249 lines
6.1 KiB
C++
Executable File
249 lines
6.1 KiB
C++
Executable File
// Copyright (c) 1999
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// Utrecht University (The Netherlands),
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// ETH Zurich (Switzerland),
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// INRIA Sophia-Antipolis (France),
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// Max-Planck-Institute Saarbruecken (Germany),
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// and Tel-Aviv University (Israel). All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 3 of the License,
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// or (at your option) any later version.
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//
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// Licensees holding a valid commercial license may use this file in
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// accordance with the commercial license agreement provided with the software.
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//
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// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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//
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// $URL$
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// $Id$
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// SPDX-License-Identifier: LGPL-3.0+
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//
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//
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// Author(s) : Andreas Fabri, Stefan Schirra
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#ifndef CGAL_DIRECTION_3_H
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#define CGAL_DIRECTION_3_H
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#include <CGAL/assertions.h>
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#include <boost/type_traits/is_same.hpp>
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#include <CGAL/Kernel/Return_base_tag.h>
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#include <CGAL/kernel_assertions.h>
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#include <CGAL/representation_tags.h>
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#include <CGAL/Dimension.h>
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#include <CGAL/result_of.h>
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#include <CGAL/IO/io.h>
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namespace CGAL {
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template <class R_>
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class Direction_3 : public R_::Kernel_base::Direction_3
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{
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typedef typename R_::RT RT;
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typedef typename R_::Vector_3 Vector_3;
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typedef typename R_::Line_3 Line_3;
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typedef typename R_::Ray_3 Ray_3;
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typedef typename R_::Segment_3 Segment_3;
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typedef typename R_::Aff_transformation_3 Aff_transformation_3;
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typedef Direction_3 Self;
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CGAL_static_assertion((boost::is_same<Self, typename R_::Direction_3>::value));
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public:
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typedef Dimension_tag<3> Ambient_dimension;
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typedef Dimension_tag<0> Feature_dimension;
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typedef typename R_::Kernel_base::Direction_3 Rep;
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const Rep& rep() const
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{
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return *this;
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}
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Rep& rep()
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{
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return *this;
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}
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typedef R_ R;
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Direction_3() {}
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Direction_3(const Rep& d)
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: Rep(d) {}
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explicit Direction_3(const Vector_3& v)
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: Rep(typename R::Construct_direction_3()(Return_base_tag(), v)) {}
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explicit Direction_3(const Line_3& l)
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: Rep(typename R::Construct_direction_3()(Return_base_tag(), l)) {}
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explicit Direction_3(const Ray_3& r)
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: Rep(typename R::Construct_direction_3()(Return_base_tag(), r)) {}
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explicit Direction_3(const Segment_3& s)
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: Rep(typename R::Construct_direction_3()(Return_base_tag(), s)) {}
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Direction_3(const RT& hx, const RT& hy, const RT& hz)
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: Rep(typename R::Construct_direction_3()(Return_base_tag(), hx, hy, hz)) {}
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Direction_3 transform(const Aff_transformation_3 &t) const
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{
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return t.transform(*this);
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}
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Direction_3
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operator-() const
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{
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return R().construct_opposite_direction_3_object()(*this);
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}
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Vector_3 to_vector() const
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{
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return R().construct_vector_3_object()(*this);
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}
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Vector_3 vector() const { return to_vector(); }
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typename cpp11::result_of<typename R::Compute_dx_3(Direction_3)>::type
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dx() const
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{
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return R().compute_dx_3_object()(*this);
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}
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typename cpp11::result_of<typename R::Compute_dy_3(Direction_3)>::type
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dy() const
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{
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return R().compute_dy_3_object()(*this);
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}
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typename cpp11::result_of<typename R::Compute_dz_3(Direction_3)>::type
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dz() const
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{
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return R().compute_dz_3_object()(*this);
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}
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typename cpp11::result_of<typename R::Compute_dx_3(Direction_3)>::type
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delta(int i) const
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{
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CGAL_kernel_precondition( i >= 0 && i <= 2 );
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if (i==0) return dx();
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if (i==1) return dy();
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return dz();
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}
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};
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template <class R >
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std::ostream&
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insert(std::ostream& os, const Direction_3<R>& d, const Cartesian_tag&)
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{
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typename R::Vector_3 v = d.to_vector();
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switch(get_mode(os)) {
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case IO::ASCII :
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return os << v.x() << ' ' << v.y() << ' ' << v.z();
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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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write(os, v.z());
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return os;
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default:
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os << "DirectionC3(" << v.x() << ", " << v.y() << ", " << v.z() << ")";
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return os;
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}
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}
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template <class R >
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std::ostream&
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insert(std::ostream& os, const Direction_3<R>& d, const Homogeneous_tag&)
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{
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switch(get_mode(os))
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{
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case IO::ASCII :
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return os << d.dx() << ' ' << d.dy() << ' ' << d.dz();
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case IO::BINARY :
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write(os, d.dx());
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write(os, d.dy());
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write(os, d.dz());
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return os;
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default:
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return os << "DirectionH3(" << d.dx() << ", "
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<< d.dy() << ", "
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<< d.dz() << ')';
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}
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}
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template < class R >
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std::ostream&
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operator<<(std::ostream& os, const Direction_3<R>& d)
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{
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return insert(os, d, typename R::Kernel_tag() );
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}
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template <class R >
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std::istream&
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extract(std::istream& is, Direction_3<R>& d, const Cartesian_tag&)
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{
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typename R::FT x(0), y(0), z(0);
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switch(get_mode(is)) {
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case IO::ASCII :
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is >> iformat(x) >> iformat(y) >> iformat(z);
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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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read(is, z);
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break;
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default:
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is.setstate(std::ios::failbit);
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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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if (is)
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d = Direction_3<R>(x, y, z);
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return is;
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}
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template <class R >
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std::istream&
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extract(std::istream& is, Direction_3<R>& d, const Homogeneous_tag&)
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{
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typename R::RT x, y, z;
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switch(get_mode(is))
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{
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case IO::ASCII :
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is >> iformat(x) >> iformat(y) >> iformat(z);
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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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read(is, z);
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break;
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default:
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is.setstate(std::ios::failbit);
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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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if (is)
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d = Direction_3<R>(x, y, z);
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return is;
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}
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template < class R >
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std::istream&
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operator>>(std::istream& is, Direction_3<R>& d)
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{
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return extract(is, d, typename R::Kernel_tag() );
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}
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} //namespace CGAL
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#endif // CGAL_DIRECTION_3_H
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