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64 lines
1.7 KiB
64 lines
1.7 KiB
// Boost.Geometry (aka GGL, Generic Geometry Library) |
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// Copyright (c) 2007-2011 Barend Gehrels, Amsterdam, the Netherlands. |
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// Copyright (c) 2008-2011 Bruno Lalande, Paris, France. |
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// Copyright (c) 2009-2011 Mateusz Loskot, London, UK. |
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// Parts of Boost.Geometry are redesigned from Geodan's Geographic Library |
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// (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands. |
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// Use, modification and distribution is subject to the Boost Software License, |
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
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// http://www.boost.org/LICENSE_1_0.txt) |
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#ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_CALCULATE_SUM_HPP |
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#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_CALCULATE_SUM_HPP |
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#include <boost/range.hpp> |
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#include <boost/typeof/typeof.hpp> |
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namespace boost { namespace geometry |
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{ |
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#ifndef DOXYGEN_NO_DETAIL |
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namespace detail |
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{ |
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template |
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< |
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typename ReturnType, |
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typename Polygon, |
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typename Strategy, |
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typename Policy |
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> |
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class calculate_polygon_sum |
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{ |
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template <typename Rings> |
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static inline ReturnType sum_interior_rings(Rings const& rings, Strategy const& strategy) |
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{ |
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ReturnType sum = ReturnType(); |
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for (BOOST_AUTO_TPL(it, boost::begin(rings)); it != boost::end(rings); ++it) |
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{ |
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sum += Policy::apply(*it, strategy); |
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} |
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return sum; |
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} |
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public : |
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static inline ReturnType apply(Polygon const& poly, Strategy const& strategy) |
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{ |
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return Policy::apply(exterior_ring(poly), strategy) |
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+ sum_interior_rings(interior_rings(poly), strategy) |
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; |
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} |
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}; |
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} // namespace detail |
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#endif // DOXYGEN_NO_DETAIL |
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}} // namespace boost::geometry |
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#endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_CALCULATE_SUM_HPP
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