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greater_point.hh
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25 
26 #ifndef MLN_UTIL_GREATER_POINT_HH
27 # define MLN_UTIL_GREATER_POINT_HH
28 
29 # include <mln/core/concept/image.hh>
30 
31 
32 namespace mln {
33 
34  namespace util {
35 
41  template <typename I>
43  {
44  public:
45  typedef mln_psite(I) point;
46 
47  greater_point(const Image<I>& ima);
48 
50  bool operator()(const point& x, const point& y);
51 
52  private:
53  const I& ima_;
54  };
55 
56 
58  /* FIXME: To be moved into mln/make/? */
59  template <typename I>
60  greater_point<I>
61  make_greater_point(const Image<I>& ima);
62 
63 
64 # ifndef MLN_INCLUDE_ONLY
65 
66  template <typename I>
68  : ima_ (exact(ima))
69  {
70  }
71 
72  template <typename I>
73  bool
74  greater_point<I>::operator()(const point& x, const point& y)
75  {
76  return ima_(x) > ima_(y);
77  }
78 
79 
80  template <typename I>
81  greater_point<I>
82  make_greater_point(const Image<I>& ima)
83  {
84  return greater_point<I>(ima);
85  }
86 
87 # endif // ! MLN_INCLUDE_ONLY
88 
89  } // end of namespace mln::util
90 
91 } // end of namespace mln
92 
93 #endif // ! MLN_UTIL_GREATER_POINT_HH