Notch Notch Manual 0.9.23
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Curl Noise Affector

Curl Noise Affector

Applies curl noise velocities to a field.



Method #

Applies a curl noise function to the movement vectors of a field, creating a random fluid motion.

The outputs from this node are just its transforms, useful for having multiple nodes follow the same motions without controlling each of their transforms individually.


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.

Position XMove along the local x-axis.
Position YMove along the local y-axis.
Position ZMove along the local z-axis.
Rotation HeadingRotate around the local y-axis.
Rotation PitchRotate around the local x-axis.
Rotation BankRotate around the local z-axis.
Scale XScale along the local x-axis.
Scale YScale along the local y-axis.
Scale ZScale along the local z-axis.

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

Position XToggle inheritance of the X Position from the parent.
Position YToggle inheritance of the Y Position from the parent.
Position ZToggle inheritance of the Z Position from the parent.
Rotation HeadingToggle inheritance of the Rotation Heading from the parent.
Rotation PitchToggle inheritance of the Rotation Pitch from the parent.
Rotation BankToggle inheritance of the Rotation Bank from the parent.
Scale XToggle inheritance of the X Scale from the parent.
Scale YToggle inheritance of the Y Scale from the parent.
Scale ZToggle inheritance of the Z Scale from the parent.
World Position OnlyInherit the world position from the parent only, rotation and scale will be ignored. Overrides above properties.
Inherit TimeToggle inheritance of time from the parent.

These properties control the core behaviours of the node.

Fluid Simulation SpeedControls the speed of the fluid simulation.
Curl Noise AmountThe scale of the velocity being applied to the voxels in the field.
Noise SizeChange the size of the generated curl noise.
Normalise Noise ParametersThe curl noise size is normalised so that the vector velocities do not overlap with other voxels.
RadiusOuter Radius for the curl noise, outside of thich the curl noise function no longer applies.
RandomnessThe randomness of the new velocities added to the simulation.


NameDescriptionTypical Input
Velocity TransformScale the resulting velocities from the curl noise to exaggerate along certain directions.Velocity Affector
Mask NodeMasks the areas in which the affector won’t apply.Image Plane
Affected EmittersControl which Emitters are affected by the Affector. By default, all emitters in the field system are affected.Primitive Emitter
Transform ModifiersApply the transforms of another node to this node.Null
Target NodeModifiy the rotations of the node to always direct the z axis towards the input.Null
Local Transform OverrideApply the transforms of another node to this node, relative to its parent.Null