That's pretty sweet. I tried to work something like that out on my own while I was using this resource to do some spiral iteration on a Tonnetz[1] I was making in SwiftUI. (Janky screenshot[2]) I ended up retreating from that approach — but now I might give it another go. Thanks for the links!

[1] https://en.wikipedia.org/wiki/Tonnetz

[2] https://hachyderm.io/@pohl/110918457500286347