knife buggy cut #41164

New Issue

Sanc Tuary · 2014-07-24T13:12:08+02:00

Sanc Tuary commented

2014-07-24 13:12:08 +02:00

System Information
Operating system and graphics card
windows and linux

Blender Version
Broken: Blender 2.71 "stable"
Worked: i don't remember a version of Blender in which the Bmesh knife was working without problems

Short description of error
Knife can duplicate vertices on cut edges, as reported here :
http://blenderartists.org/forum/showthread.php?317503-Problem-Knife-Tool-Strange-behavior&p=2691898&viewfull=1#post2691898

Exact steps for others to reproduce the error

Load the blend with Load UI so you get the same view and visual

buggyknife.blend

press K and try to cut at these locations :
http://i.imgur.com/JmHHYPM.jpg
If you managed to did the cut roughly there, you'll notice the vertices there are doubled :
http://i.imgur.com/oZfSl5g.jpg

The oddity is that it does not happen everytime, but it happens.

Video of the bug from the original reporter on the Blenderartist board :
http://blenderartists.org/forum/showthread.php?317503-Problem-Knife-Tool-Strange-behavior&p=2692404&viewfull=1#post2692404

**System Information** Operating system and graphics card windows and linux **Blender Version** Broken: Blender 2.71 "stable" Worked: i don't remember a version of Blender in which the Bmesh knife was working without problems **Short description of error** Knife can duplicate vertices on cut edges, as reported here : http://blenderartists.org/forum/showthread.php?317503-Problem-Knife-Tool-Strange-behavior&p=2691898&viewfull=1#post2691898 **Exact steps for others to reproduce the error** - Load the blend with Load UI so you get the same view and visual [buggyknife.blend](https://archive.blender.org/developer/F99368/buggyknife.blend) - press K and try to cut at these locations : http://i.imgur.com/JmHHYPM.jpg - If you managed to did the cut roughly there, you'll notice the vertices there are doubled : http://i.imgur.com/oZfSl5g.jpg The oddity is that it does not happen everytime, but it happens. Video of the bug from the original reporter on the Blenderartist board : http://blenderartists.org/forum/showthread.php?317503-Problem-Knife-Tool-Strange-behavior&p=2692404&viewfull=1#post2692404

Sanc Tuary commented

2014-07-24 13:12:08 +02:00

Changed status to: 'Open'

Sanc Tuary commented

2014-07-24 13:12:08 +02:00

Added subscriber: @sanctuary

Sanc Tuary commented

2014-07-25 20:01:49 +02:00

Thanks to Eppo pointing it, it looks like that problem can be avoided by scaling up the mesh, it looks like when edges are small (i mean something like 0.0x blender units, x being a number ) , the chances of the doubled vertices at a cut will increase a lot.

Howard Trickey was assigned by Sergey Sharybin

2014-07-28 12:49:36 +02:00

Sergey Sharybin commented

2014-07-28 12:49:36 +02:00

Added subscribers: @howardt, @Sergey

Sergey Sharybin commented

2014-07-28 12:49:36 +02:00

@howardt, mind having a check, thanks!

perfection cat commented

2014-08-01 01:23:36 +02:00

Added subscriber: @sindra1961

perfection cat commented

2014-08-01 01:23:36 +02:00

When I cut it in mid-point, double vertices does not seem to appear.

Howard Trickey commented

2014-08-12 14:00:43 +02:00

I'm not having any success in making this bug appear with the supplied buggyknife.blend. I'll read through the forum thread and see if I can find another condition that may trigger it for me.

Howard Trickey commented

2014-08-12 14:44:27 +02:00

Oh, I see, there are doubled vertices (which I can tell by box selecting in wire mode), not just separated the way they were in the screen shot. So I confirm the problem and can work on it.

blender-admin commented

2014-08-13 00:03:31 +02:00

This issue was referenced by 1510d0d441

This issue was referenced by 1510d0d4417c4ec91b19f06fac6f62ad7df3275b

Campbell Barton commented

2014-08-13 00:11:21 +02:00

Changed status from 'Open' to: 'Resolved'

Campbell Barton closed this issue

2014-08-13 00:11:21 +02:00

Campbell Barton commented

2014-08-13 00:11:21 +02:00

Closed by commit 1510d0d441.

Closed by commit 1510d0d441.

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knife buggy cut #41164