mirror of https://github.com/CGAL/cgal
250 lines
5.3 KiB
C
250 lines
5.3 KiB
C
// ======================================================================
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//
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// Copyright (c) 2000 The CGAL Consortium
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//
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// This software and related documentation is part of an INTERNAL release
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// of the Computational Geometry Algorithms Library (CGAL). It is not
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// intended for general use.
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//
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// ----------------------------------------------------------------------
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//
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// release :
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// release_date :
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//
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// file : include/CGAL/Cartesian/Point_2.C
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// revision : $Revision$
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// revision_date : $Date$
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// author(s) : Andreas Fabri, Herve Bronnimann
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// coordinator : INRIA Sophia-Antipolis (Mariette.Yvinec@sophia.inria.fr)
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//
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// ======================================================================
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#ifndef CGAL_CARTESIAN_POINT_2_C
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#define CGAL_CARTESIAN_POINT_2_C
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#include <CGAL/Origin.h>
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#include <CGAL/Bbox_2.h>
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#include <CGAL/number_utils.h>
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#ifndef CGAL_CARTESIAN_REDEFINE_NAMES_2_H
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#define CGAL_CTAG
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#endif
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#ifdef CGAL_CFG_TYPENAME_BUG
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#define typename
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#endif
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CGAL_BEGIN_NAMESPACE
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template < class R >
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CGAL_KERNEL_CTOR_INLINE
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PointC2<R CGAL_CTAG>::PointC2()
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{
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new ( static_cast< void*>(ptr)) Twotuple<FT>();
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}
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template < class R >
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CGAL_KERNEL_CTOR_INLINE
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PointC2<R CGAL_CTAG>::PointC2(const Origin &)
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{
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new ( static_cast< void*>(ptr)) Twotuple<FT>(FT(0), FT(0));
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}
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template < class R >
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CGAL_KERNEL_CTOR_INLINE
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PointC2<R CGAL_CTAG>::PointC2(const PointC2<R CGAL_CTAG> &p)
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: Handle_for<Twotuple<typename R::FT> >(p)
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{}
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template < class R >
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CGAL_KERNEL_CTOR_INLINE
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PointC2<R CGAL_CTAG>::PointC2(const typename PointC2<R CGAL_CTAG>::Vector_2 &v)
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: Handle_for<Twotuple<typename R::FT> > (v)
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{}
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template < class R >
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CGAL_KERNEL_CTOR_INLINE
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PointC2<R CGAL_CTAG>::PointC2(const typename PointC2<R CGAL_CTAG>::FT &hx,
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const typename PointC2<R CGAL_CTAG>::FT &hy,
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const typename PointC2<R CGAL_CTAG>::FT &hw)
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{
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if( hw != FT(1))
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new ( static_cast< void*>(ptr)) Twotuple<FT>(hx/hw, hy/hw);
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else
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new ( static_cast< void*>(ptr)) Twotuple<FT>(hx, hy);
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}
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template < class R >
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CGAL_KERNEL_CTOR_INLINE
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PointC2<R CGAL_CTAG>::PointC2(const typename PointC2<R CGAL_CTAG>::FT &x,
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const typename PointC2<R CGAL_CTAG>::FT &y)
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{
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new ( static_cast< void*>(ptr)) Twotuple<FT>(x, y);
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}
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template < class R >
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inline
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PointC2<R CGAL_CTAG>::~PointC2()
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{}
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template < class R >
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inline
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bool
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PointC2<R CGAL_CTAG>::operator==(const PointC2<R CGAL_CTAG>& p) const
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{
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return equal_xy(*this, p);
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}
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template < class R >
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inline
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bool
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PointC2<R CGAL_CTAG>::operator!=(const PointC2<R CGAL_CTAG>& p) const
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{
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return !(*this == p);
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}
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template < class R >
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inline
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typename PointC2<R CGAL_CTAG>::FT
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PointC2<R CGAL_CTAG>::x() const
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{
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return ptr->e0;
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}
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template < class R >
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inline
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typename PointC2<R CGAL_CTAG>::FT
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PointC2<R CGAL_CTAG>::y() const
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{
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return ptr->e1;
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}
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template < class R >
