mirror of https://github.com/CGAL/cgal
added Hyperbolic_triangulation_face_base_2 instead of using Triangulation_face_base_2<Hyperbolic_info>
This allows users to easily benefit from rebind (and it makes the code easier to read)
This commit is contained in:
Monique Teillaud
Iordan Iordanov
parent
86f6f2cff2
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40d99e3978
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// Copyright (c) 2016 INRIA Nancy (France).
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// All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org); you may redistribute it under
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// the terms of the Q Public License version 1.0.
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// See the file LICENSE.QPL distributed with CGAL.
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//
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// Licensees holding a valid commercial license may use this file in
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// accordance with the commercial license agreement provided with the software.
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//
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// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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//
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// $URL:
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// $Id:
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//
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//
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// Author(s) : Monique Teillaud <Monique.Teillaud@inria.fr>
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#ifndef CGAL_HYPERBOLIC_TRIANGULATION_FACE_BASE_2_H
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#define CGAL_HYPERBOLIC_TRIANGULATION_FACE_BASE_2_H
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#include <CGAL/basic.h>
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#include <CGAL/triangulation_assertions.h>
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#include <CGAL/Triangulation_ds_face_base_2.h>
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namespace CGAL {
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template < typename Gt, typename Fb = Triangulation_ds_face_base_2<> >
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class Hyperbolic_triangulation_face_base_2
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: public Fb
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{
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public:
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typedef Gt Geom_traits;
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typedef typename Fb::Vertex_handle Vertex_handle;
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typedef typename Fb::Face_handle Face_handle;
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template < typename TDS2 >
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struct Rebind_TDS {
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typedef typename Fb::template Rebind_TDS<TDS2>::Other Fb2;
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typedef Hyperbolic_triangulation_face_base_2<Gt, Fb2> Other;
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};
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public:
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Hyperbolic_triangulation_face_base_2()
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: Fb(), _is_finite_non_hyperbolic(false), _non_hyperbolic_edge(UCHAR_MAX)
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{}
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Hyperbolic_triangulation_face_base_2(Vertex_handle v0,
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Vertex_handle v1,
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Vertex_handle v2)
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: Fb(v0,v1,v2), _is_finite_non_hyperbolic(false), _non_hyperbolic_edge(UCHAR_MAX)
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{}
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Hyperbolic_triangulation_face_base_2(Vertex_handle v0,
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Vertex_handle v1,
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Vertex_handle v2,
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Face_handle n0,
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Face_handle n1,
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Face_handle n2)
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: Fb(v0,v1,v2,n0,n1,n2), _is_finite_non_hyperbolic(false), _non_hyperbolic_edge(UCHAR_MAX)
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{}
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static int ccw(int i) {return Triangulation_cw_ccw_2::ccw(i);}
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static int cw(int i) {return Triangulation_cw_ccw_2::cw(i);}
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bool is_finite_non_hyperbolic() const
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{
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return _is_finite_non_hyperbolic;
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}
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void set_finite_non_hyperbolic(bool is_finite_non_hyperbolic)
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{
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_is_finite_non_hyperbolic = is_finite_non_hyperbolic;
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}
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// Supposed to be called before "get_non_hyperbolic_edge"
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bool has_non_hyperbolic_edge() const
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{
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return _non_hyperbolic_edge <= 2;
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}
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// Higly recommended to call "has_non_hyperbolic_edge" before
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unsigned char get_non_hyperbolic_edge() const
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{
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assert(_is_finite_non_hyperbolic);
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assert(_non_hyperbolic_edge <= 2);
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return _non_hyperbolic_edge;
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}
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void set_non_hyperbolic_edge(unsigned char non_hyperbolic_edge)
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{
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assert(_is_finite_non_hyperbolic);
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assert(non_hyperbolic_edge <= 2);
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_non_hyperbolic_edge = non_hyperbolic_edge;
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}
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#ifndef CGAL_NO_DEPRECATED_CODE
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Vertex_handle mirror_vertex(int i) const;
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int mirror_index(int i) const;
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#endif
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private:
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// a finite face is non_hyperbolic if its circumscribing circle intersects the circle at infinity
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bool _is_finite_non_hyperbolic;
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// defined only if the face is finite and non_hyperbolic
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unsigned char _non_hyperbolic_edge;
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};
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#ifndef CGAL_NO_DEPRECATED_CODE
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template < class Gt, class Fb >
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inline
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typename Hyperbolic_triangulation_face_base_2<Gt,Fb>::Vertex_handle
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Hyperbolic_triangulation_face_base_2<Gt,Fb>::
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mirror_vertex(int i) const
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{
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CGAL_triangulation_precondition ( this->neighbor(i) != Face_handle()
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&& this->dimension() >= 1);
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//return neighbor(i)->vertex(neighbor(i)->index(this->handle()));
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return this->neighbor(i)->vertex(mirror_index(i));
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}
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template < class Gt, class Fb >
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inline int
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Hyperbolic_triangulation_face_base_2<Gt,Fb>::
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mirror_index(int i) const
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{
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// return the index of opposite vertex in neighbor(i);
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CGAL_triangulation_precondition (this->neighbor(i) != Face_handle() &&
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this->dimension() >= 1);
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if (this->dimension() == 1) {
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return 1 - (this->neighbor(i)->index(this->vertex(1-i)));
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}
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return this->ccw( this->neighbor(i)->index(this->vertex(this->ccw(i))));
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}
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#endif
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} //namespace CGAL
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#endif //CGAL_HYPERBOLIC_TRIANGULATION_FACE_BASE_2_H
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