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 //[envelope
11 //` Shows how to calculate the bounding box of a polygon
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 #include <boost/geometry/geometries/polygon.hpp>
19 /*<-*/ #include "create_svg_two.hpp" /*->*/
20
main()21 int main()
22 {
23 typedef boost::geometry::model::d2::point_xy<double> point;
24
25 boost::geometry::model::polygon<point> polygon;
26
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))", polygon);
30
31 boost::geometry::model::box<point> box;
32 boost::geometry::envelope(polygon, box);
33
34 std::cout << "envelope:" << boost::geometry::dsv(box) << std::endl;
35
36 /*<-*/ create_svg("envelope.svg", polygon, box); /*->*/
37 return 0;
38 }
39
40 //]
41
42
43 //[envelope_output
44 /*`
45 Output:
46 [pre
47 envelope:((2, 0.7), (5.4, 3))
48
49 [$img/algorithms/envelope.png]
50 ]
51 */
52 //]
53
54
