/usr/include/CGAL/Homogeneous/RayH3.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 | // 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) : Stefan Schirra
#ifndef CGAL_RAYH3_H
#define CGAL_RAYH3_H
#include <utility>
#include <CGAL/kernel_config.h>
#include <CGAL/assertions.h>
#include <CGAL/Origin.h>
namespace CGAL {
template < class R_ >
class RayH3
{
typedef typename R_::RT RT;
typedef typename R_::FT FT;
typedef typename R_::Point_3 Point_3;
typedef typename R_::Line_3 Line_3;
typedef typename R_::Direction_3 Direction_3;
typedef typename R_::Vector_3 Vector_3;
typedef std::pair<Point_3, Vector_3> Rep;
typedef typename R_::template Handle<Rep>::type Base;
Base base;
public:
typedef R_ R;
RayH3() {}
RayH3( const Point_3& sp, const Point_3& secondp)
: base(sp, secondp-sp) {}
RayH3( const Point_3& sp, const Vector_3& v)
: base(sp, v) {}
RayH3( const Point_3& sp, const Direction_3& d)
: base(sp, d.to_vector()) {}
RayH3( const Point_3& sp, const Line_3& l)
: base(sp, l.to_vector()) {}
const Point_3 & start() const;
const Point_3 & source() const;
Point_3 second_point() const;
Point_3 point(int i) const;
Direction_3 direction() const;
const Vector_3 & to_vector() const;
Line_3 supporting_line() const;
RayH3<R> opposite() const;
bool has_on(const Point_3& p) const;
bool collinear_has_on(const Point_3 &p) const;
bool is_degenerate() const;
bool operator==(const RayH3<R>& r) const;
bool operator!=(const RayH3<R>& r) const;
};
template < class R >
inline
const typename RayH3<R>::Point_3 &
RayH3<R>::source() const
{ return get(base).first; }
template < class R >
inline
const typename RayH3<R>::Point_3 &
RayH3<R>::start() const
{ return get(base).first; }
template < class R >
inline
const typename RayH3<R>::Vector_3 &
RayH3<R>::to_vector() const
{
return get(base).second;
}
template < class R >
inline
typename RayH3<R>::Direction_3
RayH3<R>::direction() const
{
return to_vector().direction();
}
template < class R >
CGAL_KERNEL_INLINE
typename RayH3<R>::Point_3
RayH3<R>::second_point() const
{ return start() + to_vector(); }
template < class R >
CGAL_KERNEL_INLINE
typename RayH3<R>::Point_3
RayH3<R>::point(int i) const
{
CGAL_kernel_precondition( i >= 0 );
return start() + RT(i)*to_vector();
}
template < class R >
CGAL_KERNEL_INLINE
typename RayH3<R>::Line_3
RayH3<R>::supporting_line() const
{
CGAL_kernel_precondition( !is_degenerate() );
return Line_3(start(), second_point() );
}
template < class R >
CGAL_KERNEL_INLINE
RayH3<R>
RayH3<R>::opposite() const
{ return RayH3<R>( start(), - direction() ); }
template < class R >
CGAL_KERNEL_INLINE
bool
RayH3<R>::has_on(const typename RayH3<R>::Point_3 &p) const
{
return ( ( p == start() )
||( Direction_3(p - start()) == direction() ) );
}
template < class R >
inline /* XXX */
bool
RayH3<R>::collinear_has_on(const typename RayH3<R>::Point_3 &p) const
{ return has_on(p); }
template < class R >
inline
bool
RayH3<R>::is_degenerate() const
{ return to_vector() == NULL_VECTOR; }
template < class R >
CGAL_KERNEL_INLINE
bool
RayH3<R>::operator==(const RayH3<R>& r) const
{ return ( (start() == r.start() )&&( direction() == r.direction() ) ); }
template < class R >
CGAL_KERNEL_INLINE
bool
RayH3<R>::operator!=( const RayH3<R>& r) const
{ return !operator==(r); }
} //namespace CGAL
#endif // CGAL_RAYH3_H
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