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Flash 8 Actionscript 2.0 Knowledgebase
Pulsating Scale (SHM)  

Download .fla

Actionscript

var angle = 0;
var start_scale = 100;
var amplitude = 50;

onEnterFrame = function (){
ball_mc._yscale = start_scale + amplitude*Math.sin((angle*Math.PI)/180);
ball_mc._xscale = start_scale + amplitude*Math.sin((angle*Math.PI)/180);
angle += 5;
}


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