optimize subpath sorting in combine / spearate morph.#779
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100pah
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Jun 30, 2021
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In this PR I changed the hash algorithm in subpath sorting from z-order to hilbert. The difference is subtle in most cases. But in several cases, paths may move across a long distance to another even though they don't need it. That's because two points may cross the whole dim when they are still adjacent on z-order. But hilbert won't have this issue.
Before(z-order) and After(Hilbert)