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 //[expand
11 //` Shows the usage of expand
12
13 #include <iostream>
14 #include <list>
15
16 #include <boost/geometry.hpp>
17 #include <boost/geometry/geometries/box.hpp>
18 #include <boost/geometry/geometries/point_xy.hpp>
19
main()20 int main()
21 {
22 typedef boost::geometry::model::d2::point_xy<short int> point_type;
23 typedef boost::geometry::model::box<point_type> box_type;
24
25 using boost::geometry::expand;
26
27 box_type box = boost::geometry::make_inverse<box_type>(); /*< expand is usually preceded by a call to assign_inverse or make_inverse >*/
28
29 expand(box, point_type(0, 0));
30 expand(box, point_type(1, 2));
31 expand(box, point_type(5, 4));
32 expand(box, boost::geometry::make<box_type>(3, 3, 5, 5));
33
34 std::cout << boost::geometry::dsv(box) << std::endl;
35
36 return 0;
37 }
38
39 //]
40
41 //[expand_output
42 /*`
43 Output:
44 [pre
45 ((0, 0), (5, 5))
46 ]
47 */
48 //]
49