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dual_neighb.hh
1 // Copyright (C) 2008, 2009 EPITA Research and Development Laboratory (LRDE)
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25 
26 #ifndef MLN_MAKE_DUAL_NEIGHB_HH
27 # define MLN_MAKE_DUAL_NEIGHB_HH
28 
32 
33 # include <mln/core/concept/image.hh>
34 # include <mln/core/concept/neighborhood.hh>
35 # include <mln/pw/value.hh>
36 # include <mln/win/multiple_size.hh>
37 # include <mln/core/neighb.hh>
38 
39 
40 namespace mln
41 {
42 
43  namespace make
44  {
45 
46  template <typename I, typename N>
47  neighb< win::multiple_size< 2, mln_window(N), pw::value_<I> > >
48  dual_neighb(const Image<I>& ima,
49  const Neighborhood<N>& nbh_true,
50  const Neighborhood<N>& nbh_false);
51 
52 
53 
54 # ifndef MLN_INCLUDE_ONLY
55 
56 
57  template <typename I, typename N>
58  inline
59  neighb< win::multiple_size< 2, mln_window(N), pw::value_<I> > >
60  dual_neighb(const Image<I>& ima_,
61  const Neighborhood<N>& nbh_true_,
62  const Neighborhood<N>& nbh_false_)
63  {
64  mln_trace("make::dual_neighb");
65 
66  mlc_is(mln_trait_image_kind(I), trait::image::kind::logic)::check();
67 
68  const I& ima = exact(ima_);
69  const N& nbh_true = exact(nbh_true_);
70  const N& nbh_false = exact(nbh_false_);
71  mln_precondition(ima.is_valid());
72 
73  typedef win::multiple_size< 2, mln_window(N), pw::value_<I> > W;
74  W win(pw::value(ima));
75  win.set_window(false, nbh_false.win()); // 0
76  win.set_window(true, nbh_true .win()); // 1
77 
78  neighb<W> nbh(win);
79 
80  return nbh;
81  }
82 
83 # endif // ! MLN_INCLUDE_ONLY
84 
85  } // end of namespace mln::make
86 
87 } // end of namespace mln
88 
89 
90 #endif // ! MLN_MAKE_DUAL_NEIGHB_HH