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Follow Active Quads sometimes gives Division by Zero Error #68845

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opened 2019-08-20 00:34:00 +02:00 by Florian · 14 comments
Florian commented 2019-08-20 00:34:00 +02:00
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System Information
Operating system: Linux-4.9.0-9-amd64-x86_64-with-debian-9.9 64 Bits
Graphics card: GeForce GTX TITAN X/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 418.74

Blender Version
Broken: version: 2.80 (sub 75), branch: master, commit date: 2019-07-29 14:47, hash: f6cb5f5449
Worked: 2.79

Short description of error
Sometimes the "Follow Active Quads" function within "UV Unwrap Faces" gives an Division by Zero Error:
Blender_DivisionByZero.png

Happens on 2 Debian Machines so far.

In Blender 2.79 on the same Machine it works. (This Project was created in 2.79)

Exact steps for others to reproduce the error

  • Open this Blend File: wooden bench1.0.2.8.blend
  • Faces should already be selected (If not, move the Mouse to the seat area and press L)
  • Right Click -> UV Unwrap Faces -> Follow Active Quads -> Ok
  • The Error should pop up
**System Information** Operating system: Linux-4.9.0-9-amd64-x86_64-with-debian-9.9 64 Bits Graphics card: GeForce GTX TITAN X/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 418.74 **Blender Version** Broken: version: 2.80 (sub 75), branch: master, commit date: 2019-07-29 14:47, hash: `f6cb5f5449` Worked: 2.79 **Short description of error** Sometimes the "Follow Active Quads" function within "UV Unwrap Faces" gives an Division by Zero Error: ![Blender_DivisionByZero.png](https://archive.blender.org/developer/F7673930/Blender_DivisionByZero.png) Happens on 2 Debian Machines so far. In Blender 2.79 on the same Machine it works. (This Project was created in 2.79) **Exact steps for others to reproduce the error** - Open this Blend File: [wooden bench1.0.2.8.blend](https://archive.blender.org/developer/F7673932/wooden_bench1.0.2.8.blend) - Faces should already be selected (If not, move the Mouse to the seat area and press L) - Right Click -> UV Unwrap Faces -> Follow Active Quads -> Ok - The Error should pop up
Florian commented 2019-08-20 00:34:00 +02:00
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Added subscriber: @Xeroderma

Added subscriber: @Xeroderma
Wolfgang Faehnle commented 2019-08-20 08:19:50 +02:00
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Added subscriber: @mib2berlin

Added subscriber: @mib2berlin
Wolfgang Faehnle commented 2019-08-20 08:19:50 +02:00
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Hi, work with latest Master, update your build to test.

Operating system: Linux-5.2.8-1-default-x86_64-with-glibc2.9 64 Bits
Graphics card: Mesa DRI Intel(R) Ivybridge Mobile Intel Open Source Technology Center 4.2 (Core Profile) Mesa 19.1.3

Blender Version
2.81 (sub 2), branch: master, commit date: 2019-08-18 14:42, hash: 38380ddca3

Hi, work with latest Master, update your build to test. Operating system: Linux-5.2.8-1-default-x86_64-with-glibc2.9 64 Bits Graphics card: Mesa DRI Intel(R) Ivybridge Mobile Intel Open Source Technology Center 4.2 (Core Profile) Mesa 19.1.3 **Blender Version** 2.81 (sub 2), branch: master, commit date: 2019-08-18 14:42, hash: `38380ddca3`
Philipp Oeser commented 2019-08-20 12:21:57 +02:00
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Added subscriber: @lichtwerk

Added subscriber: @lichtwerk
Philipp Oeser commented 2019-08-20 12:21:58 +02:00
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Changed status from 'Open' to: 'Archived'

Changed status from 'Open' to: 'Archived'
Philipp Oeser self-assigned this 2019-08-20 12:21:58 +02:00
Philipp Oeser commented 2019-08-20 12:21:58 +02:00
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I can reproduce actually, there are zero length edges.
This is not supported though, try merging vertices (Vertex > Merge Vertices > By Distance), then the error is resolved...

Will close this (but feel free to comment again if issues persist)

I can reproduce actually, there are zero length edges. This is not supported though, try merging vertices (`Vertex` > `Merge Vertices` > `By Distance`), then the error is resolved... Will close this (but feel free to comment again if issues persist)
Florian commented 2019-08-20 12:43:33 +02:00
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Oh, I'm sorry to waste your time then.

Maybe it would be cool to have an Error telling what exactly is the Problem. Old Blender just seemed to ignore this.

Thank you anyways, and keep up the great Work :-)

Oh, I'm sorry to waste your time then. Maybe it would be cool to have an Error telling what exactly is the Problem. Old Blender just seemed to ignore this. Thank you anyways, and keep up the great Work :-)
Philipp Oeser commented 2019-08-20 13:03:29 +02:00
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Changed status from 'Archived' to: 'Open'

Changed status from 'Archived' to: 'Open'
Philipp Oeser commented 2019-08-20 13:03:29 +02:00
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need to check again then, should not throw an error really

need to check again then, should not throw an error really
Jacques Lucke commented 2019-08-20 14:27:45 +02:00
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Added subscriber: @JacquesLucke

Added subscriber: @JacquesLucke
Jacques Lucke commented 2019-08-20 14:27:45 +02:00
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Can reproduce. There should be better error handling indeed.

Can reproduce. There should be better error handling indeed.
Philipp Oeser removed their assignment 2019-11-06 13:09:21 +01:00
blender-admin commented 2020-07-15 13:48:28 +02:00
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This issue was referenced by 5c806a2f04

This issue was referenced by 5c806a2f0443c894e8ca5e9df80124cd83b5743a
blender-admin commented 2020-07-15 13:48:28 +02:00
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This issue was referenced by 5a11c8ba24

This issue was referenced by 5a11c8ba244d966813ff491d9e295f13b7d7d248
Campbell Barton commented 2020-07-15 13:52:47 +02:00
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Changed status from 'Confirmed' to: 'Resolved'

Changed status from 'Confirmed' to: 'Resolved'
Campbell Barton self-assigned this 2020-07-15 13:52:47 +02:00
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Reference: blender/blender#68845
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