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MovieClip.alphaTo

make a movie clip alpha dynamically using this cool proto

Submitted By: reyco1
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Views: 4,252

Language: ActionScript
Last Modified: April 4, 2005
Instructions: you know the drill, plug the proto on to the first frame of your movie. an example of the usage is in the script

Snippet


  1. MovieClip.prototype.alphaTo = function(targetAlpha, speed) {
  2.      this.onEnterFrame = function() {
  3.           alphaDifference = Math.abs(this._alpha-targetAlpha);
  4.           if (this._alpha>targetAlpha) {
  5.                this._alpha -= alphaDifference/speed;
  6.           } else if (this._alpha<targetAlpha) {
  7.                this._alpha += alphaDifference/speed;
  8.           } else if (this._alpha == targetAlpha) {
  9.                delete this.onEnterFrame;
  10.           }
  11.      };
  12. };
  13. //
  14. /////////////usage////////////////////////
  15. ////myImage.alphaTo(targetAlpha, speed)///
  16. //////////////////////////////////////////
  17. //
  18. myButton.onRelease = function() {
  19.      _root.myImage.alphaTo(0, 4);
  20. };

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