UE::Geometry::FPriorityOrderPoints Struct Reference

#include <PriorityOrderPoints.h>

Public Member Functions
	FPriorityOrderPoints (int32 SpatialLevels=10)
GEOMETRYCORE_API void	ComputeUniformSpaced (TArrayView< const FVector3d > Points, TArrayView< const float > ImportanceWeights, int32 EarlyStop=-1, int32 OffsetResFactor=4)
GEOMETRYCORE_API void	ComputeUniformSpaced (TArrayView< const FVector3f > Points, TArrayView< const float > ImportanceWeights, int32 EarlyStop=-1, int32 OffsetResFactor=4)
GEOMETRYCORE_API void	ComputeUniformSpaced (TArrayView< const FVector3d > Points, TArrayView< const float > ImportanceWeights, TArrayView< const float > SecondImportanceWeights, int32 EarlyStop=-1, int32 OffsetResFactor=4)
GEOMETRYCORE_API void	ComputeUniformSpaced (TArrayView< const FVector3f > Points, TArrayView< const float > ImportanceWeights, TArrayView< const float > SecondImportanceWeights, int32 EarlyStop=-1, int32 OffsetResFactor=4)
GEOMETRYCORE_API void	ComputeDescendingImportance (TArrayView< const float > ImportanceWeights)

Public Attributes
int32	SpatialLevels = 10
	Inputs.
TArray< int32 >	Order
	Outputs.

Detailed Description

Generate a "priority ordering" for a point set

Either order by descending ImportanceWeight, or try to additionally un-clump the points – such that if we only look at the first N points, they will cover the overall space as well as possible while still favoring higher ImportanceWeight points in each local region.

Constructor & Destructor Documentation

FPriorityOrderPoints()

UE::Geometry::FPriorityOrderPoints::FPriorityOrderPoints ( int32  SpatialLevels = 10 )

inline

Member Function Documentation

ComputeDescendingImportance()

void FPriorityOrderPoints::ComputeDescendingImportance

(

TArrayView< const float >

ImportanceWeights

)

Compute an ordering that only sorts by descending ImportanceWeights, and does not attempt to spatially distribute the points

Parameters

ImportanceWeights

Points with a higher ImportanceWeight will appear earlier in the ordering

ComputeUniformSpaced() [1/4]

void FPriorityOrderPoints::ComputeUniformSpaced	(	TArrayView< const FVector3d >	Points,
		TArrayView< const float >	ImportanceWeights,
		int32	EarlyStop = -1,
		int32	OffsetResFactor = 4
	)

Compute an ordering for the input points that attempts to keep points 'well spaced' / un-clumped

Parameters

Points	Points to re-order
ImportanceWeights	Points with a higher ImportanceWeight in their local region of space will appear earlier in the ordering
EarlyStop	If >= 0, stop re-ordering once we've sorted this many points; beyond this the ordering will be arbitrary
OffsetResFactor	Factor that controls how closely the points are allowed to space, with higher values -> more clumping allowed

ComputeUniformSpaced() [2/4]

void FPriorityOrderPoints::ComputeUniformSpaced	(	TArrayView< const FVector3d >	Points,
		TArrayView< const float >	ImportanceWeights,
		TArrayView< const float >	SecondImportanceWeights,
		int32	EarlyStop = -1,
		int32	OffsetResFactor = 4
	)

Compute an ordering for the input points that attempts to keep points 'well spaced' / un-clumped

Parameters

Points	Points to re-order
ImportanceWeights	Points with a higher ImportanceWeight in their local region of space will appear earlier in the ordering
SecondImportanceWeights	A second set of importance weights; we may pick an additional point from each local region to also sample points by this metric
EarlyStop	If >= 0, stop re-ordering once we've sorted this many points; beyond this the ordering will be arbitrary
OffsetResFactor	Factor that controls how closely the points are allowed to space, with higher values -> more clumping allowed

ComputeUniformSpaced() [3/4]

void FPriorityOrderPoints::ComputeUniformSpaced	(	TArrayView< const FVector3f >	Points,
		TArrayView< const float >	ImportanceWeights,
		int32	EarlyStop = -1,
		int32	OffsetResFactor = 4
	)

ComputeUniformSpaced() [4/4]

void FPriorityOrderPoints::ComputeUniformSpaced	(	TArrayView< const FVector3f >	Points,
		TArrayView< const float >	ImportanceWeights,
		TArrayView< const float >	SecondImportanceWeights,
		int32	EarlyStop = -1,
		int32	OffsetResFactor = 4
	)

Member Data Documentation

Order

TArray<int32> UE::Geometry::FPriorityOrderPoints::Order

Outputs.

SpatialLevels

int32 UE::Geometry::FPriorityOrderPoints::SpatialLevels = 10

Inputs.

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

• Engine/Source/Runtime/GeometryCore/Public/Spatial/PriorityOrderPoints.h
• Engine/Source/Runtime/GeometryCore/Private/Spatial/PriorityOrderPoints.cpp