// Boost.Polygon library voronoi_geometry_type.hpp header file

//          Copyright Andrii Sydorchuk 2010-2012.

// Distributed under the Boost Software License, Version 1.0.

//    (See accompanying file LICENSE_1_0.txt or copy at

//          http://www.boost.org/LICENSE_1_0.txt)

// See http://www.boost.org for updates, documentation, and revision history.

#ifndef BOOST_POLYGON_VORONOI_GEOMETRY_TYPE

#define BOOST_POLYGON_VORONOI_GEOMETRY_TYPE

#include <cstddef>

namespace boost {

namespace polygon {

// Represents topology type of the voronoi site.

enum GeometryCategory {

  GEOMETRY_CATEGORY_POINT = 0x0,

  GEOMETRY_CATEGORY_SEGMENT = 0x1

};

// Represents category of the input source that forms Voronoi cell.

enum SourceCategory {

  // Point subtypes.

  SOURCE_CATEGORY_SINGLE_POINT = 0x0,

  SOURCE_CATEGORY_SEGMENT_START_POINT = 0x1,

  SOURCE_CATEGORY_SEGMENT_END_POINT = 0x2,

  // Segment subtypes.

  SOURCE_CATEGORY_INITIAL_SEGMENT = 0x8,

  SOURCE_CATEGORY_REVERSE_SEGMENT = 0x9,

  SOURCE_CATEGORY_GEOMETRY_SHIFT = 0x3,

  SOURCE_CATEGORY_BITMASK = 0x1F

};

inline bool belongs(

    SourceCategory source_category,

    GeometryCategory geometry_category) {

  return (static_cast<std::size_t>(source_category) >>

              SOURCE_CATEGORY_GEOMETRY_SHIFT) ==

         static_cast<std::size_t>(geometry_category);

}

}  // polygon

}  // boost

#endif  // BOOST_POLYGON_VORONOI_GEOMETRY_TYPE