Tips Membuat Efek Zoom Pada Flash

import flash.display.BitmapData;

addProperty("_x2",get_x2,set_x2);
addProperty("_y2",get_y2,set_y2);
addProperty("_xscale2",get_xscale2,set_xscale2);
addProperty("_yscale2",get_yscale2,set_yscale2);
addProperty("_rotation2",get_rotation2,set_rotation2);

var oldScaleMode:String = stage.scaleMode;
stage.scaleMode = "exactFit";

var sW:Number = Stage.width;
var sH:Number = Stage.height;

stage.scaleMode = oldScaleMode;

var bounds_obj:Object = this.getBounds(this);

var camH:Number = Math.abs(bounds_obj.yMax-bounds_obj.yMin);
var camW:Number = Math.abs(bounds_obj.xMax-bounds_obj.xMin);

var rp = {x:this._x, y:this._y};

onEnterFrame = function ():Void {
camControl();
};

function camControl():Void {

   
rp.x = _x;
rp.y = _y;
var h:Number = camH*(_yscale*.01);
var w:Number = camW*(_xscale*.01);
var _scaleY:Number = sH/h;
var _scaleX:Number = sW/w;

   
_x2 = (w/2)*_scaleX;
_y2 = (h/2)*_scaleY;
_xscale2 = _scaleX*100;
_yscale2 = _scaleY*100;
_rotation2 = -_rotation;

   
_parent.filters = this.filters;
_parent.transform.colorTransform = this.transform.colorTransform;
}

this.onUnload = reset;

function reset():Void {

   
_parent._xscale = 100;
_parent._yscale = 100;
_parent._x = 0;
_parent._y = 0;
_parent._rotation = 0;
_parent._visible = true;
}

function set_x2(value:Number):Void {
var a = {x:rp.x, y:rp.y};
_parent.localToGlobal(a);
_parent._x += value-a.x;
}
function get_x2():Number {
var a = {x:rp.x, y:rp.y};
_parent.localToGlobal(a);
return a.x;
}

function set_y2(value:Number):Void {
var a = {x:rp.x, y:rp.y};
_parent.localToGlobal(a);
_parent._y += value-a.y;
}
function get_y2():Number {
var a = {x:rp.x, y:rp.y};
_parent.localToGlobal(a);
return a.y;
}

function get_xscale2():Number {
return _parent._xscale;
}
function set_xscale2(value:Number):Void {
setProperty2("_xscale",value);
}

function get_yscale2():Number {
return _parent._yscale;
}

function set_yscale2(value:Number):Void {
setProperty2("_yscale",value);
}

function get_rotation2():Number {
return parent.rotation;
}
function set_rotation2(value:Number):Void {
setProperty2("_rotation",value);
}

function setProperty2(prop:String, n:Number):Void {
var a = {x:rp.x, y:rp.y};
_parent.localToGlobal(a);
_parent[prop] = n;
var b = {x:rp.x, y:rp.y};
_parent.localToGlobal(b);
_parent._x -= b.x-a.x;
_parent._y -= b.y-a.y;
}

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