Generic Image Library: point.hpp Source File

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concepts/point.hpp
1//
2// Copyright 2005-2007 Adobe Systems Incorporated
3//
4// Distributed under the Boost Software License, Version 1.0
5// See accompanying file LICENSE_1_0.txt or copy at
6// http://www.boost.org/LICENSE_1_0.txt
7//
8#ifndef BOOST_GIL_CONCEPTS_POINT_HPP
9#define BOOST_GIL_CONCEPTS_POINT_HPP
10
11#include <boost/gil/concepts/basic.hpp>
12#include <boost/gil/concepts/concept_check.hpp>
13
14#include <cstddef>
15
16#if defined(BOOST_CLANG)
17#pragma clang diagnostic push
18#pragma clang diagnostic ignored "-Wunknown-pragmas"
19#pragma clang diagnostic ignored "-Wunused-local-typedefs"
20#endif
21
22#if defined(BOOST_GCC) && (BOOST_GCC >= 40900)
23#pragma GCC diagnostic push
24#pragma GCC diagnostic ignored "-Wunused-local-typedefs"
25#endif
26
27namespace boost { namespace gil {
28
29// Forward declarations
30template <typename T>
31 class point;
32
33template <std::size_t K, typename T>
34T const& axis_value(point<T> const& p);
35
36template <std::size_t K, typename T>
37T& axis_value(point<T>& p);
38
60template <typename P>
61 struct PointNDConcept
62{
63 void constraints()
64 {
65 gil_function_requires<Regular<P>>();
66
67 using value_type = typename P::value_type;
68 ignore_unused_variable_warning(value_type{});
69
70 static const std::size_t N = P::num_dimensions;
71 ignore_unused_variable_warning(N);
72 using FT = typename P::template axis<0>::coord_t;
73 using LT = typename P::template axis<N - 1>::coord_t;
74 FT ft = gil::axis_value<0>(point);
75 axis_value<0>(point) = ft;
76 LT lt = axis_value<N - 1>(point);
77 axis_value<N - 1>(point) = lt;
78
79 //value_type v=point[0];
80 //ignore_unused_variable_warning(v);
81 }
82 P point;
83};
84
102template <typename P>
103 struct Point2DConcept
104{
105 void constraints()
106 {
107 gil_function_requires<PointNDConcept<P>>();
108 static_assert(P::num_dimensions == 2, "");
109 point.x = point.y;
110 point[0] = point[1];
111 }
112 P point;
113};
114
115}} // namespace boost::gil
116
117#if defined(BOOST_CLANG)
118#pragma clang diagnostic pop
119#endif
120
121#if defined(BOOST_GCC) && (BOOST_GCC >= 40900)
122#pragma GCC diagnostic pop
123#endif
124
125#endif
boost::gil::point
2D point both axes of which have the same dimension typeModels: Point2DConcept
Definition concepts/point.hpp:31
boost
defined(BOOST_NO_CXX17_HDR_MEMORY_RESOURCE)
Definition algorithm.hpp:36
boost::gil::Point2DConcept
2-dimensional point concept
Definition concepts/point.hpp:104
boost::gil::PointNDConcept
N-dimensional point concept.
Definition concepts/point.hpp:62