ceph/src/boost/boost/polygon/voronoi_geometry_type.hpp

   1 // Boost.Polygon library voronoi_geometry_type.hpp header file
   2
   3 //          Copyright Andrii Sydorchuk 2010-2012.
   4 // Distributed under the Boost Software License, Version 1.0.
   5 //    (See accompanying file LICENSE_1_0.txt or copy at
   6 //          http://www.boost.org/LICENSE_1_0.txt)
   7
   8 // See http://www.boost.org for updates, documentation, and revision history.
   9
  10 #ifndef BOOST_POLYGON_VORONOI_GEOMETRY_TYPE
  11 #define BOOST_POLYGON_VORONOI_GEOMETRY_TYPE
  12
  13 #include <cstddef>
  14
  15 namespace boost {
  16 namespace polygon {
  17 // Represents topology type of the voronoi site.
  18 enum GeometryCategory {
  19   GEOMETRY_CATEGORY_POINT = 0x0,
  20   GEOMETRY_CATEGORY_SEGMENT = 0x1
  21 };
  22
  23 // Represents category of the input source that forms Voronoi cell.
  24 enum SourceCategory {
  25   // Point subtypes.
  26   SOURCE_CATEGORY_SINGLE_POINT = 0x0,
  27   SOURCE_CATEGORY_SEGMENT_START_POINT = 0x1,
  28   SOURCE_CATEGORY_SEGMENT_END_POINT = 0x2,
  29
  30   // Segment subtypes.
  31   SOURCE_CATEGORY_INITIAL_SEGMENT = 0x8,
  32   SOURCE_CATEGORY_REVERSE_SEGMENT = 0x9,
  33
  34   SOURCE_CATEGORY_GEOMETRY_SHIFT = 0x3,
  35   SOURCE_CATEGORY_BITMASK = 0x1F
  36 };
  37
  38 inline bool belongs(
  39     SourceCategory source_category,
  40     GeometryCategory geometry_category) {
  41   return (static_cast<std::size_t>(source_category) >>
  42               SOURCE_CATEGORY_GEOMETRY_SHIFT) ==
  43          static_cast<std::size_t>(geometry_category);
  44 }
  45 }  // polygon
  46 }  // boost
  47
  48 #endif  // BOOST_POLYGON_VORONOI_GEOMETRY_TYPE