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443 lines
11 KiB
443 lines
11 KiB
// Boost.Geometry (aka GGL, Generic Geometry Library) |
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// Copyright (c) 2007-2011 Barend Gehrels, Amsterdam, the Netherlands. |
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// Copyright (c) 2008-2011 Bruno Lalande, Paris, France. |
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// Copyright (c) 2009-2011 Mateusz Loskot, London, UK. |
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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_ALGORITHMS_ASSIGN_VALUES_HPP |
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#define BOOST_GEOMETRY_ALGORITHMS_ASSIGN_VALUES_HPP |
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#include <cstddef> |
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#include <boost/concept/requires.hpp> |
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#include <boost/concept_check.hpp> |
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#include <boost/mpl/assert.hpp> |
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#include <boost/mpl/if.hpp> |
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#include <boost/numeric/conversion/bounds.hpp> |
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#include <boost/numeric/conversion/cast.hpp> |
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#include <boost/type_traits.hpp> |
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#include <boost/geometry/arithmetic/arithmetic.hpp> |
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#include <boost/geometry/algorithms/append.hpp> |
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#include <boost/geometry/algorithms/clear.hpp> |
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#include <boost/geometry/core/access.hpp> |
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#include <boost/geometry/core/exterior_ring.hpp> |
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#include <boost/geometry/core/tags.hpp> |
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#include <boost/geometry/geometries/concepts/check.hpp> |
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#include <boost/geometry/util/for_each_coordinate.hpp> |
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namespace boost { namespace geometry |
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{ |
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#ifndef DOXYGEN_NO_DETAIL |
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namespace detail { namespace assign |
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{ |
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template |
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< |
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typename Box, std::size_t Index, |
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std::size_t Dimension, std::size_t DimensionCount |
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> |
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struct initialize |
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{ |
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typedef typename coordinate_type<Box>::type coordinate_type; |
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static inline void apply(Box& box, coordinate_type const& value) |
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{ |
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geometry::set<Index, Dimension>(box, value); |
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initialize<Box, Index, Dimension + 1, DimensionCount>::apply(box, value); |
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} |
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}; |
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template <typename Box, std::size_t Index, std::size_t DimensionCount> |
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struct initialize<Box, Index, DimensionCount, DimensionCount> |
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{ |
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typedef typename coordinate_type<Box>::type coordinate_type; |
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static inline void apply(Box&, coordinate_type const& ) |
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{} |
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}; |
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template <typename Point> |
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struct assign_zero_point |
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{ |
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static inline void apply(Point& point) |
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{ |
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geometry::assign_value(point, 0); |
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} |
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}; |
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template <typename BoxOrSegment> |
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struct assign_inverse_box_or_segment |
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{ |
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typedef typename point_type<BoxOrSegment>::type point_type; |
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static inline void apply(BoxOrSegment& geometry) |
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{ |
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typedef typename coordinate_type<point_type>::type bound_type; |
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initialize |
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< |
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BoxOrSegment, 0, 0, dimension<BoxOrSegment>::type::value |
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>::apply( |
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geometry, boost::numeric::bounds<bound_type>::highest()); |
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initialize |
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< |
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BoxOrSegment, 1, 0, dimension<BoxOrSegment>::type::value |
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>::apply( |
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geometry, boost::numeric::bounds<bound_type>::lowest()); |
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} |
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}; |
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template <typename BoxOrSegment> |
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struct assign_zero_box_or_segment |
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{ |
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static inline void apply(BoxOrSegment& geometry) |
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{ |
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typedef typename coordinate_type<BoxOrSegment>::type coordinate_type; |
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initialize |
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< |
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BoxOrSegment, 0, 0, dimension<BoxOrSegment>::type::value |
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>::apply(geometry, coordinate_type()); |
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initialize |
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< |
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BoxOrSegment, 1, 0, dimension<BoxOrSegment>::type::value |
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>::apply(geometry, coordinate_type()); |
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} |
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}; |
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template |
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< |
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std::size_t Corner1, std::size_t Corner2, |
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typename Box, typename Point |
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> |
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inline void assign_box_2d_corner(Box const& box, Point& point) |
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{ |
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// Be sure both are 2-Dimensional |
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assert_dimension<Box, 2>(); |
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assert_dimension<Point, 2>(); |
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// Copy coordinates |
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typedef typename coordinate_type<Point>::type coordinate_type; |
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geometry::set<0>(point, boost::numeric_cast<coordinate_type>(get<Corner1, 0>(box))); |
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geometry::set<1>(point, boost::numeric_cast<coordinate_type>(get<Corner2, 1>(box))); |
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} |
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template |
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< |
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typename Geometry, typename Point, |
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std::size_t Index, |
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std::size_t Dimension, std::size_t DimensionCount |
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> |
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struct assign_point_to_index |
