mirror of https://github.com/CGAL/cgal
327 lines
6.5 KiB
C
327 lines
6.5 KiB
C
// revision : $Revision$
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// revision_date : $Date$
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// author(s) : Andreas Fabri, Herve Bronnimann
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#ifndef CGAL_CARTESIAN_VECTOR_2_C
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#define CGAL_CARTESIAN_VECTOR_2_C
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#include <CGAL/Cartesian/Direction_2.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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inline
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_Twotuple<typename VectorC2<R CGAL_CTAG>::FT>*
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VectorC2<R CGAL_CTAG>::ptr() const
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{
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return (_Twotuple<FT>*)PTR;
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}
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template < class R >
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VectorC2<R CGAL_CTAG>::VectorC2()
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{
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PTR = new _Twotuple<typename VectorC2<R CGAL_CTAG>::FT>();
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}
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template < class R >
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CGAL_KERNEL_CTOR_INLINE
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VectorC2<R CGAL_CTAG>::VectorC2(const VectorC2<R CGAL_CTAG> &v) :
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Handle((Handle&)v)
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{}
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template < class R >
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CGAL_KERNEL_CTOR_INLINE
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VectorC2<R CGAL_CTAG>::VectorC2(const Null_vector &)
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{
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PTR = new _Twotuple<FT>(FT(0), FT(0));
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}
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template < class R >
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CGAL_KERNEL_CTOR_MEDIUM_INLINE
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VectorC2<R CGAL_CTAG>::VectorC2(const typename VectorC2<R CGAL_CTAG>::FT &hx,
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const typename VectorC2<R CGAL_CTAG>::FT &hy,
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const typename VectorC2<R CGAL_CTAG>::FT &hw)
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{
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if ( hw == FT(1))
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PTR = new _Twotuple<FT>(hx, hy);
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else
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PTR = new _Twotuple<FT>(hx/hw, hy/hw);
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}
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template < class R >
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CGAL_KERNEL_CTOR_INLINE
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VectorC2<R CGAL_CTAG>::VectorC2(const typename VectorC2<R CGAL_CTAG>::FT &x,
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const typename VectorC2<R CGAL_CTAG>::FT &y)
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{
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PTR = new _Twotuple<FT>(x, y);
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}
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template < class R >
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inline
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VectorC2<R CGAL_CTAG>::~VectorC2()
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{}
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template < class R >
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inline
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VectorC2<R CGAL_CTAG> &
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VectorC2<R CGAL_CTAG>::operator=(const VectorC2<R CGAL_CTAG> &v)
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{
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Handle::operator=(v);
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return *this;
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}
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template < class R >
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CGAL_KERNEL_CTOR_INLINE
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VectorC2<R CGAL_CTAG>::
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VectorC2(const typename VectorC2<R CGAL_CTAG>::Point_2 &p)
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: Handle((Handle&)p)
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{}
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template < class R >
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CGAL_KERNEL_CTOR_INLINE
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VectorC2<R CGAL_CTAG>::
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VectorC2(const typename VectorC2<R CGAL_CTAG>::Direction_2 &d)
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: Handle((Handle&)d)
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{}
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template < class R >
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CGAL_KERNEL_INLINE
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bool
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VectorC2<R CGAL_CTAG>::operator==(const VectorC2<R CGAL_CTAG> &v) const
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{
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return x() == v.x() && y() == v.y();
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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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VectorC2<R CGAL_CTAG>::operator!=(const VectorC2<R CGAL_CTAG> &v) const
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{
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return !(*this == v);
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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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VectorC2<R CGAL_CTAG>::operator==(const Null_vector &) const
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{
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return x() == FT(0) && y() == FT(0);
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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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VectorC2<R CGAL_CTAG>::operator!=(const Null_vector &v) const
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{
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return !(*this == v);
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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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VectorC2<R CGAL_CTAG>::id() const
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{
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return (int) PTR;
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}
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template < class R >
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inline
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typename VectorC2<R CGAL_CTAG>::FT
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VectorC2<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 VectorC2<R CGAL_CTAG>::FT
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VectorC2<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 VectorC2<R CGAL_CTAG>::FT
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VectorC2<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 VectorC2<R CGAL_CTAG>::FT
