Thanks for that guys - I've been pulling my hair out for days trying to solve a dynamically changing perspectiveProjection center - one that responded to a users mouse move. Here was my solution, thanks!
(the Box3d is a separate class that builds a box)
package com {
import flash.events.*;
import flash.display.*;
import flash.geom.*;
import com.greensock.*;
import com.common.Box3d;
public class DynamicProjectionCenter extends Sprite {
private var _box:Box3d;
private var _perspectivePoint:*;
private var _currentX:Number;
private var _currentY:Number;
public function Hotdraw() {
_box = new Box3d();
addChild(_box);
_currentX = this.stage.stageWidth /2;
_currentY = this.stage.stageHeight /2;
_box.x = _currentX - (_box.width/2);
_box.y = _currentY - (_box.height/2);;
_box.z = -1;
_perspectivePoint = root.transform.perspectiveProjection.projectionCenter = new Point(_currentX,_currentY);
stage.addEventListener(MouseEvent.MOUSE_MOVE, updatePerspective);
}//end constructor
private function updatePerspective(evt:MouseEvent):void{
TweenLite.to(_perspectivePoint, 1, {x:evt.stageX, y:evt.stageY, onUpdate:applyPoint});
}
private function applyPoint():void {
root.transform.perspectiveProjection.projectionCenter = _perspectivePoint;
}
}// end class
}//end package
