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Colormap.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>OpenLIMEs Class: Colormap</title>
<!--[if lt IE 9]>
<script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
<link type="text/css" rel="stylesheet" href="styles/sunlight.default.css">
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Fired when the layout is ready for rendering.
This occurs when:
- Single-resolution image is fully downloaded
- Multi-resolution structure is initialized and validated
- Tile pyramid information is computedevent:</a></li><li><a href="global.html#event:Layout#readyFiredwhenthelayoutisreadyforrendering.Thisoccurswhen:-Tiledescriptorsareloadedfromannotationfile-Tiledescriptorsaresetprogrammatically">Layout#ready
Fired when the layout is ready for rendering.
This occurs when:
- Tile descriptors are loaded from annotation file
- Tile descriptors are set programmaticallyevent:</a></li><li><a href="global.html#event:Layout#updateSizeFiredwhenthelayoutsizechangesandsceneextensionneedsupdating.Thisoccurswhen:-Imagedimensionsaredetermined-Pyramidlevelsareinitialized-Boundingboxesarecomputed">Layout#updateSize
Fired when the layout size changes and scene extension needs updating.
This occurs when:
- Image dimensions are determined
- Pyramid levels are initialized
- Bounding boxes are computedevent:</a></li><li><a href="global.html#event:Layout#updateSizeFiredwhenthelayoutsizechangesandsceneextensionneedsupdating.Thisoccurswhen:-Tiledescriptorsareloadedandboundingboxiscomputed">Layout#updateSize
Fired when the layout size changes and scene extension needs updating.
This occurs when:
- Tile descriptors are loaded and bounding box is computedevent:</a></li><li><a href="LayoutTileImages.html#event:ready">LayoutTileImages#event:ready</a></li><li><a href="LayoutTileImages.html#event:updateSize">LayoutTileImages#event:updateSize</a></li><li><a href="LayoutTiles.html#event:ready">LayoutTiles#event:ready</a></li><li><a href="LayoutTiles.html#event:updateSize">LayoutTiles#event:updateSize</a></li><li><a href="UIDialog.html#event:closed">UIDialog#event:closed</a></li>
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<h1 class="page-title">Class: Colormap</h1>
<section>
<header>
<h2>
Colormap
</h2>
<div class="class-description"><p>Creates a colormap for mapping numerical values to colors.
Supports linear, spline, and bar interpolation between colors.</p></div>
</header>
<article>
<div class="container-overview">
<hr>
<dt>
<h4 class="name" id="Colormap"><span class="type-signature"></span>new Colormap( [colors] [, options])</h4>
</dt>
<dd>
<div class="description">
<p>Creates a new Colormap instance.</p>
</div>
<h5>Parameters:</h5>
<table class="params table table-striped">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th>Argument</th>
<th>Default</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>colors</code></td>
<td class="type">
<span class="param-type">Array.<<a href="Color.html">Color</a>></span>
</td>
<td class="attributes">
<optional><br>
</td>
<td class="default">
[black, white]
</td>
<td class="description last"><p>Array of colors to interpolate between</p></td>
</tr>
<tr>
<td class="name"><code>options</code></td>
<td class="type">
<span class="param-type">Object</span>
</td>
<td class="attributes">
<optional><br>
</td>
<td class="default">
</td>
<td class="description last"><p>Configuration options</p>
<h6 class="method-params-label method-subparams-label">Properties</h6>
<table class="params table table-striped">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th>Argument</th>
<th>Default</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>domain</code></td>
<td class="type">
<span class="param-type">Array.<number></span>
</td>
<td class="attributes">
<optional><br>
</td>
<td class="default">
[0,1]
</td>
<td class="description last"><p>Domain range for mapping</p></td>
</tr>
<tr>
<td class="name"><code>lowColor</code></td>
<td class="type">
