AS 3.0 弹性效果

 package{
 import fl.transitions.*;
 import fl.transitions.easing.*;
 import flash.display.Sprite;
 
 public class backt extends Sprite{
  
  public function backt(){
   var ball1 = Ball();
   var ball2 = Ball();
   var ball3 = Ball();
   var ball4 = Ball();
   var ball5 = Ball();
   ball1.x = 50;
   ball1.y = 50;
   addChild(ball1);
   
   ball2.x = 50;
   ball2.y = 150;
   addChild(ball2);
   
   ball3.x = 50;
   ball3.y = 250;
   addChild(ball3);
   
   ball4.x = 50;
   ball4.y = 350;
   addChild(ball4);
   
   ball5.x = 50;
   ball5.y = 450;
   addChild(ball5);
   //正弦弹性
   var myTween1:Tween = new Tween(ball1,"x",Elastic.easeIn,ball1.x,400,3,true);
   //折射效果
      var myTween2:Tween = new Tween(ball2,"x",Back.easeIn,ball2.x,400,3,true);
   //运动回弹
   var myTween3:Tween = new Tween(ball3,"x",Bounce.easeIn,ball3.x,400,3,true);   
   var myTween4:Tween = new Tween(ball4,"x",Regular.easeIn,ball4.x,400,3,true);
   var myTween5:Tween = new Tween(ball5,"x",Strong.easeIn,ball5.x,400,3,true);
   
   myTween1.looping = true;
   myTween2.looping = true;
   myTween3.looping = true;
   myTween4.looping = true;
   myTween5.looping = true;
   }
  
  public function Ball():Sprite{
   var sp:Sprite = new Sprite();
   sp.graphics.beginFill(Math.random()*0xFFFFFF);
   sp.graphics.drawCircle(0,0,30);
   sp.graphics.endFill();
   return sp;
   }
   }
 
 }