liuyang wrote:
> I need the distance of each pixel to the camera in the rendered scene. Is
> there a way to get it in Pov ray? I am doing an experiment to study the
> relationship between luminance and distance in natural or simulated world,
> so it is really important to know the exact distance and pixel
> relationship. Does the z buffer or depth buffer give me this information?

Yes it does give you this information, but POV-Ray does not use either
because it is a ray-tracer. The same information is still computed, of
course, but you would need to modify POV-Ray to extract this information for
each pixel.

	Thorsten

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