ACTIONSCRIPT 3 Developer’s Guide en

ACTIONSCRIPT 3.0 DEVELOPER’S GUIDE
Working with Pixel Bender shaders
package
{
import flash.display.Shader;
import flash.display.Sprite;
import flash.events.Event;
import flash.geom.Point;
import flash.net.URLLoader;
import flash.net.URLLoaderDataFormat;
import flash.net.URLRequest;
public class ThreePointGradient extends Sprite
{
private var canvas:Sprite;
private var shader:Shader;
private var loader:URLLoader;
private var topMiddle:Point;
private var bottomLeft:Point;
private var bottomRight:Point;
private var colorAngle:Number = 0.0;
private const d120:Number = 120 / 180 * Math.PI; // 120 degrees in radians
public function ThreePointGradient()
{
init();
}
private function init():void
{
canvas = new Sprite();
addChild(canvas);
}
var size:int = 400;
topMiddle = new Point(size / 2, 10);
bottomLeft = new Point(0, size - 10);
bottomRight = new Point(size, size - 10);
loader = new URLLoader();
loader.dataFormat = URLLoaderDataFormat.BINARY;
loader.addEventListener(Event.COMPLETE, onLoadComplete);
loader.load(new URLRequest("ThreePointGradient.pbj"));
private function onLoadComplete(event:Event):void
{
shader = new Shader(loader.data);
}
shader.data.point1.value = [topMiddle.x, topMiddle.y];
shader.data.point2.value = [bottomLeft.x, bottomLeft.y];
shader.data.point3.value = [bottomRight.x, bottomRight.y];
addEventListener(Event.ENTER_FRAME, updateShaderFill);
private function updateShaderFill(event:Event):void
Last updated 6/6/2012
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