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/Src/Dependencies/Boost/libs/geometry/doc/src/examples/algorithms/within.cpp

http://hadesmem.googlecode.com/
C++ | 52 lines | 20 code | 12 blank | 20 comment | 0 complexity | ad0babcfac149a6fcacd9ae85bf8b209 MD5 | raw file
 1// Boost.Geometry (aka GGL, Generic Geometry Library)
 2// QuickBook Example
 3
 4// Copyright (c) 2011 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
20#include <boost/geometry/domains/gis/io/wkt/wkt.hpp>
21/*<-*/ #include "create_svg_two.hpp" /*->*/
22
23int main()
24{
25    typedef boost::geometry::model::d2::point_xy<double> point_type;
26    typedef boost::geometry::model::polygon<point_type> polygon_type;
27
28    polygon_type poly;
29    boost::geometry::read_wkt(
30        "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)"
31            "(4.0 2.0, 4.2 1.4, 4.8 1.9, 4.4 2.2, 4.0 2.0))", poly);
32
33    point_type p(4, 1);
34
35    std::cout << "within: " << (boost::geometry::within(p, poly) ? "yes" : "no") << std::endl;
36    /*<-*/ create_svg("within.svg", poly, p); /*->*/
37    return 0;
38}
39
40//]
41
42//[within_output
43/*`
44Output:
45[pre
46within: yes
47
48[$img/algorithms/within.png]
49]
50
51*/
52//]