How do you read the camera position in the 3d picture control?

Hello,
There is a method to setup the camera position, but how do you read the current camera position?  e.g. the user uses the mouse, ctrl, and shift, to change the camera position.  How do you read this new camera position?  There don't seem to be any properties to do this.
I've read this thread:
http://forums.ni.com/ni/board/message?board.id=170&message.id=214629&requireLogin=False
but the question was never answered....
From the comments in that thread, even if you had the proper documentation for the "Model Matrix" property, you couldn't get the information necessary to calculation the camera position.

Lorielle,
Thanks for the VI.
Could you point me towards a more detailed description of the "Modelview Matrix" property?  I've attached a screenshot from the online help.  It is not very helpful.
Attachments:
Modelview Matrix.jpg ‏71 KB
Modelview Matrix1.jpg ‏71 KB

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