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// Boost.Geometry (aka GGL, Generic Geometry Library)
// QuickBook Example
// Copyright (c) 2011-2012 Barend Gehrels, 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)
//[num_points
//` Get the number of points in a geometry
#include <iostream>
#include <boost/geometry.hpp>
#include <boost/geometry/geometries/point_xy.hpp>
#include <boost/geometry/geometries/polygon.hpp>
#include <boost/geometry/geometries/multi_polygon.hpp>
int main()
{
boost::geometry::model::multi_polygon
<
boost::geometry::model::polygon
<
boost::geometry::model::d2::point_xy<double>
>
> mp;
boost::geometry::read_wkt("MULTIPOLYGON(((0 0,0 10,10 0,0 0),(1 1,1 9,9 1,1 1)),((10 10,10 7,7 10,10 10)))", mp);
std::cout << "Number of points: " << boost::geometry::num_points(mp) << std::endl;
return 0;
}
//]
//[num_points_output
/*`
Output:
[pre
Number of points: 12
]
*/
//]
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