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151
include/boost/geometry/algorithms/detail/is_valid/has_invalid_coordinate.hpp
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// Boost.Geometry (aka GGL, Generic Geometry Library) | ||
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// Copyright (c) 2014-2015, Oracle and/or its affiliates. | ||
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// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle | ||
// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle | ||
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// Licensed under the Boost Software License version 1.0. | ||
// http://www.boost.org/users/license.html | ||
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#ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_IS_VALID_HAS_INVALID_COORDINATE_HPP | ||
#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_IS_VALID_HAS_INVALID_COORDINATE_HPP | ||
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#include <cstddef> | ||
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#include <boost/type_traits/is_floating_point.hpp> | ||
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#include <boost/geometry/core/coordinate_type.hpp> | ||
#include <boost/geometry/core/point_type.hpp> | ||
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#include <boost/geometry/util/has_non_finite_coordinate.hpp> | ||
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#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> | ||
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namespace boost { namespace geometry | ||
{ | ||
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#ifndef DOXYGEN_NO_DETAIL | ||
namespace detail { namespace is_valid | ||
{ | ||
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struct always_valid | ||
{ | ||
template <typename Geometry, typename VisitPolicy> | ||
static inline bool apply(Geometry const&, VisitPolicy& visitor) | ||
{ | ||
return ! visitor.template apply<no_failure>(); | ||
} | ||
}; | ||
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struct point_has_invalid_coordinate | ||
{ | ||
template <typename Point, typename VisitPolicy> | ||
static inline bool apply(Point const& point, VisitPolicy& visitor) | ||
{ | ||
boost::ignore_unused(visitor); | ||
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return | ||
geometry::has_non_finite_coordinate(point) | ||
? | ||
(! visitor.template apply<failure_invalid_coordinate>()) | ||
: | ||
(! visitor.template apply<no_failure>()); | ||
} | ||
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template <typename Point> | ||
static inline bool apply(Point const& point) | ||
{ | ||
return geometry::has_non_finite_coordinate(point); | ||
} | ||
}; | ||
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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); | ||
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return point_has_invalid_coordinate::apply(p0, visitor) | ||
|| point_has_invalid_coordinate::apply(p1, visitor); | ||
} | ||
}; | ||
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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); | ||
} | ||
}; | ||
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template <typename Geometry, typename VisitPolicy> | ||
static inline bool apply(Geometry const& geometry, VisitPolicy& visitor) | ||
{ | ||
boost::ignore_unused(visitor); | ||
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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)); | ||
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return has_valid_coordinates | ||
? | ||
(! visitor.template apply<no_failure>()) | ||
: | ||
(! visitor.template apply<failure_invalid_coordinate>()); | ||
} | ||
}; | ||
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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 | ||
{}; | ||
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template <typename Geometry, typename Tag> | ||
struct has_invalid_coordinate<Geometry, Tag, false> | ||
: always_valid | ||
{}; | ||
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template <typename Point> | ||
struct has_invalid_coordinate<Point, point_tag, true> | ||
: point_has_invalid_coordinate | ||
{}; | ||
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template <typename Segment> | ||
struct has_invalid_coordinate<Segment, segment_tag, true> | ||
: indexed_has_invalid_coordinate | ||
{}; | ||
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template <typename Box> | ||
struct has_invalid_coordinate<Box, box_tag, true> | ||
: indexed_has_invalid_coordinate | ||
{}; | ||
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}} // namespace detail::is_valid | ||
#endif // DOXYGEN_NO_DETAIL | ||
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}} // namespace boost::geometry | ||
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#endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_IS_VALID_HAS_INVALID_COORDINATE_HPP |
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