private function init():void
    {
     stage.scaleMode = StageScaleMode.NO_SCALE;
     stage.align = StageAlign.TOP_LEFT;
     
     segment0 = new animation_ch13_Segment(100, 20);
     addChild(segment0);
     segment0.x = 200;
     segment0.y = 100;
     
     segment1 = new animation_ch13_Segment(100, 20);
     addChild(segment1);
     segment1.x = segment0.getPin().x;
     segment1.y = segment0.getPin().y;
     
     addEventListener(Event.ENTER_FRAME, onEnterFrame);
    }
  
frame(s) 

    private function onEnterFrame(event:Event):void
    {
     cycle += .05;
     var angle0:Number = Math.sin(cycle) * 45 + 90;
     var angle1:Number = Math.sin(cycle) * 45 + 45;
     segment0.rotation = angle0;
     segment1.rotation = segment0.rotation + angle1;
     segment1.x = segment0.getPin().x;
     segment1.y = segment0.getPin().y;
    }
   }
  }