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VectorC2<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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VectorC2<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 VectorC2<R CGAL_CTAG>::FT
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VectorC2<R CGAL_CTAG>::hx() 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 VectorC2<R CGAL_CTAG>::FT
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VectorC2<R CGAL_CTAG>::hy() 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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inline
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typename VectorC2<R CGAL_CTAG>::FT
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VectorC2<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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CGAL_KERNEL_INLINE
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typename VectorC2<R CGAL_CTAG>::FT
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VectorC2<R CGAL_CTAG>::homogeneous(int i) const
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{
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return (i == 2) ? FT(1) : cartesian(i);
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}
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template < class R >
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CGAL_KERNEL_INLINE
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VectorC2<R CGAL_CTAG>
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VectorC2<R CGAL_CTAG>::operator+(const VectorC2<R CGAL_CTAG> &w) const
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{
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return VectorC2<R CGAL_CTAG>(x() + w.x(), y() + w.y());
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}
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template < class R >
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CGAL_KERNEL_INLINE
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VectorC2<R CGAL_CTAG>
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VectorC2<R CGAL_CTAG>::operator-(const VectorC2<R CGAL_CTAG> &w) const
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{
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return VectorC2<R CGAL_CTAG>(x() - w.x(), y() - w.y());
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}
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template < class R >
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CGAL_KERNEL_INLINE
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VectorC2<R CGAL_CTAG>
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VectorC2<R CGAL_CTAG>::operator-() const
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{
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return VectorC2<R CGAL_CTAG>(-x(), -y());
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}
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template < class R >
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CGAL_KERNEL_INLINE
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typename VectorC2<R CGAL_CTAG>::FT
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VectorC2<R CGAL_CTAG>::operator*(const VectorC2<R CGAL_CTAG> &w) const
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{
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return x() * w.x() + y() * w.y();
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}
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template < class R >
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CGAL_KERNEL_INLINE
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VectorC2<R CGAL_CTAG>
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VectorC2<R CGAL_CTAG>::
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operator/(const typename VectorC2<R CGAL_CTAG>::FT &c) const
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{
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return VectorC2<R CGAL_CTAG>( x()/c, y()/c);
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}
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template < class R >
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inline
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typename VectorC2<R CGAL_CTAG>::Direction_2
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VectorC2<R CGAL_CTAG>::direction() const
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{
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return Direction_2(*this);
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}
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template < class R >
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CGAL_KERNEL_MEDIUM_INLINE
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VectorC2<R CGAL_CTAG>
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VectorC2<R CGAL_CTAG>::perpendicular(const Orientation &o) const
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{
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CGAL_kernel_precondition( o != COLLINEAR );
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if (o == COUNTERCLOCKWISE)
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return VectorC2<R CGAL_CTAG>(-y(), x());
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else
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return VectorC2<R CGAL_CTAG>(y(), -x());
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}
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template < class R >
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inline
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VectorC2<R CGAL_CTAG>
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VectorC2<R CGAL_CTAG>::
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transform(const typename VectorC2<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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#ifndef CGAL_NO_OSTREAM_INSERT_VECTORC2
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template < class R >
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std::ostream &
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operator<<(std::ostream &os, const VectorC2<R CGAL_CTAG> &v)
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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 << v.x() << ' ' << v.y();
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case IO::BINARY :
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write(os, v.x());
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write(os, v.y());
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return os;
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default:
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return os << "VectorC2(" << v.x() << ", " << v.y() << ')';
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}
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}
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#endif // CGAL_NO_OSTREAM_INSERT_VECTORC2
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#ifndef CGAL_NO_ISTREAM_EXTRACT_VECTORC2
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template < class R >
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std::istream &
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operator>>(std::istream &is, VectorC2<R CGAL_CTAG> &p)
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{
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typename VectorC2<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 = VectorC2<R CGAL_CTAG>(x, y);
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return is;
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}
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#endif // CGAL_NO_ISTREAM_EXTRACT_VECTORC2
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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_VECTOR_2_C
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