A raytracer

I wrote this program shortly after having a conversation with a young lady about the raytracer she has to write as an assignment for her computer graphics class at uni. For my computer graphics class we didn't have to write a raytracer, and I consider them pretty hardcore and cool so I had to see if I could do it.

It features:

A scene description language (much like povray's)
spheres, boxes, planes, cylinders and arbitrary quadratics
arbitrary linear transforms (move,rotate,scale and any combination)
The ability to create shapes from groups of other shapes
a framework for arbitrarily complex textures
reflections and phong shading

Source is here. There are (rather terse) instructions in the source package.

Sample rendered images, produced from the samples in the source:

Simple test
More complete test, demonstrates most of what the program can do
slightly more aesthetically pleasing scene

If I get around to it, I may add more interesting textures, anti-aliasing, more CSG ("difference" combination), and maybe some more features for the language, like basic equations and declarations of stuff.