> falloffs

Noise Falloff

falloffs/noise-falloff·v1.5.1

IN:1 OUT:1

SUMMARY

Noise Falloff samples 2D, 3D or 4D Perlin or Simplex noise at every point's P, or at its Rest position with Use Rest Attribute so the pattern stays fixed while the points deform, and writes the value as the falloff weight. Seed, Period, Harmonics, Amplitude, Exponent and Offset shape the noise, and Normalized Noise keeps it in the 0 to 1 range.

The Transform page places the noise field in space, and Translate 4D animates through the fourth dimension of the 4D types. Like every POPX falloff, it adds optional Remap controls (clamp, fit, invert, ramp) and a Combine Operation with the falloff already on the points, and Preview Falloff colors the points by the result.

PARAMETERS

PAGENoise

Group	Group	If there are input groups, specifying a group name in this field will cause this POP to act only upon the group specified.
Use Rest Attribute	Userestattr	Enable sampling the noise at the rest position, which keeps it stable under deformation.
[+]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.
Normalized Noise	Normalizednoise	Remap the noise to the 0 to 1 range.
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.

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 points through the noise space.
[+]Rotate	R	Rotate the points 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 point for the transform rotates and scales.
Translate 4D	T4d	Translates the points through the 4th noise dimension.

PAGEFalloff

[+]Combine Operation	Combineop	Specify how to combine this falloff with the existing falloff value.
Combine Falloff Attribute	Combattrscope	Sets the existing falloff attribute to combine with.
Swap Operation Order	Swaporder	Swaps the order of the operands. A operation B is changed to B operation A.
Combine Strength	Combstrength	Sets the blend of the combine operation, from 0 to 1.
Output Falloff Attribute	Outputfalloffattr	Name of the attribute the falloff is written to.
Preview Falloff	Previewfalloff	Enable coloring the points by the falloff.
[+]Falloff Ramp	Fallofframp	Selects the color ramp of the preview.
Open Custom Ramp Editor	Opencustomrampeditor	Open the editor of the custom preview ramp.
Reset Custom Ramp	Resetcustomramp	Resets the custom preview ramp.

PAGERemap

Enable Remap	Remap	Enable the remap controls.
Clamp	Clamp	Clamps the falloff values to the 0-1 range.
Fit	Fit	Enable fitting the values from the input range to the output range.
Auto Input Min Max	Auto	When on, the actual minimum and maximum values are used as the input range.
Input Min	Inputmin	Sets the minimum of the input range.
Input Max	Inputmax	Sets the maximum of the input range.
Output Min	Outputmin	Sets the minimum of the output range.
Output Max	Outputmax	Sets the maximum of the output range.
Invert	Invert	Invert the falloff, outputting 1 minus the value.
Enable Ramp Remap	Enablerampremap	Enable remapping the falloff through a ramp.
Open Ramp Editor	Openrampeditor	Opens the remap ramp editor.
Reset Ramp	Resetramp	Resets the remap ramp.
Custom Ramp TOP	Customramptop	Reference to a TOP used as the remap ramp, overriding the ramp editor.

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	Whether to render the full POPX geometry. When off, only point instances are drawn.
Convert to Point Primitives	Converttoptprim	Enable converting points to point primitives when Render Primitives is off.
SRT / RST	Srtrst	Sets the transform order, SRT or RST, used when the points are rendered as TouchDesigner instances.

INPUTS

Input 0 POP - POPX/POP Geometry

OUTPUTS

Output 0 POP - POPX/POP Geometry