Collection of articles, tutorials, derivations and sundry written in my spare time. Things I don't understand and am forced to write about to try and ease the confusion.

Graphics halfway-vector model-view-projection polynomial-smin ray-box-intersection ray-sphere-intersection reflection-and-refraction-in-a-raytracer resources Math distance-to-plane-and-ray-plane-intersection euler-lagrange-equation euler-method Physics impulse-based-collision snells-law Programming a-lispy-interlude resources