| // Boost.Geometry (aka GGL, Generic Geometry Library) |
| |
| // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands. |
| // Copyright (c) 2008-2012 Bruno Lalande, Paris, France. |
| // Copyright (c) 2009-2012 Mateusz Loskot, London, UK. |
| // Copyright (c) 2014 Adam Wulkiewicz, Lodz, Poland. |
| |
| // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library |
| // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands. |
| |
| // Use, modification and distribution is subject to the Boost Software License, |
| // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
| // http://www.boost.org/LICENSE_1_0.txt) |
| |
| #ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_CALCULATE_SUM_HPP |
| #define BOOST_GEOMETRY_ALGORITHMS_DETAIL_CALCULATE_SUM_HPP |
| |
| #include <boost/range.hpp> |
| |
| namespace boost { namespace geometry |
| { |
| |
| #ifndef DOXYGEN_NO_DETAIL |
| namespace detail |
| { |
| |
| |
| class calculate_polygon_sum |
| { |
| template <typename ReturnType, typename Policy, typename Rings, typename Strategy> |
| static inline ReturnType sum_interior_rings(Rings const& rings, Strategy const& strategy) |
| { |
| ReturnType sum = ReturnType(); |
| for (typename boost::range_iterator<Rings const>::type |
| it = boost::begin(rings); it != boost::end(rings); ++it) |
| { |
| sum += Policy::apply(*it, strategy); |
| } |
| return sum; |
| } |
| |
| public : |
| template <typename ReturnType, typename Policy, typename Polygon, typename Strategy> |
| static inline ReturnType apply(Polygon const& poly, Strategy const& strategy) |
| { |
| return Policy::apply(exterior_ring(poly), strategy) |
| + sum_interior_rings<ReturnType, Policy>(interior_rings(poly), strategy) |
| ; |
| } |
| }; |
| |
| |
| } // namespace detail |
| #endif // DOXYGEN_NO_DETAIL |
| |
| }} // namespace boost::geometry |
| |
| #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_CALCULATE_SUM_HPP |