Modify Weightmap
Updated: 6 Feb 2025
Adjusts the values in an existing weightmap
Modify Weightmap
Method #
This node modifies an existing weightmap using various methods, allowing you to further control how the weightmap affects the parent mesh.
Parameters
These properties control the 3D transforms of the node. Transforms will generally be inherited by child nodes, although they can be ignored through the Inherit Transform Channels attributes.
Parameter Details Position X
The objects position along the local x-axis.
Position Y
The objects position along the local y-axis.
Position Z
The objects position along the local z-axis.
Rotation Heading
The objects rotation around the local y-axis.
Rotation Pitch
The objects rotation around the local x-axis.
Rotation Bank
The objects rotation around the local z-axis.
Scale X
The objects scale along the local x-axis.
Scale Y
The objects scale along the local y-axis.
Scale Z
The objects scale along the local z-axis.
Control the inheritance of the transforms from the parent.
Parameter Details Position
Toggle inheritance of the Position from the parent.
Rotation
Toggle inheritance of the Rotation from the parent.
Scale
Toggle inheritance of the Scale from the parent.
World Position Only
Inherit the world position from the parent only, rotation and scale will be ignored. Overrides above properties.
Inherit Time
Toggle inheritance of time from the parent.
These properties control the core behaviours of the node.
Parameter Details Weightmap
Add a weight map to determine where the deformer is more or less effective.
Apply Mode
Choose whether the weightmap applies to the individual vertices or the mesh chunks.
- Vertices : The generated weightmap is applied to the mesh vertices.
- Chunks : The generated weightmap is applied to the separated mesh pieces.
Transform Space
Choose which transform space the weightmap uses. Does not affect falloffs.
- Local : Weights are calculated in the Local Space of the object, so transformations of the parent mesh will not affect the generated weightmap.
- World : Weights are calculated in the World Space of the scene, so transformations of the parent mesh will apply the weightmap differently depending on the mesh position.
Blend Amount
Blend the new weightmap over the existing weightmap.
Mode
Control how to modify the existing weightmap
- Value : Uses the Gain and Offset to simply adjust the existing weightmaps values.
- Inverted Value : Inverts the existing weightmap, then uses the Gain and Offset to adjust its values.
- Distance From Offset : Values are offset based on their distance from the middle value.
- Inverted Distance From Offset : Inverts the existing weightmap, then values are offset based on their distance from the middle value.
- Sine Distance From Offset : Values are offset based on their distance from the middle value, but modulated using a sine wave to increase the overall effect.
- Fade From Offset : Increasing the Offset fades away the existing weightmap.
- Fade To Offset : Increasing the Offset fades in the inverse of the existing weightmap.
Gain
Scale the generated weight values.
Offset
Offset the generated weights.
Time Mode
How the weightmap updates with relation to the timecode.
- Locked To Timecode :
- Running / Loopable :
Show Weightmap
Visualise the weightmap as vertex colours on the source geometry.
These properties control where the deformer affects the geometry.
Parameter Details Falloff Mode
Which shape to use to calculate the falloff.
- Off :
- Spherical :
- Cylindrical :
- Planar :
- Procedural :
- Cubic :
Falloff Axis
Which axis the falloff should be oriented on.
- X :
- Y :
- Z :
Falloff Direction
When using Planar mode, which directions to use to calculate the falloff.
- Bidirectional :
- Negative :
- Positive :
Falloff Easing Mode
Interpolation method used to calculate the falloff within its range of influence.
- Linear :
- Sine :
- Quadratic :
- Cubic :
- Circular :
- Bounce Back :
- Elastic :
Falloff Size X
Size of the falloff range along the X axis.
Falloff Size Y
Size of the falloff range along the Y axis.
Falloff Size Z
Size of the falloff range along the Z axis.
Outer Range
The outer range from which the falloff is calculated from.
Inner Range
The inner range from which the falloff is calculated from.
Invert
Invert the direction of the falloff.
Curve Power
How quickly the falloff drops to 0 at the outer falloff.
Curve
A preview of the falloff easing curve, alongside controls for editing it. Click the curve to add control points, and drag them to shape how the effect strength blends between the Inner Range (100%) and Outer Range (0%). The curve remaps the falloff gradient produced by the Size, Range and Curve Power settings.
The properties control the time at which the node is active. See Timeline for editing time segments.
Parameter Details Duration
Control the duration of the node’s time segment.
