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Diffstat (limited to 'boost/geometry/algorithms/detail/counting.hpp')
-rw-r--r-- | boost/geometry/algorithms/detail/counting.hpp | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/boost/geometry/algorithms/detail/counting.hpp b/boost/geometry/algorithms/detail/counting.hpp new file mode 100644 index 0000000000..dc5bb26c10 --- /dev/null +++ b/boost/geometry/algorithms/detail/counting.hpp @@ -0,0 +1,107 @@ +// Boost.Geometry (aka GGL, Generic Geometry Library) + +// Copyright (c) 2007-2014 Barend Gehrels, Amsterdam, the Netherlands. +// Copyright (c) 2008-2014 Bruno Lalande, Paris, France. +// Copyright (c) 2009-2014 Mateusz Loskot, London, UK. +// Copyright (c) 2014 Adam Wulkiewicz, Lodz, Poland. + +// This file was modified by Oracle on 2014. +// Modifications copyright (c) 2014, Oracle and/or its affiliates. + +// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle + +// 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_COUNTING_HPP +#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_COUNTING_HPP + +#include <cstddef> + +#include <boost/range.hpp> + +#include <boost/geometry/core/exterior_ring.hpp> +#include <boost/geometry/core/interior_rings.hpp> + +#include <boost/geometry/util/range.hpp> + +#include <boost/geometry/algorithms/detail/interior_iterator.hpp> + + +namespace boost { namespace geometry +{ + + +#ifndef DOXYGEN_NO_DETAIL +namespace detail { namespace counting +{ + + +template <std::size_t D> +struct other_count +{ + template <typename Geometry> + static inline std::size_t apply(Geometry const&) + { + return D; + } + + template <typename Geometry> + static inline std::size_t apply(Geometry const&, bool) + { + return D; + } +}; + + +template <typename RangeCount> +struct polygon_count +{ + template <typename Polygon> + static inline std::size_t apply(Polygon const& poly) + { + std::size_t n = RangeCount::apply(exterior_ring(poly)); + + typename interior_return_type<Polygon const>::type + rings = interior_rings(poly); + for (typename detail::interior_iterator<Polygon const>::type + it = boost::begin(rings); it != boost::end(rings); ++it) + { + n += RangeCount::apply(*it); + } + + return n; + } +}; + + +template <typename SingleCount> +struct multi_count +{ + template <typename MultiGeometry> + static inline std::size_t apply(MultiGeometry const& geometry) + { + std::size_t n = 0; + for (typename boost::range_iterator<MultiGeometry const>::type + it = boost::begin(geometry); + it != boost::end(geometry); + ++it) + { + n += SingleCount::apply(*it); + } + return n; + } +}; + + +}} // namespace detail::counting +#endif // DOXYGEN_NO_DETAIL + +}} // namespace boost::geometry + + +#endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_COUNTING_HPP |