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>
applyboost::geometry::detail::no_rescale_policy36     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
67