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1 | // Boost.Geometry (aka GGL, Generic Geometry Library) |
2 | ||
3 | // Copyright (c) 2013 Barend Gehrels, Amsterdam, the Netherlands. | |
4 | // Copyright (c) 2013 Bruno Lalande, Paris, France. | |
5 | // Copyright (c) 2013 Mateusz Loskot, London, UK. | |
6 | // Copyright (c) 2013 Adam Wulkiewicz, Lodz, Poland. | |
7 | ||
8 | // Use, modification and distribution is subject to the Boost Software License, | |
9 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
10 | // http://www.boost.org/LICENSE_1_0.txt) | |
11 | ||
12 | #ifndef BOOST_GEOMETRY_POLICIES_ROBUSTNESS_NO_RESCALE_POLICY_HPP | |
13 | #define BOOST_GEOMETRY_POLICIES_ROBUSTNESS_NO_RESCALE_POLICY_HPP | |
14 | ||
15 | #include <stddef.h> | |
16 | ||
17 | #include <boost/geometry/core/coordinate_type.hpp> | |
18 | #include <boost/geometry/policies/robustness/robust_point_type.hpp> | |
19 | #include <boost/geometry/policies/robustness/segment_ratio.hpp> | |
20 | #include <boost/geometry/policies/robustness/segment_ratio_type.hpp> | |
21 | ||
22 | namespace boost { namespace geometry | |
23 | { | |
24 | ||
25 | #ifndef DOXYGEN_NO_DETAIL | |
26 | namespace detail | |
27 | { | |
28 | ||
29 | // Probably this will be moved out of namespace detail | |
30 | struct no_rescale_policy | |
31 | { | |
32 | static bool const enabled = false; | |
33 | ||
34 | // We don't rescale but return the reference of the input | |
35 | template <std::size_t Dimension, typename Value> | |
36 | inline Value const& apply(Value const& value) const | |
37 | { | |
38 | return value; | |
39 | } | |
40 | }; | |
41 | ||
42 | } // namespace detail | |
43 | #endif | |
44 | ||
45 | ||
46 | // Implement meta-functions for this policy | |
47 | template <typename Point> | |
48 | struct robust_point_type<Point, detail::no_rescale_policy> | |
49 | { | |
50 | // The point itself | |
51 | typedef Point type; | |
52 | }; | |
53 | ||
54 | template <typename Point> | |
55 | struct segment_ratio_type<Point, detail::no_rescale_policy> | |
56 | { | |
57 | // Define a segment_ratio defined on coordinate type, e.g. | |
58 | // int/int or float/float | |
59 | typedef typename geometry::coordinate_type<Point>::type coordinate_type; | |
60 | typedef segment_ratio<coordinate_type> type; | |
61 | }; | |
62 | ||
63 | ||
64 | }} // namespace boost::geometry | |
65 | ||
66 | #endif // BOOST_GEOMETRY_POLICIES_ROBUSTNESS_NO_RESCALE_POLICY_HPP |