LineTes_halfedge Class Reference

Halfedge class used by the LineTes class. More...

#include <ttessel.h>

Inheritance diagram for LineTes_halfedge:

Public Member Functions
	LineTes_halfedge ()
	Basic constructor. More...
LineTes::Halfedge_handle	get_prev_hf ()
	Return previous halfedge along the segment.
LineTes::Halfedge_handle	get_next_hf ()
	Return next halfedge along the segment.
bool	get_dir ()
	Test halfedge direction against the segment direction. More...
double	get_length ()
	Return the halfedge length.
LineTes::Seg_handle	get_segment ()
	Return a handle of the segment containing the halfedge.
LineTes::Seg_handle	segment ()
	Return a handle of the segment containing the halfedge. More...
void	set_length ()
	Update the length attribute of a halfedge.
void	set_length (double l)
	Set the length attribute of an halfedge.
void	set_prev_hf (LineTes::Halfedge_handle)
	Set the previous halfedge along the segment.
void	set_next_hf (LineTes::Halfedge_handle)
	Set the next halfedge along the segment.
void	set_dir ()
	Update the direction attribute of a halfedge. More...
void	set_dir (bool d)
	Set the direction attribute of a halfedge. More...
void	set_segment (LineTes::Seg_handle s)
	Define the segment containing the halfedge.
bool	is_one_edge_segment ()
	Test whether a halfedge starting a segment is also ending the segment. More...

Detailed Description

Halfedge class used by the LineTes class.

The LineTes_halfedge class derives from the CGAL class Arr_halfedge_base. Several attributes related to segments have been added.

A segment represented by a LineTes::Seg object is identified by one of its halfedge. It is therefore oriented and its orientation is determined by the orientation of its identifying halfedge.

Constructor & Destructor Documentation

LineTes_halfedge::LineTes_halfedge

(

)

Basic constructor.

Invoke the parent constructor, set length to zero and next and previous halfedges along the segment as null halfedges.

Member Function Documentation

bool LineTes_halfedge::get_dir ( )

inline

Test halfedge direction against the segment direction.

Returns

true if the halfedge and the segment have the same direction, false if they are opposite.

bool LineTes_halfedge::is_one_edge_segment ( )

inline

Test whether a halfedge starting a segment is also ending the segment.

Precondition

the halfedge handle should not be null.

LineTes::Seg_handle LineTes_halfedge::segment ( )

inline

Return a handle of the segment containing the halfedge.

Note

Redondant method. Is it really used?

void LineTes_halfedge::set_dir

(

)

Update the direction attribute of a halfedge.

Precondition

The halfedge should have either a next or a previous halfedge on the segment.

The direction is inherited from the neighbour halfedges on the segment. Priority given to the next halfedge.

void LineTes_halfedge::set_dir

(

bool

d

)

Set the direction attribute of a halfedge.

The convention is to set the direction to true if the halfedge and the halfedge identifying the segment have the same direction.

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

• /home/kien/labo/lite/include/ttessel.h
• /home/kien/labo/lite/lib/ttessel.cpp