Zoom Effect

talk open source
1

Hey everyone,
This is an effect seen on the home page and the various section pages on the site. Rab asked about a tutorial about it here, http://www.kirupa.com/forum/showthread.php?t=82207, so I figure I’ll provide the source file for it now and a tutorial for it when I have more time.

The code on the movie clip:

onClipEvent (load) {
 this._x = Math.round(Math.random()*550);
 this._y = Math.round(Math.random()*120);
 this._xscale = this._yscale = Math.round(Math.random()*50);
 this._alpha = 0;
 x = -10;
 n = 0;
 speed = Math.round(.1+Math.random() * 2);
}
onClipEvent (enterFrame) {
 if (x<10) {
  num = -(Math.pow(x,2))+100;
  n++;
  x += speed;
  this._alpha = num/(1.5*speed);
  this._xscale = this._yscale=(num*speed);
  if (n==((10/speed)*2)) {
   n = 0;
   this._x = Math.round(Math.random()*550);
   this._y = Math.round(Math.random()*120);
   this._xscale = this._yscale = Math.round(Math.random()*50);
   speed = Math.round(.5+Math.random() * 2);
  }
 } else {
  x = -10;
 }
}

The code on the first frame:

for (var i = 0; i<25; i++) {
 circle.duplicateMovieClip(i, i);
}

The attached source file (MX) contains the same as above.

Cheers!
Kirupa :ninja: