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Vertex group doesn't add vertices from knife tool
Open, Confirmed, LowPublic

Description

System Information
Win7 32bit

Blender Version
Broken: 2.78

Short description of error
Knife project doesn't take existing vertex group into account.

Exact steps for others to reproduce the error
Last cutting was done by simple Knife to show the difference

In .Blend hit Knife project

Details

Type
To Do

Event Timeline

Bastien Montagne (mont29) triaged this task as Needs Information from User priority.

Am tired of repeating this a bit:

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.
Videos and/or links to external sites etc.
are not acceptable as bug report (they can be provided as additional information only).

I am sorry.
In .Blend hit Knife project

Bastien Montagne (mont29) closed this task as Archived.Feb 6 2017, 5:39 PM
Bastien Montagne (mont29) claimed this task.

Hmmm… do not agree here, knife have same behavior as knife project here: it interpolates vgroups when creating vertices on existing edges, not when creating vertices on new edges (you can see that with knife by drag-drawing complex line cutting itself several times, vertices created at intersections of non-yet-existing edges also ignore existing vgroups).

Thanks for the report, but will consider this a TODO, would be nice to interpolate vgroups based on neightbor vertices, but that’s not technically a bug currently imho. Added entry to https://wiki.blender.org/index.php/Dev:Source/Development/Todo/Tools#Mesh_Editing.

Campbell Barton (campbellbarton) changed Type from Bug to To Do.
Campbell Barton (campbellbarton) renamed this task from Vertex group doesn't add vertices from knife project tool to Vertex group doesn't add vertices from knife tool.
Campbell Barton (campbellbarton) reopened this task as Open.
Campbell Barton (campbellbarton) lowered the priority of this task from Needs Information from User to Confirmed, Low.