[Zebestov]

Короче вот:

import flash.geom.Matrix;
import flash.display.Bitmap;
import flash.geom.Point;
import flash.events.Event;
 
var bmp:Bitmap = new Bitmap(new BMP());
bmp.x = (stage.stageWidth - bmp.width) / 2;
bmp.y = (stage.stageHeight - bmp.height) / 2;
addChild(bmp);
 
var mtx:Matrix = bmp.transform.matrix;
var pt:Point = new Point(stage.stageWidth / 2 - 100, stage.stageHeight / 2 - 100);
 
var scale:Number = 0.0;
 
addEventListener(Event.ENTER_FRAME, onEnterFrameHandler);
 
function onEnterFrameHandler(event:Event):void
{
	scale += 0.01;
	scale <= 1.0 && scaleAroundPoint(bmp, pt, scale);
}
 
function scaleAroundPoint(target:DisplayObject, point:Point, scaleFactor:Number) {
	var m:Matrix = mtx.clone();
	m.translate(-point.x, -point.y);
	m.scale(scaleFactor, scaleFactor);
	m.translate(point.x, point.y);
	target.transform.matrix = m;
}