gsHalfEdgeMesh< T >::Halfedge Class Reference

Detailed Description

template<class T>
class gismo::gsHalfEdgeMesh< T >::Halfedge

Class that maintains directed halfedges in any dimension.

Inner classes. Needs to be defined in sequence Halfedge, Chain, Boundary

The class Halfedge represents a halfedge in any dimension given by its origin and end point indices and its length. A halfedge can be constructed with desired origin and end point and length. Two halfedges can be compared by == and !=. There are getter function for origin, end and length. There are functions to test wheter a halfedge can be appended to another one before or afterwards and whether a halfedge is a twin of another.

Halfedges can be outputted like (origin–end: length).

Public Member Functions
size_t	getEnd () const
	Get end vertex index.
T	getLength () const
	Get length of halfedge.
size_t	getOrigin () const
	Get origin vertex index.
	Halfedge (const size_t origin=0, const size_t end=0, const T length=0)
	This constructor sets the origin- and * end-point indices as well as length to preferred values.
bool	isNext (const Halfedge &previousHalfedge) const
	Tells if halfedge can be added at beginning.
bool	isPrev (const Halfedge &nextHalfedge) const
	Tells if halfedge can be added at end.
bool	isTwin (const Halfedge &halfedge) const
	Tells if halfedge is twin.

Private Attributes
size_t	m_end
	index of end vertex
T	m_length
	length of halfedge
size_t	m_origin
	index of origin vertex

Constructor & Destructor Documentation

Halfedge()

template<class T >

Halfedge ( const size_t  origin = 0, const size_t  end = 0, const T  length = 0  )

inlineexplicit

This constructor sets the origin- and * end-point indices as well as length to preferred values.

Parameters

[in]	origin	index of origin vertex
[in]	end	index of end vertex
[in]	length	length of the halfedge

Member Function Documentation

getEnd()

template<class T >

size_t getEnd ( ) const

inline

Get end vertex index.

Returns

index of end vertex

getLength()

template<class T >

T getLength ( ) const

inline

Get length of halfedge.

Returns

length of halfedge

getOrigin()

template<class T >

size_t getOrigin ( ) const

inline

Get origin vertex index.

Returns

index of origin vertex

isNext()

template<class T >

bool isNext ( const Halfedge &  previousHalfedge ) const

inline

Tells if halfedge can be added at beginning.

Parameters

[in]

previousHalfedge

halfedge which we want to know about if can be added at beginning

Returns

TRUE if halfedge can be added at beginning and FALSE otherwise.

isPrev()

template<class T >

bool isPrev ( const Halfedge &  nextHalfedge ) const

inline

Tells if halfedge can be added at end.

Parameters

[in]

nextHalfedge

halfedge which we want to know about if can be added at end

Returns

TRUE if halfedge can be added at end and FALSE otherwise.

isTwin()

template<class T >

bool isTwin ( const Halfedge &  halfedge ) const

inline

Tells if halfedge is twin.

Parameters

[in]

halfedge

halfedge which we want to know about if it is a twin

Returns

TRUE if halfedge is a twin and FALSE otherwise.