- Composition Duration : Use the length of the composition for the node’s time segment duration.
- Custom : Set a custom duration for the node’s time segment.
Node Time
The custom start and end time for the node.
Duration (Timecode)
The length of the node’s time segment (in time).
Duration (Frames)
The length of the node’s time segment (in frames).
Time Segment Enabled
Set whether the node’s time segment is enabled or not in the Timeline.
Inputs
These properties control the 3D transforms of the node. Transforms will generally be inherited by child nodes, although they can be ignored through the Inherit Transform Channels attributes.
| Parameter | Details |
|---|---|
| Position X | The objects position along the local x-axis. |
| Position Y | The objects position along the local y-axis. |
| Position Z | The objects position along the local z-axis. |
| Rotation Heading | The objects rotation around the local y-axis. |
| Rotation Pitch | The objects rotation around the local x-axis. |
| Rotation Bank | The objects rotation around the local z-axis. |
| Scale X | The objects scale along the local x-axis. |
| Scale Y | The objects scale along the local y-axis. |
| Scale Z | The objects scale along the local z-axis. |
Control the inheritance of the transforms from the parent.
| Parameter | Details |
|---|---|
| Position | Toggle inheritance of the Position from the parent. |
| Rotation | Toggle inheritance of the Rotation from the parent. |
| Scale | Toggle inheritance of the Scale from the parent. |
| World Position Only | Inherit the world position from the parent only, rotation and scale will be ignored. Overrides above properties. |
| Inherit Time | Toggle inheritance of time from the parent. |
These properties control the core behaviours of the node.
| Parameter | Details |
|---|---|
| Weightmap | Add a weight map to determine where the deformer is more or less effective. |
| Apply Mode |
Choose whether the weightmap applies to the individual vertices or the mesh chunks.
|
| Transform Space |
Choose which transform space the weightmap uses. Does not affect falloffs.
|
| Blend Amount | Blend the new weightmap over the existing weightmap. |
| Mode |
Control how to modify the existing weightmap
|
| Gain | Scale the generated weight values. |
| Offset | Offset the generated weights. |
| Time Mode |
How the weightmap updates with relation to the timecode.
|
| Show Weightmap | Visualise the weightmap as vertex colours on the source geometry. |
These properties control where the deformer affects the geometry.
| Parameter | Details |
|---|---|
| Falloff Mode |
Which shape to use to calculate the falloff.
|
| Falloff Axis |
Which axis the falloff should be oriented on.
|
| Falloff Direction |
When using Planar mode, which directions to use to calculate the falloff.
|
| Falloff Easing Mode |
Interpolation method used to calculate the falloff within its range of influence.
|
| Falloff Size X | Size of the falloff range along the X axis. |
| Falloff Size Y | Size of the falloff range along the Y axis. |
| Falloff Size Z | Size of the falloff range along the Z axis. |
| Outer Range | The outer range from which the falloff is calculated from. |
| Inner Range | The inner range from which the falloff is calculated from. |
| Invert | Invert the direction of the falloff. |
| Curve Power | How quickly the falloff drops to 0 at the outer falloff. |
| Curve | A preview of the falloff easing curve, alongside controls for editing it. Click the curve to add control points, and drag them to shape how the effect strength blends between the Inner Range (100%) and Outer Range (0%). The curve remaps the falloff gradient produced by the Size, Range and Curve Power settings. |
The properties control the time at which the node is active. See Timeline for editing time segments.
| Parameter | Details |
|---|---|
| Duration |
Control the duration of the node’s time segment.
|
| Node Time | The custom start and end time for the node. |
| Duration (Timecode) | The length of the node’s time segment (in time). |
| Duration (Frames) | The length of the node’s time segment (in frames). |
| Time Segment Enabled | Set whether the node’s time segment is enabled or not in the Timeline. |
| Name | Description | Typical Input |
|---|---|---|
| Generated Weightmap | Add a weightmap to vary the strength of the deformer across the surface. | Generate Weightmap |
| Transform Modifiers | Apply the transforms of another node to this node. | Null |
| Target Node | Modifiy the rotations of the node to always direct the z axis towards the input. | Null |
| Local Transform Override | Apply the transforms of another node to this node, relative to its parent. | Null |
| Parameter Value Array | Used to set the parameters of the node using an array. | Parameter Array |
| Falloff Node | Use an input node to control the transformation values of the falloff. | Falloff |