/usr/include/CGAL/Direction_3.h is in libcgal-dev 4.2-5ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 | // Copyright (c) 1999
// Utrecht University (The Netherlands),
// ETH Zurich (Switzerland),
// INRIA Sophia-Antipolis (France),
// Max-Planck-Institute Saarbruecken (Germany),
// and Tel-Aviv University (Israel). All rights reserved.
//
// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 3 of the License,
// or (at your option) any later version.
//
// Licensees holding a valid commercial license may use this file in
// accordance with the commercial license agreement provided with the software.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
//
// $URL$
// $Id$
//
//
// Author(s) : Andreas Fabri, Stefan Schirra
#ifndef CGAL_DIRECTION_3_H
#define CGAL_DIRECTION_3_H
#include <CGAL/assertions.h>
#include <boost/type_traits/is_same.hpp>
#include <CGAL/Kernel/Return_base_tag.h>
#include <CGAL/representation_tags.h>
#include <CGAL/Dimension.h>
namespace CGAL {
template <class R_>
class Direction_3 : public R_::Kernel_base::Direction_3
{
typedef typename R_::RT RT;
typedef typename R_::Vector_3 Vector_3;
typedef typename R_::Line_3 Line_3;
typedef typename R_::Ray_3 Ray_3;
typedef typename R_::Segment_3 Segment_3;
typedef typename R_::Aff_transformation_3 Aff_transformation_3;
typedef Direction_3 Self;
CGAL_static_assertion((boost::is_same<Self, typename R_::Direction_3>::value));
public:
typedef Dimension_tag<3> Ambient_dimension;
typedef Dimension_tag<0> Feature_dimension;
typedef typename R_::Kernel_base::Direction_3 Rep;
const Rep& rep() const
{
return *this;
}
Rep& rep()
{
return *this;
}
typedef R_ R;
Direction_3() {}
Direction_3(const Rep& d)
: Rep(d) {}
explicit Direction_3(const Vector_3& v)
: Rep(typename R::Construct_direction_3()(Return_base_tag(), v)) {}
explicit Direction_3(const Line_3& l)
: Rep(typename R::Construct_direction_3()(Return_base_tag(), l)) {}
explicit Direction_3(const Ray_3& r)
: Rep(typename R::Construct_direction_3()(Return_base_tag(), r)) {}
explicit Direction_3(const Segment_3& s)
: Rep(typename R::Construct_direction_3()(Return_base_tag(), s)) {}
Direction_3(const RT& hx, const RT& hy, const RT& hz)
: Rep(typename R::Construct_direction_3()(Return_base_tag(), hx, hy, hz)) {}
Direction_3 transform(const Aff_transformation_3 &t) const
{
return t.transform(*this);
}
Direction_3
operator-() const
{
return R().construct_opposite_direction_3_object()(*this);
}
Vector_3 to_vector() const
{
return R().construct_vector_3_object()(*this);
}
Vector_3 vector() const { return to_vector(); }
typename cpp11::result_of<typename R::Compute_dx_3(Direction_3)>::type
dx() const
{
return R().compute_dx_3_object()(*this);
}
typename cpp11::result_of<typename R::Compute_dy_3(Direction_3)>::type
dy() const
{
return R().compute_dy_3_object()(*this);
}
typename cpp11::result_of<typename R::Compute_dz_3(Direction_3)>::type
dz() const
{
return R().compute_dz_3_object()(*this);
}
typename cpp11::result_of<typename R::Compute_dx_3(Direction_3)>::type
delta(int i) const
{
CGAL_kernel_precondition( i >= 0 && i <= 2 );
if (i==0) return dx();
if (i==1) return dy();
return dz();
}
};
template <class R >
std::ostream&
insert(std::ostream& os, const Direction_3<R>& d, const Cartesian_tag&)
{
typename R::Vector_3 v = d.to_vector();
switch(os.iword(IO::mode)) {
case IO::ASCII :
return os << v.x() << ' ' << v.y() << ' ' << v.z();
case IO::BINARY :
write(os, v.x());
write(os, v.y());
write(os, v.z());
return os;
default:
os << "DirectionC3(" << v.x() << ", " << v.y() << ", " << v.z() << ")";
return os;
}
}
template <class R >
std::ostream&
insert(std::ostream& os, const Direction_3<R>& d, const Homogeneous_tag&)
{
switch(os.iword(IO::mode))
{
case IO::ASCII :
return os << d.dx() << ' ' << d.dy() << ' ' << d.dz();
case IO::BINARY :
write(os, d.dx());
write(os, d.dy());
write(os, d.dz());
return os;
default:
return os << "DirectionH3(" << d.dx() << ", "
<< d.dy() << ", "
<< d.dz() << ')';
}
}
template < class R >
std::ostream&
operator<<(std::ostream& os, const Direction_3<R>& d)
{
return insert(os, d, typename R::Kernel_tag() );
}
template <class R >
std::istream&
extract(std::istream& is, Direction_3<R>& d, const Cartesian_tag&)
{
typename R::FT x, y, z;
switch(is.iword(IO::mode)) {
case IO::ASCII :
is >> x >> y >> z;
break;
case IO::BINARY :
read(is, x);
read(is, y);
read(is, z);
break;
default:
std::cerr << "" << std::endl;
std::cerr << "Stream must be in ascii or binary mode" << std::endl;
break;
}
if (is)
d = Direction_3<R>(x, y, z);
return is;
}
template <class R >
std::istream&
extract(std::istream& is, Direction_3<R>& d, const Homogeneous_tag&)
{
typename R::RT x, y, z;
switch(is.iword(IO::mode))
{
case IO::ASCII :
is >> x >> y >> z;
break;
case IO::BINARY :
read(is, x);
read(is, y);
read(is, z);
break;
default:
std::cerr << "" << std::endl;
std::cerr << "Stream must be in ascii or binary mode" << std::endl;
break;
}
if (is)
d = Direction_3<R>(x, y, z);
return is;
}
template < class R >
std::istream&
operator>>(std::istream& is, Direction_3<R>& d)
{
return extract(is, d, typename R::Kernel_tag() );
}
} //namespace CGAL
#endif // CGAL_DIRECTION_3_H
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