Even further OT: I once saw a ray traced image (mirror sphere & checkered
plane) that was raytraced in Postscript. The PS file was only about 1 k
long.
Seriously, Rick - if you want to do *exactly* 3 spheres and a plane, you can
leave out most of the code by hardcoding the sphere locations, textures,
setting the plane as z=0, etc. If at most one sphere is reflective you could
simplify things more. (You *will* be making one reflective, won't you?)
-Robert Dawson
