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 //[make_inverse
11 //` Usage of make_inverse and expand to conveniently determine bounding box of several objects
12
13 #include <iostream>
14
15 #include <boost/geometry.hpp>
16 #include <boost/geometry/geometries/box.hpp>
17 #include <boost/geometry/geometries/point_xy.hpp>
18
19 using namespace boost::geometry;
20
main()21 int main()
22 {
23
24 typedef model::d2::point_xy<double> point;
25 typedef model::box<point> box;
26
27 box all = make_inverse<box>();
28 std::cout << dsv(all) << std::endl;
29 expand(all, make<box>(0, 0, 3, 4));
30 expand(all, make<box>(2, 2, 5, 6));
31 std::cout << dsv(all) << std::endl;
32
33 return 0;
34 }
35
36 //]
37
38
39 //[make_inverse_output
40 /*`
41 Output:
42 [pre
43 ((1.79769e+308, 1.79769e+308), (-1.79769e+308, -1.79769e+308))
44 ((0, 0), (5, 6))
45 ]
46 */
47 //]
48