ceph/src/boost/boost/geometry/algorithms/detail/intersects/implementation.hpp

   1 // Boost.Geometry (aka GGL, Generic Geometry Library)
   2
   3 // Copyright (c) 2007-2014 Barend Gehrels, Amsterdam, the Netherlands.
   4 // Copyright (c) 2008-2014 Bruno Lalande, Paris, France.
   5 // Copyright (c) 2009-2014 Mateusz Loskot, London, UK.
   6
   7 // This file was modified by Oracle on 2013-2017.
   8 // Modifications copyright (c) 2013-2017, Oracle and/or its affiliates.
   9
  10 // Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
  11 // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
  12
  13 // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
  14 // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
  15
  16 // Use, modification and distribution is subject to the Boost Software License,
  17 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  18 // http://www.boost.org/LICENSE_1_0.txt)
  19
  20 #ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_INTERSECTS_IMPLEMENTATION_HPP
  21 #define BOOST_GEOMETRY_ALGORITHMS_DETAIL_INTERSECTS_IMPLEMENTATION_HPP
  22
  23
  24 #include <deque>
  25
  26 #include <boost/geometry/algorithms/detail/intersects/interface.hpp>
  27 #include <boost/geometry/algorithms/detail/disjoint/implementation.hpp>
  28
  29 #include <boost/geometry/algorithms/detail/overlay/self_turn_points.hpp>
  30 #include <boost/geometry/policies/disjoint_interrupt_policy.hpp>
  31 #include <boost/geometry/policies/robustness/no_rescale_policy.hpp>
  32 #include <boost/geometry/policies/robustness/segment_ratio_type.hpp>
  33
  34 #include <boost/geometry/strategies/relate.hpp>
  35
  36
  37 namespace boost { namespace geometry
  38 {
  39
  40 #ifndef DOXYGEN_NO_DETAIL
  41 namespace detail { namespace intersects
  42 {
  43
  44 template <typename Geometry>
  45 struct self_intersects
  46 {
  47     static bool apply(Geometry const& geometry)
  48     {
  49         concepts::check<Geometry const>();
  50
  51         typedef typename geometry::point_type<Geometry>::type point_type;
  52         typedef typename strategy::relate::services::default_strategy
  53                 <
  54                     Geometry, Geometry
  55                 >::type strategy_type;
  56         typedef detail::no_rescale_policy rescale_policy_type;
  57
  58         typedef detail::overlay::turn_info
  59             <
  60                 point_type,
  61                 typename segment_ratio_type<point_type, rescale_policy_type>::type
  62             > turn_info;
  63
  64         std::deque<turn_info> turns;
  65
  66         typedef detail::overlay::get_turn_info
  67             <
  68                 detail::overlay::assign_null_policy
  69             > turn_policy;
  70
  71         strategy_type strategy;
  72         rescale_policy_type robust_policy;
  73
  74         detail::disjoint::disjoint_interrupt_policy policy;
  75     // TODO: skip_adjacent should be set to false
  76         detail::self_get_turn_points::get_turns
  77             <
  78                 false, turn_policy
  79             >::apply(geometry, strategy, robust_policy, turns, policy, 0, true);
  80         return policy.has_intersections;
  81     }
  82 };
  83
  84 }} // namespace detail::intersects
  85 #endif // DOXYGEN_NO_DETAIL
  86
  87 }} // namespace boost::geometry
  88
  89 #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_INTERSECTS_IMPLEMENTATION_HPP