Make all Vector2 and Vector3 methods/functions inline
Made Ray methods inline
Inlined Ray class
Minor modifcations
Started to construct demo scene
Fixed more bugs in triangle intersection code and made it so shadow
intersection test returns shape that was hit (but that's it!)
Inlined two methods in the Mesh class that were found to contribute to poor
performance
Created new heightmap for test scene and got sphere position good
Flipped heightmap for better demo scene, removed reflection from terrain
and implemented skybox GEOMETRY (no texture coordinates applied yet)