new build target 'vcproj' - generate Visual C++ Studio project files; fix GCC warnings in intersect_packet()
Bugs
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* Mingw + SSE does not work
Future Plans
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* UV texturing
* PlanarMap should allow to choose normal axis
* Container should implement Shape interface to allow building hierarchies
* Container should allow local space transformations
* stochastic oversampling
* absorbtion of refracted rays in dense materials (can be computed using shape distance and some 'absorbance' constant)
* put everything into a namespace