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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 | // Copyright (c) 2014 Adam Wulkiewicz, Lodz, Poland. | |
6 | ||
7 | // Use, modification and distribution is subject to the Boost Software License, | |
8 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
9 | // http://www.boost.org/LICENSE_1_0.txt) | |
10 | ||
11 | //[boost_polygon_ring | |
12 | //`Shows how to use Boost.Polygon polygon_data within Boost.Geometry | |
13 | ||
14 | #include <iostream> | |
15 | #include <boost/geometry.hpp> | |
16 | #include <boost/geometry/geometries/adapted/boost_polygon.hpp> | |
17 | ||
18 | int main() | |
19 | { | |
20 | typedef boost::polygon::polygon_data<int> polygon; | |
21 | typedef boost::polygon::polygon_traits<polygon>::point_type point; | |
22 | ||
23 | point pts[5] = { | |
24 | boost::polygon::construct<point>(0, 0), | |
25 | boost::polygon::construct<point>(0, 10), | |
26 | boost::polygon::construct<point>(10, 10), | |
27 | boost::polygon::construct<point>(10, 0), | |
28 | boost::polygon::construct<point>(0, 0) | |
29 | }; | |
30 | ||
31 | polygon poly; | |
32 | boost::polygon::set_points(poly, pts, pts+5); | |
33 | ||
34 | std::cout << "Area (using Boost.Geometry): " | |
35 | << boost::geometry::area(poly) << std::endl; | |
36 | std::cout << "Area (using Boost.Polygon): " | |
37 | << boost::polygon::area(poly) << std::endl; | |
38 | ||
39 | return 0; | |
40 | } | |
41 | ||
42 | //] | |
43 | ||
44 | //[boost_polygon_ring_output | |
45 | /*` | |
46 | Output: | |
47 | [pre | |
48 | Area (using Boost.Geometry): 100 | |
49 | Area (using Boost.Polygon): 100 | |
50 | ] | |
51 | */ | |
52 | //] |