Geometry nodes. Fillet curve limit unstable work #98209
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Reference: blender/blender#98209
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System Information
Operating system: Windows-8.1-6.3.9600-SP0 64 Bits
Graphics card: NVIDIA GeForce GTX 660 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 473.04
Blender Version
Broken: version: 3.2.0 Beta, branch: master, commit date: 2022-05-16 16:16, hash:
a2dacefb46
Short description of error
When two fillets meets with their borders/limits they become unstable and rotate cross-section along the curve:
2022-05-18_00-32-13.mp4
File with test
fillet limit fail.blend
update:
With 2 segments of polyline fillet expands without limit, when limit is on
2022-05-21_20-08-34.mp4
Added subscriber: @Vyach
Added subscriber: @lichtwerk
Changed status from 'Needs Triage' to: 'Confirmed'
Can confirm the behavior.
Added subscriber: @JacquesLucke
The issue is that the output of the fillet node creates overlapping points, which makes the tangent of the segment between the points meaningless, which leads to bad curve normals.
This could be improved in the fillet node, by e.g. merging overlapping points or limiting the radius a bit more.
E.g. this "fixes" it for me:
I'm also testing a patch that makes the tangent calculation more robust. Will post it soon.
This issue was referenced by
a7bda30ca8
Changed status from 'Confirmed' to: 'Resolved'