Chris@16: // Boost.Geometry (aka GGL, Generic Geometry Library)
Chris@16: 
Chris@16: // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
Chris@16: // Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
Chris@16: // Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
Chris@101: // Copyright (c) 2014 Adam Wulkiewicz, Lodz, Poland.
Chris@16: 
Chris@16: // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
Chris@16: // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
Chris@16: 
Chris@16: // Use, modification and distribution is subject to the Boost Software License,
Chris@16: // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: 
Chris@16: #ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_CALCULATE_SUM_HPP
Chris@16: #define BOOST_GEOMETRY_ALGORITHMS_DETAIL_CALCULATE_SUM_HPP
Chris@16: 
Chris@16: #include <boost/range.hpp>
Chris@16: 
Chris@16: namespace boost { namespace geometry
Chris@16: {
Chris@16: 
Chris@16: #ifndef DOXYGEN_NO_DETAIL
Chris@16: namespace detail
Chris@16: {
Chris@16: 
Chris@16: 
Chris@16: class calculate_polygon_sum
Chris@16: {
Chris@16:     template <typename ReturnType, typename Policy, typename Rings, typename Strategy>
Chris@16:     static inline ReturnType sum_interior_rings(Rings const& rings, Strategy const& strategy)
Chris@16:     {
Chris@16:         ReturnType sum = ReturnType();
Chris@101:         for (typename boost::range_iterator<Rings const>::type
Chris@101:                 it = boost::begin(rings); it != boost::end(rings); ++it)
Chris@16:         {
Chris@16:             sum += Policy::apply(*it, strategy);
Chris@16:         }
Chris@16:         return sum;
Chris@16:     }
Chris@16: 
Chris@16: public :
Chris@16:     template <typename ReturnType, typename Policy, typename Polygon, typename Strategy>
Chris@16:     static inline ReturnType apply(Polygon const& poly, Strategy const& strategy)
Chris@16:     {
Chris@16:         return Policy::apply(exterior_ring(poly), strategy)
Chris@16:             + sum_interior_rings<ReturnType, Policy>(interior_rings(poly), strategy)
Chris@16:             ;
Chris@16:     }
Chris@16: };
Chris@16: 
Chris@16: 
Chris@16: } // namespace detail
Chris@16: #endif // DOXYGEN_NO_DETAIL
Chris@16: 
Chris@16: }} // namespace boost::geometry
Chris@16: 
Chris@16: #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_CALCULATE_SUM_HPP