd-kind-icon">newton<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0.10197</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L81">Util.ts:81</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L81">Util.ts:81</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -247,7 +247,7 @@ <h3>one_<wbr>degree</h3>
 						<div class="tsd-signature tsd-kind-icon">one_<wbr>degree<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0.017453292519943295</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L69">Util.ts:69</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L69">Util.ts:69</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -257,7 +257,7 @@ <h3>pi</h3>
 						<div class="tsd-signature tsd-kind-icon">pi<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;Math.PI</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L57">Util.ts:57</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L57">Util.ts:57</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -267,7 +267,7 @@ <h3>quarter_<wbr>pi</h3>
 						<div class="tsd-signature tsd-kind-icon">quarter_<wbr>pi<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;0.7853981633974483</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L66">Util.ts:66</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L66">Util.ts:66</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -277,7 +277,7 @@ <h3>rad_<wbr>to_<wbr>deg</h3>
 						<div class="tsd-signature tsd-kind-icon">rad_<wbr>to_<wbr>deg<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;57.29577951308232</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L72">Util.ts:72</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L72">Util.ts:72</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -287,7 +287,7 @@ <h3>right</h3>
 						<div class="tsd-signature tsd-kind-icon">right<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;4</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L24">Util.ts:24</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L24">Util.ts:24</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -297,7 +297,7 @@ <h3>top</h3>
 						<div class="tsd-signature tsd-kind-icon">top<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;2</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L42">Util.ts:42</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L42">Util.ts:42</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -307,7 +307,7 @@ <h3>top_<wbr>left</h3>
 						<div class="tsd-signature tsd-kind-icon">top_<wbr>left<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;1</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L39">Util.ts:39</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L39">Util.ts:39</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -317,7 +317,7 @@ <h3>top_<wbr>right</h3>
 						<div class="tsd-signature tsd-kind-icon">top_<wbr>right<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;3</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L45">Util.ts:45</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L45">Util.ts:45</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -327,7 +327,7 @@ <h3>two_<wbr>pi</h3>
 						<div class="tsd-signature tsd-kind-icon">two_<wbr>pi<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;6.283185307179586</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L60">Util.ts:60</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L60">Util.ts:60</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -337,7 +337,7 @@ <h3>vertical</h3>
 						<div class="tsd-signature tsd-kind-icon">vertical<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span><span class="tsd-signature-symbol"> =&nbsp;1</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L18">Util.ts:18</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L18">Util.ts:18</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -347,7 +347,7 @@ <h3>xy</h3>
 						<div class="tsd-signature tsd-kind-icon">xy<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;xy&quot;</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L12">Util.ts:12</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L12">Util.ts:12</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -357,7 +357,7 @@ <h3>xyz</h3>
 						<div class="tsd-signature tsd-kind-icon">xyz<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;xyz&quot;</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L15">Util.ts:15</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L15">Util.ts:15</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -367,7 +367,7 @@ <h3>xz</h3>
 						<div class="tsd-signature tsd-kind-icon">xz<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;xz&quot;</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L14">Util.ts:14</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L14">Util.ts:14</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -377,7 +377,7 @@ <h3>yz</h3>
 						<div class="tsd-signature tsd-kind-icon">yz<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> =&nbsp;&quot;yz&quot;</span></div>
 						<aside class="tsd-sources">
 							<ul>
-								<li>Defined in <a href="https://github.com/williamngan/pts/blob/91de63a/src/Util.ts#L13">Util.ts:13</a></li>
+								<li>Defined in <a href="https://github.com/williamngan/pts/blob/bff23b0/src/Util.ts#L13">Util.ts:13</a></li>
 							</ul>
 						</aside>
 					</section>
@@ -417,6 +417,9 @@ <h3>yz</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="_op_.html">"<wbr>Op"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="_physics_.html">"<wbr>Physics"</a>
+					</li>
 					<li class=" tsd-kind-external-module">
 						<a href="_pt_.html">"<wbr>Pt"</a>
 					</li>
@@ -438,6 +441,9 @@ <h3>yz</h3>
 					<li class=" tsd-kind-external-module">
 						<a href="__lib_.html">"_<wbr>lib"</a>
 					</li>
+					<li class=" tsd-kind-external-module">
+						<a href="__module_.html">"_<wbr>module"</a>
+					</li>
 				</ul>
 			</nav>
 			<nav class="tsd-navigation secondary menu-sticky">
diff --git a/package.json b/package.json
index 2271855f..2746f930 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
     "url": "https://github.com/williamngan/pts.git"
   },
   "author": "William Ngan",
-  "license": "Apache",
+  "license": "Apache License 2.0",
   "dependencies": {},
   "devDependencies": {
     "@types/node": "^9.4.7",
diff --git a/src/Physics.ts b/src/Physics.ts
index a954221c..43540a20 100644
--- a/src/Physics.ts
+++ b/src/Physics.ts
@@ -74,7 +74,7 @@ export class World {
    * Get a particle in this world by index or string id
    * @param id numeric index of the particle, or a string id that associates with it. 
    */
-  particle( id:number ) { return this._particles[ (typeof id === "string") ? this._names.p[id] : id ]; }
+  particle( id:number|string ) { return this._particles[ (typeof id === "string") ? this._names.p[id] : id ]; }