> falloffs

Curve Falloff

falloffs/curve-falloff·v1.5.1

IN:2 OUT:1

SUMMARY

Curve Falloff resamples a curve from Input 1 or the Curve Geometry parameter, placed by its own transform, and finds the exact closest point on the curve for every point. Mode picks the falloff: Distance to Curve (normalized and clamped between Min and Max Distance), Curve Position (0 to 1 along the curve) or Distance Times Curve Position.

Max Candidates and Search Radius bound the closest-point search, and Resample Method sets the curve density by divisions or by the distance between points. Like every POPX falloff, it adds optional noise, 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

PAGECurve

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.
Curve Geometry	Curvegeometry	Reference to a Curve POP to measure from when Input 1 is empty.
Display Curve	Displaycurve	Enable drawing the curve guide.
[+]Display Color	Displaycolor	Sets the color of the curve guide.
[+]Mode	Mode	Determines how the falloff is computed from the curve.
Min Distance	Mindistance	Sets the lowest normalized distance to the curve. Closer points are clamped to this value. Not used in Curve Position mode.
Max Distance	Maxdistance	Sets the highest normalized distance to the curve. Farther points are clamped to this value.
Max Candidates	Maxcandidates	Number of closest curve vertices tested per point.
[+]Resample Method	Resamplemethod	Determines how the line strips are resampled: None, Divisions per Line Strip or Distance between Points.
Search Radius	Searchradius	Search radius around the curve. Points further away get this distance.
Divisions	Resampledivs	The number of divisions per line strip.
Max Distance	Resamplemaxdist	Sets the maximum distance between points when resampling by Distance between Points.
Maximum Number of Vertices	Maxverts	Number of vertices allocated per line strip.
Max Tries for Binary Search	Maxtries	Max number of iterations for binary search when linearly resampling.
[+]Transform Order	Xord	Sets the transform order of the curve.
[+]Rotate Order	Rord	Sets the order of the rotations of the curve.
[+]Translate	T	Translate the curve in the three axes.
[+]Rotate	R	Rotate the curve around the X, Y and Z axes. Angles are given in degrees.
[+]Scale	S	Scale factor for each axis of the curve.
[+]Pivot	P	The pivot point for the rotate and scale of the curve.
Uniform Scale	Scale	Specifies a uniform scale factor for the curve.

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.

PAGENoise

Apply Noise	Applynoise	Enable adding noise to the falloff.
[+]Combine Operation	Combineopnoise	Specify how to combine the noise with the falloff, either Add or Multiply.
[+]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.
[+]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.
Translate 4D	T4dnoise	Translates the points through the 4th noise dimension.

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

Input 1 POP - Curve Geometry

OUTPUTS

Output 0 POP - POPX/POP Geometry