topical media & game development
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

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animation-ch10-Rotate2.ax

animation-ch10-Rotate2.ax [swf] [flash] flex 


  package
  {
   import flash.display.Sprite;
   import flash.events.Event;
   import flash.display.StageScaleMode;
   import flash.display.StageAlign;
  
   public class @ax-animation-ch10-Rotate2 extends Sprite
   {
    private var ball:animation_ch10_Ball;
    private var vr:Number = .05;
    private var cos:Number = Math.cos(vr);
    private var sin:Number = Math.sin(vr);
    
    public function @ax-animation-ch10-Rotate2()
    {
     init();
    }

init(s) 


    private function init():void
    {
     stage.scaleMode = StageScaleMode.NO_SCALE;
     stage.align = StageAlign.TOP_LEFT;
     ball = new animation_ch10_Ball();
     addChild(ball);
     ball.x = Math.random() * stage.stageWidth;
     ball.y = Math.random() * stage.stageHeight;
     addEventListener(Event.ENTER_FRAME, onEnterFrame);
    }

frame(s) 


    private function onEnterFrame(event:Event):void
    {
     var x1:Number = ball.x - stage.stageWidth / 2;
     var y1:Number = ball.y - stage.stageHeight / 2;
     var x2:Number = cos * x1 - sin * y1;
     var y2:Number = cos * y1 + sin * x1;
     ball.x = stage.stageWidth / 2 + x2;
     ball.y = stage.stageHeight / 2 + y2;
    }
   }
  }
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

(C) Æliens 04/09/2009

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