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{ |
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static inline void apply(Point const& point, Geometry& geometry) |
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{ |
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geometry::set<Index, Dimension>(geometry, boost::numeric_cast |
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< |
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typename coordinate_type<Geometry>::type |
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>(geometry::get<Dimension>(point))); |
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assign_point_to_index |
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< |
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Geometry, Point, Index, Dimension + 1, DimensionCount |
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>::apply(point, geometry); |
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} |
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}; |
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template |
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< |
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typename Geometry, typename Point, |
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std::size_t Index, |
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std::size_t DimensionCount |
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> |
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struct assign_point_to_index |
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< |
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Geometry, Point, |
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Index, |
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DimensionCount, DimensionCount |
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> |
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{ |
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static inline void apply(Point const& , Geometry& ) |
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{ |
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} |
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}; |
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template |
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< |
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typename Geometry, typename Point, |
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std::size_t Index, |
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std::size_t Dimension, std::size_t DimensionCount |
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> |
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struct assign_point_from_index |
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{ |
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static inline void apply(Geometry const& geometry, Point& point) |
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{ |
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geometry::set<Dimension>( point, boost::numeric_cast |
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< |
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typename coordinate_type<Point>::type |
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>(geometry::get<Index, Dimension>(geometry))); |
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assign_point_from_index |
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< |
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Geometry, Point, Index, Dimension + 1, DimensionCount |
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>::apply(geometry, point); |
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} |
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}; |
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template |
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< |
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typename Geometry, typename Point, |
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std::size_t Index, |
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std::size_t DimensionCount |
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> |
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struct assign_point_from_index |
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< |
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Geometry, Point, |
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Index, |
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DimensionCount, DimensionCount |
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> |
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{ |
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static inline void apply(Geometry const&, Point&) |
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{ |
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} |
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}; |
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template <typename Geometry> |
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struct assign_2d_box_or_segment |
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{ |
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typedef typename coordinate_type<Geometry>::type coordinate_type; |
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// Here we assign 4 coordinates to a box of segment |
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// -> Most logical is: x1,y1,x2,y2 |
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// In case the user reverses x1/x2 or y1/y2, for a box, we could reverse them (THAT IS NOT IMPLEMENTED) |
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template <typename Type> |
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static inline void apply(Geometry& geometry, |
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Type const& x1, Type const& y1, Type const& x2, Type const& y2) |
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{ |
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geometry::set<0, 0>(geometry, boost::numeric_cast<coordinate_type>(x1)); |
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geometry::set<0, 1>(geometry, boost::numeric_cast<coordinate_type>(y1)); |
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geometry::set<1, 0>(geometry, boost::numeric_cast<coordinate_type>(x2)); |
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geometry::set<1, 1>(geometry, boost::numeric_cast<coordinate_type>(y2)); |
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} |
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}; |
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}} // namespace detail::assign |
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#endif // DOXYGEN_NO_DETAIL |
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#ifndef DOXYGEN_NO_DISPATCH |
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namespace dispatch |
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{ |
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template <typename GeometryTag, typename Geometry, std::size_t DimensionCount> |
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struct assign |
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{ |
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BOOST_MPL_ASSERT_MSG |
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( |
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false, NOT_OR_NOT_YET_IMPLEMENTED_FOR_THIS_GEOMETRY_TYPE |
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, (types<Geometry>) |
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); |
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}; |
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template <typename Point> |
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struct assign<point_tag, Point, 2> |
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{ |
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typedef typename coordinate_type<Point>::type coordinate_type; |
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template <typename T> |
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static inline void apply(Point& point, T const& c1, T const& c2) |
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{ |
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set<0>(point, boost::numeric_cast<coordinate_type>(c1)); |
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set<1>(point, boost::numeric_cast<coordinate_type>(c2)); |
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} |
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}; |
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template <typename Point> |
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struct assign<point_tag, Point, 3> |
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{ |
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typedef typename coordinate_type<Point>::type coordinate_type; |
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template <typename T> |
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static inline void apply(Point& point, T const& c1, T const& c2, T const& c3) |
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{ |
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set<0>(point, boost::numeric_cast<coordinate_type>(c1)); |
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set<1>(point, boost::numeric_cast<coordinate_type>(c2)); |
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set<2>(point, boost::numeric_cast<coordinate_type>(c3)); |
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} |
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}; |
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template <typename Box> |
