// Boost.Geometry (aka GGL, Generic Geometry Library)
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// Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
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// Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
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// Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
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// This file was modified by Oracle on 2020.
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// Modifications copyright (c) 2020 Oracle and/or its affiliates.
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// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
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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_AS_RANGE_HPP
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#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_AS_RANGE_HPP
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#include <boost/geometry/core/exterior_ring.hpp>
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#include <boost/geometry/core/tag.hpp>
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#include <boost/geometry/core/tags.hpp>
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namespace boost { namespace geometry
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{
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#ifndef DOXYGEN_NO_DISPATCH
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namespace dispatch
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{
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template <typename GeometryTag, typename Geometry, typename Range>
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struct as_range
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{
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static inline Range& get(Geometry& input)
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{
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return input;
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}
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};
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template <typename Geometry, typename Range>
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struct as_range<polygon_tag, Geometry, Range>
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{
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static inline Range& get(Geometry& input)
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{
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return exterior_ring(input);
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}
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};
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} // namespace dispatch
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#endif // DOXYGEN_NO_DISPATCH
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// Will probably be replaced by the more generic "view_as", therefore in detail
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namespace detail
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{
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/*!
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\brief Function getting either the range (ring, linestring) itself
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or the outer ring (polygon)
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\details Utility to handle polygon's outer ring as a range
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\ingroup utility
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*/
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template <typename Range, typename Geometry>
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inline Range& as_range(Geometry& input)
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{
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return dispatch::as_range
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<
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typename tag<Geometry>::type,
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Geometry,
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Range
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>::get(input);
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}
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/*!
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\brief Function getting either the range (ring, linestring) itself
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or the outer ring (polygon), const version
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\details Utility to handle polygon's outer ring as a range
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\ingroup utility
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*/
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template <typename Range, typename Geometry>
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inline Range const& as_range(Geometry const& input)
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{
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return dispatch::as_range
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<
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typename tag<Geometry>::type,
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Geometry const,
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Range const
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>::get(input);
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}
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}
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}} // namespace boost::geometry
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#endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_AS_RANGE_HPP
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