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> Unreal Engine API Reference > Plugins > GeometricObjects > Spatial > TFastWindingTree > FastWindingNumber > TFastWindingTree::FastWindingNumber

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TFastWindingTree::FastWindingNumber

Fast approximation of winding number using far-field approximations.

Windows

MacOS

Linux

References

Module	GeometricObjects
Header	/Engine/Plugins/Experimental/GeometryProcessing/Source/GeometricObjects/Public/Spatial/FastWinding.h
Include	#include "Spatial/FastWinding.h"

Syntax

double FastWindingNumber
(
const FVector3d & P
)

Remarks

Fast approximation of winding number using far-field approximations. On a closed mesh the winding number will be 1 or more inside (depending on number of "winds"). Outside a closed mesh the winding number will be zero. On an open mesh, the above holds near the mesh but in the "hole" areas the value will smoothly blend from 1 to 0 over a band of width dependent on the hole extent

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