In this episode, I discuss the projection matrix, and I introduce orthographic projections.
Concepts:
* Projection matrix
* Orthographic projection
Resources:
https://github.com/davidwparker/programmingtil-webgl/tree/master/0056-3d-projection-orthographic
https://en.wikipedia.org/wiki/3D_projection
https://en.wikipedia.org/wiki/Orthographic_projection
http://gamedev.stackexchange.com/questions/56201/opengl-understanding-the-relationship-between-model-view-and-world-matrix
