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MaRmAR on 11/29/10

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# AS3: Circle pie

/ Published in: ActionScript 3  Copy&paste into new document and move your mouse.

Copy this code and paste it in your HTML
`[SWF(width=400,height=400,backgroundColor=0xEFEFEF,frameRate=30)]Ã‚Â const TWO_PI:Number = Math.PI * 2;Ã‚Â var resolution:Number = 50;var step:Number = TWO_PI / resolution;var maxIndex:int = 0;Ã‚Â var coords:Vector.<Number> = new Vector.<Number>();var drawCommands:Vector.<int> = new Vector.<int>();Ã‚Â // populate vectorsfor (var i:Number = 0; i <TWO_PI + step; i += step){Ã‚Â  Ã‚Â  coords.push(100 * Math.cos(i));Ã‚Â  Ã‚Â  coords.push(100 * Math.sin(i));Ã‚Â  Ã‚Â  drawCommands.push(GraphicsPathCommand.LINE_TO);}Ã‚Â var circleSegment:Shape = new Shape();circleSegment.x = circleSegment.y = 200;addChild(circleSegment);Ã‚Â addEventListener(Event.ENTER_FRAME, onLoop);function onLoop(evt:Event):void {Ã‚Â  Ã‚Â  with (circleSegment.graphics) {Ã‚Â  Ã‚Â  Ã‚Â  Ã‚Â  clear();Ã‚Â  Ã‚Â  Ã‚Â  Ã‚Â  beginFill(0x000000);Ã‚Â  Ã‚Â  Ã‚Â  Ã‚Â Ã‚Â  Ã‚Â  Ã‚Â  Ã‚Â  // count by two, up to coords.length (drawCommands is exactly half the length of coords)Ã‚Â  Ã‚Â  Ã‚Â  Ã‚Â  maxIndex = Ã‚Â Math.ceil((mouseX / stage.stageWidth) Ã‚Â * drawCommands.length) * 2;Ã‚Â Ã‚Â  Ã‚Â  Ã‚Â  Ã‚Â  drawPath(drawCommands, coords.slice(0, maxIndex));Ã‚Â  Ã‚Â  }}` Subscribe to comments