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 //[register_box_2d_4values
11 //` Show the use of the macro BOOST_GEOMETRY_REGISTER_BOX_2D_4VALUES
12
13 #include <iostream>
14 #include <boost/geometry.hpp>
15 #include <boost/geometry/geometries/register/point.hpp>
16 #include <boost/geometry/geometries/register/box.hpp>
17
18 struct my_point
19 {
20 int x, y;
21 };
22
23 struct my_box
24 {
25 int left, top, right, bottom;
26 };
27
BOOST_GEOMETRY_REGISTER_POINT_2D(my_point,int,cs::cartesian,x,y)28 BOOST_GEOMETRY_REGISTER_POINT_2D(my_point, int, cs::cartesian, x, y)
29
30 // Register the box type, also notifying that it is based on "my_point"
31 // (even if it does not contain it)
32 BOOST_GEOMETRY_REGISTER_BOX_2D_4VALUES(my_box, my_point, left, top, right, bottom)
33
34 int main()
35 {
36 my_box b = boost::geometry::make<my_box>(0, 0, 2, 2);
37 std::cout << "Area: " << boost::geometry::area(b) << std::endl;
38 return 0;
39 }
40
41 //]
42
43
44 //[register_box_2d_4values_output
45 /*`
46 Output:
47 [pre
48 Area: 4
49 ]
50 */
51 //]
52