A few days ago I think I saw a post asking about using PovRay
for creating wireframe hiddenline renderings. These might be
of interest:
   http://www.mpip-mainz.mpg.de/~clark/tutorial/rendering/hiddenline/
based upon my earlier idea using Radiance
   http://astronomy.swin.edu.au/~pbourke/rendering/wireframe/
-- 
Paul Bourke
pbo### [at] swineduau

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