/usr/include/boost/geometry/algorithms/detail/is_valid
Edit: /usr/include/boost/geometry/algorithms/detail/is_valid/has_valid_self_turns.hpp (3884B)
// Boost.Geometry (aka GGL, Generic Geometry Library)
// Copyright (c) 2014-2019, 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_DETAIL_IS_VALID_HAS_VALID_SELF_TURNS_HPP
#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_IS_VALID_HAS_VALID_SELF_TURNS_HPP
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
namespace boost { namespace geometry
{
#ifndef DOXYGEN_NO_DETAIL
namespace detail { namespace is_valid
{
template
<
typename Geometry,
typename CSTag
>
class has_valid_self_turns
{
private:
typedef typename point_type::type point_type;
typedef typename geometry::rescale_policy_type
<
point_type,
CSTag
>::type rescale_policy_type;
typedef detail::overlay::get_turn_info
<
detail::overlay::assign_null_policy
> turn_policy;
public:
typedef detail::overlay::turn_info
<
point_type,
typename segment_ratio_type
<
point_type,
rescale_policy_type
>::type
> turn_type;
// returns true if all turns are valid
template
static inline bool apply(Geometry const& geometry,
Turns& turns,
VisitPolicy& visitor,
Strategy const& strategy)
{
boost::ignore_unused(visitor);
rescale_policy_type robust_policy
= geometry::get_rescale_policy(geometry, strategy);
detail::overlay::stateless_predicate_based_interrupt_policy
<
is_acceptable_turn
> interrupt_policy;
// Calculate self-turns, skipping adjacent segments
detail::self_get_turn_points::self_turns(geometry,
strategy,
robust_policy,
turns,
interrupt_policy,
0, true);
if (interrupt_policy.has_intersections)
{
BOOST_GEOMETRY_ASSERT(! boost::empty(turns));
return visitor.template apply(turns);
}
else
{
return visitor.template apply();
}
}
// returns true if all turns are valid
template
static inline bool apply(Geometry const& geometry, VisitPolicy& visitor, Strategy const& strategy)
{
std::vector turns;
return apply(geometry, turns, visitor, strategy);
}
};
}} // namespace detail::is_valid
#endif // DOXYGEN_NO_DETAIL
}} // namespace boost::geometry
#endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_IS_VALID_HAS_VALID_SELF_TURNS_HPP