Код:
var numZ:Number;
var numAngle:Number=0;
var numPer:Number;
var numR:Number=200;
function rotate(xCenter:Number,yCenter:Number,clip:MovieClip,angle:Number){
numAngle+=angle;
numZ=Math.cos(numAngle)*numR;
numPer=1000/(1000-numZ);
clip._x=xCenter+Math.sin(numAngle);
clip._xscale=clip._yscale=numPer;
}