Computational Geometry
This is very interesting, how people figure out algorithms to render lighting.
Using triangles as our 2d primitives.
You apply inverse transformation to simulate stationarity.
Book: file:///Users/stevengong/My%20Drive/Books/Stuff%20Made%20Here/Computational%20Geometry%20-%20Algorithms%20and%20Applications,%203rd%20Ed.pdf
Concepts
Problems