Coding shapes with signed distance fields is, unfortunately, highly impractical for CAD; operations tend to compose poorly (most operations a) assume euclidian space and b) distort space away from euclidian). But it's a pretty nice medium for generative art, and Scheme is a beautiful language to do it in.
This means that you can go wild with geometric and coordinate transformations – even weird things like twisting or attract/repel will work fine.
(the only requirement is C0 continuity, which is the bare minimum; otherwise, a point could be both inside and outside the shape depending on which direction you approach it from)
https://www.mattkeeter.com/research/mpr/
https://news.ycombinator.com/item?id=26873691
There's also a good Twitter thread here:
https://twitter.com/CasualEffects/status/1385389913881858054
Outside of art and black holes and stuff, of course.