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 //[degree_radian
11 //` Specify two coordinate systems, one in degrees, one in radians.
12
13 #include <iostream>
14 #include <boost/geometry.hpp>
15
16 using namespace boost::geometry;
17
main()18 int main()
19 {
20 typedef model::point<double, 2, cs::spherical_equatorial<degree> > degree_point;
21 typedef model::point<double, 2, cs::spherical_equatorial<radian> > radian_point;
22
23 degree_point d(4.893, 52.373);
24 radian_point r(0.041, 0.8527);
25
26 double dist = distance(d, r);
27 std::cout
28 << "distance:" << std::endl
29 << dist << " over unit sphere" << std::endl
30 << dist * 3959 << " over a spherical earth, in miles" << std::endl;
31
32 return 0;
33 }
34
35 //]
36
37
38 //[degree_radian_output
39 /*`
40 Output:
41 [pre
42 distance:
43 0.0675272 over unit sphere
44 267.34 over a spherical earth, in miles
45 ]
46 */
47 //]
48