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// Boost.Geometry (aka GGL, Generic Geometry Library)
// Copyright (c) 2014, Oracle and/or its affiliates.
// Licensed under the Boost Software License version 1.0.
// http://www.boost.org/users/license.html
// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
#ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_TURNS_REMOVE_DUPLICATE_TURNS_HPP
#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_TURNS_REMOVE_DUPLICATE_TURNS_HPP
#include <algorithm>
#include <boost/geometry/algorithms/equals.hpp>
namespace boost { namespace geometry
{
namespace detail { namespace turns
{
template <typename Turns, bool Enable>
struct remove_duplicate_turns
{
static inline void apply(Turns&) {}
};
template <typename Turns>
class remove_duplicate_turns<Turns, true>
{
private:
struct TurnEqualsTo
{
template <typename Turn>
bool operator()(Turn const& t1, Turn const& t2) const
{
return geometry::equals(t1.point, t2.point)
&& t1.operations[0].seg_id == t2.operations[0].seg_id
&& t1.operations[1].seg_id == t2.operations[1].seg_id;
}
};
public:
static inline void apply(Turns& turns)
{
turns.erase( std::unique(turns.begin(), turns.end(),
TurnEqualsTo()),
turns.end()
);
}
};
}} // namespace detail::turns
}} // namespect boost::geometry
#endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_TURNS_REMOVE_DUPLICATE_TURNS_HPP
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