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

#include <MeshSurfacePointSampling.h>

Public Member Functions
GEOMETRYCORE_API bool	Init (TConstArrayView< RealType > Weights, RealType SumOfValidWeights, bool bAllowInvalidWeights)
	TWeightedSamplingAliasTable ()=default
	TWeightedSamplingAliasTable (TConstArrayView< RealType > Weights, RealType SumOfValidWeights, bool bAllowInvalidWeights)
	TWeightedSamplingAliasTable (TConstArrayView< RealType > Weights)
int32	Num () const
bool	IsValid () const
int32	Sample (RealType UniformRandom1, RealType UniformRandom2) const

Constructor & Destructor Documentation

TWeightedSamplingAliasTable() [1/3]

template<typename RealType >

UE::Geometry::TWeightedSamplingAliasTable< RealType >::TWeightedSamplingAliasTable ( )

default

TWeightedSamplingAliasTable() [2/3]

template<typename RealType >

UE::Geometry::TWeightedSamplingAliasTable< RealType >::TWeightedSamplingAliasTable ( TConstArrayView< RealType >  Weights, RealType  SumOfValidWeights, bool  bAllowInvalidWeights  )

inline

TWeightedSamplingAliasTable() [3/3]

template<typename RealType >

UE::Geometry::TWeightedSamplingAliasTable< RealType >::TWeightedSamplingAliasTable ( TConstArrayView< RealType >  Weights )

inline

Member Function Documentation

Init()

template<class RealType >

bool TWeightedSamplingAliasTable::Init	(	TConstArrayView< RealType >	Weights,
		RealType	SumOfValidWeights,
		bool	bAllowInvalidWeights
	)

Initialize sampling table

Parameters

Weights	The relative frequency that the element should be sampled – e.g., for uniform mesh sampling, these may be triangle areas.
SumOfValidWeights	Sum of all valid weights. Must not include negative (invalid) weights.
bAllowInvalidWeights	If true, then negative weights can be used to indicate invalid IDs, which must never be sampled. Otherwise, all weights should be non-negative.

Returns

true if successfully created a valid sampling table, false otherwise (e.g., if there were no valid weights)

IsValid()

template<typename RealType >

bool UE::Geometry::TWeightedSamplingAliasTable< RealType >::IsValid ( ) const

inline

Num()

template<typename RealType >

int32 UE::Geometry::TWeightedSamplingAliasTable< RealType >::Num ( ) const

inline

Sample()

template<typename RealType >

int32 UE::Geometry::TWeightedSamplingAliasTable< RealType >::Sample ( RealType  UniformRandom1, RealType  UniformRandom2  ) const

inline

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

• Engine/Source/Runtime/GeometryCore/Public/Sampling/MeshSurfacePointSampling.h
• Engine/Source/Runtime/GeometryCore/Private/Sampling/MeshSurfacePointSampling.cpp