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Let us override default predicates for specific dimensions.

This commit is contained in:
Marc Glisse 2011-10-28 15:11:17 +00:00
parent 58ebdbac51
commit 38f2c13c86
3 changed files with 63 additions and 1 deletions
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29
NewKernel_d/include/CGAL/Kernel_d/Cartesian_2.h Normal file
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@ -0,0 +1,29 @@
#ifndef CGAL_KD_CARTESIAN_2_H
#define CGAL_KD_CARTESIAN_2_H
#include <CGAL/functor_tags.h>
#include <CGAL/predicates/sign_of_determinant.h>
namespace CGAL {
namespace CartesianDKernelFunctors {
template <class R_>
struct Orientation_of_points_2 : private Store_kernel<R_> {
CGAL_FUNCTOR_INIT_STORE(Orientation_of_points_2);
typedef typename R_::template Type<Point_tag>::type Point;
typedef typename R_::Orientation result_type;
typedef typename R_::FT FT;
template<class Iter>
result_type operator()(Iter f, Iter e)const{
typename R_::template Functor<Compute_cartesian_coordinate_tag>::type c(this->kernel());
Point const&A=*f;
FT const& ax=c(A,0);
FT const& ay=c(A,1);
Point const&B=*++f;
Point const&C=*++f;
CGAL_assertion(++f==e);
return sign_of_determinant(c(B,0)-ax,c(B,1)-ay,c(C,0)-ax,c(C,1)-ay);
}
};
}
}
#endif

6
NewKernel_d/include/CGAL/Kernel_d/Cartesian_complete.h
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@ -3,6 +3,7 @@
#include <CGAL/Kernel_d/function_objects_cartesian.h>
#include <CGAL/Kernel_d/Segmentd.h>
#include <CGAL/Kernel_d/Cartesian_per_dimension.h>
#include <boost/mpl/if.hpp>
#include <boost/type_traits/is_same.hpp>
#include <boost/mpl/has_xxx.hpp>
@ -16,7 +17,7 @@ BOOST_MPL_HAS_XXX_TRAIT_DEF(Direction)
BOOST_MPL_HAS_XXX_TRAIT_DEF(Line)
}
template<class R_,class Derived_> struct Cartesian_define_all_functors
template<class R_,class Derived_> struct Cartesian_define_all_functors_
: public R_
{
typedef R_ Kernel_base;
@ -39,6 +40,9 @@ template<class R_,class Derived_> struct Cartesian_define_all_functors
};
template<class R_,class Derived_> struct Cartesian_define_all_functors
: public Cartesian_per_dimension<typename R_::Default_ambient_dimension,Cartesian_define_all_functors_<R_,Derived_>,Derived_> {};
template<class R_,bool force_=false> struct Cartesian_complete_types
: public R_
{

29
NewKernel_d/include/CGAL/Kernel_d/Cartesian_per_dimension.h Normal file
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@ -0,0 +1,29 @@
#ifndef CGAL_KD_CARTESIAN_PER_DIM_H
#define CGAL_KD_CARTESIAN_PER_DIM_H
#include <CGAL/functor_tags.h>
#include <CGAL/Dimension.h>
#include <CGAL/predicates/sign_of_determinant.h>
#include <CGAL/Kernel_d/Cartesian_2.h>
namespace CGAL {
template <class Dim_, class R_, class Derived_>
struct Cartesian_per_dimension : public R_ {};
// TODO: we want to put the actual functors in some other file. Maybe name the
// classes Orientation_2 to make it easy to typedef them all.
template <class R_, class Derived_>
struct Cartesian_per_dimension<Dimension_tag<2>,R_,Derived_> : public R_ {
typedef R_ Kernel_base;
template<class F, class D=void> struct Functor
: Kernel_base::template Functor<F,D>
{ };
#define CGAL_override_in_dim2(X) \
template<class D> struct Functor<X##_tag,D> { \
typedef CartesianDKernelFunctors::X##_2<Derived_> type; \
}
CGAL_override_in_dim2(Orientation_of_points);
};
}
#endif