Chris@16: // Boost.Geometry (aka GGL, Generic Geometry Library)
Chris@16: 
Chris@16: // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
Chris@16: // Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
Chris@16: // Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
Chris@16: 
Chris@16: // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
Chris@16: // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
Chris@16: 
Chris@16: // Use, modification and distribution is subject to the Boost Software License,
Chris@16: // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: 
Chris@16: #ifndef BOOST_GEOMETRY_ALGORITHMS_ASSIGN_VALUES_HPP
Chris@16: #define BOOST_GEOMETRY_ALGORITHMS_ASSIGN_VALUES_HPP
Chris@16: 
Chris@16: 
Chris@16: #include <cstddef>
Chris@16: 
Chris@16: #include <boost/concept/requires.hpp>
Chris@16: #include <boost/concept_check.hpp>
Chris@16: #include <boost/mpl/assert.hpp>
Chris@16: #include <boost/mpl/if.hpp>
Chris@16: #include <boost/numeric/conversion/bounds.hpp>
Chris@16: #include <boost/numeric/conversion/cast.hpp>
Chris@16: #include <boost/type_traits.hpp>
Chris@16: 
Chris@16: #include <boost/geometry/arithmetic/arithmetic.hpp>
Chris@16: #include <boost/geometry/algorithms/append.hpp>
Chris@16: #include <boost/geometry/algorithms/clear.hpp>
Chris@16: #include <boost/geometry/core/access.hpp>
Chris@16: #include <boost/geometry/core/exterior_ring.hpp>
Chris@16: #include <boost/geometry/core/tags.hpp>
Chris@16: 
Chris@16: #include <boost/geometry/geometries/concepts/check.hpp>
Chris@16: 
Chris@16: 
Chris@16: #include <boost/geometry/util/for_each_coordinate.hpp>
Chris@16: 
Chris@16: 
Chris@16: namespace boost { namespace geometry
Chris@16: {
Chris@16: 
Chris@16: #ifndef DOXYGEN_NO_DETAIL
Chris@16: namespace detail { namespace assign
Chris@16: {
Chris@16: 
Chris@16: 
Chris@16: template <std::size_t Index, std::size_t Dimension, std::size_t DimensionCount>
Chris@16: struct initialize
Chris@16: {
Chris@16:     template <typename Box>
Chris@16:     static inline void apply(Box& box, typename coordinate_type<Box>::type const& value)
Chris@16:     {
Chris@16:         geometry::set<Index, Dimension>(box, value);
Chris@16:         initialize<Index, Dimension + 1, DimensionCount>::apply(box, value);
Chris@16:     }
Chris@16: };
Chris@16: 
Chris@16: 
Chris@16: template <std::size_t Index, std::size_t DimensionCount>
Chris@16: struct initialize<Index, DimensionCount, DimensionCount>
Chris@16: {
Chris@16:     template <typename Box>
Chris@16:     static inline void apply(Box&, typename coordinate_type<Box>::type const&)
Chris@16:     {}
Chris@16: };
Chris@16: 
Chris@16: 
Chris@16: struct assign_zero_point
Chris@16: {
Chris@16:     template <typename Point>
Chris@16:     static inline void apply(Point& point)
Chris@16:     {
Chris@16:         geometry::assign_value(point, 0);
Chris@16:     }
Chris@16: };
Chris@16: 
Chris@16: 
Chris@16: struct assign_inverse_box_or_segment
Chris@16: {
Chris@16: 
Chris@16:     template <typename BoxOrSegment>
Chris@16:     static inline void apply(BoxOrSegment& geometry)
Chris@16:     {
Chris@16:         typedef typename point_type<BoxOrSegment>::type point_type;
Chris@16:         typedef typename coordinate_type<point_type>::type bound_type;
Chris@16: 
Chris@16:         initialize<0, 0, dimension<BoxOrSegment>::type::value>::apply(
Chris@16:             geometry, boost::numeric::bounds<bound_type>::highest()
Chris@16:         );
Chris@16:         initialize<1, 0, dimension<BoxOrSegment>::type::value>::apply(
Chris@16:             geometry, boost::numeric::bounds<bound_type>::lowest()
Chris@16:         );
Chris@16:     }
Chris@16: };
Chris@16: 
Chris@16: 
Chris@16: struct assign_zero_box_or_segment
Chris@16: {
Chris@16:     template <typename BoxOrSegment>
Chris@16:     static inline void apply(BoxOrSegment& geometry)
Chris@16:     {
Chris@16:         typedef typename coordinate_type<BoxOrSegment>::type coordinate_type;
Chris@16: 
Chris@16:         initialize<0, 0, dimension<BoxOrSegment>::type::value>::apply(
