package
{
	import flash.display.Sprite;
	import flash.events.Event;
	import flash.geom.Matrix;
	import flash.display.StageAlign;
	import flash.display.StageScaleMode;

	public class animation_ch18_SkewXY extends Sprite
	{
		private var box:Sprite;
		
		public function animation_ch18_SkewXY()
		{
			init();
		}
		
		private function init():void
		{
			stage.align = StageAlign.TOP_LEFT;
			stage.scaleMode = StageScaleMode.NO_SCALE;
			box = new Sprite();
			box.graphics.beginFill(0xff0000);
			box.graphics.drawRect(-50, -50, 100, 100);
			box.graphics.endFill();
			addChild(box);
			addEventListener(Event.ENTER_FRAME, onEnterFrame);
		}
		
		private function onEnterFrame(event:Event):void
		{
			var skewX:Number = (mouseX - stage.stageWidth / 2) * .01;
			var skewY:Number = (mouseY - stage.stageHeight / 2) * .01;
			box.transform.matrix = new Matrix(1,     skewY, 
											  skewX, 1, 
											  stage.stageWidth / 2,
											  stage.stageHeight / 2);
		}
	}
}