mirror of https://github.com/CGAL/cgal
77 lines
3.0 KiB
C++
77 lines
3.0 KiB
C++
#ifndef CGAL_KD_KERNEL_2_INTERFACE_H
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#define CGAL_KD_KERNEL_2_INTERFACE_H
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#include <CGAL/functor_tags.h>
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#include <CGAL/transforming_iterator.h>
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#include <CGAL/marcutils.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 Base::Point Point_2;
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typedef typename Base::Vector Vector_2;
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struct Segment_2 {};
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typedef cpp0x::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 Base::template Functor<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_distance_2 {
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typedef typename Base::template Functor<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 Base::template Functor<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_sphere_2 {
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typedef typename Base::template Functor<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_sphere_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,&d};
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return sos(make_transforming_iterator<Dereference_functor>(t+0),make_transforming_iterator<Dereference_functor>(t+4));
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}
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};
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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_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_sphere_2 side_of_oriented_sphere_2_object()const{ return Side_of_oriented_sphere_2(*this); }
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};
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}
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#endif
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