57 lines
1.5 KiB
C++
57 lines
1.5 KiB
C++
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// Boost.Geometry
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// Copyright (c) 2021, Oracle and/or its affiliates.
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// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
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// Licensed under the Boost Software License version 1.0.
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// http://www.boost.org/users/license.html
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#ifndef BOOST_GEOMETRY_STRATEGY_CARTESIAN_ENVELOPE_RANGE_HPP
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#define BOOST_GEOMETRY_STRATEGY_CARTESIAN_ENVELOPE_RANGE_HPP
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#include <boost/range/begin.hpp>
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#include <boost/range/end.hpp>
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#include <boost/geometry/algorithms/detail/envelope/initialize.hpp>
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#include <boost/geometry/strategy/cartesian/envelope_point.hpp>
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#include <boost/geometry/strategy/cartesian/expand_point.hpp>
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namespace boost { namespace geometry
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{
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namespace strategy { namespace envelope
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{
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class cartesian_range
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{
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public:
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template <typename Range, typename Box>
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static inline void apply(Range const& range, Box& mbr)
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{
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auto it = boost::begin(range);
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auto const end = boost::end(range);
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if (it == end)
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{
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// initialize box (assign inverse)
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geometry::detail::envelope::initialize<Box>::apply(mbr);
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return;
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}
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// initialize box with the first point
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envelope::cartesian_point::apply(*it, mbr);
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// consider now the remaining points in the range (if any)
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for (++it; it != end; ++it)
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{
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expand::cartesian_point::apply(mbr, *it);
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}
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}
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};
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}} // namespace strategy::envelope
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}} //namepsace boost::geometry
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#endif // BOOST_GEOMETRY_STRATEGY_CARTESIAN_ENVELOPE_RANGE_HPP
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