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// Boost.Geometry (aka GGL, Generic Geometry Library)
// Copyright (c) 2007-2015 Barend Gehrels, Amsterdam, the Netherlands.
// Copyright (c) 2008-2015 Bruno Lalande, Paris, France.
// Copyright (c) 2009-2015 Mateusz Loskot, London, UK.
// This file was modified by Oracle on 2015, 2016, 2017.
// Modifications copyright (c) 2015-2016, Oracle and/or its affiliates.
// Contributed and/or modified by Vissarion Fysikopoulos, on behalf of Oracle
// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
// Distributed under 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_ENVELOPE_POINT_HPP
#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_ENVELOPE_POINT_HPP
#include <cstddef>
#include <boost/geometry/core/access.hpp>
#include <boost/geometry/core/cs.hpp>
#include <boost/geometry/core/coordinate_dimension.hpp>
#include <boost/geometry/core/coordinate_system.hpp>
#include <boost/geometry/core/tags.hpp>
#include <boost/geometry/views/detail/indexed_point_view.hpp>
#include <boost/geometry/algorithms/detail/convert_point_to_point.hpp>
#include <boost/geometry/algorithms/detail/normalize.hpp>
#include <boost/geometry/algorithms/detail/envelope/transform_units.hpp>
#include <boost/geometry/algorithms/dispatch/envelope.hpp>
namespace boost { namespace geometry
{
#ifndef DOXYGEN_NO_DETAIL
namespace detail { namespace envelope
{
template <std::size_t Dimension, std::size_t DimensionCount>
struct envelope_one_point
{
template <std::size_t Index, typename Point, typename Box>
static inline void apply(Point const& point, Box& mbr)
{
detail::indexed_point_view<Box, Index> box_corner(mbr);
detail::conversion::point_to_point
<
Point,
detail::indexed_point_view<Box, Index>,
Dimension,
DimensionCount
>::apply(point, box_corner);
}
template <typename Point, typename Box, typename Strategy>
static inline void apply(Point const& point, Box& mbr, Strategy const&)
{
apply<min_corner>(point, mbr);
apply<max_corner>(point, mbr);
}
};
struct envelope_point_on_spheroid
{
template<typename Point, typename Box, typename Strategy>
static inline void apply(Point const& point, Box& mbr, Strategy const& strategy)
{
Point normalized_point = detail::return_normalized<Point>(point);
typename point_type<Box>::type box_point;
// transform units of input point to units of a box point
transform_units(normalized_point, box_point);
geometry::set<min_corner, 0>(mbr, geometry::get<0>(box_point));
geometry::set<min_corner, 1>(mbr, geometry::get<1>(box_point));
geometry::set<max_corner, 0>(mbr, geometry::get<0>(box_point));
geometry::set<max_corner, 1>(mbr, geometry::get<1>(box_point));
envelope_one_point
<
2, dimension<Point>::value
>::apply(normalized_point, mbr, strategy);
}
};
}} // namespace detail::envelope
#endif // DOXYGEN_NO_DETAIL
#ifndef DOXYGEN_NO_DISPATCH
namespace dispatch
{
template <typename Point>
struct envelope<Point, point_tag, cartesian_tag>
: detail::envelope::envelope_one_point<0, dimension<Point>::value>
{};
template <typename Point>
struct envelope<Point, point_tag, spherical_polar_tag>
: detail::envelope::envelope_point_on_spheroid
{};
template <typename Point>
struct envelope<Point, point_tag, spherical_equatorial_tag>
: detail::envelope::envelope_point_on_spheroid
{};
template <typename Point>
struct envelope<Point, point_tag, geographic_tag>
: detail::envelope::envelope_point_on_spheroid
{};
} // namespace dispatch
#endif // DOXYGEN_NO_DISPATCH
}} // namespace boost::geometry
#endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_ENVELOPE_POINT_HPP
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