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is_pixel.hh
1 // Copyright (C) 2009 EPITA Research and Development Laboratory (LRDE)
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25 
26 #ifndef MLN_WORLD_INTER_PIXEL_IS_PIXEL_HH
27 # define MLN_WORLD_INTER_PIXEL_IS_PIXEL_HH
28 
32 
33 # include <mln/core/concept/function.hh>
34 # include <mln/core/image/dmorph/image_if.hh>
35 # include <mln/core/point.hh>
36 
37 
38 namespace mln
39 {
40 
41  namespace world
42  {
43 
44  namespace inter_pixel
45  {
46 
47  struct is_pixel : public Function_v2b< is_pixel >
48  {
49  typedef bool result;
50 
51  template <typename P>
52  bool operator()(const Gpoint<P>& p) const;
53 
54  template <typename P>
55  bool operator()(const Site_Proxy<P>& p) const;
56  };
57 
58 
59 # ifndef MLN_INCLUDE_ONLY
60 
61  template <typename P>
62  inline
63  bool
64  is_pixel::operator()(const Gpoint<P>& p_) const
65  {
66  const P& p = exact(p_);
67  const unsigned n = P::dim;
68  for (unsigned i = 0; i < n; ++i)
69  if (p[i] % 2 == 1)
70  return false;
71  return true;
72  }
73 
74  template <typename P>
75  inline
76  bool
77  is_pixel::operator()(const Site_Proxy<P>& p) const
78  {
79  mlc_is_a(mln_site(P), Gpoint)::check();
80  return this->operator()(exact(p).to_site());
81  }
82 
83 # endif // ! MLN_INCLUDE_ONLY
84 
85  } // end of namespace mln::world::inter_pixel
86 
87  } // end of namespace mln::world
88 
89 } // end of namespace mln
90 
91 #endif // ! MLN_WORLD_INTER_PIXEL_IS_PIXEL_HH