// Boost.Geometry (aka GGL, Generic Geometry Library)
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// Copyright (c) 2014 Barend Gehrels, Amsterdam, the Netherlands.
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// Copyright (c) 2014 Bruno Lalande, Paris, France.
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// Copyright (c) 2014 Mateusz Loskot, London, UK.
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// Copyright (c) 2014 Adam Wulkiewicz, Lodz, Poland.
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// This file was modified by Oracle on 2018.
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// Modifications copyright (c) 2018, Oracle and/or its affiliates.
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// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
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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_GET_MAX_SIZE_HPP
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#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_GET_MAX_SIZE_HPP
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#include <cstddef>
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#include <boost/geometry/core/access.hpp>
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#include <boost/geometry/core/coordinate_dimension.hpp>
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#include <boost/geometry/util/math.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 <typename Box, std::size_t Dimension>
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struct get_max_size_box
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{
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static inline typename coordinate_type<Box>::type apply(Box const& box)
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{
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typename coordinate_type<Box>::type s
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= geometry::math::abs(geometry::get<1, Dimension>(box) - geometry::get<0, Dimension>(box));
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return (std::max)(s, get_max_size_box<Box, Dimension - 1>::apply(box));
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}
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};
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template <typename Box>
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struct get_max_size_box<Box, 0>
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{
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static inline typename coordinate_type<Box>::type apply(Box const& box)
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{
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return geometry::math::abs(geometry::get<1, 0>(box) - geometry::get<0, 0>(box));
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}
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};
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// This might be implemented later on for other geometries too.
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// Not dispatched yet.
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template <typename Box>
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inline typename coordinate_type<Box>::type get_max_size(Box const& box)
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{
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return get_max_size_box<Box, dimension<Box>::value - 1>::apply(box);
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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_GET_MAX_SIZE_HPP
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