I thought you were talking about the raytracer I was obsessed with as a kid, POVRay, but indeed there is also a project called polyray.

I spent many a weekend rendering hundreds of .tga files and throwing them into .flc files since that was the only way I knew how to make "videos". I mostly did renderings of planets turning with texture maps, trying to get something similar to what I saw in Star Control 2, and I told myself I was making them for my own video game, but I never got past fiddling around with povray. Anyway it looks like polyray has a lot of the same facilities. I wonder how I was unaware of it for the couple years I played with povray?