Noise Weight
Updated: 23 Sep 2025
Generates weight values using noise functions.
Noise Weight
Method #
Generates weight values using noise functions. These can then be used to vary the strength of affectors on the parent particle system.
The output from this node are particle weights which are unique to the parent particle system, so can’t be used to influence other particle systems.
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 Noise Mode
Choose which type of noise to use to generate the particle weights.
- Random Noise : Use random noise to generate the weights.
- FBM : Use FBM noise to generate the weights.
Seed
Sets the seed when using “Random Noise”.
Num Octaves
How many times the noise generation is iterated.
Lacunarity
How large the gaps between larger areas of noise are.
Gain
The overall smoothness of the generated noise.
Noise Scale
TScale the size of the generated noise.
Animation Rate
The speed at which the fractal noise animated.
Update Time Mode
How the node updates with relation to the timecode.
- Locked To Timecode : The node’s animations are locked to the timecode and the same time will always yield the same result.
- Running / Loopable : The node’s animations are disconnected from the timecode and will run seamlessly at the end of the composition.
Threshold Mode
Select how the threshold value behaves.
- Ramp : Values below the threshold value will fade progressively to 0.
- Threshold : Values below the threshold value will be 0.
Threshold
Minimum value threshold for where the noise will be generated.
Invert Value
Invert the value of the noise.
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 |
|---|---|
| Noise Mode |
Choose which type of noise to use to generate the particle weights.
|
| Seed | Sets the seed when using “Random Noise”. |
| Num Octaves | How many times the noise generation is iterated. |
| Lacunarity | How large the gaps between larger areas of noise are. |
| Gain | The overall smoothness of the generated noise. |
| Noise Scale | TScale the size of the generated noise. |
| Animation Rate | The speed at which the fractal noise animated. |
| Update Time Mode |
How the node updates with relation to the timecode.
|
| Threshold Mode |
Select how the threshold value behaves.
|
| Threshold | Minimum value threshold for where the noise will be generated. |
| Invert Value | Invert the value of the noise. |
| Name | Description | Typical Input |
|---|---|---|
| Affected Emitters | Choose which particle emitters can be affected by the affector. | Primitive Emitter |
| 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 |