Hm. I just recently wrote something that does the lowest layer of this (generating SVG path strings) and didn't consider it "Show HN" worthy... https://github.

Hm. I just recently wrote something that does the lowest layer of this (generating SVG path strings) and didn't consider it "Show HN" worthy... https://github.com/akx/gravelly.js https://github.com/akx/gravelly.js (And no, this isn't an attempt at an underhanded sneaky "Show HN", just a thought.)