ceph/src/boost/libs/geometry/include/boost/geometry/algorithms/detail/overlay/segment_identifier.hpp

   1 // Boost.Geometry (aka GGL, Generic Geometry Library)
   2
   3 // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
   4
   5 // Use, modification and distribution is subject to the Boost Software License,
   6 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   7 // http://www.boost.org/LICENSE_1_0.txt)
   8
   9 #ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_OVERLAY_SEGMENT_IDENTIFIER_HPP
  10 #define BOOST_GEOMETRY_ALGORITHMS_DETAIL_OVERLAY_SEGMENT_IDENTIFIER_HPP
  11
  12
  13 #if defined(BOOST_GEOMETRY_DEBUG_OVERLAY)
  14 #  define BOOST_GEOMETRY_DEBUG_SEGMENT_IDENTIFIER
  15 #endif
  16
  17 #if defined(BOOST_GEOMETRY_DEBUG_SEGMENT_IDENTIFIER)
  18 #include <iostream>
  19 #endif
  20
  21
  22 #include <boost/geometry/algorithms/detail/signed_size_type.hpp>
  23
  24
  25 namespace boost { namespace geometry
  26 {
  27
  28
  29
  30 // Internal struct to uniquely identify a segment
  31 // on a linestring,ring
  32 // or polygon (needs ring_index)
  33 // or multi-geometry (needs multi_index)
  34 struct segment_identifier
  35 {
  36     inline segment_identifier()
  37         : source_index(-1)
  38         , multi_index(-1)
  39         , ring_index(-1)
  40         , segment_index(-1)
  41         , piece_index(-1)
  42     {}
  43
  44     inline segment_identifier(signed_size_type src,
  45                               signed_size_type mul,
  46                               signed_size_type rin,
  47                               signed_size_type seg)
  48         : source_index(src)
  49         , multi_index(mul)
  50         , ring_index(rin)
  51         , segment_index(seg)
  52         , piece_index(-1)
  53     {}
  54
  55     inline bool operator<(segment_identifier const& other) const
  56     {
  57         return source_index != other.source_index ? source_index < other.source_index
  58             : multi_index !=other.multi_index ? multi_index < other.multi_index
  59             : ring_index != other.ring_index ? ring_index < other.ring_index
  60             : segment_index < other.segment_index
  61             ;
  62     }
  63
  64     inline bool operator==(segment_identifier const& other) const
  65     {
  66         return source_index == other.source_index
  67             && segment_index == other.segment_index
  68             && ring_index == other.ring_index
  69             && multi_index == other.multi_index
  70             ;
  71     }
  72
  73 #if defined(BOOST_GEOMETRY_DEBUG_SEGMENT_IDENTIFIER)
  74     friend std::ostream& operator<<(std::ostream &os, segment_identifier const& seg_id)
  75     {
  76         os
  77             << "s:" << seg_id.source_index
  78             << ", v:" << seg_id.segment_index // v:vertex because s is used for source
  79             ;
  80         if (seg_id.ring_index >= 0) os << ", r:" << seg_id.ring_index;
  81         if (seg_id.multi_index >= 0) os << ", m:" << seg_id.multi_index;
  82         return os;
  83     }
  84 #endif
  85
  86     signed_size_type source_index;
  87     signed_size_type multi_index;
  88     signed_size_type ring_index;
  89     signed_size_type segment_index;
  90
  91     // For buffer - todo: move this to buffer-only
  92     signed_size_type piece_index;
  93 };
  94
  95
  96
  97 }} // namespace boost::geometry
  98
  99 #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_OVERLAY_SEGMENT_IDENTIFIER_HPP