<span class="param-type"><a href="Color.html">Color</a></span>
</td>
<td class="attributes">
<optional><br>
</td>
<td class="default">
</td>
<td class="description last"><p>Color for values below domain (defaults to first color)</p></td>
</tr>
<tr>
<td class="name"><code>highColor</code></td>
<td class="type">
<span class="param-type"><a href="Color.html">Color</a></span>
</td>
<td class="attributes">
<optional><br>
</td>
<td class="default">
</td>
<td class="description last"><p>Color for values above domain (defaults to last color)</p></td>
</tr>
<tr>
<td class="name"><code>description</code></td>
<td class="type">
<span class="param-type">string</span>
</td>
<td class="attributes">
<optional><br>
</td>
<td class="default">
''
</td>
<td class="description last"><p>Description of the colormap</p></td>
</tr>
<tr>
<td class="name"><code>type</code></td>
<td class="type">
<span class="param-type">'linear'</span>
|
<span class="param-type">'spline'</span>
|
<span class="param-type">'bar'</span>
</td>
<td class="attributes">
<optional><br>
</td>
<td class="default">
'linear'
</td>
<td class="description last"><p>Interpolation type</p></td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
<dl class="details">
<dt class="tag-source method-doc-label method-doc-details-label">Source:</dt>
<dd class="tag-source">
<ul class="dummy">
<li>
<a href="Colormap.js.html">Colormap.js</a>,
<a href="Colormap.js.html#sunlight-1-line-287">line 287</a>
</li>
</ul>
</dd>
</dl>
<h5>Throws:</h5>
<dl>
<dt>
<div class="param-desc">
<p>If colors/domain format is invalid</p>
</div>
</dt>
<dt>
<dl>
<dt>
Type
</dt>
<dd>
<span class="param-type">Error</span>
</dd>
</dl>
</dt>
</dl>
</dd>
</div>
<h3 class="subsection-title">Methods</h3>
<dl>
<hr>
<dt>
<h4 class="name" id="at"><span class="type-signature"></span>at(x)</h4>
</dt>
<dd>
<div class="description">
<p>Gets color for a value using configured interpolation type.</p>
</div>
<h5>Parameters:</h5>
<table class="params table table-striped">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>x</code></td>
<td class="type">
<span class="param-type">number</span>
</td>
<td class="description last"><p>Value to get color for</p></td>
</tr>
</tbody>
</table>
<dl class="details">
<dt class="tag-source method-doc-label method-doc-details-label">Source:</dt>
<dd class="tag-source">
<ul class="dummy">
<li>
<a href="Colormap.js.html">Colormap.js</a>,
<a href="Colormap.js.html#sunlight-1-line-410">line 410</a>
</li>
</ul>
</dd>
</dl>
<h5>Throws:</h5>
<dl>
<dt>
<div class="param-desc">
<p>If interpolation type is invalid</p>
</div>
</dt>
<dt>
<dl>
<dt>
Type
</dt>
<dd>
<span class="param-type">Error</span>
</dd>
</dl>
</dt>
</dl>
<h5>Returns:</h5>
<div class="param-desc">
<p>Corresponding color</p>
</div>
<dl>
<dt>
Type
</dt>
<dd>
<span class="param-type"><a href="Color.html">Color</a></span>
</dd>
</dl>
</dd>
<hr>
<dt>
<h4 class="name" id="rangeDomain"><span class="type-signature"></span>rangeDomain()</h4>
</dt>
<dd>
<div class="description">
<p>Gets the domain range of the colormap.</p>
</div>
<dl class="details">
<dt class="tag-source method-doc-label method-doc-details-label">Source:</dt>
<dd class="tag-source">
<ul class="dummy">
<li>
<a href="Colormap.js.html">Colormap.js</a>,
<a href="Colormap.js.html#sunlight-1-line-346">line 346</a>
</li>
</ul>
</dd>
</dl>
<h5>Returns:</h5>
<div class="param-desc">
<p>Array containing [min, max] of domain</p>
</div>
<dl>
<dt>
Type
</dt>
<dd>
<span class="param-type">Array.<number></span>
</dd>
</dl>
</dd>
<hr>
<dt>
<h4 class="name" id="sample"><span class="type-signature"></span>sample(maxSteps)</h4>
</dt>
<dd>
<div class="description">
<p>Samples the colormap into a buffer.</p>
</div>
<h5>Parameters:</h5>
<table class="params table table-striped">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>maxSteps</code></td>
<td class="type">
<span class="param-type">number</span>
</td>
<td class="description last"><p>Number of samples to generate</p></td>
</tr>
</tbody>
</table>
<dl class="details">