Avoid using Bbox machinery in Path.get_extents; special case polylines. #17995
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jklymak
approved these changes
Jul 21, 2020
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Because it constructs general path objects and then iterates over it using overly general mechanisms, I guess. |
update_from_data_xy is much slower than needed; we can use plain numpy instead. For polylines, we can completely skip the bezier handling for even more speedup.
dopplershift
approved these changes
Jul 21, 2020
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As a performance regression fix, should this be backported to 3.3.1? |
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I think the regression has been there since 3.0.0, so not urgent, unless there is something more than the tight_bbox PR that added to the slowdown. |
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Further discussion on #17974 says this was introduced in 3.3.0, so maybe we should backport this? |
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@meeseeksdev backport to v3.3.x |
meeseeksmachine
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Aug 5, 2020
…extents; special case polylines.
QuLogic
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Aug 5, 2020
…995-on-v3.3.x Backport PR #17995 on branch v3.3.x (Avoid using Bbox machinery in Path.get_extents; special case polylines.)
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update_from_data_xy is much slower than needed; we can use plain numpy
instead. (This speeds up #17974 another ~30-40% on top of #17994.)
For polylines, we can completely skip the bezier handling for even more
speedup. (This fixes the performance regression.)
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