1 // Boost.Geometry (aka GGL, Generic Geometry Library)
2 // QuickBook Example
3
4 // Copyright (c) 2011-2012 Barend Gehrels, Amsterdam, the Netherlands.
5
6 // Use, modification and distribution is subject to the Boost Software License,
7 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
8 // http://www.boost.org/LICENSE_1_0.txt)
9
10 //[boost_range_sliced
11 //` Shows how to use a Boost.Geometry linestring, sliced by Boost.Range adaptor
12
13 #include <iostream>
14
15 #include <boost/geometry.hpp>
16 #include <boost/geometry/geometries/linestring.hpp>
17 #include <boost/geometry/geometries/point_xy.hpp>
18 #include <boost/geometry/geometries/adapted/boost_range/sliced.hpp>
19
20 #include <boost/assign.hpp> /*< At the end to avoid conflicts with Boost.QVM >*/
21
22
main()23 int main()
24 {
25 using namespace boost::assign;
26
27 typedef boost::geometry::model::d2::point_xy<int> xy;
28 boost::geometry::model::linestring<xy> line;
29 line += xy(0, 0);
30 line += xy(1, 1);
31 line += xy(2, 2);
32 line += xy(3, 3);
33 line += xy(4, 4);
34
35 std::cout
36 << boost::geometry::dsv(line | boost::adaptors::sliced(1, 3)) << std::endl;
37
38 return 0;
39 }
40
41 //]
42
43 //[boost_range_sliced_output
44 /*`
45 Output:
46 [pre
47 ((1, 1), (2, 2))
48 ]
49 */
50 //]
51