Chris@16:             geometry, coordinate_type()
Chris@16:         );
Chris@16:         initialize<1, 0, dimension<BoxOrSegment>::type::value>::apply(
Chris@16:             geometry, coordinate_type()
Chris@16:         );
Chris@16:     }
Chris@16: };
Chris@16: 
Chris@16: 
Chris@16: template
Chris@16: <
Chris@16:     std::size_t Corner1, std::size_t Corner2,
Chris@16:     typename Box, typename Point
Chris@16: >
Chris@16: inline void assign_box_2d_corner(Box const& box, Point& point)
Chris@16: {
Chris@16:     // Be sure both are 2-Dimensional
Chris@16:     assert_dimension<Box, 2>();
Chris@16:     assert_dimension<Point, 2>();
Chris@16: 
Chris@16:     // Copy coordinates
Chris@16:     typedef typename coordinate_type<Point>::type coordinate_type;
Chris@16: 
Chris@16:     geometry::set<0>(point, boost::numeric_cast<coordinate_type>(get<Corner1, 0>(box)));
Chris@16:     geometry::set<1>(point, boost::numeric_cast<coordinate_type>(get<Corner2, 1>(box)));
Chris@16: }
Chris@16: 
Chris@16: 
Chris@16: 
Chris@16: template
Chris@16: <
Chris@16:     typename Geometry, typename Point,
Chris@16:     std::size_t Index,
Chris@16:     std::size_t Dimension, std::size_t DimensionCount
Chris@16: >
Chris@16: struct assign_point_to_index
Chris@16: {
Chris@16: 
Chris@16:     static inline void apply(Point const& point, Geometry& geometry)
Chris@16:     {
Chris@16:         geometry::set<Index, Dimension>(geometry, boost::numeric_cast
Chris@16:             <
Chris@16:                 typename coordinate_type<Geometry>::type
Chris@16:             >(geometry::get<Dimension>(point)));
Chris@16: 
Chris@16:         assign_point_to_index
Chris@16:             <
Chris@16:                 Geometry, Point, Index, Dimension + 1, DimensionCount
Chris@16:             >::apply(point, geometry);
Chris@16:     }
Chris@16: };
Chris@16: 
Chris@16: template
Chris@16: <
Chris@16:     typename Geometry, typename Point,
Chris@16:     std::size_t Index,
Chris@16:     std::size_t DimensionCount
Chris@16: >
Chris@16: struct assign_point_to_index
Chris@16:     <
Chris@16:         Geometry, Point,
Chris@16:         Index,
Chris@16:         DimensionCount, DimensionCount
Chris@16:     >
Chris@16: {
Chris@16:     static inline void apply(Point const& , Geometry& )
Chris@16:     {
Chris@16:     }
Chris@16: };
Chris@16: 
Chris@16: 
Chris@16: template
Chris@16: <
Chris@16:     typename Geometry, typename Point,
Chris@16:     std::size_t Index,
Chris@16:     std::size_t Dimension, std::size_t DimensionCount
Chris@16: >
Chris@16: struct assign_point_from_index
Chris@16: {
Chris@16: 
Chris@16:     static inline void apply(Geometry const& geometry, Point& point)
Chris@16:     {
Chris@16:         geometry::set<Dimension>( point, boost::numeric_cast
Chris@16:             <
Chris@16:                 typename coordinate_type<Point>::type
Chris@16:             >(geometry::get<Index, Dimension>(geometry)));
Chris@16: 
Chris@16:         assign_point_from_index
Chris@16:             <
Chris@16:                 Geometry, Point, Index, Dimension + 1, DimensionCount
Chris@16:             >::apply(geometry, point);
Chris@16:     }
Chris@16: };
Chris@16: 
Chris@16: template
Chris@16: <
Chris@16:     typename Geometry, typename Point,
Chris@16:     std::size_t Index,
Chris@16:     std::size_t DimensionCount
Chris@16: >
Chris@16: struct assign_point_from_index
Chris@16:     <
Chris@16:         Geometry, Point,
Chris@16:         Index,
Chris@16:         DimensionCount, DimensionCount
Chris@16:     >
Chris@16: {
Chris@16:     static inline void apply(Geometry const&, Point&)
Chris@16:     {
Chris@16:     }
Chris@16: };
Chris@16: 
Chris@16: 
Chris@16: template <typename Geometry>
Chris@16: struct assign_2d_box_or_segment
Chris@16: {
Chris@16:     typedef typename coordinate_type<Geometry>::type coordinate_type;
Chris@16: 
Chris@16:     // Here we assign 4 coordinates to a box of segment
Chris@16:     // -> Most logical is: x1,y1,x2,y2
