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* Re-think colors.Tavian Barnes2011-12-141-207/+251
| | | | | | | | | Color is a property of light, and thus doesn't include information about transparency. But canvas pixels and object pigments represent a color and a degree of transparency. The new type dmnsn_tcolor/ TColor encapsulates that information. Also, fix the transparent shadow implementation.
* Rename raytrace.{c,h} to ray_trace.{c,h}.Tavian Barnes2011-12-051-0/+503