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boost/geometry/util/is_inverse_spheroidal_coordinates.hpp

// Boost.Geometry

// Copyright (c) 2018 Oracle and/or its affiliates.

// Contributed and/or modified by Vissarion Fysikopoulos, on behalf of Oracle
// 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_UTIL_IS_INVERSE_SPHEROIDAL_COORDINATES_HPP
#define BOOST_GEOMETRY_UTIL_IS_INVERSE_SPHEROIDAL_COORDINATES_HPP

#include <boost/geometry/core/access.hpp>
#include <boost/geometry/core/coordinate_type.hpp>
#include <boost/geometry/core/point_type.hpp>

#include <boost/geometry/util/bounds.hpp>
#include <boost/geometry/util/math.hpp>

namespace boost { namespace geometry
{

template <typename Box>
bool is_inverse_spheroidal_coordinates(Box const& box)
{
    using point_type = point_type_t<Box>;
    using bound_type = coordinate_type_t<point_type>;

    bound_type const high = util::bounds<bound_type>::highest();
    bound_type const low = util::bounds<bound_type>::lowest();

    return (geometry::get<0, 0>(box) == high) &&
           (geometry::get<0, 1>(box) == high) &&
           (geometry::get<1, 0>(box) == low) &&
           (geometry::get<1, 1>(box) == low);
}

}} // namespace boost::geometry

#endif // BOOST_GEOMETRY_UTIL_IS_INVERSE_SPHEROIDAL_COORDINATES_HPP