Face-based Vertex Group Select/Deselect Option Suggestion #53435

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Bastien Montagne · 2017-11-30T23:37:46+01:00

(Deleted) commented

2017-11-30 23:37:46 +01:00

(Migrated from localhost:3001)

in uploaded file VerttexGroupProblem.zip :
VGerror0.jpg shows a mesh with a new vertex group "Group1" created.
VGerror1.jpg shows the same mesh after pressing "Deselect" that "Group1".
VGerror2.jpg shows it with manually added faces, which were also deselected due to
the fact, that they share vertices with vertex "Group1".
All these faces get assigned to vertex group "Group2".
VGerror3.jpg shows the situation, when now again "Deselect" of "Group2" was done.

This may not be a bug (if you think of the related vertices).
But its not very practically.
Think of the entire mesh to be a human finger. "Group1" here would be the nail.
On deselecting all other faces (here in "Group2") the nail should be selected,
but due to the shared vertices, only a part of it is selected.
see VGerror4.jpg

There should be a "face-based" selection option, so that vertices of a vertex group
are only affected by select/deselect if they are not shared with the already current
selected vertices.
Then all current selected shared vertices would always remain selected, even if they
are shared by a vertex group which is going to deselect.

VerttexGroupProblem.zip

Blender Version: 2.79 (but I think also same behaviour in older versions)

from another post (In #53436#473061, @RonanZeegers ducluzeau (zeauro) ) I found a related request here: #51675, but I think that face-map is not the same suggestion, which I did here

in uploaded file VerttexGroupProblem.zip : VGerror0.jpg shows a mesh with a new vertex group "Group1" created. VGerror1.jpg shows the same mesh after pressing "Deselect" that "Group1". VGerror2.jpg shows it with manually added faces, which were also deselected due to the fact, that they share vertices with vertex "Group1". All these faces get assigned to vertex group "Group2". VGerror3.jpg shows the situation, when now again "Deselect" of "Group2" was done. This may not be a bug (if you think of the related vertices). But its not very practically. Think of the entire mesh to be a human finger. "Group1" here would be the nail. On deselecting all other faces (here in "Group2") the nail should be selected, but due to the shared vertices, only a part of it is selected. see VGerror4.jpg There should be a "face-based" selection option, so that vertices of a vertex group are only affected by select/deselect if they are not shared with the already current selected vertices. Then all current selected shared vertices would always remain selected, even if they are shared by a vertex group which is going to deselect. [VerttexGroupProblem.zip](https://archive.blender.org/developer/F1248875/VerttexGroupProblem.zip) Blender Version: 2.79 (but I think also same behaviour in older versions) from another post (In #53436#473061, @RonanZeegers ducluzeau (zeauro) ) I found a related request here: #51675, but I think that face-map is not the same suggestion, which I did here

(Deleted) commented

2017-11-30 23:37:47 +01:00

(Migrated from localhost:3001)

Changed status to: 'Open'

(Deleted) commented

2017-11-30 23:37:47 +01:00

(Migrated from localhost:3001)

Added subscriber: @(Deleted)

(Deleted) commented

2017-12-02 01:41:16 +01:00

(Migrated from localhost:3001)

Added subscriber: @RonanZeegers

Bastien Montagne commented

2017-12-04 11:47:28 +01:00

Added subscriber: @mont29

Bastien Montagne commented

2017-12-04 11:47:28 +01:00

Changed status from 'Open' to: 'Archived'

Bastien Montagne closed this issue

2017-12-04 11:47:28 +01:00

Bastien Montagne self-assigned this 2017-12-04 11:47:28 +01:00

Bastien Montagne commented

2017-12-04 11:47:28 +01:00

Thanks for the report, but no bug here, as their names suggests it, vertex groups work on… vertices. What you want to achieve here would require face groups, or maybe even loop (face corner) groups.

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Face-based Vertex Group Select/Deselect Option Suggestion #53435