//
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// Copyright 2005-2007 Adobe Systems Incorporated
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//
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// Distributed under the Boost Software License, Version 1.0
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// See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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//
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#ifndef BOOST_GIL_CONCEPTS_POINT_HPP
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#define BOOST_GIL_CONCEPTS_POINT_HPP
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#include <boost/gil/concepts/basic.hpp>
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#include <boost/gil/concepts/concept_check.hpp>
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#include <cstddef>
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#if defined(BOOST_CLANG)
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wunknown-pragmas"
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#pragma clang diagnostic ignored "-Wunused-local-typedefs"
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#endif
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#if defined(BOOST_GCC) && (BOOST_GCC >= 40900)
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wunused-local-typedefs"
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#endif
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namespace boost { namespace gil {
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// Forward declarations
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template <typename T>
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class point;
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template <std::size_t K, typename T>
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T const& axis_value(point<T> const& p);
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template <std::size_t K, typename T>
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T& axis_value(point<T>& p);
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/// \brief N-dimensional point concept
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/// \code
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/// concept PointNDConcept<typename T> : Regular<T>
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/// {
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/// // the type of a coordinate along each axis
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/// template <size_t K>
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/// struct axis; where Metafunction<axis>;
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///
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/// const size_t num_dimensions;
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///
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/// // accessor/modifier of the value of each axis.
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///
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/// template <size_t K>
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/// typename axis<K>::type const& T::axis_value() const;
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///
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/// template <size_t K>
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/// typename axis<K>::type& T::axis_value();
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/// };
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/// \endcode
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/// \ingroup PointConcept
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///
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template <typename P>
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struct PointNDConcept
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{
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void constraints()
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{
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gil_function_requires<Regular<P>>();
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using value_type = typename P::value_type;
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ignore_unused_variable_warning(value_type{});
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static const std::size_t N = P::num_dimensions;
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ignore_unused_variable_warning(N);
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using FT = typename P::template axis<0>::coord_t;
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using LT = typename P::template axis<N - 1>::coord_t;
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FT ft = gil::axis_value<0>(point);
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axis_value<0>(point) = ft;
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LT lt = axis_value<N - 1>(point);
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axis_value<N - 1>(point) = lt;
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//value_type v=point[0];
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//ignore_unused_variable_warning(v);
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}
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P point;
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};
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/// \brief 2-dimensional point concept
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/// \code
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/// concept Point2DConcept<typename T> : PointNDConcept<T>
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/// {
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/// where num_dimensions == 2;
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/// where SameType<axis<0>::type, axis<1>::type>;
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///
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/// typename value_type = axis<0>::type;
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///
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/// value_type const& operator[](T const&, size_t i);
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/// value_type& operator[](T&, size_t i);
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///
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/// value_type x,y;
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/// };
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/// \endcode
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/// \ingroup PointConcept
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///
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template <typename P>
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struct Point2DConcept
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{
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void constraints()
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{
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gil_function_requires<PointNDConcept<P>>();
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static_assert(P::num_dimensions == 2, "");
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point.x = point.y;
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point[0] = point[1];
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}
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P point;
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};
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}} // namespace boost::gil
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#if defined(BOOST_CLANG)
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#pragma clang diagnostic pop
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#endif
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#if defined(BOOST_GCC) && (BOOST_GCC >= 40900)
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#pragma GCC diagnostic pop
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#endif
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#endif
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