POPX

Object Falloff

v1.3.0
Falloffs

Summary

The Object Falloff creates falloff patterns based on the spatial relationship between points and arbitrary 3D geometry objects. This allows for complex, art-directable falloff patterns driven by modeled shapes rather than mathematical primitives.

Supports multiple area of influence modes including inside/outside detection, surface distance calculations, and surface intersection proximity. Objects can be transformed in 3D space with full control over translation, rotation, scaling, and pivot points, with configurable transform and rotation orders.

The resulting falloff values can be combined with existing falloff attributes, enhanced with procedural noise, remapped with custom curves, and previewed with color ramps.

Parameters

GroupGroup
If there are input groups, specifying a group name in this field will cause this POPX to act only upon the group specified.
Object GeometryObjectgeometry
Reference to the POP geometry to use as the falloff object.
Display ObjectDisplayobject
When enabled, renders the object geometry in the viewport for visual reference.
Display ColorDisplaycolor
Display color for the object geometry when Display Object is enabled.
Display ColorDisplaycolorrDisplay ColorDisplaycolorgDisplay ColorDisplaycolorb
Area of InfluenceAreaofinfluence
Determines how falloff values are calculated relative to the object geometry.
InsideinsideOutsideoutsideSurface DistancesurfacedistSurface Intersectionsurfaceintersect
ThresholdThreshold
Distance threshold for surface intersection detection.
Transform OrderXord
Order of scale, rotate, and translate transformations for object space.
Scale Rotate TranslatesrtScale Translate RotatestrRotate Scale TranslaterstRotate Translate ScalertsTranslate Scale RotatetsrTranslate Rotate Scaletrs
Rotate OrderRord
Rotation axis order for object space transformation.
Rx Ry RzxyzRx Rz RyxzyRy Rx RzyxzRy Rz RxyzxRz Rx RyzxyRz Ry Rxzyx
TranslateT
Translation offset for object space.
TranslateTxTranslateTyTranslateTz
RotateR
Rotation of object space in degrees.
RotateRxRotateRyRotateRz
ScaleS
Scale factor for object space per axis.
ScaleSxScaleSyScaleSz
PivotP
Pivot point for object space transformations.
PivotPxPivotPyPivotPz
Uniform ScaleScale
Uniform scaling factor applied to all axes equally.
Combine OperationCombineop
Mathematical operation used to combine this falloff with existing falloff values.
AddaddSubstractsubMultiplymultDividedivScreenscreenOverlayoverlayMaximummaxMinimumminSetset
Combine Falloff AttributeCombattrscope
Specifies which falloff attribute to combine with when Combine Operation is not set to Set.
Swap Operation OrderSwaporder
Reverses the order of operands in the combine operation (A op B becomes B op A).
Combine StrengthCombstrength
Blending factor for the combine operation, ranging from 0 (no effect) to 1 (full effect).
Output Falloff AttributeOutputfalloffattr
Name of the attribute where the final falloff values will be stored.
Preview FalloffPreviewfalloff
When enabled, visualizes falloff values using a color ramp.
Falloff RampFallofframp
Color ramp preset used for visualizing falloff values when Preview Falloff is enabled.
HeatmapheatmapBlackbodyblackbodyInfraredinfraredCustomcustom
Open Custom Ramp EditorOpencustumrampeditor
Opens the custom color ramp editor for defining a custom falloff visualization gradient.
Reset Custom RampResetcustomramp
Resets the custom color ramp to its default state.
Apply NoiseApplynoise
When enabled, adds procedural noise to the falloff values for organic variation.
Combine OperationCombineopnoise
How noise values are combined with the base falloff (Add or Multiply).
AddaddMultiplymult
TypeType
Noise algorithm type (Perlin, Simplex, etc.).
Perlin 2D (GPU)perlin2dPerlin 3D (GPU)perlin3dPerlin 4D (GPU)perlin4dSimplex 2D (GPU)simplex2dSimplex 3D (GPU)simplex3dSimplex 4D (GPU)simplex4d
SeedSeed
Numerical value that initializes the randomization.
PeriodPeriod
Period (scale) of the noise field.
HarmonicsHarmon
The number of higher frequency components to layer on top of the base frequency. 0 harmonics give the base shape.
Harmonic SpreadSpread
The factor by which the frequency of a harmonic increases relative to the previous harmonic.
Harmonic GainGain
Amplitude of the Harmonics layered on top of the base frequency.
AmplitudeAmp
The noise values amplitude (a scale on the values output).
ExponentExp
Sets the exponent. The internal value is raised by the power of the exponent.
OffsetOffset
Adds an offset to the resulting value.
Transform OrderXordnoise
Sets the overall transform order for the transformations.
Scale Rotate TranslatesrtScale Translate RotatestrRotate Scale TranslaterstRotate Translate ScalertsTranslate Scale RotatetsrTranslate Rotate Scaletrs
Rotate OrderRordnoise
Sets the order of the rotations within the overall transform order.
Rx Ry RzxyzRx Rz RyxzyRy Rx RzyxzRy Rz RxyzxRz Rx RyzxyRz Ry Rxzyx
TranslateTnoise
Translate the points through the noise space.
TranslateTnoisexTranslateTnoiseyTranslateTnoisez
RotateRnoise
Rotate the points around the corresponding X, Y and Z axes. Angles are given in degrees.
RotateRnoisexRotateRnoiseyRotateRnoisez
ScaleSnoise
These three fields scale the Source geometry in the three axes.
ScaleSnoisexScaleSnoiseyScaleSnoisez
PivotPnoise
The pivot point for the transform rotates and scales.
PivotPnoisexPivotPnoiseyPivotPnoisez
Translate 4DT4dnoise
Translates the points through the 4th noise dimension.
Enable RemapRemap
Enables remapping controls for adjusting falloff value range and distribution.
ClampClamp
When enabled, constrains falloff values to the 0-1 range.
FitFit
Enables remapping of falloff values from an input range to an output range.
Auto Input Min MaxAuto
Automatically determines input range from actual min/max falloff values.
Input MinInputmin
Minimum value of the input range for remapping.
Input MaxInputmax
Maximum value of the input range for remapping.
Output MinOutputmin
Minimum value of the output range for remapping.
Output MaxOutputmax
Maximum value of the output range for remapping.
InvertInvert
Reverses the falloff values (1 - value).
Enable Ramp RemapEnablerampremap
Applies a custom curve defined by a ramp to remap the falloff values.
Open Ramp EditorOpenrampeditor
Opens the ramp editor for defining the custom remapping curve.
Reset RampResetramp
Resets the remap ramp editor.
Custom Ramp TOPCustomramptop
Reference to an external TOP for remap control. When specified, overrides the internal ramp editor.
BypassBypass
Pass through the first input to the output unchanged.
Free Extra GPU MemoryFreeextragpumem
Free memory that has accumulated when output memory has grown and shrunk.
Render PrimitivesRenderprimitives
Toggles rendering of POPX Geometry or shows it as point instances only.
Convert to Point PrimitivesConverttoptprim
Converts points to primitive points when Render Primitives is toggled off.
SRT / RSTSrtrst
Sets the transform order when using POPX Geometry as built-in TouchDesigner instances.
Enable FeedbackEnablefeedback
Enables feedback mode for accumulative falloff effects over time.
Initialize FeedbackInitializefeedback
Resets the feedback buffer to its initial state.

Inputs

Input 0POP
POPX/POP Geometry
Input 1POP
Object Geometry

Outputs

Output 0POP
POPX_out1