> falloffs

Curve Falloff

falloffs/curve-falloff·v1.3.0

IN:2 OUT:1

SUMMARY

The Curve Falloff generates a Falloff Attribute based on distance calculations from curve geometry. It provides precise control over falloff distribution using curve-based distance fields with adjustable min/max distance ranges.

It supports multiple falloff modes: distance to the closest point on the curve, the normalized position along the curve of the closest point multiplied by distance, and the normalized position along the curve of the closest point.

Includes curve resampling options for optimizing performance and visualization, along with complete spatial transformation controls.

PARAMETERS

PAGECurve

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.
Curve Geometry (POP)	Curvegeometry	Reference to curve geometry. Used when Input 1 is not connected.
Display Curve	Displaycurve	When enabled, renders a visual representation of the curve in the viewport for reference.
[+]Display Color	Displaycolor	Color used to display the curve when Display Curve is enabled.
[+]Mode	Mode	Calculation method for generating falloff values from the curve.
Min Distance	Mindistance	Minimum distance value for falloff calculation range.
Max Distance	Maxdistance	Maximum distance value for falloff calculation range.
[+]Resample Method	Resamplemethod	Line strip resample method.
Divisions	Resampledivs	The number of divisions.

Max Distance

Resamplemaxdist

Maximum distance between points.

PAGECurve

Maximum Number of Vertices	Maxverts	Sets the number of vertices to be allocated.
Max Tries for Binary Search	Maxtries	Max number of iterations for binary search when linearly resampling.
[+]Transform Order	Xord	Order in which Scale, Rotate, and Translate operations are applied to the curve.
[+]Rotate Order	Rord	Order in which rotations around the X, Y, and Z axes are applied.
[+]Translate	T	Translation offset applied to the curve in world space.
[+]Rotate	R	Rotation angles in degrees around the X, Y, and Z axes.
[+]Scale	S	Scale factors applied to the curve along each axis.
Uniform Scale	Scale	Uniform scaling factor applied equally across all axes.
[+]Pivot	P	Pivot point around which rotations and scaling are performed.

PAGEFalloff

[+]Combine Operation	Combineop	Mathematical operation used to combine this falloff with existing falloff values.
Combine Falloff Attribute	Combattrscope	Specifies which falloff attribute to combine with when Combine Operation is not set to Set.
Swap Operation Order	Swaporder	Reverses the order of operands in the combine operation (A op B becomes B op A).
Combine Strength	Combstrength	Blending factor for the combine operation, ranging from 0 (no effect) to 1 (full effect).
Output Falloff Attribute	Outputfalloffattr	Name of the attribute where the final falloff values will be stored.
Preview Falloff	Previewfalloff	When enabled, visualizes falloff values using a color ramp.
[+]Falloff Ramp	Fallofframp	Color ramp preset used for visualizing falloff values when Preview Falloff is enabled.
Open Custom Ramp Editor	Opencustumrampeditor	Opens the custom color ramp editor for defining a custom falloff visualization gradient.
Reset Custom Ramp	Resetcustomramp	Resets the custom color ramp to its default state.

PAGENoise

Apply Noise

Applynoise

When enabled, adds procedural noise to the falloff values for organic variation.

[+]Combine Operation

Combineopnoise

How noise values are combined with the base falloff (Add or Multiply).

PAGENoise

[+]Type	Type	Noise algorithm type (Perlin, Simplex, etc.).
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.

[+]Transform Order	Xordnoise	Sets the overall transform order for the transformations.
[+]Rotate Order	Rordnoise	Sets the order of the rotations within the overall transform order.
[+]Translate	Tnoise	Translate the points through the noise space.
[+]Rotate	Rnoise	Rotate the points around the corresponding X, Y and Z axes. Angles are given in degrees.
[+]Scale	Snoise	These three fields scale the Source geometry in the three axes.
[+]Pivot	Pnoise	The pivot point for the transform rotates and scales.

PAGENoise

Translate 4D

T4dnoise

Translates the points through the 4th noise dimension.

PAGERemap

Enable Remap	Remap	Enables remapping controls for adjusting falloff value range and distribution.
Clamp	Clamp	When enabled, constrains falloff values to the 0-1 range.
Fit	Fit	Enables remapping of falloff values from an input range to an output range.
Auto Input Min Max	Auto	Automatically determines input range from actual min/max falloff values.
Input Min	Inputmin	Minimum value of the input range for remapping.
Input Max	Inputmax	Maximum value of the input range for remapping.
Output Min	Outputmin	Minimum value of the output range for remapping.
Output Max	Outputmax	Maximum value of the output range for remapping.
Invert	Invert	Reverses the falloff values (1 - value).
Enable Ramp Remap	Enablerampremap	Applies a custom curve defined by a ramp to remap the falloff values.
Open Ramp Editor	Openrampeditor	Opens the ramp editor for defining the custom remapping curve.
Reset Ramp	Resetramp	Resets the remap ramp editor.
Custom Ramp TOP	Customramptop	Reference to an external TOP for remap control. When specified, overrides the internal 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	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

Input 1 POP – Curve Geometry

OUTPUTS

Output 0 POP – POPX_out1