ceph/src/boost/boost/geometry/strategies/cartesian/expand_point.hpp

   1 // Boost.Geometry (aka GGL, Generic Geometry Library)
   2
   3 // Copyright (c) 2007-2015 Barend Gehrels, Amsterdam, the Netherlands.
   4 // Copyright (c) 2008-2015 Bruno Lalande, Paris, France.
   5 // Copyright (c) 2009-2015 Mateusz Loskot, London, UK.
   6 // Copyright (c) 2014-2015 Samuel Debionne, Grenoble, France.
   7
   8 // This file was modified by Oracle on 2015-2018.
   9 // Modifications copyright (c) 2015-2018, Oracle and/or its affiliates.
  10
  11 // Contributed and/or modified by Vissarion Fysikopoulos, on behalf of Oracle
  12 // Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
  13 // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
  14
  15 // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
  16 // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
  17
  18 // Distributed under the Boost Software License, Version 1.0.
  19 // (See accompanying file LICENSE_1_0.txt or copy at
  20 // http://www.boost.org/LICENSE_1_0.txt)
  21
  22 #ifndef BOOST_GEOMETRY_STRATEGIES_CARTESIAN_EXPAND_POINT_HPP
  23 #define BOOST_GEOMETRY_STRATEGIES_CARTESIAN_EXPAND_POINT_HPP
  24
  25 #include <cstddef>
  26 #include <functional>
  27
  28 #include <boost/geometry/core/access.hpp>
  29 #include <boost/geometry/core/coordinate_dimension.hpp>
  30 #include <boost/geometry/core/coordinate_system.hpp>
  31 #include <boost/geometry/core/coordinate_type.hpp>
  32 #include <boost/geometry/core/tags.hpp>
  33
  34 #include <boost/geometry/util/select_coordinate_type.hpp>
  35
  36 #include <boost/geometry/strategies/expand.hpp>
  37
  38 namespace boost { namespace geometry
  39 {
  40
  41 namespace strategy { namespace expand
  42 {
  43
  44 #ifndef DOXYGEN_NO_DETAIL
  45 namespace detail
  46 {
  47
  48 template <std::size_t Dimension, std::size_t DimensionCount>
  49 struct point_loop
  50 {
  51     template <typename Box, typename Point>
  52     static inline void apply(Box& box, Point const& source)
  53     {
  54         typedef typename select_coordinate_type
  55             <
  56                 Point, Box
  57             >::type coordinate_type;
  58
  59         std::less<coordinate_type> less;
  60         std::greater<coordinate_type> greater;
  61
  62         coordinate_type const coord = get<Dimension>(source);
  63
  64         if (less(coord, get<min_corner, Dimension>(box)))
  65         {
  66             set<min_corner, Dimension>(box, coord);
  67         }
  68
  69         if (greater(coord, get<max_corner, Dimension>(box)))
  70         {
  71             set<max_corner, Dimension>(box, coord);
  72         }
  73
  74         point_loop<Dimension + 1, DimensionCount>::apply(box, source);
  75     }
  76 };
  77
  78
  79 template <std::size_t DimensionCount>
  80 struct point_loop<DimensionCount, DimensionCount>
  81 {
  82     template <typename Box, typename Point>
  83     static inline void apply(Box&, Point const&) {}
  84 };
  85
  86
  87 } // namespace detail
  88 #endif // DOXYGEN_NO_DETAIL
  89
  90
  91 struct cartesian_point
  92 {
  93     template <typename Box, typename Point>
  94     static void apply(Box & box, Point const& point)
  95     {
  96         expand::detail::point_loop
  97             <
  98                 0, dimension<Point>::value
  99             >::apply(box, point);
 100     }
 101 };
 102
 103
 104 #ifndef DOXYGEN_NO_STRATEGY_SPECIALIZATIONS
 105
 106 namespace services
 107 {
 108
 109 template <typename CalculationType>
 110 struct default_strategy<point_tag, cartesian_tag, CalculationType>
 111 {
 112     typedef cartesian_point type;
 113 };
 114
 115
 116 } // namespace services
 117
 118 #endif // DOXYGEN_NO_STRATEGY_SPECIALIZATIONS
 119
 120
 121 }} // namespace strategy::expand
 122
 123 }} // namespace boost::geometry
 124
 125 #endif // BOOST_GEOMETRY_STRATEGIES_CARTESIAN_EXPAND_POINT_HPP