Poids de sommet

Référence

Mode

Mode Édition et Weight Paint

Panneau

Sidebar region ‣ Vertex Weights

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Panneau Vertex Weights

(1) Vertex Group Categories, (2) Weight Table, (3) Tools.

As mentioned before in Vertex Groups each entry in a vertex group also contains a weight value in the range of (0.0 to 1.0). Blender provides a Vertex Weights panel from where you can get (and edit) information about the weight values of each vertex of a mesh. That is: to which vertex groups the vertex is assigned with which weight value.

The Vertex Weights panel can be found in the Sidebar region of the 3D View. It is available in Edit Mode and in Weight Paint Mode (when Vertex Selection masking is enabled as well).

Vertex Group Categories

Actually we do not have any strict categories of vertex groups in Blender. Technically they all behave the same way. However, we can identify two implicit categories of vertex groups:

Deform Groups

These vertex groups are sometimes also named “weight groups” or “weight maps”. They are used for defining the weight tables of armature bones. All deform groups of an object are strictly related to each other via their weight values.

Strictly speaking, the sum of all deform weights for any vertex of a mesh should be exactly 1.0. In Blender this constraint is a bit relaxed (see below). Nevertheless, deform groups should always be seen as related to each other. Hence, we have provided a filter that allows restricting the Vertex Weight panel to display only the deform bones of an object.

Autres groupes

All other usages of vertex groups are summarized into the Other category. These vertex groups can be found within Shape keys, Modifiers, etc. There is really no good name for this category, so we kept it simple and named it Other.

Weight Table (tableau de poids)

Le tableau de poids montre tous les poids associés au sommet actif (active vertex). Notez qu’un sommet ne doit pas nécessairement être associé à un groupe de sommets. Dans ce cas, le panneau Vertex Weights n’est pas affiché.

Astuce

Le sommet actif

That is the most recently selected vertex. This vertex is always highlighted so that you can see it easily in the mesh. If the active vertex does not have weights, or there is no active vertex selected at the moment, then the Vertex Weights Panel disappears.

Chaque ligne dans le tableau de poids comprend quatre éléments actifs :

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Changer de groupe actif.

Définir le groupe actif

As soon as you select any of the Vertex Group Names in the Weight table, the referenced vertex group becomes the new active group.

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Enable display of weights in Edit Mode.

Affichage des poids en Mode Édition

When you are in Edit Mode, you can make the weights of the active group visible on the mesh:

Search the Mesh Display panel in the Sidebar region. And there enable the Show Weights option. Now you can see the weights of the active vertex group displayed on the mesh surface.

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Poids en Mode Édition.

Édition des poids en Mode Édition

It is now very easy to work with vertex groups in Edit Mode. All edit options of the mesh are available and you have direct visual control over how your weights change when you edit the weight values.

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Changer une valeur de poids.

Changement d’un poids

Vous pouvez entrer une nouvelle valeur manuellement (cliquez sur le nombre et éditez la valeur), ou vous pouvez changer le poids en LMB et tout en maintenant appuyé le bouton de souris, glissez à droite ou à gauche pour augmenter / diminuer la valeur de poids. Vous pouvez aussi utiliser les flèches droite / gauche affichées de part et d’autre des valeurs de poids pour changer le poids par pas.

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Coller des poids.

Collage

LMB the Paste button allows you to forward a single weight of the active vertex to all selected vertices. But note that weights are only pasted to vertices which already have a weight value in the affected vertex group.

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Supprimer des poids.

Suppression de poids

LMB the Delete button will instantly remove the weight from the active vertex. Thus the entire row disappears when you click on the delete icon.

Outils

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Panneau Vertex Weights

Normalize

Normalizes the weights of the active vertex. That is all weights of the active vertex are recalculated such that their relative weight is maintained and the weight sum is 1.0.

Copy

Copies all weights defined for the active vertex to all selected vertices. Thus all previously defined weights are overwritten.

Astuce

Le réglage de filtre est respecté

Note that both tools only work on the vertex groups currently displayed in the Weights Table. So if for example only the Deform weights are displayed, then Normalize and Copy only affect the Deform bones.

Verrouillage

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Panneau Locked Vertex Weights.

Whenever a weight group is locked, all data changing tools get disabled:

  • Normalize the vertex weights.

  • Copy the vertex weights.

  • Change the weight of the active vertices.

  • Coller aux sommets sélectionnés.

Astuce

Le réglage de filtre est respecté

If you have for example all deform weight groups unlocked and all other vertex groups locked, then you can safely select Deform from the Filter row and use all available tools from the Weight Table again.