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* Re-think colors.Tavian Barnes2011-12-141-5/+1
| | | | | | | | | 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.
* Update copyright years.Tavian Barnes2011-08-311-1/+1
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* Vast libdimension API and internals improvements.Tavian Barnes2011-06-131-0/+58
Couldn't really do these while I was trying to be POV-Ray compatible, 'cause they would've broken compatibility.