CGAL 6.0 - 2D Regularized Boolean Set-Operations
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GeneralPolygonSetDcelFace Concept Reference

Definition

A face record in a Dcel data structure used by the General_polygon_set_2 and Polygon_set_2 template classes to represent the underlying internal Arrangement_2 data structure.

Refines
ArrangementDcelFace
Has models
CGAL::Gps_face_base
See also
ArrangementDcel
ArrangementDcelVertex
GeneralPolygonSetDcelHalfedge

Access Functions

bool contained () const
 returns true if the face is contained in the general-polygon set, and false otherwise.
 
bool visited ()
 returns true if the face has been visited, and false otherwise.
 
std::size_t id () const
 returns an id associated to the face using set_id(); If no call to set_id() was done or if reset_id() was called, the returned value is not specified and id_not_set() must return true.
 
bool id_not_set () const
 returns true if set_id() was not called or if reset_id() was called, amd false otherwise.
 

Modifiers

void set_contained (bool flag)
 marks the face as contained (if flag is true), or as a hole (if it is false).
 
void reset_id ()
 marks the face as visited (if flag is true), or as not visited (if it is false).
 
void set_id (std::size_t i)
 sets the id associated to the face.
 

Member Function Documentation

◆ reset_id()

void GeneralPolygonSetDcelFace::reset_id ( )

marks the face as visited (if flag is true), or as not visited (if it is false).

This is used internally by the some of the operations of the General_polygon_set_2 class that traverse the arrangement faces.

resets the id associated to the face.

◆ set_id()

void GeneralPolygonSetDcelFace::set_id ( std::size_t  i)

sets the id associated to the face.

i should be different from the largest possible value that std::size_t can store.

◆ visited()

bool GeneralPolygonSetDcelFace::visited ( )

returns true if the face has been visited, and false otherwise.

This is used internally by the some of the operations of the General_polygon_set_2 class that traverse the arrangement faces.