Noise Shading
Updated: 4 Dec 2023
Shades particles using fractal noise.
Noise Shading
Method #
This node shades particles using values generated by a fractal noise function, similar to the Fractal Noise Generator node but in 3D. The noise function may be sampled by the position of the particle in 3D, or the life of the particle. Useful for adding flickering effects to particles.
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
Position x in local space
Position Y
Position y in local space
Position Z
Position z in local space
Rotation Heading
Rotation around y axis in local space
Rotation Pitch
Rotation around x axis in local space
Rotation Bank
Rotation around z axis in local space
Scale X
Scale along the x axis in local space
Scale Y
Scale along the y axis in local space
Scale Z
Scale along the z axis in local space
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 Num Octaves
How many time the noise generation is iterated.
Noise Scale
Scale the size of the generated fractal noise.
Animaton Rate
The speed at which the fractal noise is animated.
Lacunarity
How large the gaps between larger areas of noise are.
Gain
The overall smoothness of the generated fractal noise.
Intensity Scale
Scales the intensity of the resulting noise values.
Input Channel
Choose how the noise affects the particles.
- Position : 3D noise is generated and applied to particles based on their position in the scene.
- Life : Noise is generated based on the particles life.
- Life With Random Offset : Noise is generated based on the particle life, but is offset based on the particles position.
Radius
Outer radius for which the particles will no longer be coloured.
Inner Radius
Inner radius for which the particles will be coloured at their max.
Falloff Power
How quickly the gradient changes from the inner radius to the outer radius.
Colour
Change the colour of the particles as they spawn.
Blend Mode
Choose how the particle colours blend to the source colours
Blend Amount
Control how much the new shading affects the particles.
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 | Position x in local space |
| Position Y | Position y in local space |
| Position Z | Position z in local space |
| Rotation Heading | Rotation around y axis in local space |
| Rotation Pitch | Rotation around x axis in local space |
| Rotation Bank | Rotation around z axis in local space |
| Scale X | Scale along the x axis in local space |
| Scale Y | Scale along the y axis in local space |
| Scale Z | Scale along the z axis in local space |
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 |
|---|---|
| Num Octaves | How many time the noise generation is iterated. |
| Noise Scale | Scale the size of the generated fractal noise. |
| Animaton Rate | The speed at which the fractal noise is animated. |
| Lacunarity | How large the gaps between larger areas of noise are. |
| Gain | The overall smoothness of the generated fractal noise. |
| Intensity Scale | Scales the intensity of the resulting noise values. |
| Input Channel |
Choose how the noise affects the particles.
|
| Radius | Outer radius for which the particles will no longer be coloured. |
| Inner Radius | Inner radius for which the particles will be coloured at their max. |
| Falloff Power | How quickly the gradient changes from the inner radius to the outer radius. |
| Colour | Change the colour of the particles as they spawn. |
| Blend Mode | Choose how the particle colours blend to the source colours |
| Blend Amount | Control how much the new shading affects the particles. |
| Name | Description | Typical Input |
|---|---|---|
| Position Node | ERROR: Variable not found: {input-node-particles-position-node-description} | ERROR: Variable not found: {input-node-particles-position-node-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 |