[comp.graphics] looking for info. on rendering polhedrons with shadows

venkat@brand.usc.edu (V. Venkateswar) (05/21/89)

I want to generate synthetic images of polyhedra (with shadows)
given the description of polyhedra in some textual form
(as some form of a Boundary representation) and also information
like the illuminating vector, ground plane, viewpoint vector.
Orthography can be assumed. Also, a simple lambertian reflectance
model can be assumed (so looks like my main problem is how to
render shadows).

Can someone out there on netland 
point out some references? Any public domain programs that can
do the rendering (with shadows)? Please e-mail, as this could be
an oft repeated request on this newsgroup!

Vad Venkat.
venkat@brand.usc.edu