package
  {
          import flash.display.Sprite;
          import flash.events.Event;
          
          public class @ax-animation-ch05-RotationalVelocity extends Sprite
          {
                  private var arrow:animation_ch05_Arrow;
                  private var vr:Number = 5;
                  
                  public function @ax-animation-ch05-RotationalVelocity()
                  {
                          init();
                  }
                  
                  private function init():void
                  {
                          arrow = new animation_ch05_Arrow();
                          addChild(arrow);
                          arrow.x = stage.stageWidth / 2;
                          arrow.y = stage.stageHeight / 2;
                          addEventListener(Event.ENTER_FRAME, onEnterFrame);
                  }
                  private function onEnterFrame(event:Event):void
                  {
                          arrow.rotation += vr;
                  }
          }
  }