mirror of https://github.com/CGAL/cgal
121 lines
5.5 KiB
C++
121 lines
5.5 KiB
C++
// Copyright (c) 2014
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// INRIA Saclay-Ile de France (France)
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//
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// This file is part of CGAL (www.cgal.org)
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//
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// $URL$
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// $Id$
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// SPDX-License-Identifier: LGPL-3.0-or-later OR LicenseRef-Commercial
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//
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// Author(s) : Marc Glisse
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#ifndef CGAL_KD_KERNEL_2_INTERFACE_H
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#define CGAL_KD_KERNEL_2_INTERFACE_H
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#include <CGAL/NewKernel_d/functor_tags.h>
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#include <CGAL/transforming_iterator.h>
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#include <CGAL/NewKernel_d/utils.h>
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#include <CGAL/tuple.h>
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namespace CGAL {
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template <class Base_> struct Kernel_2_interface : public Base_ {
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typedef Base_ Base;
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typedef Kernel_2_interface<Base> Kernel;
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typedef typename Get_type<Base, RT_tag>::type RT;
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typedef typename Get_type<Base, FT_tag>::type FT;
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typedef typename Get_type<Base, Bool_tag>::type Boolean;
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typedef typename Get_type<Base, Sign_tag>::type Sign;
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typedef typename Get_type<Base, Comparison_result_tag>::type Comparison_result;
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typedef typename Get_type<Base, Orientation_tag>::type Orientation;
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typedef typename Get_type<Base, Oriented_side_tag>::type Oriented_side;
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typedef typename Get_type<Base, Bounded_side_tag>::type Bounded_side;
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typedef typename Get_type<Base, Angle_tag>::type Angle;
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typedef typename Get_type<Base, Point_tag>::type Point_2;
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typedef typename Get_type<Base, Vector_tag>::type Vector_2;
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typedef typename Get_type<Base, Segment_tag>::type Segment_2;
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typedef std::tuple<Point_2,Point_2,Point_2> Triangle_2; // triangulation insists...
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template <class T,int i> struct Help_2p_i {
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typedef typename Get_functor<Base, T>::type LT;
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typedef typename LT::result_type result_type;
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LT lt;
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Help_2p_i(Kernel const&k):lt(k){}
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result_type operator()(Point_2 const&a, Point_2 const&b) {
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return lt(a,b,i);
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}
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};
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typedef Help_2p_i<Less_point_cartesian_coordinate_tag,0> Less_x_2;
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typedef Help_2p_i<Less_point_cartesian_coordinate_tag,1> Less_y_2;
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typedef Help_2p_i<Compare_point_cartesian_coordinate_tag,0> Compare_x_2;
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typedef Help_2p_i<Compare_point_cartesian_coordinate_tag,1> Compare_y_2;
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struct Compare_xy_2 {
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Compare_x_2 cx_2;
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Compare_y_2 cy_2;
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Compare_xy_2(const Compare_x_2 & cx_2, const Compare_y_2 & cy_2)
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: cx_2(cx_2), cy_2(cy_2)
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{}
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typename Compare_x_2::result_type operator()(const Point_2 & p, const Point_2 & q)
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{
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auto res = cx_2(p, q);
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if (res == EQUAL) {
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return cy_2(p, q);
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}
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return res;
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}
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};
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struct Compare_distance_2 {
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typedef typename Get_functor<Base, Compare_distance_tag>::type CD;
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typedef typename CD::result_type result_type;
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CD cd;
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Compare_distance_2(Kernel const&k):cd(k){}
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result_type operator()(Point_2 const&a, Point_2 const&b, Point_2 const&c) {
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return cd(a,b,c);
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}
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result_type operator()(Point_2 const&a, Point_2 const&b, Point_2 const&c, Point_2 const&d) {
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return cd(a,b,c,d);
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}
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};
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struct Orientation_2 {
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typedef typename Get_functor<Base, Orientation_of_points_tag>::type O;
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typedef typename O::result_type result_type;
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O o;
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Orientation_2(Kernel const&k):o(k){}
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result_type operator()(Point_2 const&a, Point_2 const&b, Point_2 const&c) {
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//return o(a,b,c);
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Point_2 const* t[3]={&a,&b,&c};
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return o(make_transforming_iterator<Dereference_functor>(t+0),make_transforming_iterator<Dereference_functor>(t+3));
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}
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};
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struct Side_of_oriented_circle_2 {
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typedef typename Get_functor<Base, Side_of_oriented_sphere_tag>::type SOS;
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typedef typename SOS::result_type result_type;
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SOS sos;
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Side_of_oriented_circle_2(Kernel const&k):sos(k){}
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result_type operator()(Point_2 const&a, Point_2 const&b, Point_2 const&c, Point_2 const&d) {
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//return sos(a,b,c,d);
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Point_2 const* t[4]={&a,&b,&c};
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return sos(make_transforming_iterator<Dereference_functor>(t+0),make_transforming_iterator<Dereference_functor>(t+3), d);
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}
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};
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typedef typename Get_functor<Base, Construct_ttag<Point_tag> >::type Construct_point_2;
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Less_x_2 less_x_2_object()const{ return Less_x_2(*this); }
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Less_y_2 less_y_2_object()const{ return Less_y_2(*this); }
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Compare_x_2 compare_x_2_object()const{ return Compare_x_2(*this); }
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Compare_y_2 compare_y_2_object()const{ return Compare_y_2(*this); }
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Compare_xy_2 compare_xy_2_object() const { return Compare_xy_2(compare_x_2_object(), compare_y_2_object()); }
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Compare_distance_2 compare_distance_2_object()const{ return Compare_distance_2(*this); }
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Orientation_2 orientation_2_object()const{ return Orientation_2(*this); }
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Side_of_oriented_circle_2 side_of_oriented_circle_2_object()const{ return Side_of_oriented_circle_2(*this); }
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Construct_point_2 construct_point_2_object()const{ return Construct_point_2(*this); }
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};
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}
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#endif
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