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// Boost.Geometry (aka GGL, Generic Geometry Library)
// Copyright (c) 2015-2022, Oracle and/or its affiliates.
// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
// Licensed under the Boost Software License version 1.0.
// http://www.boost.org/users/license.html
#ifndef BOOST_GEOMETRY_GEOMETRIES_HELPER_GEOMETRY_HPP
#define BOOST_GEOMETRY_GEOMETRIES_HELPER_GEOMETRY_HPP
#include <boost/geometry/core/closure.hpp>
#include <boost/geometry/core/coordinate_dimension.hpp>
#include <boost/geometry/core/coordinate_type.hpp>
#include <boost/geometry/core/cs.hpp>
#include <boost/geometry/core/point_order.hpp>
#include <boost/geometry/core/point_type.hpp>
#include <boost/geometry/core/tag.hpp>
#include <boost/geometry/core/tags.hpp>
#include <boost/geometry/geometries/box.hpp>
#include <boost/geometry/geometries/linestring.hpp>
#include <boost/geometry/geometries/point.hpp>
#include <boost/geometry/geometries/ring.hpp>
#include <boost/geometry/algorithms/not_implemented.hpp>
namespace boost { namespace geometry
{
namespace detail { namespace helper_geometries
{
template
<
typename Point,
typename NewCoordinateType,
typename NewUnits,
typename CS_Tag = typename cs_tag<Point>::type
>
struct helper_point
{
typedef model::point
<
NewCoordinateType,
dimension<Point>::value,
typename cs_tag_to_coordinate_system<NewUnits, CS_Tag>::type
> type;
};
}} // detail::helper_geometries
namespace detail_dispatch
{
template
<
typename Geometry,
typename NewCoordinateType,
typename NewUnits,
typename Tag = typename tag<Geometry>::type>
struct helper_geometry : not_implemented<Geometry>
{};
template <typename Point, typename NewCoordinateType, typename NewUnits>
struct helper_geometry<Point, NewCoordinateType, NewUnits, point_tag>
{
using type = typename detail::helper_geometries::helper_point
<
Point, NewCoordinateType, NewUnits
>::type;
};
template <typename Box, typename NewCoordinateType, typename NewUnits>
struct helper_geometry<Box, NewCoordinateType, NewUnits, box_tag>
{
using type = model::box
<
typename helper_geometry
<
typename point_type<Box>::type, NewCoordinateType, NewUnits
>::type
>;
};
template <typename Linestring, typename NewCoordinateType, typename NewUnits>
struct helper_geometry<Linestring, NewCoordinateType, NewUnits, linestring_tag>
{
using type = model::linestring
<
typename helper_geometry
<
typename point_type<Linestring>::type, NewCoordinateType, NewUnits
>::type
>;
};
template <typename Ring, typename NewCoordinateType, typename NewUnits>
struct helper_geometry<Ring, NewCoordinateType, NewUnits, ring_tag>
{
using type = model::ring
<
typename helper_geometry
<
typename point_type<Ring>::type, NewCoordinateType, NewUnits
>::type,
point_order<Ring>::value != counterclockwise,
closure<Ring>::value != open
>;
};
} // detail_dispatch
// Meta-function that provides a new helper geometry of the same kind as
// the input geometry and the same coordinate system type,
// but with a possibly different coordinate type and coordinate system units
template
<
typename Geometry,
typename NewCoordinateType = typename coordinate_type<Geometry>::type,
typename NewUnits = typename detail::cs_angular_units<Geometry>::type
>
struct helper_geometry
{
using type = typename detail_dispatch::helper_geometry
<
Geometry, NewCoordinateType, NewUnits
>::type;
};
}} // namespace boost::geometry
#endif // BOOST_GEOMETRY_GEOMETRIES_HELPER_GEOMETRY_HPP
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