flash on 2010-4-17 ActionScript3.0アニメーション

/**
 * Copyright albatrus_jp ( http://wonderfl.net/user/albatrus_jp )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/zfdT
 */

package {
    import flash.display.Sprite;
    import flash.display.Bitmap;
    import flash.display.BitmapData;
    import flash.display.StageAlign;
    import flash.display.StageScaleMode;
    import flash.geom.Rectangle;
    
    public class FlashTest extends Sprite {
        public function FlashTest() {
            
            stage.align =StageAlign.TOP_LEFT;
            stage.scaleMode = StageScaleMode.NO_SCALE;
            
            graphics.lineStyle(0);
            for(var i:int =0; i<100; i++){
            	   graphics.lineTo(Math.random() * 300, 
            	                   Math.random() * 400);
            }
  
            
            var bmp:BitmapData = new BitmapData(300,200,false,0xffffff);
            bmp.fillRect(new Rectangle(100,50,100,100),0xff0000);
            
            var bmp1:Bitmap = new Bitmap(bmp);
            addChild(bmp1);
            
            var bmp2:BitmapData = new BitmapData(300,200,true,0x00ffffff);
            bmp2.fillRect(new Rectangle(100,50,100,100),0x80FF0000);
            
            var bmp3:Bitmap = new Bitmap(bmp2);
            bmp3.y = 200;
            bmp3.alpha = 0.5;
            addChild(bmp3);
            
            
                      
        }
    }
}