How draw( ) handles Alpha channel values

How draw( ) handles Alpha channel values : BitmapData : Graphics Flash / Flex / ActionScript examples


 
package{
  import flash.display.*;
    import flash.utils.*;
  import flash.events.*;
  import flash.geom.*;
  import flash.text.*;
  public class Main extends Sprite{
    public function Main(){


        var redSquare:BitmapData = new BitmapData(20, 20, true, 0xFFFF0000);
        var blueSquare:BitmapData = new BitmapData(20, 20, true, 0xFF0000FF);
        
        var sourceRect:Rectangle = new Rectangle(5, 5, 10, 5);
        
        var destPoint:Point = new Point(0,0);
        
        redSquare.copyPixels(blueSquare, sourceRect, destPoint);
        
        var b:Bitmap = new Bitmap(redSquare);
        addChild(b);

    }
  }
}

How draw( ) handles Alpha channel values : BitmapData : Graphics Flash / Flex / ActionScript examples

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How draw( ) handles Alpha channel values

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