diff options
Diffstat (limited to 'boost/geometry/multi/algorithms/centroid.hpp')
| -rw-r--r-- | boost/geometry/multi/algorithms/centroid.hpp | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/boost/geometry/multi/algorithms/centroid.hpp b/boost/geometry/multi/algorithms/centroid.hpp index 855ed22fda..1c9902f2bf 100644 --- a/boost/geometry/multi/algorithms/centroid.hpp +++ b/boost/geometry/multi/algorithms/centroid.hpp @@ -15,163 +15,7 @@ #define BOOST_GEOMETRY_MULTI_ALGORITHMS_CENTROID_HPP -#include <boost/range.hpp> - #include <boost/geometry/algorithms/centroid.hpp> -#include <boost/geometry/multi/core/point_type.hpp> -#include <boost/geometry/multi/algorithms/num_points.hpp> - - -namespace boost { namespace geometry -{ - - -#ifndef DOXYGEN_NO_DETAIL -namespace detail { namespace centroid -{ - - -/*! - \brief Building block of a multi-point, to be used as Policy in the - more generec centroid_multi -*/ -template -< - typename Point, - typename Strategy -> -struct centroid_multi_point_state -{ - static inline void apply(Point const& point, - Strategy const& strategy, typename Strategy::state_type& state) - { - strategy.apply(point, state); - } -}; - - - -/*! - \brief Generic implementation which calls a policy to calculate the - centroid of the total of its single-geometries - \details The Policy is, in general, the single-version, with state. So - detail::centroid::centroid_polygon_state is used as a policy for this - detail::centroid::centroid_multi - -*/ -template -< - typename Multi, - typename Point, - typename Strategy, - typename Policy -> -struct centroid_multi -{ - static inline void apply(Multi const& multi, Point& centroid, - Strategy const& strategy) - { -#if ! defined(BOOST_GEOMETRY_CENTROID_NO_THROW) - // If there is nothing in any of the ranges, it is not possible - // to calculate the centroid - if (geometry::num_points(multi) == 0) - { - throw centroid_exception(); - } -#endif - - typename Strategy::state_type state; - - for (typename boost::range_iterator<Multi const>::type - it = boost::begin(multi); - it != boost::end(multi); - ++it) - { - Policy::apply(*it, strategy, state); - } - Strategy::result(state, centroid); - } -}; - - - -}} // namespace detail::centroid -#endif // DOXYGEN_NO_DETAIL - - - -#ifndef DOXYGEN_NO_DISPATCH -namespace dispatch -{ - -template -< - typename MultiLinestring, - typename Point, - typename Strategy -> -struct centroid<multi_linestring_tag, MultiLinestring, Point, Strategy> - : detail::centroid::centroid_multi - < - MultiLinestring, - Point, - Strategy, - detail::centroid::centroid_range_state - < - typename boost::range_value<MultiLinestring>::type, - closed, - Strategy - > - > -{}; - -template -< - typename MultiPolygon, - typename Point, - typename Strategy -> -struct centroid<multi_polygon_tag, MultiPolygon, Point, Strategy> - : detail::centroid::centroid_multi - < - MultiPolygon, - Point, - Strategy, - detail::centroid::centroid_polygon_state - < - typename boost::range_value<MultiPolygon>::type, - Strategy - > - > -{}; - - -template -< - typename MultiPoint, - typename Point, - typename Strategy -> -struct centroid<multi_point_tag, MultiPoint, Point, Strategy> - : detail::centroid::centroid_multi - < - MultiPoint, - Point, - Strategy, - detail::centroid::centroid_multi_point_state - < - typename boost::range_value<MultiPoint>::type, - Strategy - > - > -{}; - - -} // namespace dispatch -#endif - - -}} // namespace boost::geometry #endif // BOOST_GEOMETRY_MULTI_ALGORITHMS_CENTROID_HPP |