Studio and Graph

Weight Map

Creating, converting and combining weight maps - the 0..1 per-vertex masks that gate deformers, sculpting and Wrangle expressions.

Studio and Graph › Weight Map

Apply Weight Map

Blends two versions of the same mesh vertex by vertex, with a weight map deciding how far each vertex travels between them. Where the weight is 0 the vertex stays exactly where Mesh put it; where i...

When to use it

Blends two versions of the same mesh vertex by vertex, with a weight map deciding how far each vertex travels between them. Where the weight is 0 the vertex stays exactly where Mesh put it; where it is 1 it lands exactly where Target has it; in between it slides along the straight line joining the two.

That makes it the universal way to make any deformation partial. Run whatever operation you like at full strength, feed the before into Mesh and the after into Target, and the weight map decides which parts of the model actually receive it. No operation needs its own masking option, because this one node masks all of them.

How to use it

1. 1

   Wire the original mesh into Mesh

2. 2

   Wire the deformed version into Target

3. 3

   Wire a weight map in, or paint one with Paint Weight Map

4. 4

   The output updates as soon as any of the three changes

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Studio and Graph › Weight Map

Create Weight Map

Where a weight map comes from when you are not painting it by hand. One value between 0 and 1 per vertex, derived from something the mesh already knows about itself, and from there it goes to Apply...

When to use it

Where a weight map comes from when you are not painting it by hand. One value between 0 and 1 per vertex, derived from something the mesh already knows about itself, and from there it goes to Apply Weight Map or into any node that takes a Weights pin.

How to use it

1. 1

   Connect the mesh the map is for

2. 2

   Connect a selection or landmarks if the mode you want needs one

3. 3

   Pick the mode and set its parameters

4. 4

   The map updates as soon as any input changes

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Studio and Graph › Weight Map

Distortion Mask

Measures per-vertex stretch between two meshes that share vertex count and order, and hands you a 0 to 1 weight map. This is how you find the regions a conform, a wrap or a pose damaged, instead of...

When to use it

Measures per-vertex stretch between two meshes that share vertex count and order, and hands you a 0 to 1 weight map. This is how you find the regions a conform, a wrap or a pose damaged, instead of hunting for them by eye.

How to use it

1. 1

   Wire the mesh as it is now into Mesh, and the same mesh from before the damage into Target

2. 2

   Press Measure

   Max Distortion in the details panel is in log units, so 0.69 means something on this mesh doubled in size.

3. 3

   Wire Weights into Guided Delta Mush to relax the damage, or into a mask to look at it

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Studio and Graph › Weight Map

Mesh Diff

Two meshes in, per-vertex distance out as a normalised weight map, with the minimum, maximum and average alongside it in the details panel. The first mesh passes through unchanged.

When to use it

Two meshes in, per-vertex distance out as a normalised weight map, with the minimum, maximum and average alongside it in the details panel. The first mesh passes through unchanged.

How to use it

1. 1

   Connect Mesh and Target

2. 2

   Choose a Topology Mode

3. 3

   Set the distance threshold and the display range

4. 4

   Click Compare

5. 5

   Send WeightMap into Apply Weight Map, Blend or Delta Mush to mask with it

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Studio and Graph › Weight Map

Paint Weight Map

The hand-painted weight map. Select the node, brush the region you want onto the mesh in the viewport, and press Accept to publish it on the WeightMap pin.

When to use it

The hand-painted weight map. Select the node, brush the region you want onto the mesh in the viewport, and press Accept to publish it on the WeightMap pin.

Reach for it when the region you need is a judgement call rather than something the mesh can be asked about. Create Weight Map covers everything derivable - curvature, landmark proximity, a bone's skin weights - and it re-derives itself when the mesh changes, which strokes cannot. Paint the ones only you can decide: which corner of a cloth is pinned, where a muscle attaches.

How to use it

1. 1

   Connect the mesh you want to paint on

2. 2

   Select the node to pick up the brush

3. 3

   Paint the region in the viewport

4. 4

   Press Accept to publish the map

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Studio and Graph › Weight Map

Threshold Weight Map

Turns a weight map into a hard 1 or 0. Everything that passes the test comes out at 1, everything else at 0.

When to use it

Turns a weight map into a hard 1 or 0. Everything that passes the test comes out at 1, everything else at 0.

How to use it

1. 1

   Connect a mesh and a weight map

2. 2

   Set the threshold and comparison mode

3. 3

   The output updates as soon as either changes

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Studio and Graph › Weight Map

Weight Map Math

Combines weight maps: add, subtract, multiply, min and max, invert, remap, smooth, lerp, power. This is where a usable mask gets built out of the raw ones other nodes produce. Multiply a distortion...

When to use it

Combines weight maps: add, subtract, multiply, min and max, invert, remap, smooth, lerp, power. This is where a usable mask gets built out of the raw ones other nodes produce. Multiply a distortion map by a hand-painted region to limit a repair. Invert a coverage map to select what is missing. Power a falloff to sharpen it.

Operations that need one map use input A. Smooth also needs the Mesh input, because smoothing follows mesh connectivity rather than index order, and without that wire it has no neighbours to average over.

The output updates on its own, so there is no button.

How to use it

1. 1

   Connect weight map A, and B if the operation needs two

2. 2

   For Smooth, also connect the Mesh input

3. 3

   Choose an operation and set its parameters

4. 4

   The output updates as soon as any input changes

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Studio and Graph › Weight Map

Weight Map Missing Vertices

Marks which parts of a source mesh are actually covered by a target mesh. Vertices with a close match come out at 1, vertices with none at 0, with a falloff in between.

When to use it

Marks which parts of a source mesh are actually covered by a target mesh. Vertices with a close match come out at 1, vertices with none at 0, with a falloff in between.

How to use it

1. 1

   Connect the mesh you want the mask for

2. 2

   Connect the target, the mesh that may be missing regions

3. 3

   Set the threshold and the falloff

4. 4

   Click Compute

5. 5

   Send the WeightMap into Apply Weight Map or any blend node

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