You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
103 lines
2.7 KiB
C++
103 lines
2.7 KiB
C++
2 years ago
|
// Boost.Geometry (aka GGL, Generic Geometry Library)
|
||
|
|
|
||
|
|
// Copyright (c) 2014-2020, Oracle and/or its affiliates.
|
||
|
|
// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
|
||
|
|
// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
|
||
|
|
|
||
|
|
// Licensed under the Boost Software License version 1.0.
|
||
|
|
// http://www.boost.org/users/license.html
|
||
|
|
|
||
|
|
#ifndef BOOST_GEOMETRY_ALGORITHMS_POLICIES_PREDICATE_BASED_INTERRUPT_POLICY_HPP
|
||
|
|
#define BOOST_GEOMETRY_ALGORITHMS_POLICIES_PREDICATE_BASED_INTERRUPT_POLICY_HPP
|
||
|
|
|
||
|
|
#include <boost/range/begin.hpp>
|
||
|
|
#include <boost/range/end.hpp>
|
||
|
|
|
||
|
|
#include <boost/geometry/algorithms/detail/check_iterator_range.hpp>
|
||
|
|
|
||
|
|
|
||
|
|
namespace boost { namespace geometry
|
||
|
|
{
|
||
|
|
|
||
|
|
|
||
|
|
#ifndef DOXYGEN_NO_DETAIL
|
||
|
|
namespace detail { namespace overlay
|
||
|
|
{
|
||
|
|
|
||
|
|
|
||
|
|
template
|
||
|
|
<
|
||
|
|
typename IsAcceptableTurnPredicate,
|
||
|
|
bool AllowEmptyTurnRange = true // by default, allow an empty turn range
|
||
|
|
>
|
||
|
|
struct stateless_predicate_based_interrupt_policy
|
||
|
|
{
|
||
|
|
static bool const enabled = true;
|
||
|
|
bool has_intersections; // set to true if there is at least one
|
||
|
|
// unacceptable turn
|
||
|
|
|
||
|
|
inline stateless_predicate_based_interrupt_policy()
|
||
|
|
: has_intersections(false)
|
||
|
|
{}
|
||
|
|
|
||
|
|
template <typename Range>
|
||
|
|
inline bool apply(Range const& range)
|
||
|
|
{
|
||
|
|
// if there is at least one unacceptable turn in the range, return false
|
||
|
|
has_intersections = !detail::check_iterator_range
|
||
|
|
<
|
||
|
|
IsAcceptableTurnPredicate,
|
||
|
|
AllowEmptyTurnRange
|
||
|
|
>::apply(boost::begin(range), boost::end(range));
|
||
|
|
|
||
|
|
return has_intersections;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
template
|
||
|
|
<
|
||
|
|
typename IsAcceptableTurnPredicate,
|
||
|
|
bool AllowEmptyTurnRange = true // by default, allow an empty turn range
|
||
|
|
>
|
||
|
|
struct predicate_based_interrupt_policy
|
||
|
|
{
|
||
|
|
static bool const enabled = true;
|
||
|
|
bool has_intersections; // set to true if there is at least one
|
||
|
|
// unacceptable turn
|
||
|
|
IsAcceptableTurnPredicate const& m_predicate;
|
||
|
|
|
||
|
|
inline
|
||
|
|
predicate_based_interrupt_policy(IsAcceptableTurnPredicate const& predicate)
|
||
|
|
: has_intersections(false)
|
||
|
|
, m_predicate(predicate)
|
||
|
|
{}
|
||
|
|
|
||
|
|
template <typename Range>
|
||
|
|
inline bool apply(Range const& range)
|
||
|
|
{
|
||
|
|
// if there is at least one unacceptable turn in the range, return false
|
||
|
|
has_intersections = !detail::check_iterator_range
|
||
|
|
<
|
||
|
|
IsAcceptableTurnPredicate,
|
||
|
|
AllowEmptyTurnRange
|
||
|
|
>::apply(boost::begin(range), boost::end(range), m_predicate);
|
||
|
|
|
||
|
|
return has_intersections;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
}} // namespace detail::overlay
|
||
|
|
#endif // DOXYGEN_NO_DETAIL
|
||
|
|
|
||
|
|
|
||
|
|
}} // namespace boost::geometry
|
||
|
|
|
||
|
|
|
||
|
|
#endif // BOOST_GEOMETRY_ALGORITHMS_POLICIES_PREDICATE_BASED_INTERRUPT_POLICY_HPP
|