Not sure why this is popping up now, but people should know there's been quite a bit of followup work. One is a draft paper (not yet polished for publication), on arXiv[1]. I have an issue on my blog[2], and one of these days I intend to get back to it. It's also in use in Vello for the clip stack, in particular computing the intersection of bounding boxes of all clip paths in the spine of the tree from the leaf draw object to the root (clips can be nested to considerable depth). In any case, happy to talk about it.
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Not sure why this is popping up now, but people should know there's been quite a bit of followup work. One is a draft paper (not yet polished for publication), on arXiv[1]. I have an issue on my blog[2], and one of these days I intend to get back to it. It's also in use in Vello for the clip stack, in particular computing the intersection of bounding boxes of all clip paths in the spine of the tree from the leaf draw object to the root (clips can be nested to considerable depth). In any case, happy to talk about it.
[1]: https://arxiv.org/abs/2205.11659
[2]: https://github.com/raphlinus/raphlinus.github.io/issues/66