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is_not_end_point.hh
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26 
27 #ifndef MLN_TOPO_IS_NOT_END_POINT_HH
28 # define MLN_TOPO_IS_NOT_END_POINT_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 namespace mln
38 {
39 
40  namespace topo
41  {
44  template <typename I, typename N>
45  struct is_not_end_point : public Function_v2b< is_not_end_point<I, N> >
46  {
51 
56  is_not_end_point(const Neighborhood<N>& nbh, const Image<I>& ima);
57 
59  void set_image(const Image<I>& ima);
60 
62  bool operator()(const mln_psite(I)& p) const;
63 
64  private:
66  const N& nbh_;
68  const I* ima_;
69  };
70 
71 
72 
73 # ifndef MLN_INCLUDE_ONLY
74 
75  template <typename I, typename N>
76  inline
78  : nbh_(exact(nbh)),
79  ima_(0)
80  {
81  }
82 
83  template <typename I, typename N>
84  inline
86  const Image<I>& ima)
87  : nbh_(exact(nbh)),
88  ima_(exact(&ima))
89  {
90  }
91 
92  template <typename I, typename N>
93  inline
94  void
95  is_not_end_point<I, N>::set_image(const Image<I>& ima)
96  {
97  ima_ = exact(&ima);
98  }
99 
100  template <typename I, typename N>
101  inline
102  bool
103  is_not_end_point<I, N>::operator()(const mln_psite(I)& p) const
104  {
105  mln_precondition(ima_);
106  const I& ima = *ima_;
107  // Number of foreground neighbors pixels.
108  unsigned nneighbs = 0;
109  mln_niter(N) n(nbh_, p);
110  for_all(n)
111  if (ima.has(n) && ima(n))
112  ++nneighbs;
113  return nneighbs != 1;
114  }
115 
116 # endif // MLN_INCLUDE_ONLY
117 
118  } // end of namespace topo
119 
120 } // end of namespace mln
121 
122 #endif // ! MLN_TOPO_IS_NOT_END_POINT_HH