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elementary.hh
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25 
26 #ifndef MLN_MORPHO_INTERNAL_ELEMENTARY_HH
27 # define MLN_MORPHO_INTERNAL_ELEMENTARY_HH
28 
33 
34 # include <mln/core/concept/image.hh>
35 # include <mln/core/concept/neighborhood.hh>
36 # include <mln/core/concept/accumulator.hh>
37 # include <mln/core/concept/meta_accumulator.hh>
38 
39 
40 namespace mln
41 {
42 
43  namespace morpho
44  {
45 
46  namespace internal
47  {
48 
50  template <typename A, typename I, typename N, typename O>
51  mln_concrete(I)
52  elementary(const I& input, const N& nbh, O oper);
53 
54 
55 # ifndef MLN_INCLUDE_ONLY
56 
57  namespace impl
58  {
59 
60  // Different cases.
61 
62  template <typename I, typename N, typename A, typename O>
63  mln_concrete(I)
64  elementary_(mln::trait::image::speed::any,
65  const I& input, const N& nbh, A accu, O oper)
66  {
67  mln_concrete(I) output;
68  initialize(output, input);
69 
70  mln_piter(I) p(input.domain());
71  mln_niter(N) n(nbh, p);
72  for_all(p)
73  {
74  accu.take_as_init(input(p));
75  for_all(n) if (input.has(n))
76  accu.take(input(n));
77  output(p) = oper(accu, input(p));
78  }
79 
80  return output;
81  }
82 
83  // Selector.
84 
85  template <typename A, typename I, typename N, typename O>
86  mln_concrete(I)
87  elementary_selector_(const I& input, const N& nbh, O oper)
88  {
89  mln_accu_with(A, mln_value(I)) accu;
90  return elementary_(mln_trait_image_speed(I)(),
91  input, nbh,
92  accu, oper);
93  }
94 
95  } // end of namespace mln::morpho::internal::impl
96 
97 
98  // Facade.
99 
100  template <typename A, typename I, typename N, typename O>
101  mln_concrete(I)
102  elementary(const I& input, const N& nbh, O oper)
103  {
104  return impl::elementary_selector_<A>(exact(input), exact(nbh), oper);
105  }
106 
107 # endif // ! MLN_INCLUDE_ONLY
108 
109  } // end of namespace mln::morpho::internal
110 
111  } // end of namespace mln::morpho
112 
113 } // end of namespace mln
114 
115 
116 #endif // ! MLN_MORPHO_INTERNAL_ELEMENTARY_HH