Change color of rings dynamically

Fovea · Apr 13, 2015 · 0ed9c07 · 0ed9c07
1 parent a16e365
commit 0ed9c07
Showing 1 changed file with 10 additions and 1 deletion.
diff --git a/src/starling/display/Ring.as b/src/starling/display/Ring.as
@@ -26,12 +26,14 @@ package starling.display
         private var _innerRadius:Number;
         private var _outerRadius:Number;
         private var _outerRadius2:Number;
+        private var _polygons:Vector.<Poly4>;
 
         public function get innerRadius():Number { return _innerRadius; }
         public function get outerRadius():Number { return _outerRadius; }
 
         public function Ring(innerRadius:Number, outerRadius:Number, color:uint=0xffffff, premultipliedAlpha:Boolean=true)
         {
+            _polygons = new Vector.<Poly4>;
             _innerRadius = innerRadius;
             _outerRadius = outerRadius;
             _outerRadius2 = outerRadius * outerRadius;
@@ -41,7 +43,7 @@ package starling.display
             var p1:Point = new Point();
             var nParts:int = Math.max(Math.round(outerRadius * 1.0), 8);
             var angle:Number = 0;
-            for (var i:int = 0; i <= nParts; ++i) {
+            for (var i:int = 0; i < nParts; ++i) {
                 var a0:Number = (i + 0.0) * 2.0 * Math.PI / nParts;
                 var a1:Number = (i + 1.0) * 2.0 * Math.PI / nParts;
                 var ca0:Number = Math.cos(a0);
@@ -57,10 +59,17 @@ package starling.display
                 p1.x = outerRadius + ca1 * outerRadius;
                 p1.y = outerRadius + sa1 * outerRadius;
                 var q:Poly4 = new Poly4(c0, p0, c1, p1, color, premultipliedAlpha);
+                _polygons.push(q);
                 addChild(q);
             }
         }
 
+        public function set color(value:uint):void {
+            for (var i:int = 0; i < _polygons.length; ++i) {
+                _polygons[i].color = value;
+            }
+        }
+
         public override function hitTest(localPoint:Point, forTouch:Boolean = false):DisplayObject {
             // on a touch test, invisible or untouchable objects cause the test to fail
             if (forTouch && (!visible || !touchable)) return null;