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CGAL_KERNEL_INLINE
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typename PointC2<R CGAL_CTAG>::FT
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PointC2<R CGAL_CTAG>::cartesian(int i) const
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{
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CGAL_kernel_precondition( (i == 0) || (i == 1) );
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return (i == 0) ? x() : y();
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}
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template < class R >
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inline
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typename PointC2<R CGAL_CTAG>::FT
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PointC2<R CGAL_CTAG>::operator[](int i) const
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{
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return cartesian(i);
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}
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template < class R >
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inline
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int
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PointC2<R CGAL_CTAG>::dimension() const
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{
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return 2;
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}
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template < class R >
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inline
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typename PointC2<R CGAL_CTAG>::FT
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PointC2<R CGAL_CTAG>::hx() const
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{
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return x();
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}
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template < class R >
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inline
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typename PointC2<R CGAL_CTAG>::FT
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PointC2<R CGAL_CTAG>::hy() const
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{
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return y();
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}
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template < class R >
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inline
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typename PointC2<R CGAL_CTAG>::FT
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PointC2<R CGAL_CTAG>::hw() const
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{
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return FT(1);
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}
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template < class R >
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inline
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typename PointC2<R CGAL_CTAG>::FT
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PointC2<R CGAL_CTAG>::homogeneous(int i) const
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{
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CGAL_kernel_precondition( (i>=0) && (i<=2) );
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if (i<2)
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return cartesian(i);
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return FT(1);
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}
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template < class R >
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CGAL_KERNEL_INLINE
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PointC2<R CGAL_CTAG>
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PointC2<R CGAL_CTAG>::
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transform( const typename PointC2<R CGAL_CTAG>::Aff_transformation_2 &t) const
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{
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return t.transform(*this);
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}
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template < class R >
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CGAL_KERNEL_INLINE
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Bbox_2
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PointC2<R CGAL_CTAG>::bbox() const
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{
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double bx = CGAL::to_double(x());
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double by = CGAL::to_double(y());
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return Bbox_2(bx,by, bx,by);
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}
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#ifndef CGAL_NO_OSTREAM_INSERT_POINTC2
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template < class R >
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std::ostream &
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operator<<(std::ostream &os, const PointC2<R CGAL_CTAG> &p)
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{
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switch(os.iword(IO::mode)) {
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case IO::ASCII :
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return os << p.x() << ' ' << p.y();
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case IO::BINARY :
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write(os, p.x());
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write(os, p.y());
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return os;
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default:
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return os << "PointC2(" << p.x() << ", " << p.y() << ')';
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}
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}
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#endif // CGAL_NO_OSTREAM_INSERT_POINTC2
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#ifndef CGAL_NO_ISTREAM_EXTRACT_POINTC2
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template < class R >
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std::istream &
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operator>>(std::istream &is, PointC2<R CGAL_CTAG> &p)
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{
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typename PointC2<R CGAL_CTAG>::FT x, y;
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switch(is.iword(IO::mode)) {
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case IO::ASCII :
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is >> x >> y;
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break;
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case IO::BINARY :
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read(is, x);
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read(is, y);
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break;
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default:
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std::cerr << "" << std::endl;
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std::cerr << "Stream must be in ascii or binary mode" << std::endl;
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break;
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}
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p = PointC2<R CGAL_CTAG>(x, y);
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return is;
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}
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#endif // CGAL_NO_ISTREAM_EXTRACT_POINTC2
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CGAL_END_NAMESPACE
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#ifdef CGAL_CFG_TYPENAME_BUG
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#undef typename
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#endif
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#endif // CGAL_CARTESIAN_POINT_2_C
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