CGAL 5.3  2D Voronoi Diagram Adaptor

The concept AdaptationPolicy_2
defines the requirements on the predicate functors that determine whether a feature of the triangulated Delaunay graph should be rejected or not. It also provides a functor for inserting sites in the Delaunay graph. The last functor is optional and a tag determines whether it is provided or not. Note that while the first two functors do not modify the Delaunay graph they take as an argument, the last ones does.
CGAL::Identity_policy_2<DG,AT>
CGAL::Apollonius_graph_degeneracy_removal_policy_2<AG2>
CGAL::Apollonius_graph_caching_degeneracy_removal_policy_2<AG2>
CGAL::Delaunay_triangulation_degeneracy_removal_policy_2<DT2>
CGAL::Delaunay_triangulation_caching_degeneracy_removal_policy_2<DT2>
CGAL::Regular_triangulation_degeneracy_removal_policy_2<RT2>
CGAL::Regular_triangulation_caching_degeneracy_removal_policy_2<RT2>
CGAL::Segment_Delaunay_graph_degeneracy_removal_policy_2<SDG2>
CGAL::Segment_Delaunay_graph_caching_degeneracy_removal_policy_2<SDG2>
DelaunayGraph_2
AdaptationTraits_2
CGAL::Voronoi_diagram_2<DG,AT,AP>
Types  
typedef unspecified_type  Site_2 
A type for the sites of the Voronoi diagram.  
typedef unspecified_type  Delaunay_graph 
A type for the triangulated Delaunay graph. More...  
typedef Delaunay_graph::Vertex_handle  Delaunay_vertex_handle 
typedef Delaunay_graph::Face_handle  Delaunay_face_handle 
typedef Delaunay_graph::Edge  Delaunay_edge 
typedef Delaunay_graph::All_edges_iterator  All_Delaunay_edges_iterator 
typedef Delaunay_graph::Finite_edges_iterator  Finite_Delaunay_edges_iterator 
typedef Delaunay_graph::Edge_circulator  Delaunay_edge_circulator 
typedef unspecified_type  Edge_rejector 
A type for the predicate functor that is responsible for rejecting an edge of the Delaunay graph (or equivalently rejecting its dual edge in the Voronoi diagram). More...  
typedef unspecified_type  Face_rejector 
A type for the predicate functor that is responsible for rejecting a vertex of the Delaunay graph (or equivalently its dual face in the Voronoi diagram  hence the name of the functor). More...  
typedef unspecified_type  Has_inserter 
A tag for determining if the adaptation policy class provides a functor for inserting sites in the Delaunay graph. More...  
typedef unspecified_type  Site_inserter 
A type for a functor that inserts sites in the Delaunay graph. More...  
Access to objects  
Edge_rejector  edge_rejector_object () 
Face_rejector  face_rejector_object () 
Site_inserter  site_inserter_object () 
This method is required only if Has_inserter is equal to CGAL::Tag_true .  
Miscellaneous  
The following methods are important when the adaptation policy maintains a state. This can happen if we have a caching adaptation policy, i.e., when we cache the results of the edge and face rejectors.  
void  clear () 
Clears the state of the adaptation policy.  
void  swap (AdaptationPolicy_2 other) 
The adaptation policies ap and other are swapped. More...  
bool  is_valid () 
Tests the validity of the adaptation policy.  
bool  is_valid (Delaunay_graph dg) 
Tests the validity of the adaptation policy using extra information from the Delaunay graph dg .  
A type for the triangulated Delaunay graph.
The type Delaunay_graph
must be a model of the DelaunayGraph_2
concept.
A type for the predicate functor that is responsible for rejecting an edge of the Delaunay graph (or equivalently rejecting its dual edge in the Voronoi diagram).
It must be model of the concepts DefaultConstructible
, CopyConstructible
, Assignable
, and AdaptableFunctor
(with two arguments). It must provide the following operators:
bool operator()(Delaunay_graph dg, Delaunay_edge e)
bool operator()(Delaunay_graph dg, Delaunay_face_handle f, int i)
bool operator()(Delaunay_graph dg, Delaunay_edge_circulator ec)
bool operator()(Delaunay_graph dg,
All_Delaunay_edges_iterator eit)
bool operator()(Delaunay_graph dg,
Finite_Delaunay_edges_iterator eit)
The functor returns true
iff the edge is rejected.
A type for the predicate functor that is responsible for rejecting a vertex of the Delaunay graph (or equivalently its dual face in the Voronoi diagram  hence the name of the functor).
It must be model of the concepts DefaultConstructible
, CopyConstructible
, Assignable
, AdaptableFunctor
(with two arguments). It must provide the following operator:
bool operator()(Delaunay graph dg, Delaunay_vertex_handle v)
The functor returns true
iff the face is rejected.
A tag for determining if the adaptation policy class provides a functor for inserting sites in the Delaunay graph.
This tag is equal to either CGAL::Tag_true
(a site inserter functor is available) or CGAL::Tag_false
(a site inserter functor is not available).
A type for a functor that inserts sites in the Delaunay graph.
It must be model of the concepts DefaultConstructible
, CopyConstructible
, Assignable
, AdaptableFunctor
(with two arguments). It must provide the following operator
Delaunay_vertex_handle operator()(Delaunay_graph& dg, Site_2 t)
The vertex handle returned either points to the vertex of the Delaunay graph corresponding to the site just inserted or is the default constructed vertex handle. The latter case can happen if the site inserted is hidden, i.e., it has an empty Voronoi cell.
This type is required only if the Has_inserter
tag is equal to CGAL::Tag_true
.
void AdaptationPolicy_2::swap  (  AdaptationPolicy_2  other  ) 
The adaptation policies ap
and other
are swapped.
This method should be preferred to ap=other
or ap(other)
if other
is deleted afterwards.