package {
    import flash.display.Sprite;
    import flash.events.Event;
    public class TwoSegments2 extends Sprite {
        private var slider0:SimpleSlider;       
        private var slider1:SimpleSlider;
        private var segment0:Segment;
        private var segment1:Segment;
         
        public function TwoSegments2() {
            init();
        }
        private function init():void {
            segment0=new Segment(100,20);
            addChild(segment0);
            segment0.x=50;
            segment0.y=150;
            segment1=new Segment(100,20);
            addChild(segment1);
             
            //关键：segment1的固定端连接到segment0的自由端
            segment1.x=segment0.getPin().x;
            segment1.y=segment0.getPin().y;
             
            slider0=new SimpleSlider(-90,90,0);
            addChild(slider0);
            slider0.x=320;
            slider0.y=90;
            slider0.addEventListener(Event.CHANGE,onChange);
            slider1=new SimpleSlider(-160,0,0);
            addChild(slider1);
            slider1.x=340;
            slider1.y=90;
            slider1.addEventListener(Event.CHANGE,onChange);
        }
        private function onChange(event:Event):void {
            segment0.rotation=slider0.value;
            segment1.rotation=slider1.value + segment0.rotation;//注意这行
            segment1.x=segment0.getPin().x;
            segment1.y=segment0.getPin().y;
        }
    }
}