Introduction - If you have any usage issues, please Google them yourself
OpenGL-based code in VS2010 on
(2) completion of one kind of proper 3D graphics class calculateNormal (float* out, float* a, float* b, float* c) function
(3) completion of one kind of proper 3D graphics class calculateNormals () function
Call calculateNormals () constructor (4) Graphics class
(5) has a lighting effect to display 3D graphics in the graphics window