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is_n_face.hh
1 // Copyright (C) 2009 EPITA Research and Development Laboratory (LRDE)
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25 
26 #ifndef MLN_TOPO_IS_N_FACE_HH
27 # define MLN_TOPO_IS_N_FACE_HH
28 
32 
33 # include <mln/core/site_set/complex_psite.hh>
34 # include <mln/core/image/complex_neighborhoods.hh>
35 # include <mln/core/image/complex_neighborhood_piter.hh>
36 
37 namespace mln
38 {
39 
40  namespace topo
41  {
42 
43  // Forward declaration.
44  template <unsigned N> struct is_n_face;
45 
47  template <unsigned N>
48  struct is_n_face : public mln::Function_v2b< is_n_face<N> >
49  {
50  typedef bool result;
51 
52  template <typename P>
53  bool operator()(const P& p) const;
54  };
55 
56 
57 # ifndef MLN_INCLUDE_ONLY
58 
59  template <unsigned N>
60  template <typename P>
61  inline
62  bool
63  is_n_face<N>::operator()(const P& p) const
64  {
65  return p.n() == N;
66  }
67 
68 # endif // MLN_INCLUDE_ONLY
69 
70  } // end of namespace mln::topo
71 
72 } // end of namespace mln
73 
74 #endif // ! MLN_TOPO_IS_N_FACE_HH