一个简单的单摆

 var mc:MovieClip=new MovieClip;addChild(mc);var hd:Number=0mc.graphics.lineStyle(5,0);mc.graphics.moveTo(0,0);mc.graphics.lineTo(0,250);mc.graphics.beginFill(0x123456);mc.graphics.drawCircle(0,250,50);mc.graphics.endFill();mc.x=275;this.addEventListene(Event.ENTER_FRAME,onHandler)function onHandler(e:Event):void{hd+=Math.PI*2/48mc.rotation = Math.sin(hd)*45}