Computer Graphics (C SCI 330) Project 3 code

Simple testing shows that the most effective number of subdivisions is 5.
Results of this testing:
No two-level rendering: 2.2 fps
6 subdivisions: 2.7 fps
5 subdivisions: 2.78 fps
4 subdivisions: 2.69 fps
3 subdivisions: 2.65 fps

Screenshots and more extensive frame-per-second details will be
prepared for the presentation on Friday.

Changed files:
src/main/MainWindow.cpp
src/main/ObjReader.cpp
src/main/ObjReader.h
src/main/RenderWidget0.cpp
src/main/RenderWidget0.h
src/re330/Camera.cpp
src/re330/Camera.h
src/re330/Frustum.cpp
src/re330/Frustum.h
src/re330/GLRenderContext.cpp
src/re330/GLRenderContext.h
src/re330/Matrix4.cpp
src/re330/Matrix4.h
src/re330/Object.h
src/re330/RenderContext.h
src/re330/SWRenderContext.cpp
src/re330/SWRenderContext.h
src/re330/SWRenderWidget.cpp
src/re330/SWRenderWidget.h
src/re330/SWWidget.cpp
src/re330/SWWidget.h
src/re330/SceneManager.cpp
src/re330/Shapes.cpp
src/re330/Shapes.h
src/re330/Vector3.h
src/re330/Vector4.h