/// \defgroup PkgApolloniusGraph2Ref 2D Apollonius Graphs (Delaunay Graphs of Disks) Reference
/// \defgroup PkgApolloniusGraph2Concepts Concepts
/// \ingroup PkgApolloniusGraph2Ref
/*!
\addtogroup PkgApolloniusGraph2Ref
\todo check generated documentation
\cgalPkgDescriptionBegin{2D Apollonius Graphs (Delaunay Graphs of Disks),PkgApolloniusGraph2}
\cgalPkgPicture{CircleVoronoi.png}
\cgalPkgSummaryBegin
\cgalPkgAuthors{Menelaos Karavelas and Mariette Yvinec}
\cgalPkgDesc{Algorithms for computing the Apollonius graph in two dimensions. The Apollonius graph is the dual of the Apollonius diagram, also known as the <I>additively weighted Voronoi diagram</I>. The latter can be thought of as the Voronoi diagram of a set of disks under the Euclidean metric, and it is a generalization of the standard Voronoi diagram for points. The algorithms provided are dynamic.}
\cgalPkgManuals{Chapter_2D_Apollonius_Graphs,PkgApolloniusGraph2Ref}
\cgalPkgSummaryEnd
\cgalPkgShortInfoBegin
\cgalPkgSince{3.0}
\cgalPkgDependsOn{\ref PkgTDS2}
\cgalPkgBib{cgal:ky-ag2}
\cgalPkgLicense{\ref licensesGPL  "GPL"}
\cgalPkgDemo{2D Apollonius Graph,apollonius_graph_2.zip}
\cgalPkgShortInfoEnd
\cgalPkgDescriptionEnd

An Apollonius graph is the dual of the Apollonius diagram, also known
as the <I>additively weighted Voronoi diagram</I>. It is essentially the
Voronoi diagram of a set of disks, where the distance of a
point of the plane from a disk is defined as the Euclidean
distance of the point and the center of the circle, minus the radius
of the disk.

\cgal provides the class `CGAL::Apollonius_graph_2<Gt,Agds>` for
computing the 2D Apollonius graph. The two template parameters must be
models of the `ApolloniusGraphTraits_2` and
`ApolloniusGraphDataStructure_2` concepts. The first concept is
related to the geometric objects and predicates associated with
Apollonius graphs, whereas the second concept refers to the data
structure used to represent the Apollonius graph. The classes
`Apollonius_graph_traits_2<K,Method_tag>` and
`Triangulation_data_structure_2<Vb,Fb>` are models of the
aforementioned concepts.

\cgalClassifedRefPages

\cgalCRPSection{Concepts}

- `ApolloniusSite_2`
- `ApolloniusGraphDataStructure_2`
- `ApolloniusGraphVertexBase_2`
- `ApolloniusGraphTraits_2`
- `ApolloniusGraphHierarchyVertexBase_2`

\cgalCRPSection{Classes}

- `CGAL::Apollonius_graph_2<Gt,Agds>`
- `CGAL::Apollonius_site_2<K>`
- `CGAL::Apollonius_graph_vertex_base_2<Gt,StoreHidden>`
- `CGAL::Apollonius_graph_traits_2<K,Method_tag>`
- `CGAL::Apollonius_graph_filtered_traits_2<CK,CM,EK,EM,FK,FM>`
- `CGAL::Apollonius_graph_hierarchy_2<Gt,Agds>`
- `CGAL::Apollonius_graph_hierarchy_vertex_base_2<Agvb>`


*/

