Measure

Summary

The Measure operator computes geometric properties on geometry including density, surface variation, mean curvature, curvedness, and gradient values. Results are output as point attributes for use in downstream operations.

Parameters

Page: Measure

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.
Measure Measure – – The type of geometric measurement to compute.
Density density
Surface Variation surfacevar
Mean Curvature meancurv
Curvedness curvedness
Gradient gradient
Scalar Attribute Scalarattr – The scalar attribute to compute gradient from when Measure is set to Gradient.
Use Existing Neighbors Attributes Usenebrsattr – When enabled, uses pre-computed neighbor attributes instead of computing them.
Neighbors Type Nebrtype – – Method for finding neighboring points.
By Distance distance
Connected connected
Max Neighbors Distance Maxdistance – Maximum distance to search for neighboring points.
Distribution Distribution – – Method for distributing neighbor point selection.
Default default
Unique unique
Closest closest
Num Hash Buckets Numhashbuckets – Number of hash buckets for spatial acceleration structure.
Max Neighbors Maxneighbors – Maximum number of neighbors to consider for each point.
Smoothing Radius Smoothingradius – Radius used for smoothing the measured values.
Output Measure Attribute Outputmeasureattr – Name of the output attribute to store the measured values.
Output Neighbors Attributes Outputneighborsattrs – When enabled, outputs neighbor attributes for reuse by subsequent Measure operators.

Page: Preview Measure

Preview Measure Previewmeasure – When enabled, visualizes the measured values using a color ramp.
Measure Ramp Measureramp – – Color ramp preset used for visualizing measured values when Preview Measure is enabled.
Heatmap heatmap
Blackbody blackbody
Infrared infrared
Custom custom
Open Custom Ramp Opencustumramp – Opens the custom color ramp editor for defining a custom measure visualization.
Reset Custom Ramp Resetcustomramp – Resets the custom color ramp to its default state.

Page: Common

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.
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