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> Unreal Engine API Reference > Plugins > GeometricObjects > Util > TPairExpandIterator

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TPairExpandIterator

Wrapper around existing integer iterator that returns either 0, 1, or 2 integers for each value that the original iterator returns.

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References

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

Syntax

template<typename InputIteratorT>
class TPairExpandIterator

Remarks

Wrapper around existing integer iterator that returns either 0, 1, or 2 integers for each value that the original iterator returns.

This is specifically used by FDynamicMesh3::VtxTrianglesItr, where for each edge around a vertex, between 0 and 2 triangles need to be returned.

This is done via the PairExpandFunctionT TFunction, which returns a FIndex2i for a given integer. This pair must be either (a,invalid), (a, b), or (invalid, invalid), where invalid is integer < 0

Variables

		Name	Description
	InputIteratorT	Cur
	FIndex2i	CurPair
	int	CurPairI
	int	CurValue
	InputIteratorT	End
	PairExpandFunct...	PairFunc

Constructors

	Name	Description
	TPairExpandIterator()
	TPairExpandIterator ( const InputIteratorT& CurItr, const InputIteratorT& EndItr, const PairExpandFunctionT& PairFun... )

Functions

		Name	Description
	void	goto_next()

Operators

		Name	Description
	bool	operator!= ( const TPairExpandIterator& Other )
	int	operator*()
	const TPairE...	operator++()
	bool	operator== ( const TPairExpandIterator& Other )

Typedefs

Name	Description
PairExpandFunctionT

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