Noise Shading

Shades particles using fractal noise.

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

Transform

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

Inherit Transform Channels

Toggle which transform channels should be inherited from the parent node. By default, all transforms will be inherited.

Parameter	Details
Position X	Toggle inheritance of the X Position from the parent.
Position Y	Toggle inheritance of the Y Position from the parent.
Position Z	Toggle inheritance of the Z Position from the parent.
Rotation Heading	Toggle inheritance of the Rotation Heading from the parent.
Rotation Pitch	Toggle inheritance of the Rotation Pitch from the parent.
Rotation Bank	Toggle inheritance of the Rotation Bank from the parent.
Scale X	Toggle inheritance of the X Scale from the parent.
Scale Y	Toggle inheritance of the Y Scale from the parent.
Scale Z	Toggle inheritance of the Z 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.

Attributes

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

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