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AS3 Elastic Tween Formula

/ Published in: ActionScript 3
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  1. vx += (targetX - sprite.x) * spring; //'spring': elastic coefficient 
  2. vy += (targetY - sprite.y) * spring;
  3.  
  4. sprite.x += (vx *= friction); //'friction': friction force 
  5. sprite.y += (vy *= friction); 
  6.  
  7.  
  8. //use it inside an OnEnterFrame event handler

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