"Auto merge vertices" merges to wrong target #98438

Closed
opened 2022-05-27 14:27:43 +02:00 by Rigoletto Eikenberg · 8 comments

System Information
Operating system: Linux-5.4.0-110-generic-x86_64-with-glibc2.27 64 Bits
Graphics card: NVIDIA GeForce GTX 1660 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 510.73.05

Blender Version
Broken: version: 3.1.2, branch: master, commit date: 2022-03-31 17:40, hash: cc66d1020c
Worked: experienced in previous versions too

Short description of error
Using "Auto merge vertices" merges not to the snapped target vertices.
Which makes cleaning up very tiring.

Exact steps for others to reproduce the error
Did not known when this occur, to reproduce the error i added the .blendfile.
It maybe occur with geometry generated by boolean operations.

Example video,
First wanted merge, tried to merge the right vertic to the left, snap worked, but merged to the top vertic.
Second, snapped left vertic to the right vertic, merge works.

auto_merge_wrong.webm

screw_homer.blend

**System Information** Operating system: Linux-5.4.0-110-generic-x86_64-with-glibc2.27 64 Bits Graphics card: NVIDIA GeForce GTX 1660 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 510.73.05 **Blender Version** Broken: version: 3.1.2, branch: master, commit date: 2022-03-31 17:40, hash: `cc66d1020c` Worked: experienced in previous versions too **Short description of error** Using "Auto merge vertices" merges not to the snapped target vertices. Which makes cleaning up very tiring. **Exact steps for others to reproduce the error** Did not known when this occur, to reproduce the error i added the .blendfile. It maybe occur with geometry generated by boolean operations. Example video, First wanted merge, tried to merge the right vertic to the left, snap worked, but merged to the top vertic. Second, snapped left vertic to the right vertic, merge works. [auto_merge_wrong.webm](https://archive.blender.org/developer/F13114563/auto_merge_wrong.webm) [screw_homer.blend](https://archive.blender.org/developer/F13114546/screw_homer.blend)

Added subscriber: @Rigoletto

Added subscriber: @Rigoletto
Member

Added subscriber: @OmarEmaraDev

Added subscriber: @OmarEmaraDev
Member

Changed status from 'Needs Triage' to: 'Needs Developer To Reproduce'

Changed status from 'Needs Triage' to: 'Needs Developer To Reproduce'
Member

That's probably because the other vertex is within the merge threshold, so you can workaround this by decreasing the Auto Merge Threshold in the tool settings.
I am not sure if this is a bug, I would expect the merge to happen to the nearest vertex within the threshold, not any vertex, so this might be a bug. Tagging the module for more information.

That's probably because the other vertex is within the merge threshold, so you can workaround this by decreasing the Auto Merge Threshold in the tool settings. I am not sure if this is a bug, I would expect the merge to happen to the nearest vertex within the threshold, not any vertex, so this might be a bug. Tagging the module for more information.

Added subscriber: @mano-wii

Added subscriber: @mano-wii

For efficiency, the automerge merges the first vertex found within the threshold. It is an intentional limitation of the algorithm.

For efficiency, the automerge merges the first vertex found within the threshold. It is an intentional limitation of the algorithm.

Closed as duplicate of #78916

Closed as duplicate of #78916

Reduce auto merge threshold by 0.0001 m.

Reduce auto merge threshold by 0.0001 m.
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Reference: blender/blender#98438
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