[RESOLVED] Does localToGlobal work with z coordinate?

[moosefetcher]

Hey there.
I've got a carousel that holds images and rotates on its vertical (Y) axis (like a merry-go-round).
I need to depth sort the images while the whole carousel rotates. My problem is, as it's the whole carousel that rotates, the individual images' x and z coordinates do not change. I need some way of extracting each image's Z coordinate relative to the stage to find which is nearest. There doesn't appear to be a 3D version of localToGlobal, but is there a way to use it to extract a Z coordinate? Or is there another way to do this?
Here's the main class:

package {
	import flash.display.MovieClip;
	import flash.events.*;
	import flash.geom.Point;

	public class DocumentClass extends MovieClip {
		var count:int;
		const numberOfPictures:int = 7;
		const holderRadius:int = 480;
		var pictureHolder:PictureHolder;
		
		public function DocumentClass():void {
			pictureHolder = new PictureHolder(numberOfPictures,holderRadius);
			pictureHolder.x = 350;
			pictureHolder.y = 200;
			pictureHolder.z = holderRadius;
			addChild(pictureHolder);
			stage.addEventListener(Event.ENTER_FRAME, updateRotation);
		};
		public function updateRotation(e:Event):void {
			pictureHolder.rotationY +=1;
			// depth sorting code needs to go here!
			for (count=0;count<=numberOfPictures-1;count++) {
				pictureHolder.pictures[count].rotationY -=1;
			};
		};
	};
};

The PictureHolder class just instantiates a number of RotatingImages, which themselves have methods for positioning themselves in a circle, dependent on the carousel's radius and their number in the sequence.

Any help appreciated!
Cheers.