Questions tagged [vertex-groups]

Vertex groups are a group of vertices from a mesh that allow specialized selections and or editing.

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How can I automatically generate vertex groups for an armature?

I've been trying to find this on the Blender Wiki, but I can't seem to find the details. I knew how to do it one time but I forgot how to do so now. How do you generate vertex groups for individual ...
A Wild RolandiXor Has Appeared's user avatar
20 votes
1 answer
9k views

Finding vertices in a Vertex Group using Blender's Python API

Is there an easy way to get the vertices in a vertex group? The only way I've found is pretty brute-force - e.g., to find the vertices of object obs[i] in group "e"...
Jabberwock's user avatar
18 votes
2 answers
71k views

How to assign vertex group to single bone

I'm trying to animate a simple character in blender. I made a very simple armature, with a bone for every moving part of the mesh. Each moving part is "stored" in a vertex group, and I would like to ...
SoulOdin's user avatar
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18 votes
4 answers
19k views

Weight paint in cycles nodes?

I'm trying to use weights from a vertex group in cycles nodes to change the transparency of the mesh. But as far as I know this is still not supported. Is there any workaround that I could use? This ...
DavidGasku's user avatar
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18 votes
1 answer
39k views

What are the colored/highlighted edges in edit mode?

There are red and pink edges on my mesh. What do these colored edges mean? How can I use them?
user72708's user avatar
  • 387
16 votes
2 answers
34k views

Locking a vertex group from modification

In a mesh there is a group of vertices which should not move after being positioned once. I would like to find a way to lock them in place for the whole duration of the project. Currently I 'lock' ...
dimus's user avatar
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15 votes
3 answers
40k views

How to merge vertex groups?

I need this vertex group: additively merged with this vertex group: into a third new vertex group like this:
Jaroslav Jerryno Novotny's user avatar
14 votes
1 answer
19k views

Some vertices don't move along with the rig

I follow this tutorial which uses rigify and I have run into some issues. Not every vertex moves along the rig. Any idea what could cause this? I applied the location and rotation for every object. ...
Maik Klein's user avatar
13 votes
3 answers
13k views

Is there a way to save selection by faces

I'm trying to find a way to save selection faces, tried Vertex Group, the issue with Vertex Group is that it adds the faces that are marked by 4 vertices that are added to the Vertex Group, there are ...
Georges D's user avatar
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12 votes
2 answers
10k views

Checking if a vertex belongs to a vertex group in python

I'm trying to check whether or not a vertex belongs to a particular group, I've seen a couple methods, I'm wondering why the following does not move any vertices. ...
user2699's user avatar
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11 votes
2 answers
18k views

How do I stick an object to another objects vertex?

I just created a plane and added a wave modifier to it, to simply make it look like something fluid. Now, I have an Object that I want to place on the surface of this fluid plane. But how do I do that?...
Marten Zander's user avatar
11 votes
3 answers
34k views

How do I transfer only single vertex groups between objects?

I have two identical models and want to transfer a single vertex group from one of them to the other. I do NOT want to transfer all of the vertex groups, just a single one out of the list. Is this ...
Ryan's user avatar
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11 votes
2 answers
8k views

Vertex group from texture

If I have a model, for instance UV unwrapped, how can I from a texture assign a vertex group. White = assign vertex, black = don't assign vertex, values in between = halfway assigned vertex based on ...
Gunslinger's user avatar
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10 votes
1 answer
4k views

Assign vertex group in Geometry Nodes (v3.3)

This is my Geometry Node Setup. (EDIT: Here's a .blend file showing my nodes, modifier, vertex group, etc.) I create a grid, rotate it vertically, and then select out the topmost vertexes to assign to ...
Emily's user avatar
  • 361
9 votes
1 answer
9k views

How to restrict vertex weights to no more than N number of Bones?

I have a program that can animated a mesh using OpenGL but problematically it can only work and not crash when each vertex weight is affected as per the title to a maximum of four bones. The tutorial ...
RaenirSalazar's user avatar
9 votes
2 answers
48k views

Mirror vertex selection

Let's say I have selected some vertexes: How do I mirror this selection (in x axis) so I can select the other side (same vertices assuming my mesh is symmetric) I just want to select the other side ...
Arijoon's user avatar
  • 203
9 votes
1 answer
26k views

How to select a group of vertices in edit mode?

Is it possible to select all faces of one of these groups in edit mode? I tried my luck with this extension, but i wasn't able to figure out how that works. It just says "No Group" when i select a ...
Uli Holtmann's user avatar
9 votes
3 answers
11k views

How to batch rename bones and their corresponding vertex groups?

