Can I use jpg as mask?

programming flash
1

Hi,

I wanted to put on the stage a png file with some transparent areas, unfortunately it weight too much.
So instead I thought I’ll create a shape object and use jpeg image as it’s mask…

This is my code:

package {

 import flash.display.Bitmap;
 
 import flash.display.Shape;
 import flash.display.MovieClip;
 
 import flash.display.Loader;
 import flash.net.URLRequest;
 
 import flash.events.Event;
 
 public class Map extends MovieClip {
  
  private var color    :Shape   = new Shape;
  private var map     :Bitmap   = new Bitmap;
  private var loader    :Loader   = new Loader();   
  
  public function Map():void {
   
   color.graphics.beginFill(0xFF0000, 1);
   color.graphics.drawRect(0, 0, stage.stageWidth, stage.stageHeight);
   color.graphics.endFill();
   
   loader.load(new URLRequest("map.jpg"));
   loader.contentLoaderInfo.addEventListener(Event.COMPLETE, draw);
  }
  
  private function draw(e:Event):void {
   
   loader.contentLoaderInfo.removeEventListener(Event.COMPLETE, draw);
   
   map = loader.content as Bitmap;
   
   addChild(color);
   color.mask = map;
  }
 }
}

And it doesn’t work, can I use jpeg images to mask the shape at all?

Thx
Z