Triangle-Triangle intersection regression in 2.90 #80444
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Reference: blender/blender#80444
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System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce GTX 1050 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 446.14
Blender Version
Broken: version: 2.91.0 Alpha, branch: master, commit date: 2020-08-31 03:47, hash:
6879798202
Worked: (newest version of Blender that worked as expected)
Short description of error
[ display faces that not intersecting and connected with one vertex]
Exact steps for others to reproduce the error
Go to edit mode , search intersect faces in 3d print addon or with overlay analysis - the same result.
werid faces intersection display becouse they are not intersecting. they are joind only one vert intersecting bug.blend
Added subscriber: @WWS3D
Added subscriber: @iss
Changed status from 'Needs Triage' to: 'Confirmed'
I can reproduce this.
At first I thought BVHtree utils don't like triangle fan topology, but I can't reproduce same issue with cone, 500verts and trifan base. I am still not 100% sure this would be a bug, but I am not sure if I can get to bottom of this issue.
{F8863399}Hi again.
Hi I have a lot of that with my work. I work with smal obiejcts and small dense meshes. ( modeling for 3d print - minis for board games ) those models are like 3 cm tall.
Thats why in that scale i have this behavior
this is what I have with dyntopo in sculpt mode turn on and auto fill with triagulates. next i check intersections and bamm... now i have a lot of itersections that blender show be but there is no intersection realy.
Definitly bug and is bad for different tasks in blender like booleans becouse booleans search for intersections.
link for a file:
https://we.tl/t-ulKuJYME8z
Added subscriber: @ideasman42
Changed status from 'Confirmed' to: 'Resolved'
This is a regression in
c0340ec893
,This patch reverts the change P1647, as reverting via git gave conflicts.
intersection algorithm bug - display faces that not intersecting and connected with one vertexto Triangle-Triangle intersection regression in 2.90Changed status from 'Resolved' to: 'Confirmed'
This issue was referenced by
d1f906e874
Changed status from 'Confirmed' to: 'Resolved'
is it fixed? and what regrssion means?