> modifiers

Noise Modifier

modifiers/noise-modifier·v1.3.0

IN:1 OUT:1

SUMMARY

The Noise Modifier displaces each instance using the internal Noise POP. It generates procedural motion and directional flow fields that can be used for turbulence, jitter, and natural-looking movement.

Supports two modes: Simple Mode samples the noise field once to directly displace each instance in space. The effect is immediate and not accumulative over time. Advect Mode moves each instance through the noise field progressively, producing smooth, time-dependent motion.

The Aim Weight parameter controls how quickly each instance rotates toward its direction of motion. Lower values result in gradual orientation changes, while higher values make alignment more immediate.

PARAMETERS

PAGENoise

Group	Group	If there are input groups, specifying a group name in this field will cause this POPX to act only upon the group specified.
Do Falloff	Dofalloff	Enables falloff-based noise intensity control.
Falloff Attribute	Falloffattr	Specifies which attribute to use for falloff values.
[+]Noise Signature	Noisesignature	Number of noise components to compute.
Use Rest Attribute	Userestattr	Uses the rest attribute to stabilize the noise reference space.
Enable Direction from Attribute	Enabledirattr	Reads direction values from a point attribute for scalar noise.
[+]Default Direction	Defaultdir	Default direction vector when using scalar noise without direction attribute.
Direction Attribute	Directionattr	Name of the attribute to use for direction vectors.
Curl Noise	Curlnoise	Generates divergence-free curl noise for fluid-like motion.
[+]Type	Type	Determines the noise type.
Seed	Seed	Numerical value that initializes the randomization.
Period	Period	Period (scale) of the noise field.
Harmonics	Harmon	The number of higher frequency components to layer on top of the base frequency. 0 harmonics give the base shape.
Harmonic Spread	Spread	The factor by which the frequency of a harmonic increases relative to the previous harmonic.
Harmonic Gain	Gain	Amplitude of the Harmonics layered on top of the base frequency.
[+]Amplitude	Amp	The noise values amplitude (a scale on the values output).
[+]Exponent	Exp	Sets the exponent. The internal value is raised by the power of the exponent.
[+]Offset	Offset	Adds an offset to the resulting value.
Output Noise Attribute	Outputnoiseattr	Outputs the computed noise values as a point attribute.
Noise Attribute Name	Noiseattr	Name of the attribute to store noise values when Output Noise Attribute is enabled.

PAGETransform

[+]Transform Order	Xord	Sets the overall transform order for the transformations.
[+]Rotate Order	Rord	Sets the order of the rotations within the overall transform order.
[+]Translate	T	Translate the instances through the noise space.
[+]Rotate	R	Rotate the instances around the corresponding X, Y and Z axes. Angles are given in degrees.
[+]Scale	S	These three fields scale the Source geometry in the three axes.
[+]Pivot	P	The pivot position for the transform rotates and scales.
Translate 4D	T4d	Translates the instances through the 4th noise dimension.

PAGEAffect

[+]Mode	Mode	Switches between Simple Mode and Advect Mode.
Affect Position	Affectposition	Enables noise-based position displacement.
Position Amount	Positionamount	Controls the intensity of position displacement.
Affect Rotation	Affectrotation	Enables noise-based rotation changes.
[+]Rotation Mode	Rotationmode	Determines how noise affects rotation in Simple mode.
Rotation Amount	Rotationamount	Controls the intensity of rotation changes.
Aim Weight	Aimweight	Defines how fast instances rotate toward their direction of motion.
Affect Scale	Affectscale	Enables noise-based scale changes.
Scale Amount	Scaleamount	Controls the intensity of scale changes.
[+]Scale In Range	Scaleinrange	Input range for remapping noise values to scale.
[+]Scale Out Range	Scaleoutrange	Output range for remapping noise values to scale.
Initialize	Initializepulse	Resets advection simulation state.
Start	Startpulse	Begins advection simulation from the current state.
Play	Play	Toggles advection simulation playback.
Step	Steppulse	Advances advection simulation by one frame.

PAGECommon

Bypass	Bypass	Pass through the first input to the output unchanged.
Free Extra GPU Memory	Freeextragpumem	Free memory that has accumulated when output memory has grown and shrunk.
Render Primitives	Renderprimitives	Toggles rendering of POPX Geometry or shows it as point instances only.
Convert to Point Primitives	Converttoptprim	Converts points to primitive points when Render Primitives is toggled off.
SRT / RST	Srtrst	Sets the transform order when using POPX Geometry as built-in TouchDesigner instances.

INPUTS

Input 0 POP – POPX/POP Geometry

OUTPUTS

Output 0 POP – POPX_out1