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// Boost.Geometry (aka GGL, Generic Geometry Library)
// Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
// Copyright (c) 2008-2012 Barend Gehrels, Amsterdam, the Netherlands.
// Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
// Copyright (c) 2023 Adam Wulkiewicz, Lodz, Poland.
// This file was modified by Oracle on 2021.
// Modifications copyright (c) 2021 Oracle and/or its affiliates.
// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
// 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_ARITHMETIC_ARITHMETIC_HPP
#define BOOST_GEOMETRY_ARITHMETIC_ARITHMETIC_HPP
#include <functional>
#include <boost/concept/requires.hpp>
#include <boost/geometry/core/coordinate_type.hpp>
#include <boost/geometry/geometries/concepts/point_concept.hpp>
#include <boost/geometry/util/algorithm.hpp>
#include <boost/geometry/util/select_coordinate_type.hpp>
namespace boost { namespace geometry
{
/*!
\brief Adds the same value to each coordinate of a point
\ingroup arithmetic
\details
\tparam Point \tparam_point
\param p point
\param value value to add
*/
template <typename Point>
inline void add_value(Point& p, typename coordinate_type<Point>::type const& value)
{
BOOST_CONCEPT_ASSERT( (concepts::Point<Point>) );
detail::for_each_dimension<Point>([&](auto index)
{
set<index>(p, get<index>(p) + value);
});
}
/*!
\brief Adds a point to another
\ingroup arithmetic
\details The coordinates of the second point will be added to those of the first point.
The second point is not modified.
\tparam Point1 \tparam_point
\tparam Point2 \tparam_point
\param p1 first point
\param p2 second point
*/
template <typename Point1, typename Point2>
inline void add_point(Point1& p1, Point2 const& p2)
{
BOOST_CONCEPT_ASSERT( (concepts::Point<Point1>) );
BOOST_CONCEPT_ASSERT( (concepts::ConstPoint<Point2>) );
detail::for_each_dimension<Point1>([&](auto index)
{
using calc_t = typename select_coordinate_type<Point1, Point2>::type;
set<index>(p1, calc_t(get<index>(p1)) + calc_t(get<index>(p2)));
});
}
/*!
\brief Subtracts the same value to each coordinate of a point
\ingroup arithmetic
\details
\tparam Point \tparam_point
\param p point
\param value value to subtract
*/
template <typename Point>
inline void subtract_value(Point& p, typename coordinate_type<Point>::type const& value)
{
BOOST_CONCEPT_ASSERT( (concepts::Point<Point>) );
detail::for_each_dimension<Point>([&](auto index)
{
set<index>(p, get<index>(p) - value);
});
}
/*!
\brief Subtracts a point to another
\ingroup arithmetic
\details The coordinates of the second point will be subtracted to those of the first point.
The second point is not modified.
\tparam Point1 \tparam_point
\tparam Point2 \tparam_point
\param p1 first point
\param p2 second point
*/
template <typename Point1, typename Point2>
inline void subtract_point(Point1& p1, Point2 const& p2)
{
BOOST_CONCEPT_ASSERT( (concepts::Point<Point1>) );
BOOST_CONCEPT_ASSERT( (concepts::ConstPoint<Point2>) );
detail::for_each_dimension<Point1>([&](auto index)
{
using calc_t = typename select_coordinate_type<Point1, Point2>::type;
set<index>(p1, calc_t(get<index>(p1)) - calc_t(get<index>(p2)));
});
}
/*!
\brief Multiplies each coordinate of a point by the same value
\ingroup arithmetic
\details
\tparam Point \tparam_point
\param p point
\param value value to multiply by
*/
template <typename Point>
inline void multiply_value(Point& p, typename coordinate_type<Point>::type const& value)
{
BOOST_CONCEPT_ASSERT( (concepts::Point<Point>) );
detail::for_each_dimension<Point>([&](auto index)
{
set<index>(p, get<index>(p) * value);
});
}
/*!
\brief Multiplies a point by another
\ingroup arithmetic
\details The coordinates of the first point will be multiplied by those of the second point.
The second point is not modified.
\tparam Point1 \tparam_point
\tparam Point2 \tparam_point
\param p1 first point
\param p2 second point
\note This is *not* a dot, cross or wedge product. It is a mere field-by-field multiplication.
*/
template <typename Point1, typename Point2>
inline void multiply_point(Point1& p1, Point2 const& p2)
{
BOOST_CONCEPT_ASSERT( (concepts::Point<Point1>) );
BOOST_CONCEPT_ASSERT( (concepts::ConstPoint<Point2>) );
detail::for_each_dimension<Point1>([&](auto index)
{
using calc_t = typename select_coordinate_type<Point1, Point2>::type;
set<index>(p1, calc_t(get<index>(p1)) * calc_t(get<index>(p2)));
});
}
/*!
\brief Divides each coordinate of the same point by a value
\ingroup arithmetic
\details
\tparam Point \tparam_point
\param p point
\param value value to divide by
*/
template <typename Point>
inline void divide_value(Point& p, typename coordinate_type<Point>::type const& value)
{
BOOST_CONCEPT_ASSERT( (concepts::Point<Point>) );
detail::for_each_dimension<Point>([&](auto index)
{
set<index>(p, get<index>(p) / value);
});
}
/*!
\brief Divides a point by another
\ingroup arithmetic
\details The coordinates of the first point will be divided by those of the second point.
The second point is not modified.
\tparam Point1 \tparam_point
\tparam Point2 \tparam_point
\param p1 first point
\param p2 second point
*/
template <typename Point1, typename Point2>
inline void divide_point(Point1& p1, Point2 const& p2)
{
BOOST_CONCEPT_ASSERT( (concepts::Point<Point1>) );
BOOST_CONCEPT_ASSERT( (concepts::ConstPoint<Point2>) );
detail::for_each_dimension<Point1>([&](auto index)
{
using calc_t = typename select_coordinate_type<Point1, Point2>::type;
set<index>(p1, calc_t(get<index>(p1)) / calc_t(get<index>(p2)));
});
}
/*!
\brief Assign each coordinate of a point the same value
\ingroup arithmetic
\details
\tparam Point \tparam_point
\param p point
\param value value to assign
*/
template <typename Point>
inline void assign_value(Point& p, typename coordinate_type<Point>::type const& value)
{
BOOST_CONCEPT_ASSERT( (concepts::Point<Point>) );
detail::for_each_dimension<Point>([&](auto index)
{
set<index>(p, value);
});
}
/*!
\brief Assign a point with another
\ingroup arithmetic
\details The coordinates of the first point will be assigned those of the second point.
The second point is not modified.
\tparam Point1 \tparam_point
\tparam Point2 \tparam_point
\param p1 first point
\param p2 second point
*/
template <typename Point1, typename Point2>
inline void assign_point(Point1& p1, Point2 const& p2)
{
BOOST_CONCEPT_ASSERT( (concepts::Point<Point1>) );
BOOST_CONCEPT_ASSERT( (concepts::ConstPoint<Point2>) );
detail::for_each_dimension<Point1>([&](auto index)
{
set<index>(p1, get<index>(p2));
});
}
}} // namespace boost::geometry
#endif // BOOST_GEOMETRY_ARITHMETIC_ARITHMETIC_HPP
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