CGAL 6.0.1 - 2D Conforming Triangulations and Meshes
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DelaunayMeshFaceBase_2 Concept Reference

Definition

The concept DelaunayMeshFaceBase_2 refines the concept TriangulationFaceBase_2. It adds two functions giving access to a Boolean marker, that indicates if the face is in the meshing domain or not.

Refines
ConstrainedTriangulationFaceBase_2
Has models
CGAL::Delaunay_mesh_face_base_2<Traits, Fb>

Typedef

typedef std::pair< DelaunayMeshFaceBase_2, int > Edge
 A typedef to describe an edge.
 

Functions

bool is_in_domain () const
 returns true if this face is in the domain to be refined.
 
void set_in_domain (const bool b)
 sets if this face is in the domain.
 
bool is_blind () const
 returns true if this face has its circumcenter hidden by a constrained edge.
 
void set_blind (const bool b)
 sets if this face is blind or not.
 
Edge blinding_constraint () const
 If this face is blind, this function returns the first constrained edge that prevents it from "seeing" its circumcenter.
 
void set_blinding_constraint (const Edge &e)
 sets the edge that makes this face blind.
 

Member Function Documentation

◆ blinding_constraint()

Edge DelaunayMeshFaceBase_2::blinding_constraint ( ) const

If this face is blind, this function returns the first constrained edge that prevents it from "seeing" its circumcenter.

Precondition
is_blind() returns true

◆ is_blind()

bool DelaunayMeshFaceBase_2::is_blind ( ) const

returns true if this face has its circumcenter hidden by a constrained edge.

It does not "see" it, following the Constrained Delaunay triangulation visibility criterion.

◆ set_blinding_constraint()

void DelaunayMeshFaceBase_2::set_blinding_constraint ( const Edge e)

sets the edge that makes this face blind.

Precondition
is_blind() returns true
e is a constrained edge