[raphlinus]

The numerical robustness thing gave me a chuckle (rotate 1 radian and pray to the geometry gods), especially as I've been spending a good fraction of my time dealing with that in fancy path rendering and stroking.

One of the things I really want to work on in the next few months is a path intersection implementation that's robust by construction, backed up both by a convincing (if not formal) argument and tests crafted to shake out robustness issues. I have a bunch of ideas, largely motivated by the need to generalize well to curves - Shewchuk's work, cited elsethread, is impressive but I'm not smart enough to figure out how to make it work for arbitrary Béziers.

There's an issue[277] to track the work, and that has pointers to some of the ideas. If anyone is interested in working with me on this, please get in touch. If successful, I think it'll result in a nice code base and also likely a publishable paper.

[277]: https://github.com/linebender/kurbo/issues/277