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is_separator.hh
1 // Copyright (C) 2009 EPITA Research and Development Laboratory (LRDE)
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25 
26 #ifndef MLN_WORLD_INTER_PIXEL_IS_SEPARATOR_HH
27 # define MLN_WORLD_INTER_PIXEL_IS_SEPARATOR_HH
28 
34 
35 # include <mln/core/concept/function.hh>
36 # include <mln/core/image/dmorph/image_if.hh>
37 # include <mln/core/point.hh>
38 
39 
40 namespace mln
41 {
42 
43  namespace world
44  {
45 
46  namespace inter_pixel
47  {
48 
49 
52  struct is_separator : public Function_v2b< is_separator >
53  {
54 
55  typedef bool result;
56 
57  template <typename P>
58  bool operator()(const Gpoint<P>& p) const;
59 
60  template <typename P>
61  bool operator()(const Site_Proxy<P>& p) const;
62 
63  };
64 
65 
66 # ifndef MLN_INCLUDE_ONLY
67 
68  template <typename P>
69  inline
70  bool
71  is_separator::operator()(const Gpoint<P>& p_) const
72  {
73  const P& p = exact(p_);
74  return p.row() % 2 + p.col() % 2 == 1;
75  }
76 
77  template <typename P>
78  inline
79  bool
81  {
82  mlc_is_a(mln_site(P), Gpoint)::check();
83  return this->operator()(exact(p).to_site());
84  }
85 
86 # endif // ! MLN_INCLUDE_ONLY
87 
88  } // end of namespace mln::world::inter_pixel
89 
90  } // end of namespace mln::world
91 
92 } // end of namespace mln
93 
94 #endif // ! MLN_WORLD_INTER_PIXEL_IS_SEPARATOR_HH