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// Boost.Geometry (aka GGL, Generic Geometry Library)
// Copyright (c) 2007-2015 Barend Gehrels, Amsterdam, the Netherlands.
// Copyright (c) 2008-2015 Bruno Lalande, Paris, France.
// Copyright (c) 2009-2015 Mateusz Loskot, London, UK.
// This file was modified by Oracle on 2015, 2016, 2018, 2019.
// Modifications copyright (c) 2015-2019, Oracle and/or its affiliates.
// Contributed and/or modified by Vissarion Fysikopoulos, on behalf of Oracle
// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
// 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.
// Distributed under 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_STRATEGIES_CARTESIAN_ENVELOPE_HPP
#define BOOST_GEOMETRY_STRATEGIES_CARTESIAN_ENVELOPE_HPP
#include <boost/range/begin.hpp>
#include <boost/range/end.hpp>
#include <boost/geometry/algorithms/detail/envelope/initialize.hpp>
#include <boost/geometry/strategies/cartesian/envelope_box.hpp>
#include <boost/geometry/strategies/cartesian/envelope_segment.hpp>
#include <boost/geometry/strategies/cartesian/expand_box.hpp>
#include <boost/geometry/strategies/cartesian/expand_segment.hpp>
namespace boost { namespace geometry
{
namespace strategy { namespace envelope
{
template <typename CalculationType = void>
class cartesian
{
public:
typedef cartesian_tag cs_tag;
typedef cartesian_point element_envelope_strategy_type;
static inline element_envelope_strategy_type get_element_envelope_strategy()
{
return element_envelope_strategy_type();
}
typedef expand::cartesian_point element_expand_strategy_type;
static inline element_expand_strategy_type get_element_expand_strategy()
{
return element_expand_strategy_type();
}
typedef expand::cartesian_box box_expand_strategy_type;
static inline box_expand_strategy_type get_box_expand_strategy()
{
return box_expand_strategy_type();
}
// Linestring, Ring, Polygon
template <typename Range>
static inline typename boost::range_iterator<Range const>::type begin(Range const& range)
{
return boost::begin(range);
}
template <typename Range>
static inline typename boost::range_iterator<Range const>::type end(Range const& range)
{
return boost::end(range);
}
// MultiLinestring, MultiPolygon
template <typename Box>
struct multi_state
{
multi_state()
: m_initialized(false)
{}
void apply(Box const& single_box)
{
if (! m_initialized)
{
m_box = single_box;
m_initialized = true;
}
else
{
box_expand_strategy_type::apply(m_box, single_box);
}
}
void result(Box & box)
{
if (m_initialized)
{
box = m_box;
}
else
{
geometry::detail::envelope::initialize<Box, 0, dimension<Box>::value>::apply(box);
}
}
private:
bool m_initialized;
Box m_box;
};
// Segment
template <typename Point1, typename Point2, typename Box>
static inline void apply(Point1 const& point1, Point2 const& point2,
Box& box)
{
cartesian_segment<CalculationType>::apply(point1, point2, box);
}
// Box
template <typename BoxIn, typename Box>
static inline void apply(BoxIn const& box_in, Box& box)
{
cartesian_box::apply(box_in, box);
}
};
#ifndef DOXYGEN_NO_STRATEGY_SPECIALIZATIONS
namespace services
{
template <typename Tag, typename CalculationType>
struct default_strategy<Tag, cartesian_tag, CalculationType>
{
typedef strategy::envelope::cartesian<CalculationType> type;
};
} // namespace services
#endif // DOXYGEN_NO_STRATEGY_SPECIALIZATIONS
}} // namespace strategy::envelope
}} //namepsace boost::geometry
#endif // BOOST_GEOMETRY_STRATEGIES_CARTESIAN_ENVELOPE_HPP
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