3D Frustum Software Renderer implemented in Lua

Dear game developers,

I am looking forward to find people who are interested in 3D software rendering. In my opinion it is good to start in software to learn the basics, especially starting with a good implementation as foundation. If you understand everything you can move on to complex hardware acceleration APIs. The implementation is capable to render triangles and rectangles.

Code to render a triangle looks sort of like this:

local viewFrustum = createViewFrustum(
    createVector(0, 0, 0),      -- position
    createVector(10, 0, 0),     -- right
    createVector …