Added boost header

test/external/boost/geometry/algorithms/num_points.hpp

@@ -0,0 +1,171 @@
+// Boost.Geometry (aka GGL, Generic Geometry Library)
+
+// Copyright (c) 2007-2011 Barend Gehrels, Amsterdam, the Netherlands.
+// Copyright (c) 2008-2011 Bruno Lalande, Paris, France.
+// Copyright (c) 2009-2011 Mateusz Loskot, London, UK.
+
+// Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
+// (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
+
+// Use, modification and distribution is subject to the Boost Software License,
+// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_GEOMETRY_ALGORITHMS_NUM_POINTS_HPP
+#define BOOST_GEOMETRY_ALGORITHMS_NUM_POINTS_HPP
+
+#include <cstddef>
+
+#include <boost/mpl/assert.hpp>
+#include <boost/range.hpp>
+#include <boost/typeof/typeof.hpp>
+
+#include <boost/geometry/core/closure.hpp>
+#include <boost/geometry/core/exterior_ring.hpp>
+#include <boost/geometry/core/interior_rings.hpp>
+#include <boost/geometry/core/ring_type.hpp>
+#include <boost/geometry/core/tag_cast.hpp>
+
+#include <boost/geometry/algorithms/disjoint.hpp>
+#include <boost/geometry/geometries/concepts/check.hpp>
+
+
+namespace boost { namespace geometry
+{
+
+#ifndef DOXYGEN_NO_DETAIL
+namespace detail { namespace num_points
+{
+
+
+template <typename Range>
+struct range_count
+{
+    static inline std::size_t apply(Range const& range, bool add_for_open)
+    {
+        std::size_t n = boost::size(range);
+        if (add_for_open && n > 0)
+        {
+            closure_selector const s = geometry::closure<Range>::value;
+
+            if (s == open)
+            {
+                if (geometry::disjoint(*boost::begin(range), *(boost::begin(range) + n - 1)))
+                {
+                    return n + 1;
+                }
+            }
+        }
+        return n;
+    }
+};
+
+template <typename Geometry, std::size_t D>
+struct other_count
+{
+    static inline std::size_t apply(Geometry const&, bool)
+    {
+        return D;
+    }
+};
+
+template <typename Polygon>
+struct polygon_count
+{
+    static inline std::size_t apply(Polygon const& poly, bool add_for_open)
+    {
+        typedef typename geometry::ring_type<Polygon>::type ring_type;
+
+        std::size_t n = range_count<ring_type>::apply(
+                    exterior_ring(poly), add_for_open);
+
+        typename interior_return_type<Polygon const>::type rings
+                    = interior_rings(poly);
+        for (BOOST_AUTO_TPL(it, boost::begin(rings)); it != boost::end(rings); ++it)
+        {
+            n += range_count<ring_type>::apply(*it, add_for_open);
+        }
+
+        return n;
+    }
+};
+
+}} // namespace detail::num_points
+#endif // DOXYGEN_NO_DETAIL
+
+
+#ifndef DOXYGEN_NO_DISPATCH
+namespace dispatch
+{
+
+template <typename GeometryTag, typename Geometry>
+struct num_points
+{
+    BOOST_MPL_ASSERT_MSG
+        (
+            false, NOT_OR_NOT_YET_IMPLEMENTED_FOR_THIS_GEOMETRY_TYPE
+            , (types<Geometry>)
+        );
+};
+
+template <typename Geometry>
+struct num_points<point_tag, Geometry>
+        : detail::num_points::other_count<Geometry, 1>
+{};
+
+template <typename Geometry>
+struct num_points<box_tag, Geometry>
+        : detail::num_points::other_count<Geometry, 4>
+{};
+
+template <typename Geometry>
+struct num_points<segment_tag, Geometry>
+        : detail::num_points::other_count<Geometry, 2>
+{};
+
+template <typename Geometry>
+struct num_points<linestring_tag, Geometry>
+        : detail::num_points::range_count<Geometry>
+{};
+
+template <typename Geometry>
+struct num_points<ring_tag, Geometry>
+        : detail::num_points::range_count<Geometry>
+{};
+
+template <typename Geometry>
+struct num_points<polygon_tag, Geometry>
+        : detail::num_points::polygon_count<Geometry>
+{};
+
+} // namespace dispatch
+#endif
+
+
+/*!
+\brief \brief_calc{number of points}
+\ingroup num_points
+\details \details_calc{num_points, number of points}.
+\tparam Geometry \tparam_geometry
+\param geometry \param_geometry
+\param add_for_open add one for open geometries (i.e. polygon types which are not closed)
+\return \return_calc{number of points}
+
+\qbk{[include reference/algorithms/num_points.qbk]}
+*/
+template <typename Geometry>
+inline std::size_t num_points(Geometry const& geometry, bool add_for_open = false)
+{
+    concept::check<Geometry const>();
+
+    return dispatch::num_points
+        <
+            typename tag_cast<typename tag<Geometry>::type, multi_tag>::type,
+            Geometry
+        >::apply(geometry, add_for_open);
+}
+
+}} // namespace boost::geometry
+
+
+#endif // BOOST_GEOMETRY_ALGORITHMS_NUM_POINTS_HPP