private function onEnterFrame(event:Event):void
    {
     var dx:Number = mouseX - sprite.x;
     var dy:Number = mouseY - sprite.y;
     
     filter.distance = -Math.sqrt(dx * dx + dy * dy) / 10;
     filter.angle = Math.atan2(dy, dx) * 180 / Math.PI;
     sprite.filters = [filter];
    }
   }
  }