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Vmath : Vertex Group Weights

by Inlet·Workflow

Images © Inlet. Used for product review; image policy.

Why we like it

Vmath stands out in the Superhive library for treating vertex groups like values in a calculator, with set-style Union and Intersect operations alongside standard arithmetic.

What is Vmath : Vertex Group Weights?

Vmath : Vertex Group Weights brings math-based control to vertex groups in Blender. Add merges two vertex groups by summing the weights of each vertex for stacked influences, while Subtract removes the weights of one group from another for finer control than Blender's default of setting values to zero. Multiply and Divide adjust vertex weights, reducing influence where either or both groups have minimal weight while preserving existing weight elsewhere.

Union captures the highest weight value from two groups for each vertex, retaining the strongest influence from both, and Intersect identifies the minimum weight to isolate regions of shared influence. Invert reverses weights within a group, turning high values to low and low to high for a quick negation of a group's effect.

A Pro version adds Batch Editing, which applies an operation to all unlocked vertex groups at once, and Vertex Masking, which limits changes to a selected portion of the mesh by choosing vertices in Edit Mode and enabling the paint mask in Weight Paint Mode. A demo video is available.

Who is Vmath : Vertex Group Weights best for?

Vmath : Vertex Group Weights is best for blender artists managing vertex groups who want operation-based control over weight painting.

How much does Vmath : Vertex Group Weights cost?

Vmath : Vertex Group Weights is completely free to download and use.

Key features

  • Add merges two vertex groups by summing each vertex's weights for stacked influences
  • Subtract removes the weights of one vertex group from another for finer control than setting values to zero
  • Union captures the highest weight from two groups per vertex; Intersect identifies the minimum weight to isolate shared influence
  • Invert reverses weights within a group, turning high values to low and vice versa
  • Multiply and Divide adjust weights, reducing influence where either group has minimal weight
  • Pro adds Batch Editing to apply an operation to all unlocked groups, and Vertex Masking to affect only selected vertices
  • Assignable keyboard shortcuts: right-click a button and choose Assign Shortcut

Tags

#blender#vertex groups#weight paint#weights#rigging#addon#batch editing

Frequently asked questions

What Blender versions does Vmath : Vertex Group Weights support?

Vmath : Vertex Group Weights lists compatibility with Blender versions 2.93 through 5.0. The Pro version was updated for Blender 4.4, including changes to its batch functionality and support for assigning keyboard shortcuts. The standard version is noted as untested on Blender 4.4. Check the developer's page for the latest details on which build matches your Blender installation before adding it to your workflow.

How does Vertex Masking work in Vmath Pro?

Vmath Pro's Vertex Masking lets you manipulate only a selected portion of the mesh instead of the entire model. You activate it by choosing your desired vertices in Edit Mode and turning on the paint mask in Weight Paint Mode. This confines the operation to the masked region. Vertex Masking is one of the two advanced features exclusive to the Pro version, alongside Batch Editing, so the standard version applies operations without this masking option.

What does Batch Editing do in Vmath Pro?

Vmath Pro's Batch Editing applies an operation to all vertex groups simultaneously with a single click, bypassing any locked groups. In the 1.1 update the batch function is no longer limited to the Initial item and can be used on Operators and Results too. The batch buttons are now toggles located next to the Initial, Operator and Result selection boxes, and setting Result and Initial to batch applies the operation to all unlocked groups at once.

How much does Vmath : Vertex Group Weights cost?

Vmath : Vertex Group Weights is listed as free in this catalog. The addon is distributed under the GPL license and comes in a standard version and a Pro version that adds Batch Editing and Vertex Masking. For current licensing terms and to confirm which version you need, visit the developer's page. Documentation is also referenced for guidance on using the operations.

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