you don't need to change the code below the dotted line:
to scale any display object from startZoom to endZoom in steps number of steps, you can call startScaleF(). for example:
startScaleF(mc1,1,4,100); // to scale mc1 from 100% to 400% in 100 steps
startScaleF(mc2,1,-4,100); // to scale mc2 from 100% to -400% in 100 steps
startScaleF(mc3,.1,-5.2,40); // to scale mc3 from 10% to -520% in 40 steps
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function startScaleF(dobj:DisplayObject,startZoom:Number,endZoom:Number,steps: uint):void{
var mc:MovieClip = new MovieClip();
mc.step = 1;
mc.dobj = dobj;
mc.startZoom = startZoom;
mc.endZoom = endZoom;
mc.steps = steps;
dobj.scaleX = dobj.scaleY = startZoom;
mc.addEventListener(Event.ENTER_FRAME,scaleF);
}
function scaleF(e:Event):void{
e.currentTarget.dobj.scaleX = e.currentTarget.dobj.scaleY += (e.currentTarget.endZoom-e.currentTarget.startZoom)/e.currentTarget.s teps;
if(e.currentTarget.step>=e.currentTarget.steps){
e.currentTarget.removeEventListener(Event.ENTER_FRAME,scaleF);
} else {
e.currentTarget.step++;
}
}