If we have modeled a character or device or something that has many identical moving parts (arms, tentacles, etc.), and rigged one instance of such a part, how do we get all of the bones with the same ...
Mentalist's user avatar
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8 votes
4 answers
31k views

How to mirror copy existing vertex weights

So far I only find option to mirror the existing weights, but didn't find a way to mirror + copy it, I mean, I want to create symmetrical weights on the other side, but I also want to keep the ...
Leon Cheung's user avatar
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8 votes
1 answer
2k views

How are the Bones assigned to the Vertex_Groups in the API?

I´m working on an export script for Blender and I´m currently stuck at exporting bone weights. Here is what i have so far(excuse me if my Python is not that clean, the syntax is pretty new to me): <...
Luis W's user avatar
  • 255
8 votes
1 answer
4k views

Is there any kind of face group?

So, I'm familiar with vertex groups for saving vertex selections / groups. But, is there any way of grouping faces? Vertex groups won't suffice for the obvious reason that they often select faces I ...
Codesmith's user avatar
  • 337
8 votes
1 answer
698 views

Select overlaping vertices from vertex groups

Does anyone know how could I select and view vertices which overlap from two vertex groups ?
Slobodan Vidovic's user avatar
7 votes
5 answers
14k views

Turn weight paint(vertex groups) into vertex paint?

Can I turn weight paint(vertex group data) into vertex paint? I would like to take the weight paint value and convert it into a black and white grey scale vertex paint map.
GiantCowFilms's user avatar
7 votes
2 answers
2k views

Is it possible to unhide only part of a mesh?

So I'm working on a mesh with sub-meshes, and as I work on various bits of the project, I hide other parts to make it easier to see what I am doing. So I work on one thing and hide a few predefined ...
brasshat's user avatar
  • 5,446
7 votes
1 answer
339 views

How to rotate a vertex group with geometry nodes?

As you can see in the image, it's possible to translate the position of a vertex group of an object with Geometry Nodes thanks to the Selection input of the ...
taiyo's user avatar
  • 3,384
7 votes
1 answer
25k views

How to delete unused vertex groups?

I downloaded a model and found that there were way more vertex groups than bones in the armature. Is there a way to delete all vertex groups that are not assigned to a bone?
user avatar
7 votes
1 answer
4k views

How to assign vertex groups and bone weights through Blender's Python API?

I'm making a script to import custom objects, it is still at early stage but so far vertices, faces and uv are created correctly. I want to do weight painting through Blender's Python API but I don't ...
Alex's user avatar
  • 346
7 votes
1 answer
186 views

vertices tracking: movie clip editor

Background: I've a *.png sequence previously rendered: a moving computer Now I wanna add the video to the monitor, so need to track the image sequence. The *.blend file is the same one I rendered ...
Francesco Yoshi Gobbo's user avatar
7 votes
1 answer
12k views

Bones moving wrong part of mesh?

I have an armature set up, but the bones aren't moving the mesh properly The mesh and armature: The vertex group of the bone I am going to move: As you can see, the circled region doesn't belong to ...
user avatar
7 votes
0 answers
495 views

Addon that implements edge/face groups similar to the vertex group feature? [duplicate]

I've found the vertex group feature very handy, but it only saves vertices, making it difficult to save edges or faces. Can somebody point me to an addon that lets me save edge/face selections?
Andrew Kane's user avatar
6 votes
4 answers
942 views

How to make my icosphere inflate in a heart shape?

I am trying to create a soft body/ cloth simulation where the eyeballs inflate and pop out of the eye socket and form into a heart shape. I tried quite some different approaches now but none worked ...
luk's user avatar
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6 votes
2 answers
6k views

How can I get the names of the vertex groups these vertices are in?

In my mesh I have few vertices which are in more then 4 vertex groups. I know the indices of those vertices, is there a way to get names of those vertex groups? Many tnx
Slobodan Vidovic's user avatar
6 votes
4 answers
20k views

How to quickly remove all zero-weight vertex groups?

I wonder what is the quickest way to remove vertex groups in which all vertices have zero weight. Currently I got nearly 100 groups listed there after days of hard working, and I'm sure some of them ...
Leon Cheung's user avatar
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6 votes
2 answers
12k views

Using geometry nodes, is it possible to transform vertices, that are in a specific vertex group?

