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