> Hi,
> The problem is that the redering process necessarily
> looses information
> in the conversion from 3D to 2D and there is no way to go back and
> explicitly reconstruct it.
Forgive my ignorance, I've never written a line of Java 3D,
All you need is the inverted projection matrix,
the screen coordinates, and the
depth value from the z-buffer to reconstruct the world
coordinates of your object. You'll lose some precision
depending on your depth range, but for close objects
you'll get pretty good values. Does java 3D not provide
access to that information?
Thanks,
Vann
--
Vann Hasty
Real-time rendering
Evans & Sutherland
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