Chris@16:     // In case the user reverses x1/x2 or y1/y2, for a box, we could reverse them (THAT IS NOT IMPLEMENTED)
Chris@16: 
Chris@16:     template <typename Type>
Chris@16:     static inline void apply(Geometry& geometry,
Chris@16:                 Type const& x1, Type const& y1, Type const& x2, Type const& y2)
Chris@16:     {
Chris@16:         geometry::set<0, 0>(geometry, boost::numeric_cast<coordinate_type>(x1));
Chris@16:         geometry::set<0, 1>(geometry, boost::numeric_cast<coordinate_type>(y1));
Chris@16:         geometry::set<1, 0>(geometry, boost::numeric_cast<coordinate_type>(x2));
Chris@16:         geometry::set<1, 1>(geometry, boost::numeric_cast<coordinate_type>(y2));
Chris@16:     }
Chris@16: };
Chris@16: 
Chris@16: 
Chris@16: }} // namespace detail::assign
Chris@16: #endif // DOXYGEN_NO_DETAIL
Chris@16: 
Chris@16: #ifndef DOXYGEN_NO_DISPATCH
Chris@16: namespace dispatch
Chris@16: {
Chris@16: 
Chris@16: template <typename GeometryTag, typename Geometry, std::size_t DimensionCount>
Chris@16: struct assign
Chris@16: {
Chris@16:     BOOST_MPL_ASSERT_MSG
Chris@16:         (
Chris@16:             false, NOT_OR_NOT_YET_IMPLEMENTED_FOR_THIS_GEOMETRY_TYPE
Chris@16:             , (types<Geometry>)
Chris@16:         );
Chris@16: };
Chris@16: 
Chris@16: template <typename Point>
Chris@16: struct assign<point_tag, Point, 2>
Chris@16: {
Chris@16:     typedef typename coordinate_type<Point>::type coordinate_type;
Chris@16: 
Chris@16:     template <typename T>
Chris@16:     static inline void apply(Point& point, T const& c1, T const& c2)
Chris@16:     {
Chris@16:         set<0>(point, boost::numeric_cast<coordinate_type>(c1));
Chris@16:         set<1>(point, boost::numeric_cast<coordinate_type>(c2));
Chris@16:     }
Chris@16: };
Chris@16: 
Chris@16: template <typename Point>
Chris@16: struct assign<point_tag, Point, 3>
Chris@16: {
Chris@16:     typedef typename coordinate_type<Point>::type coordinate_type;
Chris@16: 
Chris@16:     template <typename T>
Chris@16:     static inline void apply(Point& point, T const& c1, T const& c2, T const& c3)
Chris@16:     {
Chris@16:         set<0>(point, boost::numeric_cast<coordinate_type>(c1));
Chris@16:         set<1>(point, boost::numeric_cast<coordinate_type>(c2));
Chris@16:         set<2>(point, boost::numeric_cast<coordinate_type>(c3));
Chris@16:     }
Chris@16: };
Chris@16: 
Chris@16: template <typename Box>
Chris@16: struct assign<box_tag, Box, 2>
Chris@16:     : detail::assign::assign_2d_box_or_segment<Box>
Chris@16: {};
Chris@16: 
Chris@16: template <typename Segment>
Chris@16: struct assign<segment_tag, Segment, 2>
Chris@16:     : detail::assign::assign_2d_box_or_segment<Segment>
Chris@16: {};
Chris@16: 
Chris@16: 
Chris@16: 
Chris@16: template <typename GeometryTag, typename Geometry>
Chris@16: struct assign_zero {};
Chris@16: 
Chris@16: 
Chris@16: template <typename Point>
Chris@16: struct assign_zero<point_tag, Point>
Chris@16:     : detail::assign::assign_zero_point
Chris@16: {};
Chris@16: 
Chris@16: template <typename Box>
Chris@16: struct assign_zero<box_tag, Box>
Chris@16:     : detail::assign::assign_zero_box_or_segment
Chris@16: {};
Chris@16: 
Chris@16: template <typename Segment>
Chris@16: struct assign_zero<segment_tag, Segment>
Chris@16:     : detail::assign::assign_zero_box_or_segment
Chris@16: {};
Chris@16: 
Chris@16: 
Chris@16: template <typename GeometryTag, typename Geometry>
Chris@16: struct assign_inverse {};
Chris@16: 
Chris@16: template <typename Box>
Chris@16: struct assign_inverse<box_tag, Box>
Chris@16:     : detail::assign::assign_inverse_box_or_segment
Chris@16: {};
Chris@16: 
Chris@16: template <typename Segment>
Chris@16: struct assign_inverse<segment_tag, Segment>
Chris@16:     : detail::assign::assign_inverse_box_or_segment
Chris@16: {};
Chris@16: 
Chris@16: 
Chris@16: } // namespace dispatch
Chris@16: #endif // DOXYGEN_NO_DISPATCH
Chris@16: 
Chris@16: }} // namespace boost::geometry
Chris@16: 
Chris@16: 
Chris@16: #endif // BOOST_GEOMETRY_ALGORITHMS_ASSIGN_VALUES_HPP