On Fri, 28 Jan 2000 20:10:31 -0500, Chris Huff wrote:
>Can you give a simplified explanation of how it works? I have downloaded 
>the paper, but can't make a whole lot of sense out of it.

Conceptually (but not actually) it traces three rays instead of just
one - one through the center of the pixel, one through the top center,
and one through the right center.  When the center ray hits a
refractive or reflective surface, the software bends the other two 
imaginary rays appropriately based on the normal and the curvature of 
the surface.  When textures are calculated, the two imaginary rays 
give an approximation of the ray's footprint.

-- 
These are my opinions.  I do NOT speak for the POV-Team.
The superpatch: http://www2.fwi.com/~parkerr/superpatch/
My other stuff: http://www2.fwi.com/~parkerr/traces.html

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