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- // 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_SIMPLE_MULTIPOINT_HPP
- #define BOOST_GEOMETRY_ALGORITHMS_DETAIL_IS_SIMPLE_MULTIPOINT_HPP
- #include <algorithm>
- #include <boost/range.hpp>
- #include <boost/geometry/core/closure.hpp>
- #include <boost/geometry/core/tags.hpp>
- #include <boost/geometry/core/tags.hpp>
- #include <boost/geometry/policies/compare.hpp>
- #include <boost/geometry/algorithms/detail/is_valid/has_duplicates.hpp>
- #include <boost/geometry/algorithms/detail/is_simple/failure_policy.hpp>
- #include <boost/geometry/algorithms/dispatch/is_simple.hpp>
- namespace boost { namespace geometry
- {
- #ifndef DOXYGEN_NO_DETAIL
- namespace detail { namespace is_simple
- {
- template <typename MultiPoint>
- struct is_simple_multipoint
- {
- template <typename Strategy>
- static inline bool apply(MultiPoint const& multipoint, Strategy const&)
- {
- typedef typename Strategy::cs_tag cs_tag;
- typedef geometry::less
- <
- typename point_type<MultiPoint>::type,
- -1,
- cs_tag
- > less_type;
- if (boost::empty(multipoint))
- {
- return true;
- }
- MultiPoint mp(multipoint);
- std::sort(boost::begin(mp), boost::end(mp), less_type());
- simplicity_failure_policy policy;
- return !detail::is_valid::has_duplicates
- <
- MultiPoint, closed, cs_tag
- >::apply(mp, policy);
- }
- };
- }} // namespace detail::is_simple
- #endif // DOXYGEN_NO_DETAIL
- #ifndef DOXYGEN_NO_DISPATCH
- namespace dispatch
- {
- // A MultiPoint is simple if no two Points in the MultiPoint are equal
- // (have identical coordinate values in X and Y)
- //
- // Reference: OGC 06-103r4 (6.1.5)
- template <typename MultiPoint>
- struct is_simple<MultiPoint, multi_point_tag>
- : detail::is_simple::is_simple_multipoint<MultiPoint>
- {};
- } // namespace dispatch
- #endif // DOXYGEN_NO_DISPATCH
- }} // namespace boost::geometry
- #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_IS_SIMPLE_MULTIPOINT_HPP
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