HalfedgeDSFace Concept Reference

Definition

The concept HalfedgeDSFace defines the requirements for the local Face type in the HalfedgeDS concept. It is also required in the Face_wrapper<Refs,Traits> member class template of an items class, see the HalfedgeDSItems concept.

A face optionally stores a reference to an incident halfedge that points to the face. A type tag indicates whether the related member functions are supported. Figure figureHalfedgeDSOptionalMethods depicts the relationship between a halfedge and its incident halfedges, vertices, and faces.

For the protection of the integrity of the data structure classes such as CGAL::Polyhedron_3 are allowed to redefine the modifying member functions to be private. In order to make them accessible for the halfedge data structure they must be derived from a base class Base where the modifying member functions are still public. (The protection can be bypassed by the user, but not by accident.)

Refines:

CopyConstructible

DefaultConstructible

Has Models:

CGAL::HalfedgeDS_face_base<Refs>

CGAL::HalfedgeDS_face_min_base<Refs>

See also

HalfedgeDS<Traits,Items,Alloc>

HalfedgeDSItems

HalfedgeDSVertex

HalfedgeDSHalfedge

Types
typedef unspecified_type	HalfedgeDS
	instantiated HalfedgeDS ( \( \equiv\) Refs). More...
typedef unspecified_type	Base
	base class that allows modifications. More...
typedef unspecified_type	Vertex
	model of HalfedgeDSVertex. More...
typedef unspecified_type	Halfedge
	model of HalfedgeDSHalfedge. More...
typedef unspecified_type	Vertex_handle
	handle to vertex. More...
typedef unspecified_type	Halfedge_handle
	handle to halfedge. More...
typedef unspecified_type	Face_handle
	handle to face. More...
typedef unspecified_type	Vertex_const_handle
typedef unspecified_type	Halfedge_const_handle
typedef unspecified_type	Face_const_handle
typedef unspecified_type	Supports_face_halfedge
	CGAL::Tag_true or CGAL::Tag_false. More...

Creation
	Face ()
	default constructor. More...

Operations available if Supports_face_halfedge == CGAL::Tag_true
Halfedge_handle	halfedge ()
Halfedge_const_handle	halfedge () const
	incident halfedge that points to the face. More...
void	set_halfedge (Halfedge_handle h)
	sets incident halfedge to h. More...

Member Typedef Documentation

typedef unspecified_type HalfedgeDSFace::Base

base class that allows modifications.

typedef unspecified_type HalfedgeDSFace::Face_const_handle

typedef unspecified_type HalfedgeDSFace::Face_handle

handle to face.

typedef unspecified_type HalfedgeDSFace::Halfedge

model of HalfedgeDSHalfedge.

typedef unspecified_type HalfedgeDSFace::Halfedge_const_handle

typedef unspecified_type HalfedgeDSFace::Halfedge_handle

handle to halfedge.

typedef unspecified_type HalfedgeDSFace::HalfedgeDS

instantiated HalfedgeDS ( \( \equiv\) Refs).

typedef unspecified_type HalfedgeDSFace::Supports_face_halfedge

CGAL::Tag_true or CGAL::Tag_false.

typedef unspecified_type HalfedgeDSFace::Vertex

model of HalfedgeDSVertex.

typedef unspecified_type HalfedgeDSFace::Vertex_const_handle

typedef unspecified_type HalfedgeDSFace::Vertex_handle

handle to vertex.

Member Function Documentation

HalfedgeDSFace::Face

(

)

default constructor.

Halfedge_handle HalfedgeDSFace::halfedge

(

)

Halfedge_const_handle HalfedgeDSFace::halfedge

(

)

const

incident halfedge that points to the face.

void HalfedgeDSFace::set_halfedge

(

Halfedge_handle

h

)

sets incident halfedge to h.