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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 | //[assign_point_from_index | |
11 | //` Shows how to retrieve one point from a box (either lower-left or upper-right) or segment | |
12 | ||
13 | #include <iostream> | |
14 | ||
15 | #include <boost/geometry.hpp> | |
16 | #include <boost/geometry/geometries/point_xy.hpp> | |
17 | #include <boost/geometry/geometries/segment.hpp> | |
18 | ||
19 | using namespace boost::geometry; | |
20 | ||
21 | int main() | |
22 | { | |
23 | typedef model::d2::point_xy<double> point; | |
24 | typedef model::segment<point> segment; | |
25 | ||
26 | segment s; | |
27 | assign_values(s, 1, 1, 2, 2); | |
28 | ||
29 | point first, second; | |
30 | assign_point_from_index<0>(s, first); | |
31 | assign_point_from_index<1>(s, second); | |
32 | std::cout | |
33 | << "segment: " << dsv(s) << std::endl | |
34 | << "first: " << dsv(first) << std::endl | |
35 | << "second: " << dsv(second) << std::endl; | |
36 | ||
37 | return 0; | |
38 | } | |
39 | ||
40 | //] | |
41 | ||
42 | ||
43 | //[assign_point_from_index_output | |
44 | /*` | |
45 | Output: | |
46 | [pre | |
47 | segment: ((1, 1), (2, 2)) | |
48 | first: (1, 1) | |
49 | second: (2, 2) | |
50 | ] | |
51 | */ | |
52 | //] |