Read a dither algorithm — a fascinating deep dive into dithering techniques. The entire site, pippin.gimp.org, is a goldmine of creative and technical projects. Highlights include squoze – unicode encodings for pointers and hashes, and the textbook Image Processing with gluas — “text tries to explain the craft of digital alteration and conjuring of images to your own liking. It attempts doing so from a programmers mind-set rather than a mathematical one.” I’d love to create something similar in Swift and make it accessible on the web.