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I'm shelving this experiment for now. 3d is too big of a rabbit hole even for me. I love re-inventing the wheel (that's how you get to know how wheels are made) but it was too many headaches. Also: deleting code feels SO much better than writing it. AND fck matrix math bsky.app/profile/smol...

If I learnt anything from writing my own software rendered 3D engine it's that matrices are just a way to encode a bunch of vector operations. You don't even have to use them. You can just do these operations directly. But it's a nice way to compactly represent them.

I think of them as an operation provided by some weird hardware you have to interface with. You know how some hardware provides you an operation that does A+B*X in one instruction? (You just have to specify A, B, and X). Each row of the matrix describes how to modify each component of your vector.