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Another Ray-Tracing Program. Full impementation from scratch of this well-known algorithm using C++. Thanks to OOP, the code is very simple and not really optimized. I would like it to be a learning basis for the ones interested in ray-tracing.
BRL-CAD is a powerful cross-platform constructive solid geometry solid modeling system that includes an interactive geometry editor, ray-tracing for rendering amp; geometric analyses, network distributed framebuffer support, image amp; signal-processing tools.
Pixie is a photorealistic renderer that uses a RenderMan-like interface. Features include programmable shading, motion blur, depth of field, raytracing, scan-line rendering, occlusion culling, global illumination, caustics ...