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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 | //[make_2d_point | |
11 | //` Shows the usage of make as a generic constructor for different point types | |
12 | ||
13 | #include <iostream> | |
14 | ||
15 | #include <boost/geometry.hpp> | |
16 | #include <boost/geometry/geometries/point_xy.hpp> | |
17 | #include <boost/geometry/geometries/register/point.hpp> | |
18 | #include <boost/geometry/geometries/adapted/boost_tuple.hpp> | |
19 | #include <boost/geometry/geometries/adapted/boost_polygon/point.hpp> | |
20 | ||
21 | BOOST_GEOMETRY_REGISTER_BOOST_TUPLE_CS(cs::cartesian) | |
22 | ||
23 | struct mypoint { float _x, _y; }; | |
24 | ||
25 | BOOST_GEOMETRY_REGISTER_POINT_2D(mypoint, float, cs::cartesian, _x, _y) | |
26 | ||
27 | template <typename Point> | |
28 | void construct_and_display() | |
29 | { | |
30 | using boost::geometry::make; | |
31 | using boost::geometry::get; | |
32 | ||
33 | Point p = make<Point>(1, 2); | |
34 | ||
35 | std::cout << "x=" << get<0>(p) << " y=" << get<1>(p) | |
36 | << " (" << typeid(Point).name() << ")" | |
37 | << std::endl; | |
38 | } | |
39 | ||
40 | int main() | |
41 | { | |
42 | construct_and_display<boost::geometry::model::d2::point_xy<double> >(); | |
43 | construct_and_display<boost::geometry::model::d2::point_xy<int> >(); | |
44 | construct_and_display<boost::tuple<double, double> >(); | |
45 | construct_and_display<boost::polygon::point_data<int> >(); | |
46 | construct_and_display<mypoint>(); | |
47 | return 0; | |
48 | } | |
49 | ||
50 | //] | |
51 | ||
52 | //[make_2d_point_output | |
53 | /*` | |
54 | Output (compiled using gcc): | |
55 | [pre | |
56 | x=1 y=2 (N5boost8geometry5model2d28point_xyIdNS0_2cs9cartesianEEE) | |
57 | x=1 y=2 (N5boost8geometry5model2d28point_xyIiNS0_2cs9cartesianEEE) | |
58 | x=1 y=2 (N5boost6tuples5tupleIddNS0_9null_typeES2_S2_S2_S2_S2_S2_S2_EE) | |
59 | x=1 y=2 (N5boost7polygon10point_dataIiEE) | |
60 | x=1 y=2 (7mypoint) | |
61 | ] | |
62 | */ | |
63 | //] |