]>
Commit | Line | Data |
---|---|---|
7c673cae FG |
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 | //[within | |
11 | //` Shows how to detect if a point is inside a polygon, or not | |
12 | ||
13 | #include <iostream> | |
14 | #include <list> | |
15 | ||
16 | #include <boost/geometry.hpp> | |
17 | #include <boost/geometry/geometries/point_xy.hpp> | |
18 | #include <boost/geometry/geometries/polygon.hpp> | |
19 | /*<-*/ #include "create_svg_two.hpp" /*->*/ | |
20 | ||
21 | int main() | |
22 | { | |
23 | typedef boost::geometry::model::d2::point_xy<double> point_type; | |
24 | typedef boost::geometry::model::polygon<point_type> polygon_type; | |
25 | ||
26 | polygon_type poly; | |
27 | boost::geometry::read_wkt( | |
28 | "POLYGON((2 1.3,2.4 1.7,2.8 1.8,3.4 1.2,3.7 1.6,3.4 2,4.1 3,5.3 2.6,5.4 1.2,4.9 0.8,2.9 0.7,2 1.3)" | |
29 | "(4.0 2.0, 4.2 1.4, 4.8 1.9, 4.4 2.2, 4.0 2.0))", poly); | |
30 | ||
31 | point_type p(4, 1); | |
32 | ||
33 | std::cout << "within: " << (boost::geometry::within(p, poly) ? "yes" : "no") << std::endl; | |
34 | /*<-*/ create_svg("within.svg", poly, p); /*->*/ | |
35 | return 0; | |
36 | } | |
37 | ||
38 | //] | |
39 | ||
40 | //[within_output | |
41 | /*` | |
42 | Output: | |
43 | [pre | |
44 | within: yes | |
45 | ||
46 | [$img/algorithms/within.png] | |
47 | ] | |
48 | ||
49 | */ | |
50 | //] |