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find.hh
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25 
26 #ifndef MLN_BORDER_FIND_HH
27 # define MLN_BORDER_FIND_HH
28 
34 # include <mln/core/internal/image_morpher.hh>
35 
36 
37 namespace mln
38 {
39 
40  namespace border
41  {
42 
51  template <typename I>
52  unsigned find(const Image<I>& ima);
53 
54 
55 # ifndef MLN_INCLUDE_ONLY
56 
57  namespace impl
58  {
59 
60  template <typename I, typename T, typename S, typename E>
61  inline
62  unsigned find__(const mln::internal::image_morpher<I, T, S, E>& ima)
63  {
64  return border::find(*ima.delegatee_());
65  }
66 
67  template <typename T, typename S, typename E>
68  inline
69  unsigned find__(const mln::internal::image_base<T, S, E>&)
70  {
71  return 0;
72  }
73 
74  template <typename I>
75  inline
76  unsigned find_(trait::image::speed::any, const I& ima)
77  {
78  return border::impl::find__(ima);
79  }
80 
81  template <typename I>
82  inline
83  unsigned find_(trait::image::speed::fastest, const I& ima)
84  {
85  return ima.border();
86  }
87 
88  } // end of namespace mln::border::impl
89 
90 
91  // Facade.
92 
93  template <typename I>
94  inline
95  unsigned find(const Image<I>& ima)
96  {
97  trace::entering("border::find");
98 
99  mln_precondition(exact(ima).is_valid());
100  unsigned res = border::impl::find_(mln_trait_image_speed(I)(), exact(ima));
101 
102  trace::exiting("border::find");
103  return res;
104  }
105 
106 # endif // ! MLN_INCLUDE_ONLY
107 
108  } // end of namespace mln::border
109 
110 } // end of namespace mln
111 
112 
113 #endif // ! MLN_BORDER_FIND_HH