Let's say I create object primitive plane and I create a vertex group. I add one vertex of the plane into the group but leave the other 3. Is it then possible to transform that one vertex in the group ...
Dalibor-P's user avatar
  • 1,034
6 votes
3 answers
596 views

Selecting vertices in the interior of a given grid x by y (vertices)

In geometry nodes, I need to be able to select dynamically those vertices of a given grid of X by Y that are not positioned on the outside border of the grid... that is, if for example you have a grid ...
Vassily Kritis's user avatar
6 votes
1 answer
19k views

How do I copy vertex groups from one object to another?

So, I decided that a previous project contained exactly what I needed to expedite a new project, so I appended the appropriate objects form the previous project to the new one. This was great, because ...
brasshat's user avatar
  • 5,446
6 votes
1 answer
34k views

Cycles: Assign material to vertex group

I know it's possible to have multiple shaders for one object with the internal renderer. This video explains the process. Can I use Cycles to assign a material to a vertex group so that a single ...
Justin's user avatar
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6 votes
1 answer
338 views

Is it possible to animate 2 folds on the same sheet?

As can be seen on the screen shot, I want to animate first folding the top right triangle and then along the center line of the sheet using the 2nd bigger bone. and then a third fold of the left side ...
FranckAnimations's user avatar
6 votes
1 answer
7k views

How to set vertex weights using Blender's Python API?

Looking at the API docs I found VertexGroup.add(index, weight, type), but It cannot be called in Edit Mode. When I try to call it, I always get: RuntimeError: ...
Hatoru Hansou's user avatar
6 votes
1 answer
3k views

Particle system is not using density vertex group

My particle system doesn't seem to be using the vertex group which I set to effect the density. I am a little bit confused as to why this is happening. Here is my blend file http://www.pasteall.org/...
Ayo Adelagun's user avatar
5 votes
3 answers
15k views

How to add a modifier to a collection?

My goal is to reduce the faces of an object using the decimate modifier. The object I'm editing has lots of vertex groups. Blender 2.8 only lets me add the decimate modifier to a single group at once ...
Luatic's user avatar
  • 153
5 votes
3 answers
5k views

How Can I Create a Sculpt Mask Based Purely on Face/Vertex Selection, Instead of By Manually Painting It?

This question gets asked from time to time, and doesn't seem to get any attention. Here's one of the more recent instances: Converting a vertex group into a sculpt mask I find it frustrating that the ...
R-800's user avatar
  • 2,891
5 votes
2 answers
11k views

can you add subdivision surface modifiers to specific vertex groups [duplicate]

i want to make parts of my model seem more smooth but others i want to stay flat.
Daniel Mills's user avatar
5 votes
3 answers
9k views

Weight paint front and back faces at the same time

I want to know how to weight paint the back and front and sides of the selected region at once instead of keep changing the view then doing the same thing. So for example if we have a cube in front ...
Tak's user avatar
  • 6,303
5 votes
4 answers
3k views

Can a Vertex Group be saved as a separate .blend File?

I've created a model using makehuman after editing the hair mesh and recoloring the texture I would like to save this part of the model to be able to reuse it with other models. Can a part of a mesh ...
stacker's user avatar
  • 38.5k
5 votes
1 answer
7k views

Is it possible to see Vertex Weights in Edit Mode in the 3D View?

Is this documentation simply out of date? Is it possible to manipulate vertex weights in Edit Mode in Blender 2.8?
Robin Betts's user avatar
  • 76.4k
5 votes
2 answers
1k views

Set Material to VertexGroup

I have 3 vertexgroups VG1 VG2 VG3 and 3 materials with exactly the same name VG1 VG2 VG2 as the vertexgroups, how I can assign each material to the corresponding vertexgroup in python? Also how I can ...
Tak's user avatar
  • 6,303
5 votes
1 answer
2k views

When joining objects, can blender make a vertex group which contains the vertices of each object that was joined?

I wanted to know if it was possible, natively or with an addon, to make Blender auto create vertex groups when joining objects, by making each joined object a vertex group? A concrete example: I have ...
Felina Faerlaingal's user avatar
5 votes
3 answers
1k views

Pin cloth vertices at a specific set of frames, and un-pin otherwise (in python)

I am using Blender 2.82a and am trying to pin cloth vertices only at a specific set of frames. The broader context is to simulate actions on a cloth, where each action is parameterized by a cloth and ...
ComputerScientist's user avatar
5 votes
2 answers
2k views

Tissue add-on: How to use the Advanced Settings for animation?

Here's a simple example to illustrate. I have a tile component object (selected) and a base mesh object (active). I click the Tessellate button and the operator options box appears. Near the bottom ...
Mentalist's user avatar
  • 19.1k

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