ceph/src/boost/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             : piece_index != other.piece_index ? piece_index < other.piece_index
  61             : segment_index < other.segment_index
  62             ;
  63     }
  64
  65     inline bool operator==(segment_identifier const& other) const
  66     {
  67         return source_index == other.source_index
  68             && segment_index == other.segment_index
  69             && ring_index == other.ring_index
  70             && piece_index == other.piece_index
  71             && multi_index == other.multi_index
  72             ;
  73     }
  74
  75 #if defined(BOOST_GEOMETRY_DEBUG_SEGMENT_IDENTIFIER)
  76     friend std::ostream& operator<<(std::ostream &os, segment_identifier const& seg_id)
  77     {
  78         os
  79             << "s:" << seg_id.source_index
  80             << ", v:" << seg_id.segment_index // v:vertex because s is used for source
  81             ;
  82         if (seg_id.ring_index >= 0) os << ", r:" << seg_id.ring_index;
  83         if (seg_id.multi_index >= 0) os << ", m:" << seg_id.multi_index;
  84         if (seg_id.piece_index >= 0) os << ", p:" << seg_id.piece_index;
  85         return os;
  86     }
  87 #endif
  88
  89     signed_size_type source_index;
  90     signed_size_type multi_index;
  91     signed_size_type ring_index;
  92     signed_size_type segment_index;
  93
  94     // For buffer - todo: move this to buffer-only
  95     signed_size_type piece_index;
  96 };
  97
  98
  99
 100 }} // namespace boost::geometry
 101
 102 #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_OVERLAY_SEGMENT_IDENTIFIER_HPP