Knife tool bug in close zoom #69412

New Issue

Piotr · 2019-09-02T15:56:46+02:00

Piotr commented

2019-09-02 15:56:46 +02:00

{F7714212}System Information
Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 436.02

Blender Version
Broken: version: 2.81 (sub 4), branch: master, commit date: 2019-09-01 20:47, hash: 928e0258fe
Worked: (optional)

Short description of error

When i try to cut with knife away from the object (in ortho top view) knife works ok.
When i zoom very close to the cutting vertex there is a problem.

Anim gif:

Exact steps for others to reproduce the error
[Please describe the exact steps needed to reproduce the issue]
[Based on the default startup or an attached .blend file (as simple as possible)]

{[F7714212](https://archive.blender.org/developer/F7714212/knife.blend)}**System Information** Operating system: Windows-10-10.0.18362 64 Bits Graphics card: GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 436.02 **Blender Version** Broken: version: 2.81 (sub 4), branch: master, commit date: 2019-09-01 20:47, hash: `928e0258fe` Worked: (optional) **Short description of error** When i try to cut with knife away from the object (in ortho top view) knife works ok. When i zoom very close to the cutting vertex there is a problem. Anim gif: ![TdlxmhLR6Y.gif](https://archive.blender.org/developer/F7714217/TdlxmhLR6Y.gif) **Exact steps for others to reproduce the error** [Please describe the exact steps needed to reproduce the issue] [Based on the default startup or an attached .blend file (as simple as possible)]

Piotr commented

2019-09-02 15:56:46 +02:00

Added subscriber: @Pinnhead

Philipp Oeser commented

2019-09-02 16:14:20 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2019-09-02 16:14:20 +02:00

Knife is dependent on z buffer I think.
Does lowering the clipping range in Sidebar / N-Panel > View > View > Clip Start / End improve the situation?

Knife is dependent on z buffer I think. Does lowering the clipping range in `Sidebar` / `N-Panel` > `View` > `View` > `Clip Start` / `End` improve the situation?

Piotr commented

2019-09-02 16:21:58 +02:00

No. I change Clip Start to 0.0001m and in the close zoom is still the same

Philipp Oeser commented

2019-09-02 16:36:35 +02:00

Did you lower Clip End as well? (You need a range that is tight as possible)

Piotr commented

2019-09-02 16:59:42 +02:00

I set Clip Start to 0.001 and Clip end to 0.1 and problem is still there.

But if really use the knife has something to do with the clip and each time you want to use knife tool in close zoom, you must change the clipping settings is a bit of a pain.

I set Clip Start to 0.001 and Clip end to 0.1 and problem is still there. But if really use the knife has something to do with the clip and each time you want to use knife tool in close zoom, you must change the clipping settings is a bit of a pain.

Philipp Oeser commented

2019-09-03 10:56:00 +02:00

Added subscriber: @mano-wii