mirror of https://github.com/CGAL/cgal
80 lines
2.1 KiB
C++
80 lines
2.1 KiB
C++
// ======================================================================
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//
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// Copyright (c) 1999 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 : Vector_2.h
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// package : _2
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// revision : $Revision$
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// revision_date : $Date$
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// author(s) : Andreas Fabri, Stefan Schirra
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//
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// coordinator : MPI, Saarbruecken
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// ======================================================================
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#ifndef CGAL_VECTOR_2_H
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#define CGAL_VECTOR_2_H
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CGAL_BEGIN_NAMESPACE
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class Null_vector;
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template <class R_>
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class Vector_2 : public R_::Kernel_base::Vector_2
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{
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typedef typename R_::RT RT;
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typedef typename R_::Point_2 Point_2;
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typedef typename R_::Direction_2 Direction_2;
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typedef typename R_::Kernel_base::Vector_2 RVector_2;
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public:
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typedef R_ R;
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Vector_2() {}
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Vector_2(const CGAL::Vector_2<R> &v)
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: RVector_2(static_cast<const RVector_2&>(v)) {}
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Vector_2(const Point_2& a, const Point_2& b)
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: RVector_2(a, b) {}
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Vector_2(const RVector_2& v) : RVector_2(v) {}
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Vector_2(const Null_vector &v) : RVector_2(v) {}
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Vector_2(const RT &x, const RT &y) : RVector_2(x,y) {}
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Vector_2(const RT &x, const RT &y, const RT &w) : RVector_2(x,y,w) {}
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};
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#ifndef CGAL_NO_OSTREAM_INSERT_VECTOR_2
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template < class R >
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std::ostream &
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operator<<(std::ostream &os, const Vector_2<R> &v)
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{
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typedef typename R::Kernel_base::Vector_2 RVector_2;
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return os << static_cast<const RVector_2&>(v);
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}
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#endif // CGAL_NO_OSTREAM_INSERT_VECTOR_2
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#ifndef CGAL_NO_ISTREAM_EXTRACT_VECTOR_2
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template < class R >
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std::istream &
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operator>>(std::istream &is, Vector_2<R> &p)
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{
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typedef typename R::Kernel_base::Vector_2 RVector_2;
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return is >> static_cast<RVector_2&>(p);
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}
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#endif // CGAL_NO_ISTREAM_EXTRACT_VECTOR_2
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CGAL_END_NAMESPACE
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#endif // CGAL_VECTOR_2_H
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