Knife Tool produces bad geometry in certain cases (disconnected edges/vertices, overlapping faces) #62285
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Reference: blender/blender#62285
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if i use tools knife i see this bug.
Added subscriber: @Ghostil
#73423 was marked as duplicate of this issue
#70293 was marked as duplicate of this issue
#68713 was marked as duplicate of this issue
#65090 was marked as duplicate of this issue
Added subscriber: @ZedDB
Can't reproduce this.
Please follow our submission template and guidelines and make a complete, valid bug report, with required info, precise description of the issue, precise steps to reproduce it, small and simple .blend and/or other files to do so if needed, etc.
A guideline for making a good bug report can be found here: https://wiki.blender.org/wiki/Process/Bug_Reports
In 2.79 there is no such thing, it normally cuts according to my form.
i download new version 2.80.47
blender-2.79.0-git.7ad367d0231d-windows64
The result should be a cut according to the shape that I drew on the cube as it was done in the screenshot at 2.79, at 2.80 it turns out that after clicking on Enter.
I still can't reproduce this. The knife tools cuts as I expect it to on the default cube.
I asked many who use 2.8 for all, it works fine. It's very strange why it works for me. I will try a clean build without addons in the evening. Perhaps there is a bug. I also tried on the plane and got the same strange result.
Hi. You no see this bug if you use default unit scale 1.0, change this as my 0.01 and you see this bug.
knife_cube.blend
knife bug in 2.8to Knife Tool produces bad geometry in certain cases (disconnected edges/vertices, overlapping faces)Added subscriber: @lichtwerk
#65090 (Knife tool - 3 issues) also has a good example
Added subscribers: @Llamarider, @ideasman42, @davi, @WilliamReynish
Marking this as regression from 2.79
Like mentioned in #65090 / #68713, this seems to be dependent on (wide angle?) view points, also origin locations?
Added subscriber: @Stanislav
Added subscriber: @PaulGeraskin
Hi. This looks the same issue I added here.
https://developer.blender.org/T70293
I hope it will help to solve the issue.
I have also found that if I change Blender's window size then the issue will be able to disappear. It looks like it depends on specific viewport view + window size.
tmp2.mp4
Here is another one strange situation with the cut tool. It cuts really strange.
This model tmp.blend
tmp3.mp4
Added subscriber: @Tysa
i ran into a couple of issues aswell today with the knife tool (2.80 release).
mostly happens when puting points on edges manually. going from vert to vert with no manual points set on edges seems to go fine.
Added subscriber: @dhenefalk
I ran into this problem at work today as well (2.81a). It seems to have to do with the Unit scale as mentioned above. If I work in unit scale 1 it usually works. Unless my geometry have very small or large dimensions. Going lower or higher gives me strange results. Another thing that helped was switching to Orthographic view instead. Then I could cut without any errors.
Added subscriber: @iss
Changed status from 'Confirmed' to: 'Needs User Info'
I have re-triaged this report and can not reproduce it.
Can you please check if this is still an issue in latest build?
https://builder.blender.org/download/
Added subscribers: @screendot, @Stan_Pancakes
@iss
I downloaded the latest version. And yes it still has the issue.
tmp1.mp4
Changed status from 'Needs User Info' to: 'Confirmed'
Added subscriber: @Ionflux
Added subscriber: @bent
Saw some friends on discord speaking about the same problem, they even found a video on it...
https://www.youtube.com/watch?v=TjkaC6tdM9U