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// Boost.Geometry (aka GGL, Generic Geometry Library)
// Copyright (c) 2014-2015, 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_INVALID_COORDINATE_HPP
#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_IS_VALID_HAS_INVALID_COORDINATE_HPP
#include <cstddef>
#include <boost/type_traits/is_floating_point.hpp>
#include <boost/geometry/core/coordinate_type.hpp>
#include <boost/geometry/core/point_type.hpp>
#include <boost/geometry/util/has_non_finite_coordinate.hpp>
#include <boost/geometry/iterators/point_iterator.hpp>
#include <boost/geometry/views/detail/indexed_point_view.hpp>
#include <boost/geometry/algorithms/detail/check_iterator_range.hpp>
namespace boost { namespace geometry
{
#ifndef DOXYGEN_NO_DETAIL
namespace detail { namespace is_valid
{
struct always_valid
{
template <typename Geometry, typename VisitPolicy>
static inline bool apply(Geometry const&, VisitPolicy& visitor)
{
return ! visitor.template apply<no_failure>();
}
};
struct point_has_invalid_coordinate
{
template <typename Point, typename VisitPolicy>
static inline bool apply(Point const& point, VisitPolicy& visitor)
{
boost::ignore_unused(visitor);
return
geometry::has_non_finite_coordinate(point)
?
(! visitor.template apply<failure_invalid_coordinate>())
:
(! visitor.template apply<no_failure>());
}
template <typename Point>
static inline bool apply(Point const& point)
{
return geometry::has_non_finite_coordinate(point);
}
};
struct indexed_has_invalid_coordinate
{
template <typename Geometry, typename VisitPolicy>
static inline bool apply(Geometry const& geometry, VisitPolicy& visitor)
{
geometry::detail::indexed_point_view<Geometry const, 0> p0(geometry);
geometry::detail::indexed_point_view<Geometry const, 1> p1(geometry);
return point_has_invalid_coordinate::apply(p0, visitor)
|| point_has_invalid_coordinate::apply(p1, visitor);
}
};
struct range_has_invalid_coordinate
{
struct point_has_valid_coordinates
{
template <typename Point>
static inline bool apply(Point const& point)
{
return ! point_has_invalid_coordinate::apply(point);
}
};
template <typename Geometry, typename VisitPolicy>
static inline bool apply(Geometry const& geometry, VisitPolicy& visitor)
{
boost::ignore_unused(visitor);
bool const has_valid_coordinates = detail::check_iterator_range
<
point_has_valid_coordinates,
true // do not consider an empty range as problematic
>::apply(geometry::points_begin(geometry),
geometry::points_end(geometry));
return has_valid_coordinates
?
(! visitor.template apply<no_failure>())
:
(! visitor.template apply<failure_invalid_coordinate>());
}
};
template
<
typename Geometry,
typename Tag = typename tag<Geometry>::type,
bool HasFloatingPointCoordinates = boost::is_floating_point
<
typename coordinate_type<Geometry>::type
>::value
>
struct has_invalid_coordinate
: range_has_invalid_coordinate
{};
template <typename Geometry, typename Tag>
struct has_invalid_coordinate<Geometry, Tag, false>
: always_valid
{};
template <typename Point>
struct has_invalid_coordinate<Point, point_tag, true>
: point_has_invalid_coordinate
{};
template <typename Segment>
struct has_invalid_coordinate<Segment, segment_tag, true>
: indexed_has_invalid_coordinate
{};
template <typename Box>
struct has_invalid_coordinate<Box, box_tag, true>
: indexed_has_invalid_coordinate
{};
}} // namespace detail::is_valid
#endif // DOXYGEN_NO_DETAIL
}} // namespace boost::geometry
#endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_IS_VALID_HAS_INVALID_COORDINATE_HPP
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