# Vertex Weight Mix Modifier¶

This modifier mixes a second vertex group (or a simple value) into the affected vertex group, using different operations.

Important

This modifier does implicit clamping of weight values in the standard (0.0 to 1.0) range. All values below 0.0 will be set to 0.0, and all values above 1.0 will be set to 1.0.

Note

You can view the modified weights in Weight Paint Mode.
This also implies that you will have to disable the *Vertex Weight Mix* modifier
if you want to see the original weights of the vertex group you are editing.

## Options¶

- Vertex Group A
- The vertex group to affect.
- Default Weight A
- The default weight to assign to all vertices not in the given vertex group.
- Vertex Group B
- The second vertex group to mix into the affected one. Leave it empty if you only want to mix in a simple value.
- Default Weight B
- The default weight to assign to all vertices not in the given second vertex group.
- Mix Mode
How the vertex group weights are affected by the other vertex group’s weights.

- Replace weights
- Replaces affected weights with the second group’s weights.
- Add to weights
- Adds the values of
*Group B*to*Group A*. - Subtract from weights
- Subtracts the values of
*Group B*from*Group A*. - Multiply weights
- Multiplies the values of
*Group B*with*Group A*. - Divide weights
- Divides the values of
*Group A*by*Group B*. - Difference
- Subtracts the smaller of the two values from the larger.
- Average
- Adds the values together, then divides by 2.

- Mix Set
Choose which vertices will be affected.

- All vertices
- Affects all vertices, disregarding the vertex groups content.
- Vertices from group A
- Affects only vertices belonging to the affected vertex group.
- Vertices from group B
- Affects only vertices belonging to the second vertex group.
- Vertices from one group
- Affects only vertices belonging to at least one of the vertex groups.
- Vertices from both groups
- Affects only vertices belonging to both vertex groups.

Important

When using

*All vertices*,*Vertices from group B*or*Vertices from one group*, vertices might be added to the affected vertex group.

### Influence/Mask Options¶

Those settings are the same for the three *Vertex Weight* modifiers,
see the Vertex Weight Edit modifier page.

## Example¶

Here is and example of using a texture and the mapping curve to generate weights used by the Wave modifier.

The blend-file, TEST_4 scene.