// Boost.Geometry (aka GGL, Generic Geometry Library)

// Copyright (c) 2007-2011 Barend Gehrels, Amsterdam, the Netherlands.
// Copyright (c) 2008-2011 Bruno Lalande, Paris, France.
// 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_ALGORITHMS_ASSIGN_HPP
#define BOOST_GEOMETRY_ALGORITHMS_ASSIGN_HPP


#include <cstddef>

#include <boost/concept/requires.hpp>
#include <boost/concept_check.hpp>
#include <boost/mpl/assert.hpp>
#include <boost/mpl/if.hpp>
#include <boost/numeric/conversion/bounds.hpp>
#include <boost/numeric/conversion/cast.hpp>
#include <boost/type_traits.hpp>

#include <boost/geometry/algorithms/detail/assign_box_corners.hpp>
#include <boost/geometry/algorithms/detail/assign_indexed_point.hpp>
#include <boost/geometry/algorithms/detail/assign_values.hpp>
#include <boost/geometry/algorithms/convert.hpp>

#include <boost/geometry/arithmetic/arithmetic.hpp>
#include <boost/geometry/algorithms/append.hpp>
#include <boost/geometry/algorithms/clear.hpp>
#include <boost/geometry/core/access.hpp>
#include <boost/geometry/core/exterior_ring.hpp>
#include <boost/geometry/core/tags.hpp>

#include <boost/geometry/geometries/concepts/check.hpp>


#include <boost/geometry/util/for_each_coordinate.hpp>


namespace boost { namespace geometry
{

/*!
\brief Assign a range of points to a linestring, ring or polygon
\note The point-type of the range might be different from the point-type of the geometry
\ingroup assign
\tparam Geometry \tparam_geometry
\tparam Range \tparam_range_point
\param geometry \param_geometry
\param range \param_range_point

\qbk{
[heading Notes]
[note Assign automatically clears the geometry before assigning (use append if you don't want that)]
[heading Example]
[assign_points] [assign_points_output]

[heading See also]
\* [link geometry.reference.algorithms.append append]
}
 */
template <typename Geometry, typename Range>
inline void assign_points(Geometry& geometry, Range const& range)
{
    concept::check<Geometry>();

    clear(geometry);
    geometry::append(geometry, range, -1, 0);
}


/*!
\brief assign to a box inverse infinite
\details The assign_inverse function initialize a 2D or 3D box with large coordinates, the
min corner is very large, the max corner is very small. This is a convenient starting point to
collect the minimum bounding box of a geometry.
\ingroup assign
\tparam Geometry \tparam_geometry
\param geometry \param_geometry

\qbk{
[heading Example]
[assign_inverse] [assign_inverse_output]

[heading See also]
\* [link geometry.reference.algorithms.make.make_inverse make_inverse]
}
 */
template <typename Geometry>
inline void assign_inverse(Geometry& geometry)
{
    concept::check<Geometry>();

    dispatch::assign_inverse
        <
            typename tag<Geometry>::type,
            Geometry
        >::apply(geometry);
}

/*!
\brief assign zero values to a box, point
\ingroup assign
\details The assign_zero function initializes a 2D or 3D point or box with coordinates of zero
\tparam Geometry \tparam_geometry
\param geometry \param_geometry

 */
template <typename Geometry>
inline void assign_zero(Geometry& geometry)
{
    concept::check<Geometry>();

    dispatch::assign_zero
        <
            typename tag<Geometry>::type,
            Geometry
        >::apply(geometry);
}

/*!
\brief Assigns one geometry to another geometry
\details The assign algorithm assigns one geometry, e.g. a BOX, to another geometry, e.g. a RING. This only
if it is possible and applicable.
\ingroup assign
\tparam Geometry1 \tparam_geometry
\tparam Geometry2 \tparam_geometry
\param geometry1 \param_geometry (target)
\param geometry2 \param_geometry (source)

\qbk{
[heading Example]
[assign] [assign_output]

[heading See also]
\* [link geometry.reference.algorithms.convert convert]
}
 */
template <typename Geometry1, typename Geometry2>
inline void assign(Geometry1& geometry1, Geometry2 const& geometry2)
{
    concept::check_concepts_and_equal_dimensions<Geometry1, Geometry2 const>();

    bool const same_point_order = 
            point_order<Geometry1>::value == point_order<Geometry2>::value;
    bool const same_closure = 
            closure<Geometry1>::value == closure<Geometry2>::value;

    BOOST_MPL_ASSERT_MSG
        (
            same_point_order, ASSIGN_IS_NOT_SUPPORTED_FOR_DIFFERENT_POINT_ORDER
            , (types<Geometry1, Geometry2>)
        );
    BOOST_MPL_ASSERT_MSG
        (
            same_closure, ASSIGN_IS_NOT_SUPPORTED_FOR_DIFFERENT_CLOSURE
            , (types<Geometry1, Geometry2>)
        );

    dispatch::convert
        <
            false,
            typename tag<Geometry2>::type,
            typename tag<Geometry1>::type,
            dimension<Geometry1>::type::value,
            Geometry2,
            Geometry1
        >::apply(geometry2, geometry1);
}


}} // namespace boost::geometry



#endif // BOOST_GEOMETRY_ALGORITHMS_ASSIGN_HPP
