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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 | ||
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 | //] |