For a gentle introduction to the theory behind all this, you might want to check out my book Computer Graphics from Scratch (https://gabrielgambetta.com/compute

For a gentle introduction to the theory behind all this, you might want to check out my book Computer Graphics from Scratch (https://gabrielgambetta.com/computer-graphics-from-scratch https://gabrielgambetta.com/computer-graphics-from-scratch). Freely available online!