Knife tool freezes Blender 2.82a (Latest Steam version) #76815

Closed
opened 2020-05-16 23:50:59 +02:00 by Aleksander Kovač · 9 comments

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce 940MX/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 445.87

Blender Version
Broken: version: 2.82 (sub 7), branch: master, commit date: 2020-03-12 05:06, hash: 375c7dc4ca
Worked: (optional)

Short description of error
[Knife tool freezes Blender 2.82a]

Exact steps for others to reproduce the error

  1. Enable the Knife Tool
  2. Start to click and drag
  3. A red (first) do appears somewhere, but thats it.

Zirafa_WIP#HEADv7 – kopija.blend

**System Information** Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: GeForce 940MX/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 445.87 **Blender Version** Broken: version: 2.82 (sub 7), branch: master, commit date: 2020-03-12 05:06, hash: `375c7dc4ca` Worked: (optional) **Short description of error** [Knife tool freezes Blender 2.82a] **Exact steps for others to reproduce the error** 1. Enable the Knife Tool 2. Start to click and drag 3. A red (first) do appears somewhere, but thats it. [Zirafa_WIP#HEADv7 – kopija.blend](https://archive.blender.org/developer/F8539344/Zirafa_WIP_HEADv7___kopija.blend)

Added subscriber: @FluffyBird

Added subscriber: @FluffyBird
Member

Added subscriber: @Alaska

Added subscriber: @Alaska
Member

Changed status from 'Needs Triage' to: 'Needs User Info'

Changed status from 'Needs Triage' to: 'Needs User Info'
Member

I'm unable to get the knife tool to work in the find you provided. That will need to be investigated by someone more knowledgeable than me.

For fixing your issue, are you able to test Blender 2.83 and 2.90 to see if your issue has been resolved in one of those updates? https://builder.blender.org/download/

I'm unable to get the knife tool to work in the find you provided. That will need to be investigated by someone more knowledgeable than me. For fixing your issue, are you able to test Blender 2.83 and 2.90 to see if your issue has been resolved in one of those updates? https://builder.blender.org/download/

Added subscriber: @deadpin

Added subscriber: @deadpin

The issue is due to the very wide clip start/end settings that are in use for the file. It is currently set to 0.0001 m to 10000 m. This range is much too wide and the Knife tool, in particular, is very susceptible to precision problems based on the clipping distance.

Using 0.001 m to 1000 m seems to work here.

The issue is due to the very wide clip start/end settings that are in use for the file. It is currently set to 0.0001 m to 10000 m. This range is much too wide and the Knife tool, in particular, is very susceptible to precision problems based on the clipping distance. Using 0.001 m to 1000 m seems to work here.
Member

Going with the advice from @deadpin , I was able to test your scene to see if it crashes and was unable to reproduce the bug.

Going with the advice from @deadpin , I was able to test your scene to see if it crashes and was unable to reproduce the bug.

Changed status from 'Needs User Info' to: 'Resolved'

Changed status from 'Needs User Info' to: 'Resolved'
Aleksander Kovač self-assigned this 2020-05-17 15:20:31 +02:00

Hi!
Setting the lowest value to 0.001m worked, though the clipping range is set so from the beginning the same and the knife tool worked before perfectly.
Thank you anyway, @Alaska and @deadpin !

Hi! Setting the lowest value to 0.001m worked, though the clipping range is set so from the beginning the same and the knife tool worked before perfectly. Thank you anyway, @Alaska and @deadpin !
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Reference: blender/blender#76815
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