For anyone interested in an accessible introduction to the (simple) math and algorithms behind this kind of software rasterizer, I present https://gabrielgambetta.com/computer-graphics-from-scratch (soon to become an actual book, thanks to the positive reception it has had in Hacker News!)

This is awesome! I built a 3D wireframe engine once and was so happy the first time I managed to get it to draw a spinning wireframe cube