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detach_cell.hh
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26 
27 #ifndef MLN_TOPO_DETACH_CELL_HH
28 # define MLN_TOPO_DETACH_CELL_HH
29 
32 
33 # include <mln/core/concept/function.hh>
34 # include <mln/core/concept/image.hh>
35 # include <mln/core/concept/neighborhood.hh>
36 
37 # include <mln/core/site_set/p_set.hh>
38 
39 # include <mln/make/detachment.hh>
40 
41 
42 namespace mln
43 {
44 
45  namespace topo
46  {
47 
55  template <typename I, typename N>
57  {
58  public:
61 
66  detach_cell(const Neighborhood<N>& nbh);
67 
78  detach_cell(mln::Image<I>& ima, const Neighborhood<N>& nbh);
80 
81  /* FIXME: Rename as init() or something like this? See how other
82  functors are written. */
86  void set_image(mln::Image<I>& ima);
87 
91  void operator()(const mln_psite(I)& f);
92 
93  private:
94  I* ima_;
95  const N& nbh_;
96  };
97 
98 
99 
100 # ifndef MLN_INCLUDE_ONLY
101 
102  template <typename I, typename N>
103  inline
105  : ima_(0), nbh_(exact(nbh))
106  {
107  mlc_equal(mln_value(I), bool)::check();
108  }
109 
110  template <typename I, typename N>
111  inline
113  const Neighborhood<N>& nbh)
114  : ima_(exact(&ima)), nbh_(exact(nbh))
115  {
116  mlc_equal(mln_value(I), bool)::check();
117  }
118 
119  template <typename I, typename N>
120  inline
121  void
123  {
124  ima_ = exact(&ima);
125  }
126 
127  template <typename I, typename N>
128  inline
129  void
130  detach_cell<I, N>::operator()(const mln_psite(I)& f)
131  {
132  mln_precondition(ima_);
133 
134  typedef p_set<mln_psite(I)> faces_t;
135 
136  // Compute the detachment of P from *IMA_.
137  faces_t detach = make::detachment(*ima_, f, nbh_);
138  // Detach all its faces from *IMA_.
139 # if 0
140  // FIXME: Does not work yet? Check again.
141  data::fill(*ima_ | detach, false);
142 # endif
143  mln_piter(faces_t) p(detach);
144  for_all(p)
145  (*ima_)(p) = false;
146  }
147 
148 # endif // MLN_INCLUDE_ONLY
149 
150  } // end of namespace mln::topo
151 
152 } // end of namespace mln
153 
154 #endif // ! MLN_TOPO_DETACH_CELL_HH