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>
sum_interior_rings(Rings const & rings,Strategy const & 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>
apply(Polygon const & poly,Strategy const & 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
63