ceph/src/boost/libs/geometry/include/boost/geometry/algorithms/detail/disjoint/linear_segment_or_box.hpp

   1 // Boost.Geometry (aka GGL, Generic Geometry Library)
   2
   3 // Copyright (c) 2007-2014 Barend Gehrels, Amsterdam, the Netherlands.
   4 // Copyright (c) 2008-2014 Bruno Lalande, Paris, France.
   5 // Copyright (c) 2009-2014 Mateusz Loskot, London, UK.
   6 // Copyright (c) 2013-2014 Adam Wulkiewicz, Lodz, Poland.
   7
   8 // This file was modified by Oracle on 2013-2014.
   9 // Modifications copyright (c) 2013-2014, Oracle and/or its affiliates.
  10
  11 // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
  12 // Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
  13
  14 // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
  15 // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
  16
  17 // Use, modification and distribution is subject to the Boost Software License,
  18 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  19 // http://www.boost.org/LICENSE_1_0.txt)
  20
  21 #ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_DISJOINT_LINEAR_SEGMENT_OR_BOX_HPP
  22 #define BOOST_GEOMETRY_ALGORITHMS_DETAIL_DISJOINT_LINEAR_SEGMENT_OR_BOX_HPP
  23
  24 #include <boost/range.hpp>
  25 #include <boost/geometry/util/range.hpp>
  26
  27 #include <boost/geometry/core/closure.hpp>
  28
  29 #include <boost/geometry/geometries/segment.hpp>
  30
  31 #include <boost/geometry/algorithms/not_implemented.hpp>
  32
  33 #include <boost/geometry/views/closeable_view.hpp>
  34
  35 #include <boost/geometry/algorithms/detail/disjoint/multirange_geometry.hpp>
  36 #include <boost/geometry/algorithms/dispatch/disjoint.hpp>
  37
  38
  39 namespace boost { namespace geometry
  40 {
  41
  42
  43 #ifndef DOXYGEN_NO_DETAIL
  44 namespace detail { namespace disjoint
  45 {
  46
  47
  48 template
  49 <
  50     typename Range,
  51     closure_selector Closure,
  52     typename SegmentOrBox
  53 >
  54 struct disjoint_range_segment_or_box
  55 {
  56     static inline
  57     bool apply(Range const& range, SegmentOrBox const& segment_or_box)
  58     {
  59         typedef typename closeable_view<Range const, Closure>::type view_type;
  60
  61         typedef typename ::boost::range_value<view_type>::type point_type;
  62         typedef typename ::boost::range_iterator
  63             <
  64                 view_type const
  65             >::type const_iterator;
  66
  67         typedef typename ::boost::range_size<view_type>::type size_type;
  68
  69         typedef typename geometry::model::referring_segment
  70             <
  71                 point_type const
  72             > range_segment;
  73
  74         view_type view(range);
  75
  76         const size_type count = ::boost::size(view);
  77
  78         if ( count == 0 )
  79         {
  80             return false;
  81         }
  82         else if ( count == 1 )
  83         {
  84             return dispatch::disjoint
  85                 <
  86                     point_type, SegmentOrBox
  87                 >::apply(geometry::range::front<view_type const>(view),
  88                          segment_or_box);
  89         }
  90         else
  91         {
  92             const_iterator it0 = ::boost::begin(view);
  93             const_iterator it1 = ::boost::begin(view) + 1;
  94             const_iterator last = ::boost::end(view);
  95
  96             for ( ; it1 != last ; ++it0, ++it1 )
  97             {
  98                 range_segment rng_segment(*it0, *it1);
  99                 if ( !dispatch::disjoint
 100                          <
 101                              range_segment, SegmentOrBox
 102                          >::apply(rng_segment, segment_or_box) )
 103                 {
 104                     return false;
 105                 }
 106             }
 107             return true;
 108         }
 109     }
 110 };
 111
 112
 113
 114
 115 template
 116 <
 117     typename Linear,
 118     typename SegmentOrBox,
 119     typename Tag = typename tag<Linear>::type
 120 >
 121 struct disjoint_linear_segment_or_box
 122     : not_implemented<Linear, SegmentOrBox>
 123 {};
 124
 125
 126 template <typename Linestring, typename SegmentOrBox>
 127 struct disjoint_linear_segment_or_box<Linestring, SegmentOrBox, linestring_tag>
 128     : disjoint_range_segment_or_box<Linestring, closed, SegmentOrBox>
 129 {};
 130
 131
 132 template <typename MultiLinestring, typename SegmentOrBox>
 133 struct disjoint_linear_segment_or_box
 134     <
 135         MultiLinestring, SegmentOrBox, multi_linestring_tag
 136     > : multirange_constant_size_geometry<MultiLinestring, SegmentOrBox>
 137 {};
 138
 139
 140 }} // namespace detail::disjoint
 141 #endif // DOXYGEN_NO_DETAIL
 142
 143
 144 #ifndef DOXYGEN_NO_DISPATCH
 145 namespace dispatch
 146 {
 147
 148
 149 template <typename Linear, typename Segment>
 150 struct disjoint<Linear, Segment, 2, linear_tag, segment_tag, false>
 151     : detail::disjoint::disjoint_linear_segment_or_box<Linear, Segment>
 152 {};
 153
 154
 155 template <typename Linear, typename Box, std::size_t DimensionCount>
 156 struct disjoint<Linear, Box, DimensionCount, linear_tag, box_tag, false>
 157     : detail::disjoint::disjoint_linear_segment_or_box<Linear, Box>
 158 {};
 159
 160
 161 } // namespace dispatch
 162 #endif // DOXYGEN_NO_DISPATCH
 163
 164
 165 }} // namespace boost::geometry
 166
 167
 168 #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_DISJOINT_LINEAR_SEGMENT_OR_BOX_HPP