CGAL 6.0.1 - 2D Triangulations
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Class and Concept List
Here is the list of all concepts and classes of this package. Classes are inside the namespace CGAL. Concepts are in the global namespace.
[detail level 123]
 NCGAL
 CConstrained_Delaunay_triangulation_2A constrained Delaunay triangulation is a triangulation with constrained edges which tries to be as much Delaunay as possible
 CConstrained_triangulation_2A constrained triangulation is a triangulation of a set of points which has to include among its edges a given set of polylines joining the points
 CConstrained_triangulation_face_base_2The class Constrained_triangulation_face_base_2 is the default model for the concept ConstrainedTriangulationFaceBase_2 to be used as base face class of constrained triangulations
 CConstrained_triangulation_plus_2The class Constrained_triangulation_plus_2<Tr> provides a constrained triangulation with an additional data structure that keeps track of the input constraints and of their refinement in the triangulation
 CContextA context enables the access to the vertices of a constraint that pass through a subconstraint
 CDelaunay_triangulation_2The class Delaunay_triangulation_2 is designed to represent the Delaunay triangulation of a set of points in a plane
 CExact_intersections_tagIntersection tag for constrained triangulations, if exact predicates and exact constructions are provided
 CExact_predicates_tagIntersection tag for constrained triangulations, if the geometric traits provides exact predicates but approximate constructions
 CNo_constraint_intersection_requiring_constructions_tagIntersection tag for constrained triangulations, when input constraints are not allowed to intersect except if the intersection does not require any new point construction
 CNo_constraint_intersection_tagIntersection tag for constrained triangulations, when input constraints are not allowed to intersect except at a single common extremity
 CNo_intersection_tagIntersection tag for constrained triangulations, when input constraints do not intersect
 CRegular_triangulation_2The class Regular_triangulation_2 is designed to maintain the regular triangulation of a set of weighted points
 CRegular_triangulation_face_base_2The class Regular_triangulation_face_base_2 is a model of the concept RegularTriangulationFaceBase_2
 CRegular_triangulation_vertex_base_2The class Regular_triangulation_vertex_base_2 is a model of the concept RegularTriangulationVertexBase_2
 CTriangulation_2The class Triangulation_2 is the basic class designed to handle triangulations of set of points \( { A}\) in the plane
 CTriangulation_cw_ccw_2The class Triangulation_cw_ccw_2 offers two functions int cw(int i) and int ccw(int i) which, given the index of a vertex in a face, compute the index of the next vertex of the same face in clockwise or counterclockwise order
 CTriangulation_face_base_2The class Triangulation_face_base_2 is a model for the concept TriangulationFaceBase_2
 CTriangulation_face_base_with_info_2The class Triangulation_face_base_with_info_2 is a model of the concept TriangulationFaceBase_2 to be plugged into the triangulation data structure of a triangulation class
 CTriangulation_hierarchy_2The class Triangulation_hierarchy_2 implements a triangulation augmented with a data structure which allows fast point location queries
 CTriangulation_hierarchy_vertex_base_2The class Triangulation_hierarchy_vertex_base_2 is designed to be used as a vertex base class of a triangulation plugged into a Triangulation_hierarchy_2<Tr>
 CTriangulation_vertex_base_2The class Triangulation_vertex_base_2 is the default model for the concept TriangulationVertexBase_2
 CTriangulation_vertex_base_with_info_2The class Triangulation_vertex_base_with_info_2 is designed to be used as a base vertex class of a triangulation
 CConstrainedDelaunayTriangulationTraits_2The concept ConstrainedDelaunayTriangulationTraits_2 defines the requirements for the geometric traits class of a constrained Delaunay triangulation that supports intersections of input constraints. This is the case when the template parameter Itag of CGAL::Constrained_Delaunay_triangulation_2<Traits,Tds,Itag> is instantiated by one of the tag classes CGAL::Exact_intersections_tag or CGAL::Exact_predicates_tag. The concept ConstrainedDelaunayTriangulationTraits_2 refines both the concept DelaunayTriangulationTraits_2 and the concept ConstrainedTriangulationTraits_2
 CConstrainedTriangulationFaceBase_2In a constrained triangulation, the information about constrained edges is stored in the faces of the triangulation. The base face of a constrained triangulation has to be a model of the concept ConstrainedTriangulationFaceBase_2 which refines the concept TriangulationFaceBase_2 providing functionalities to deal with constraints
 CConstrainedTriangulationTraits_2The concept ConstrainedTriangulationTraits_2 defines the requirements for the geometric traits class of a constrained triangulation ( CGAL::Constrained_triangulation_2<Traits,Tds,Itag>) that supports intersections of input constraints (i. e. when the template parameter Itag is instantiated by one of the tag classes CGAL::Exact_intersections_tag or CGAL::Exact_predicates_tag). This concept refines the concept TriangulationTraits_2, adding requirements for function objects to compute the intersection points of two constraints. When CGAL::Exact_predicates_tag is used, the traits class is also required to provide additional types to compute the squared distance between a point and a line
 CDelaunayTriangulationTraits_2In addition to the requirements of the concept TriangulationTraits_2 the concept DelaunayTriangulationTraits_2 requires a predicate to check the empty circle property. The corresponding predicate type is called type Side_of_oriented_circle_2
 CRegularTriangulationFaceBase_2The regular triangulation of a set of weighted points does not necessarily have one vertex for each of the input points. Some of the input weighted points have no cell in the dual power diagrams and therefore do not correspond to a vertex of the regular triangulation. Those weighted points are said to be hidden points. A point which is hidden at a given time may appear later as a vertex of the regular triangulation upon removal on some other weighted point. Therefore, hidden points have to be stored somewhere. The regular triangulation store those hidden points in special vertices called hidden vertices
 CRegularTriangulationTraits_2The concept RegularTriangulationTraits_2 describes the requirements for the traits class of regular triangulations. It refines the concept TriangulationTraits_2 requiring the type CGAL::Weighted_point_2 and the power test predicate on those weighted points. A weighted point is basically a point augmented with a scalar weight. It can be seen as a circle when the weight is interpreted as a square radius. The power test on weighted points is the fundamental test to build regular triangulations as the side_of_oriented_circle test is the fundamental test of Delaunay triangulations
 CRegularTriangulationVertexBase_2The regular triangulation of a set of weighted points does not necessarily have one vertex for each of the input points. Some of the input weighted points have no cell in the dual power diagrams and therefore do not correspond to a vertex of the regular triangulation. Those weighted point are said to be hidden points. A point which is hidden at a given time may appear later as a vertex of the regular triangulation upon removal on some other weighted point. Therefore, hidden points have to be stored somewhere. The regular triangulation store those hidden points in special vertices called hidden vertices
 CTriangulationFaceBase_2The concept TriangulationFaceBase_2 describes the requirements for the base face class of a triangulation data structure that is itself plugged into a basic triangulation or a Delaunay triangulation
 CTriangulationHierarchyVertexBase_2The vertex of a triangulation included in a triangulation hierarchy has to provide some pointers to the corresponding vertices in the triangulations of the next and preceding levels. Therefore, the concept TriangulationHierarchyVertexBase_2 refines the concept TriangulationVertexBase_2, adding handles to the corresponding vertices in the next and previous level triangulations
 CTriangulationTraits_2
 CTriangulationVertexBase_2The concept TriangulationVertexBase_2 describes the requirements for the vertex base class of a triangulation data structure to be plugged in a basic, Delaunay or constrained triangulations
 CTriangulationVertexBaseWithInfo_2A type model of this concept can be used as vertex base by a triangulation and provides an additional information storage