Textured brush effect

[.hooligan]

I managed to get it to work like this.

package {
    
    import flash.display.*;
    import flash.geom.Point;
    
    public class Main extends Sprite {
        
        private var grass:Grass;
        private var trans:Trans;
        
        public function Main() {
            
            grass = new Grass(0,0);
            trans = new Trans(0,0);
            
            var emptyBitmap:BitmapData = new BitmapData(200,200);
            
            emptyBitmap.copyChannel(grass, grass.rect, new Point(0,0), 1, 1);
            emptyBitmap.copyChannel(grass, grass.rect, new Point(0,0), 2, 2);
            emptyBitmap.copyChannel(grass, grass.rect, new Point(0,0), 4, 4);
            
            emptyBitmap.copyChannel(trans, trans.rect, new Point(0,0), BitmapDataChannel.ALPHA, BitmapDataChannel.ALPHA);

            var finalBitmap = new Bitmap(emptyBitmap);
            
            addChild(finalBitmap);
        }
        
    }
}