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// 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
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