卫生纸效果,哈哈

package
{
    import flash.display.Sprite;
    import flash.display.StageAlign;
    import flash.display.StageScaleMode;
    import flash.events.Event;
    import flash.geom.Point;
    import flash.text.TextField;
    import flash.text.TextFieldAutoSize;

    public class BallV1 extends Sprite
    {
        private var textArr:Array=[];
        private var textLen:int=10;
        //private var str:String="2012年12月12日,世界屌丝日,屌丝们,赶紧了";
        private var str:String="日本近期在钓鱼岛问题上小动作频频,实际上是测试中国在钓鱼岛上的态度和策略，";
        private var spring:Number=.2;

        private var rand:Number=150;
        private var sp:Number=0;
        private var f:Number=0;

        public function BallV1()
        {
            super();
            stage.scaleMode=StageScaleMode.NO_SCALE;
            stage.align=StageAlign.TOP_LEFT;
            init();
        }

        private function init():void
        {
            sp=(360 / str.length) * (Math.PI / 180);

            trace(sp, (360 / str.length), str.length, "===========");

            for (var i:int=0; i < str.length; i++)
            {
                var text:WordSpr=new WordSpr;
                text.text=str.charAt(i);

                textArr.push(text);

                this.addChild(text);
            }

            this.addEventListener(Event.ENTER_FRAME, onEnterFrame);
        }

        private function onEnterFrame(e:Event):void
        {

//            var ball:WordSpr=textArr[0];
//
//
//            var ax:Number=(mouseX - ball.x) * spring;
//            var ay:Number=(mouseY - ball.y) * spring;
//
//            ball.vx=ax;
//            ball.vy=ay;
//
//            ball.x+=ball.vx;
//            ball.y+=ball.vy;


            var ax:Number=0;
            var ay:Number=0;
            var angle:Number=0;
            var ball2:WordSpr;

            for (var i:int=0; i < str.length; i++)
            {
                var ball1:WordSpr=textArr[i];

                if (Point.distance(new Point(ball1.x, ball1.y), new Point(mouseX, mouseY)) > rand)
                {
                    if (i == 0)
                    {
                        
                        ball1.vx=(mouseX - ball1.x) * spring;
                        ball1.vy=(mouseY - ball1.y) * spring;

                    }
                    else
                    {
                        ball2=textArr[i - 1];
//
//                        angle=Math.atan2(ball2.y - mouseY, ball2.x - mouseX);
//                        angle+=sp;
//
//                        ay=mouseY + Math.sin(angle) * rand;
//                        ax=mouseX + Math.cos(angle) * rand;
//
//                        ball1.vy+=(ay - ball1.y) * spring;
//                        ball1.vx+=(ax - ball1.x) * spring;

                        ball1.vx=(ball2.x - ball1.x) * spring;
                        ball1.vy=(ball2.y - ball1.y) * spring;

                        ball1.vy*=.99;
                        ball1.vx*=.99;
                    }

                    ball1.x+=ball1.vx;
                    ball1.y+=ball1.vy;
                }
                else
                {
                    var r:Number=rand - (str.length - i) * (str.length / ball1.height);

                    if (i == 0)
                    {
                        if (Point.distance(new Point(ball1.x, ball1.y), new Point(mouseX, mouseY)) > r)
                        {
                            ball1.vx=(mouseX - ball1.x) * spring;
                            ball1.vy=(mouseY - ball1.y) * spring;

                            //ball1.vx*=.03;
                            //ball1.vy*=.03;
                            
                            ball1.x+=ball1.vx;
                            ball1.y+=ball1.vy;
                        }

                        var n:Number=.06;

                        var dx:Number=(ball1.x - mouseX);
                        var dy:Number=(ball1.y - mouseY);

                        ball1.vx=Math.cos(n) * dx + Math.sin(n) * dy;
                        ball1.vy=Math.cos(n) * dy - Math.sin(n) * dx;

                        ball1.x=mouseX + ball1.vx;
                        ball1.y=mouseY + ball1.vy;
                    }
                    else
                    {

                        ball2=textArr[i - 1];
                        
//                        if (Point.distance(new Point(ball1.x, ball1.y), new Point(mouseX, mouseY)) > r)
//                        {
//                            ball1.vx=(mouseX - ball1.x) * spring;
//                            ball1.vy=(mouseY - ball1.y) * spring;
//
//                            ball1.vx*=.03;
//                            ball1.vy*=.03;
//
//                            ball1.x+=ball1.vx;
//                            ball1.y+=ball1.vy;
//                        }
                        
                        angle=Math.atan2(ball2.y - mouseY, ball2.x - mouseX);
                        angle+=sp/(str.length*i);

                        ay=mouseY+Math.sin(angle) * r;
                        ax=mouseX+Math.cos(angle) * r;

                        ball1.vy=(ay - ball1.y) * spring;
                        ball1.vx=(ax - ball1.x) * spring;

                        //ball1.vx=(ball2.x - ball1.x) * spring;
                        //ball1.vy=(ball2.y - ball1.y) * spring;

                        //ball1.vy*=1.6;
                        //ball1.vx*=1.6;

                        ball1.x+=ball1.vx;
                        ball1.y+=ball1.vy;

                    }
                }
            }

        }

    }
}

卫生纸效果......................

 

 

package
{
    import flash.display.Sprite;
    import flash.text.TextField;
    import flash.text.TextFieldAutoSize;
    
    public class WordSpr extends Sprite
    {
        public var vx:Number=0;
        public var vy:Number=0;
        
        private var ttf:TextField;
        
        public function WordSpr()
        {
            ttf=new TextField;
            //ttf.border=true;
            
            this.addChild(ttf);
            ttf.autoSize=TextFieldAutoSize.CENTER;
        }
        
        public function set text(_s:String):void
        {
            ttf.text=_s;
        }
        
        
        
    }
}