mirror of https://github.com/CGAL/cgal
147 lines
4.8 KiB
C++
147 lines
4.8 KiB
C++
// Copyright (c) 2005-2008 INRIA Sophia-Antipolis (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) : Mariette Yvinec <Mariette.Yvinec@sophia.inria.fr>
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// Laurent Rineau <Laurent.Rineau@geometryfactory.com>
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// This traits override Construct_circumcenter_3 and
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// Construct_weighted_circumcenter_3
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// to get robust ones when called on slivers
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#ifndef CGAL_ROBUST_CIRCUMCENTER_TRAITS_3_H
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#define CGAL_ROBUST_CIRCUMCENTER_TRAITS_3_H
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#include <CGAL/number_utils_classes.h>
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#include <CGAL/Cartesian_converter.h>
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#include <CGAL/Robust_construction.h>
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#include <CGAL/Exact_predicates_exact_constructions_kernel.h>
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#include <CGAL/Regular_triangulation_euclidean_traits_3.h>
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namespace CGAL {
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template < typename K >
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class Robust_construct_weighted_circumcenter_3
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{
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public:
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typedef Exact_predicates_exact_constructions_kernel EK2;
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typedef Regular_triangulation_euclidean_traits_3<EK2> EK;
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typedef typename K::Weighted_point_3 Weighted_point_3;
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typedef typename K::Bare_point Bare_point;
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typedef typename K::FT FT;
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typedef Bare_point result_type;
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typedef Weighted_converter_3<Cartesian_converter<typename K::Kernel, EK2> > To_exact;
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typedef Weighted_converter_3<Cartesian_converter<EK2, typename K::Kernel> > Back_from_exact;
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Bare_point operator() ( const Weighted_point_3 & p,
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const Weighted_point_3 & q,
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const Weighted_point_3 & r,
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const Weighted_point_3 & s) const
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{
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To_exact to_exact;
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Back_from_exact back_from_exact;
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EK::Construct_weighted_circumcenter_3
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exact_weighted_circumcenter = EK().construct_weighted_circumcenter_3_object();
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return back_from_exact(exact_weighted_circumcenter(to_exact(p),
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to_exact(q),
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to_exact(r),
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to_exact(s)));
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}
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Bare_point operator() ( const Weighted_point_3 & p,
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const Weighted_point_3 & q,
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const Weighted_point_3 & r) const
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{
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To_exact to_exact;
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Back_from_exact back_from_exact;
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EK::Construct_weighted_circumcenter_3
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exact_weighted_circumcenter = EK().construct_weighted_circumcenter_3_object();
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return back_from_exact(exact_weighted_circumcenter(to_exact(p),
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to_exact(q),
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to_exact(r)));
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}
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Bare_point operator() ( const Weighted_point_3 & p,
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const Weighted_point_3 & q) const
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{
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To_exact to_exact;
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Back_from_exact Back_from_exact;
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EK::Construct_weighted_circumcenter_3
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exact_weighted_circumcenter = EK().construct_weighted_circumcenter_3_object();
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return back_from_exact(exact_weighted_circumcenter(to_exact(p),
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to_exact(q)));
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}
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};
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template < class K>
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class Robust_circumcenter_traits_3
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: public K
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{
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typedef Exact_predicates_exact_constructions_kernel EK;
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public:
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typedef CGAL::Robust_construction<EK::Construct_circumcenter_3,
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Cartesian_converter<K, EK>,
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Cartesian_converter<EK, K>,
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typename K::Point_3 > Construct_circumcenter_3;
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typedef CGAL::Robust_construction<EK::Compute_squared_radius_3,
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Cartesian_converter<K, EK>,
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Cartesian_converter<EK, K>,
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typename K::FT > Compute_squared_radius_3;
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Construct_circumcenter_3
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construct_circumcenter_3_object() const
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{ return Construct_circumcenter_3(); }
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Compute_squared_radius_3
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compute_squared_radius_3_object() const
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{ return Compute_squared_radius_3(); }
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};
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template < class K>
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class Robust_weighted_circumcenter_traits_3
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: public K
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{
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typedef Exact_predicates_exact_constructions_kernel EK;
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public:
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typedef typename Robust_circumcenter_traits_3<typename K::Kernel>::Construct_circumcenter_3 Construct_circumcenter_3;
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typedef typename Robust_circumcenter_traits_3<K>::Compute_squared_radius_3 Compute_squared_radius_3;
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Construct_circumcenter_3
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construct_circumcenter_3_object() const
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{ return Construct_circumcenter_3(); }
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typedef CGAL::Robust_construct_weighted_circumcenter_3<K> Construct_weighted_circumcenter_3;
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Construct_weighted_circumcenter_3
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construct_weighted_circumcenter_3_object() const
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{ return Construct_weighted_circumcenter_3(); }
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Compute_squared_radius_3
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compute_squared_radius_3_object() const
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{ return Compute_squared_radius_3(); }
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};
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} //namespace CGAL
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#endif //CGAL_ROBUST_CIRCUMCENTER_TRAITS_3_H
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