UV Unwrap: 'Fill Holes' option distorts protruding parts in holes #119627
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Reference: blender/blender#119627
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System Information
Operating system: Windows-10-10.0.19045-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 3070/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 551.76
Blender Version
Broken: version: 4.0.2, branch: blender-v4.0-release, commit date: 2023-12-05 07:41, hash:
9be62e85b727Worked: (newest version of Blender that worked as expected)
Short description of error
UV unwraping incorrect to protruding parts to cavities.
This happens when the Fill Holes option is enabled.
Exact steps for others to reproduce the error
Enable and disable 'Fill Holes' to compare.
UV unwraping incorrect to protruding parts to cavitiesto UV Unwrap: 'Fill Holes' option distorts protruding parts in holesI can confirm. The 'Fill Holes' option that apparently generates this issue.
This could be a side effect or some technical limitation of a feature that is advantageous in most cases.
But I'm not sure what 'Fill Holes' actually does.
This option was apparently added in
e66b5e5cd5by @brechtThe hole filling is only really designed to work with convex holes. It could be made to use the more advanced scanfill, though it also has a heuristic to keep good triangle shapes which is important here. So it's not a trivial switch.