/usr/include/CGAL/Cartesian/Line_3.h is in libcgal-dev 4.7-4.
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 | // Copyright (c) 2000
// 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
#ifndef CGAL_CARTESIAN_LINE_3_H
#define CGAL_CARTESIAN_LINE_3_H
#include <utility>
#include <CGAL/Handle_for.h>
namespace CGAL {
template < class R_ >
class LineC3
{
typedef typename R_::RT RT;
typedef typename R_::Point_3 Point_3;
typedef typename R_::Vector_3 Vector_3;
typedef typename R_::Direction_3 Direction_3;
typedef typename R_::Plane_3 Plane_3;
typedef typename R_::Ray_3 Ray_3;
typedef typename R_::Line_3 Line_3;
typedef typename R_::Segment_3 Segment_3;
typedef std::pair<Point_3, Vector_3> Rep;
typedef typename R_::template Handle<Rep>::type Base;
Base base;
public:
typedef R_ R;
LineC3() {}
LineC3(const Point_3 &p, const Point_3 &q)
{ *this = R().construct_line_3_object()(p, q); }
explicit LineC3(const Segment_3 &s)
{ *this = R().construct_line_3_object()(s); }
explicit LineC3(const Ray_3 &r)
{ *this = R().construct_line_3_object()(r); }
LineC3(const Point_3 &p, const Vector_3 &v)
: base(p, v) {}
LineC3(const Point_3 &p, const Direction_3 &d)
{ *this = R().construct_line_3_object()(p, d); }
bool operator==(const LineC3 &l) const;
bool operator!=(const LineC3 &l) const;
Plane_3 perpendicular_plane(const Point_3 &p) const;
Line_3 opposite() const;
const Point_3 & point() const
{
return get_pointee_or_identity(base).first;
}
const Vector_3 & to_vector() const
{
return get_pointee_or_identity(base).second;
}
Direction_3 direction() const
{
return Direction_3(to_vector());
}
Point_3 point(int i) const;
bool has_on(const Point_3 &p) const;
bool is_degenerate() const;
};
template < class R >
inline
bool
LineC3<R>::operator==(const LineC3<R> &l) const
{
if (CGAL::identical(base, l.base))
return true;
return has_on(l.point()) && (direction() == l.direction());
}
template < class R >
inline
bool
LineC3<R>::operator!=(const LineC3<R> &l) const
{
return !(*this == l);
}
template < class R >
inline
typename LineC3<R>::Point_3
LineC3<R>::point(int i) const
{ return point() + to_vector()*RT(i); }
template < class R >
inline
typename LineC3<R>::Plane_3
LineC3<R>::
perpendicular_plane(const typename LineC3<R>::Point_3 &p) const
{
return Plane_3(p, to_vector());
}
template < class R >
inline
typename LineC3<R>::Line_3
LineC3<R>::opposite() const
{
return Line_3(point(), -to_vector());
}
template < class R >
inline
bool
LineC3<R>::
has_on(const typename LineC3<R>::Point_3 &p) const
{
return collinear(point(), point()+to_vector(), p);
}
template < class R >
inline
bool
LineC3<R>::is_degenerate() const
{
return to_vector() == NULL_VECTOR;
}
} //namespace CGAL
#endif // CGAL_CARTESIAN_LINE_3_H
|