1// Boost.Geometry (aka GGL, Generic Geometry Library)
2
3// Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
4// Copyright (c) 2008-2012 Barend Gehrels, Amsterdam, the Netherlands.
5// Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
6
7// This file was modified by Oracle on 2020.
8// Modifications copyright (c) 2020, Oracle and/or its affiliates.
9// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
10
11// Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
12// (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
13
14// Use, modification and distribution is subject to the Boost Software License,
15// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
16// http://www.boost.org/LICENSE_1_0.txt)
17
18#ifndef BOOST_GEOMETRY_CORE_COORDINATE_TYPE_HPP
19#define BOOST_GEOMETRY_CORE_COORDINATE_TYPE_HPP
20
21
22#include <boost/geometry/core/point_type.hpp>
23#include <boost/geometry/core/static_assert.hpp>
24#include <boost/geometry/core/tag.hpp>
25#include <boost/geometry/util/type_traits_std.hpp>
26
27
28namespace boost { namespace geometry
29{
30
31namespace traits
32{
33
34/*!
35\brief Traits class which indicate the coordinate type (double,float,...) of a point
36\ingroup traits
37\par Geometries:
38 - point
39\par Specializations should provide:
40 - typedef T type; (double,float,int,etc)
41*/
42template <typename Point, typename Enable = void>
43struct coordinate_type
44{
45 BOOST_GEOMETRY_STATIC_ASSERT_FALSE(
46 "Not implemented for this Point type.",
47 Point);
48};
49
50} // namespace traits
51
52#ifndef DOXYGEN_NO_DISPATCH
53namespace core_dispatch
54{
55
56template <typename GeometryTag, typename Geometry>
57struct coordinate_type
58{
59 typedef typename point_type<GeometryTag, Geometry>::type point_type;
60
61 // Call its own specialization on point-tag
62 typedef typename coordinate_type<point_tag, point_type>::type type;
63};
64
65template <typename Point>
66struct coordinate_type<point_tag, Point>
67{
68 typedef typename traits::coordinate_type
69 <
70 typename util::remove_cptrref<Point>::type
71 >::type type;
72};
73
74
75} // namespace core_dispatch
76#endif // DOXYGEN_NO_DISPATCH
77
78
79/*!
80\brief \brief_meta{type, coordinate type (int\, float\, double\, etc), \meta_point_type}
81\tparam Geometry \tparam_geometry
82\ingroup core
83
84\qbk{[include reference/core/coordinate_type.qbk]}
85*/
86template <typename Geometry>
87struct coordinate_type
88{
89 typedef typename core_dispatch::coordinate_type
90 <
91 typename tag<Geometry>::type,
92 typename util::remove_cptrref<Geometry>::type
93 >::type type;
94};
95
96/*!
97\brief assert_coordinate_type_equal, a compile-time check for equality of two coordinate types
98\ingroup utility
99*/
100template <typename Geometry1, typename Geometry2>
101constexpr inline void assert_coordinate_type_equal(Geometry1 const& , Geometry2 const& )
102{
103 static_assert(std::is_same
104 <
105 typename coordinate_type<Geometry1>::type,
106 typename coordinate_type<Geometry2>::type
107 >::value, "Coordinate types in geometries should be the same");
108}
109
110}} // namespace boost::geometry
111
112
113#endif // BOOST_GEOMETRY_CORE_COORDINATE_TYPE_HPP
114

source code of boost/libs/geometry/include/boost/geometry/core/coordinate_type.hpp