| // Boost.Geometry (aka GGL, Generic Geometry Library) |
| |
| // Copyright (c) 2008-2011 Bruno Lalande, Paris, France. |
| // Copyright (c) 2008-2011 Barend Gehrels, Amsterdam, the Netherlands. |
| // Copyright (c) 2009-2011 Mateusz Loskot, London, UK. |
| |
| // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library |
| // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands. |
| |
| // Use, modification and distribution is subject to the Boost Software License, |
| // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
| // http://www.boost.org/LICENSE_1_0.txt) |
| |
| #ifndef BOOST_GEOMETRY_CORE_COORDINATE_TYPE_HPP |
| #define BOOST_GEOMETRY_CORE_COORDINATE_TYPE_HPP |
| |
| |
| #include <boost/mpl/assert.hpp> |
| #include <boost/type_traits/remove_const.hpp> |
| |
| #include <boost/geometry/core/point_type.hpp> |
| #include <boost/geometry/util/promote_floating_point.hpp> |
| |
| |
| namespace boost { namespace geometry |
| { |
| |
| namespace traits |
| { |
| |
| /*! |
| \brief Traits class which indicate the coordinate type (double,float,...) of a point |
| \ingroup traits |
| \par Geometries: |
| - point |
| \par Specializations should provide: |
| - typedef T type; (double,float,int,etc) |
| */ |
| template <typename Point, typename Enable = void> |
| struct coordinate_type |
| { |
| BOOST_MPL_ASSERT_MSG |
| ( |
| false, NOT_IMPLEMENTED_FOR_THIS_POINT_TYPE, (types<Point>) |
| ); |
| }; |
| |
| } // namespace traits |
| |
| #ifndef DOXYGEN_NO_DISPATCH |
| namespace core_dispatch |
| { |
| |
| template <typename GeometryTag, typename Geometry> |
| struct coordinate_type |
| { |
| typedef typename point_type<GeometryTag, Geometry>::type point_type; |
| |
| // Call its own specialization on point-tag |
| typedef typename coordinate_type<point_tag, point_type>::type type; |
| }; |
| |
| template <typename Point> |
| struct coordinate_type<point_tag, Point> |
| { |
| typedef typename traits::coordinate_type<Point>::type type; |
| }; |
| |
| } // namespace core_dispatch |
| #endif // DOXYGEN_NO_DISPATCH |
| |
| /*! |
| \brief \brief_meta{type, coordinate type (int\, float\, double\, etc), \meta_point_type} |
| \tparam Geometry \tparam_geometry |
| \ingroup core |
| |
| \qbk{[include reference/core/coordinate_type.qbk]} |
| */ |
| template <typename Geometry> |
| struct coordinate_type |
| { |
| typedef typename core_dispatch::coordinate_type |
| < |
| typename tag<Geometry>::type, |
| typename boost::remove_const<Geometry>::type |
| >::type type; |
| }; |
| |
| template <typename Geometry> |
| struct fp_coordinate_type |
| { |
| typedef typename promote_floating_point |
| < |
| typename coordinate_type<Geometry>::type |
| >::type type; |
| }; |
| |
| |
| }} // namespace boost::geometry |
| |
| |
| #endif // BOOST_GEOMETRY_CORE_COORDINATE_TYPE_HPP |