Dynamic Drawing AS3

A uma semana respondi sobre o assunto, então resolvi colocar aqui.

A classe retorna um objeto UIComponent extendido que contém um Sprite.

package lib
{
    import mx.core.UIComponent;
    import flash.display.Sprite;
    import flash.events.MouseEvent
    
    public class Circle extends UIComponent{
        
        private var c:Sprite;
        
        public function Circle(){
            super();
            c = new Sprite();
            c.graphics.beginFill(0xFFCC00);
            c.graphics.drawCircle(100, 100, 50);
              this.addChild(c);
        }    
        
        private function DownHandler(event:MouseEvent):void
        {
            var sprite:Sprite = Sprite(event.target);
            sprite.startDrag();
        }
        
          private function UpHandler(event:MouseEvent):void{
            var sprite:Sprite = Sprite(event.target);
            sprite.stopDrag();
          }
          
          [Inspectable(category="General")]
        public function enableDrag(enable:Boolean):void{
            if(enable){
                  c.addEventListener(MouseEvent.MOUSE_DOWN, DownHandler);
                  c.addEventListener(MouseEvent.MOUSE_UP, UpHandler);
            }else{
                c.removeEventListener(MouseEvent.MOUSE_DOWN, DownHandler);
                c.removeEventListener(MouseEvent.MOUSE_UP, UpHandler);
            }
        }

    }
    
}