// Boost.Geometry (aka GGL, Generic Geometry Library)
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// Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
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// Copyright (c) 2008-2012 Barend Gehrels, Amsterdam, the Netherlands.
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// Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
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// This file was modified by Oracle on 2020.
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// Modifications copyright (c) 2020, Oracle and/or its affiliates.
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// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
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// Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
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// (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
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// Use, modification and distribution is subject to the Boost Software License,
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// Version 1.0. (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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#ifndef BOOST_GEOMETRY_CORE_COORDINATE_DIMENSION_HPP
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#define BOOST_GEOMETRY_CORE_COORDINATE_DIMENSION_HPP
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#include <cstddef>
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#include <boost/geometry/core/point_type.hpp>
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#include <boost/geometry/core/static_assert.hpp>
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#include <boost/geometry/util/type_traits_std.hpp>
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namespace boost { namespace geometry
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{
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namespace traits
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{
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/*!
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\brief Traits class indicating the number of dimensions of a point
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\par Geometries:
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- point
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\par Specializations should provide:
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- value (e.g. derived from std::integral_constant<std::size_t, D>)
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\ingroup traits
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*/
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template <typename Point, typename Enable = void>
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struct dimension
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{
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BOOST_GEOMETRY_STATIC_ASSERT_FALSE(
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"Not implemented for this Point type.",
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Point);
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};
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} // namespace traits
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#ifndef DOXYGEN_NO_DISPATCH
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namespace core_dispatch
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{
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// Base class derive from its own specialization of point-tag
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template <typename T, typename G>
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struct dimension
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: dimension<point_tag, typename point_type<T, G>::type>::type
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{};
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template <typename P>
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struct dimension<point_tag, P>
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: std::integral_constant
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<
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std::size_t,
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traits::dimension<util::remove_cptrref_t<P>>::value
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>
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{
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BOOST_GEOMETRY_STATIC_ASSERT(
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(traits::dimension<util::remove_cptrref_t<P>>::value > 0),
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"Dimension has to be greater than 0.",
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traits::dimension<util::remove_cptrref_t<P>>
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);
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};
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} // namespace core_dispatch
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#endif
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/*!
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\brief \brief_meta{value, number of coordinates (the number of axes of any geometry), \meta_point_type}
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\tparam Geometry \tparam_geometry
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\ingroup core
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\qbk{[include reference/core/coordinate_dimension.qbk]}
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*/
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template <typename Geometry>
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struct dimension
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: core_dispatch::dimension
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<
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typename tag<Geometry>::type,
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typename util::remove_cptrref<Geometry>::type
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>
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{};
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/*!
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\brief assert_dimension, enables compile-time checking if coordinate dimensions are as expected
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\ingroup utility
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*/
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template <typename Geometry, std::size_t Dimensions>
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constexpr inline void assert_dimension()
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{
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BOOST_STATIC_ASSERT(( dimension<Geometry>::value == Dimensions ));
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}
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/*!
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\brief assert_dimension, enables compile-time checking if coordinate dimensions are as expected
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\ingroup utility
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*/
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template <typename Geometry, std::size_t Dimensions>
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constexpr inline void assert_dimension_less_equal()
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{
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BOOST_STATIC_ASSERT(( dimension<Geometry>::value <= Dimensions ));
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}
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template <typename Geometry, std::size_t Dimensions>
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constexpr inline void assert_dimension_greater_equal()
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{
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BOOST_STATIC_ASSERT(( dimension<Geometry>::value >= Dimensions ));
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}
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/*!
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\brief assert_dimension_equal, enables compile-time checking if coordinate dimensions of two geometries are equal
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\ingroup utility
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*/
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template <typename G1, typename G2>
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constexpr inline void assert_dimension_equal()
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{
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BOOST_STATIC_ASSERT(( dimension<G1>::value == dimension<G2>::value ));
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}
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}} // namespace boost::geometry
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#endif // BOOST_GEOMETRY_CORE_COORDINATE_DIMENSION_HPP
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