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image2d-skel.hh
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25 
26 #ifndef APPS_MORPHERS_IMAGE2D_SKEL_HH
27 # define APPS_MORPHERS_IMAGE2D_SKEL_HH
28 
32 
33 /* FIXME: Remove this file as soon as patches from the mesh-segm-skel
34  branch have been merged into the current branch. */
35 
36 # include <mln/topo/is_simple_2d.hh>
37 
38 
46 template <typename I, typename N>
47 class is_simple_2d : public mln::Function_v2b< is_simple_2d<I, N> >,
48  private mln::topo::is_simple_2d_t<N>
49 {
50 public:
52 
54  typedef bool result;
55 
60  : super(mln::exact(nbh_fg)),
61  ima_(0)
62  {
63  }
64 
70  const mln::Image<I>& ima)
71  : super(mln::exact(nbh_fg)),
72  ima_(mln::exact(&ima))
73  {
74  }
75 
77  void set_image(const mln::Image<I>& ima)
78  {
79  ima_ = mln::exact(&ima);
80  }
81 
83  bool operator()(const mln_psite(I)& p) const
84  {
85  return this->check(*ima_, p);
86  }
87 
88 private:
90  const I* ima_;
91 };
92 
93 
94 template <typename I>
95 void
96 detach(const mln_psite(I)& p, mln::Image<I>& ima)
97 {
98  mln::exact(ima)(p) = false;
99 }
100 
101 
102 template <typename I, typename N>
103 struct is_not_end_point : public mln::Function_v2b< is_not_end_point<I, N> >
104 {
110  const mln::Image<I>& ima)
111  : nbh_(mln::exact(nbh)),
112  ima_(mln::exact(ima))
113  {
114  }
115 
116  // Is \a p not a end point?
117  bool operator()(const mln_psite(I)& p) const
118  {
119  // Number of foreground neighbors pixels.
120  unsigned nneighbs = 0;
121  mln_niter(N) n(nbh_, p);
122  for_all(n)
123  if (ima_.has(n) && ima_(n))
124  ++nneighbs;
125  return nneighbs != 1;
126  }
127 
128 private:
130  const N& nbh_;
132  const I& ima_;
133 };
134 
135 #endif // ! APPS_MORPHERS_IMAGE2D_SKEL_HH