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struct assign<box_tag, Box, 2> |
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: detail::assign::assign_2d_box_or_segment<Box> |
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{}; |
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template <typename Segment> |
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struct assign<segment_tag, Segment, 2> |
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: detail::assign::assign_2d_box_or_segment<Segment> |
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{}; |
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template <typename GeometryTag, typename Geometry> |
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struct assign_zero {}; |
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template <typename Point> |
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struct assign_zero<point_tag, Point> |
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: detail::assign::assign_zero_point<Point> |
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{}; |
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template <typename Box> |
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struct assign_zero<box_tag, Box> |
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: detail::assign::assign_zero_box_or_segment<Box> |
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{}; |
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template <typename Segment> |
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struct assign_zero<segment_tag, Segment> |
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: detail::assign::assign_zero_box_or_segment<Segment> |
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{}; |
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template <typename GeometryTag, typename Geometry> |
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struct assign_inverse {}; |
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template <typename Box> |
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struct assign_inverse<box_tag, Box> |
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: detail::assign::assign_inverse_box_or_segment<Box> |
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{}; |
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template <typename Segment> |
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struct assign_inverse<segment_tag, Segment> |
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: detail::assign::assign_inverse_box_or_segment<Segment> |
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{}; |
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} // namespace dispatch |
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#endif // DOXYGEN_NO_DISPATCH |
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/*! |
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\brief Assign two coordinates to a geometry (usually a 2D point) |
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\ingroup assign |
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\tparam Geometry \tparam_geometry |
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\tparam Type \tparam_numeric to specify the coordinates |
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\param geometry \param_geometry |
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\param c1 \param_x |
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\param c2 \param_y |
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\qbk{distinguish, 2 coordinate values} |
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\qbk{ |
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[heading Example] |
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[assign_2d_point] [assign_2d_point_output] |
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[heading See also] |
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\* [link geometry.reference.algorithms.make.make_2_2_coordinate_values make] |
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} |
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*/ |
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template <typename Geometry, typename Type> |
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inline void assign_values(Geometry& geometry, Type const& c1, Type const& c2) |
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{ |
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concept::check<Geometry>(); |
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dispatch::assign |
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< |
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typename tag<Geometry>::type, |
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Geometry, |
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geometry::dimension<Geometry>::type::value |
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>::apply(geometry, c1, c2); |
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} |
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/*! |
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\brief Assign three values to a geometry (usually a 3D point) |
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\ingroup assign |
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\tparam Geometry \tparam_geometry |
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\tparam Type \tparam_numeric to specify the coordinates |
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\param geometry \param_geometry |
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\param c1 \param_x |
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\param c2 \param_y |
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\param c3 \param_z |
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\qbk{distinguish, 3 coordinate values} |
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\qbk{ |
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[heading Example] |
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[assign_3d_point] [assign_3d_point_output] |
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[heading See also] |
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\* [link geometry.reference.algorithms.make.make_3_3_coordinate_values make] |
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} |
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*/ |
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template <typename Geometry, typename Type> |
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inline void assign_values(Geometry& geometry, |
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Type const& c1, Type const& c2, Type const& c3) |
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{ |
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concept::check<Geometry>(); |
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dispatch::assign |
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< |
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typename tag<Geometry>::type, |
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Geometry, |
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geometry::dimension<Geometry>::type::value |
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>::apply(geometry, c1, c2, c3); |
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} |
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/*! |
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\brief Assign four values to a geometry (usually a box or segment) |
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\ingroup assign |
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\tparam Geometry \tparam_geometry |
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\tparam Type \tparam_numeric to specify the coordinates |
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\param geometry \param_geometry |
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\param c1 First coordinate (usually x1) |
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\param c2 Second coordinate (usually y1) |
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\param c3 Third coordinate (usually x2) |
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\param c4 Fourth coordinate (usually y2) |
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\qbk{distinguish, 4 coordinate values} |
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*/ |
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template <typename Geometry, typename Type> |
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inline void assign_values(Geometry& geometry, |
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Type const& c1, Type const& c2, Type const& c3, Type const& c4) |
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{ |
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concept::check<Geometry>(); |
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dispatch::assign |
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< |
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typename tag<Geometry>::type, |
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Geometry, |
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geometry::dimension<Geometry>::type::value |
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>::apply(geometry, c1, c2, c3, c4); |
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} |
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}} // namespace boost::geometry |
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#endif // BOOST_GEOMETRY_ALGORITHMS_ASSIGN_VALUES_HPP
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