Surface Normals

Hmm. It seems that it might not be a bad idea to calculate some surface normals so that Faces will be rendered properly.

Also: documentation!
Signed-off-by: Seth Battis <SethBattis@stmarksschool.org>
I hate casting

Also, I like documentation.

Signed-off-by: Seth Battis <SethBattis@stmarksschool.org>
Documentation

Documentation is good.

Signed-off-by: Seth Battis <SethBattis@stmarksschool.org>