UE::Geometry::TNormalHistogram< RealType > Class Template Reference

#include <NormalHistogram.h>

Public Member Functions
	TNormalHistogram (int32 NumBins)
void	Count (const TVector< RealType > &Normal, RealType Weight=1)
TVector< RealType >	FindMaxNormal () const
RealType	WeightedSpreadMetric () const

Public Attributes
int32	Bins
TSphericalFibonacci< RealType >	BinPoints
TArray< RealType >	WeightedCounts

Detailed Description

template<typename RealType>
class UE::Geometry::TNormalHistogram< RealType >

TNormalHistogram calculates/represents a histogram on a 3D sphere. The histogram bins are defined by a Spherical Fibonacci distribution, ie each bin is the voronoi cell of the Fibonacci point. This point set can be calculated for any N.

One current limitation of this implementation is that the unit +/- X/Y/Z axes are not bin center points.

Constructor & Destructor Documentation

TNormalHistogram()

template<typename RealType >

UE::Geometry::TNormalHistogram< RealType >::TNormalHistogram ( int32  NumBins )

inline

Initialize a normal histogram with the given number of bins

Member Function Documentation

Count()

template<typename RealType >

void UE::Geometry::TNormalHistogram< RealType >::Count ( const TVector< RealType > &  Normal, RealType  Weight = 1  )

inline

Count a Normal in the histogram, ie find the Bin it should be included in and add the Weight to that Bin (The Normal does not strictly need to be normalized)

Parameters

Weight

optional weight for this normal

FindMaxNormal()

template<typename RealType >

TVector< RealType > UE::Geometry::TNormalHistogram< RealType >::FindMaxNormal ( ) const

inline

Returns

the normal direction for the Histogram bin that contains the most points / largest mass

WeightedSpreadMetric()

template<typename RealType >

RealType UE::Geometry::TNormalHistogram< RealType >::WeightedSpreadMetric ( ) const

inline

Attempt to compute a measure of the range of variation in normals across the occupied bins

Member Data Documentation

BinPoints

template<typename RealType >

TSphericalFibonacci<RealType> UE::Geometry::TNormalHistogram< RealType >::BinPoints

Bins

template<typename RealType >

int32 UE::Geometry::TNormalHistogram< RealType >::Bins

WeightedCounts

template<typename RealType >

TArray<RealType> UE::Geometry::TNormalHistogram< RealType >::WeightedCounts

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The documentation for this class was generated from the following file:

• Engine/Source/Runtime/GeometryCore/Public/Sampling/NormalHistogram.h