ceph/src/boost/boost/geometry/algorithms/detail/calculate_sum.hpp

   1 // Boost.Geometry (aka GGL, Generic Geometry Library)
   2
   3 // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
   4 // Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
   5 // Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
   6 // Copyright (c) 2014 Adam Wulkiewicz, Lodz, Poland.
   7
   8 // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
   9 // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
  10
  11 // This file was modified by Oracle on 2016.
  12 // Modifications copyright (c) 2016 Oracle and/or its affiliates.
  13 // Contributed and/or modified by Vissarion Fysikopoulos, on behalf of Oracle
  14
  15 // Use, modification and distribution is subject to the Boost Software License,
  16 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  17 // http://www.boost.org/LICENSE_1_0.txt)
  18
  19 #ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_CALCULATE_SUM_HPP
  20 #define BOOST_GEOMETRY_ALGORITHMS_DETAIL_CALCULATE_SUM_HPP
  21
  22 #include <boost/range.hpp>
  23
  24 namespace boost { namespace geometry
  25 {
  26
  27 #ifndef DOXYGEN_NO_DETAIL
  28 namespace detail
  29 {
  30
  31
  32 class calculate_polygon_sum
  33 {
  34     template <typename ReturnType, typename Policy, typename Rings, typename Strategy>
  35     static inline ReturnType sum_interior_rings(Rings const& rings, Strategy const& strategy)
  36     {
  37         ReturnType sum = ReturnType(0);
  38         for (typename boost::range_iterator<Rings const>::type
  39                 it = boost::begin(rings); it != boost::end(rings); ++it)
  40         {
  41             sum += Policy::apply(*it, strategy);
  42         }
  43         return sum;
  44     }
  45
  46 public :
  47     template <typename ReturnType, typename Policy, typename Polygon, typename Strategy>
  48     static inline ReturnType apply(Polygon const& poly, Strategy const& strategy)
  49     {
  50         return Policy::apply(exterior_ring(poly), strategy)
  51             + sum_interior_rings<ReturnType, Policy>(interior_rings(poly), strategy)
  52             ;
  53     }
  54 };
  55
  56
  57 } // namespace detail
  58 #endif // DOXYGEN_NO_DETAIL
  59
  60 }} // namespace boost::geometry
  61
  62 #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_CALCULATE_SUM_HPP