ceph/src/boost/libs/geometry/include/boost/geometry/algorithms/detail/is_simple/multipoint.hpp

   1 // Boost.Geometry (aka GGL, Generic Geometry Library)
   2
   3 // Copyright (c) 2014-2015, Oracle and/or its affiliates.
   4
   5 // Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
   6
   7 // Licensed under the Boost Software License version 1.0.
   8 // http://www.boost.org/users/license.html
   9
  10 #ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_IS_SIMPLE_MULTIPOINT_HPP
  11 #define BOOST_GEOMETRY_ALGORITHMS_DETAIL_IS_SIMPLE_MULTIPOINT_HPP
  12
  13 #include <algorithm>
  14
  15 #include <boost/range.hpp>
  16
  17 #include <boost/geometry/core/closure.hpp>
  18 #include <boost/geometry/core/tags.hpp>
  19 #include <boost/geometry/core/tags.hpp>
  20
  21 #include <boost/geometry/policies/compare.hpp>
  22
  23 #include <boost/geometry/algorithms/detail/is_valid/has_duplicates.hpp>
  24 #include <boost/geometry/algorithms/detail/is_simple/failure_policy.hpp>
  25
  26 #include <boost/geometry/algorithms/dispatch/is_simple.hpp>
  27
  28
  29 namespace boost { namespace geometry
  30 {
  31
  32
  33 #ifndef DOXYGEN_NO_DETAIL
  34 namespace detail { namespace is_simple
  35 {
  36
  37
  38 template <typename MultiPoint>
  39 struct is_simple_multipoint
  40 {
  41     static inline bool apply(MultiPoint const& multipoint)
  42     {
  43         if (boost::empty(multipoint))
  44         {
  45             return true;
  46         }
  47
  48         MultiPoint mp(multipoint);
  49         std::sort(boost::begin(mp), boost::end(mp),
  50                   geometry::less<typename point_type<MultiPoint>::type>());
  51
  52         simplicity_failure_policy policy;
  53         return !detail::is_valid::has_duplicates
  54             <
  55                 MultiPoint, closed
  56             >::apply(mp, policy);
  57     }
  58 };
  59
  60
  61 }} // namespace detail::is_simple
  62 #endif // DOXYGEN_NO_DETAIL
  63
  64
  65
  66
  67 #ifndef DOXYGEN_NO_DISPATCH
  68 namespace dispatch
  69 {
  70
  71
  72 // A MultiPoint is simple if no two Points in the MultiPoint are equal
  73 // (have identical coordinate values in X and Y)
  74 //
  75 // Reference: OGC 06-103r4 (6.1.5)
  76 template <typename MultiPoint>
  77 struct is_simple<MultiPoint, multi_point_tag>
  78     : detail::is_simple::is_simple_multipoint<MultiPoint>
  79 {};
  80
  81
  82 } // namespace dispatch
  83 #endif // DOXYGEN_NO_DISPATCH
  84
  85
  86 }} // namespace boost::geometry
  87
  88
  89 #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_IS_SIMPLE_MULTIPOINT_HPP