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use specialized classes with parameterized with 

kernel tags
This commit is contained in:
Peter Hachenberger 2006-03-12 22:20:20 +00:00
parent ef4adb44da
commit 312b04bebb
1 changed files with 42 additions and 37 deletions
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43
Nef_3/include/CGAL/OFF_to_nef_3.h
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@ -37,10 +37,16 @@
CGAL_BEGIN_NAMESPACE
template <class Kernel>
typename Kernel::Point_3
number_type_converter_nef_3 (const CGAL::Cartesian<double>::Point_3 &d)
{
class Homogeneous_tag;
class Cartesian_tag;
template<typename Tag, typename Kernel> class number_type_converter_nef_3;
template<class Kernel>
class number_type_converter_nef_3<Homogeneous_tag, Kernel> {
public:
static typename Kernel::Point_3
convert (const CGAL::Cartesian<double>::Point_3 &d)
{
typedef typename Kernel::Point_3 Point_3;
typedef typename Kernel::RT RT;
@ -64,21 +70,17 @@ number_type_converter_nef_3 (const CGAL::Cartesian<double>::Point_3 &d)
RT rw (outw.str().c_str());
return Point_3 (rx, ry, rz, rw);
}
}
};
template <>
CGAL::Cartesian<CGAL::Gmpq>::Point_3
number_type_converter_nef_3<CGAL::Cartesian<CGAL::Gmpq> > (const CGAL::Cartesian<double>::Point_3 &d)
{ return CGAL::Cartesian<CGAL::Gmpq>::Point_3 (d.x(), d.y(), d.z());
}
#ifdef CGAL_USE_LEDA
template <>
CGAL::Cartesian<leda_rational>::Point_3
number_type_converter_nef_3<CGAL::Cartesian<leda_rational> > (const CGAL::Cartesian<double>::Point_3 &d)
{ return CGAL::Cartesian<leda_rational>::Point_3 (d.x(), d.y(), d.z());
}
#endif // CGAL_USE_LEDA
template<class Kernel>
class number_type_converter_nef_3<Cartesian_tag, Kernel> {
public:
static typename Kernel::Point_3
convert (const CGAL::Cartesian<double>::Point_3 &d)
{ return typename Kernel::Point_3(d.x(), d.y(), d.z());
}
};
CGAL_END_NAMESPACE
#endif // NUMBER_TYPE_CONVERTER_NEF_3_H
@ -123,6 +125,9 @@ OFF_to_nef_3 (std::istream &i_st, Nef_3 &nef_union, bool verb=false)
typedef Scan_OFF::Facet_iterator Scan_facet_it;
typedef Scan_OFF::Index_iterator Scan_index_it;
typedef typename Kernel::Kernel_tag Kernel_tag;
typedef typename CGAL::number_type_converter_nef_3<Kernel_tag,Kernel> ntc;
// declarations and defaults
std::size_t discarded_facets=0;
long idx;
@ -150,7 +155,7 @@ OFF_to_nef_3 (std::istream &i_st, Nef_3 &nef_union, bool verb=false)
Scan_vertex_it v_it = scan.vertices_begin();
for (idx=0; v_it != scan.vertices_end(); ++v_it, ++idx)
{ V_scan.push_back (*v_it);
V.push_back (CGAL::number_type_converter_nef_3<Kernel>(*v_it));
V.push_back (ntc::convert(*v_it));
}
CGAL_warning ( idx==NOV );
NOV = idx;