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is_edge.hh
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25 
26 #ifndef MLN_WORLD_INTER_PIXEL_DIM2_IS_EDGE_HH
27 # define MLN_WORLD_INTER_PIXEL_DIM2_IS_EDGE_HH
28 
32 
33 # include <mln/core/alias/point2d.hh>
34 
35 namespace mln
36 {
37 
38  namespace world
39  {
40 
41  namespace inter_pixel
42  {
43 
44  namespace dim2
45  {
46 
47  struct is_edge : public Function_v2b< is_edge >
48  {
49  typedef bool result;
50  bool operator()(const point2d& p) const;
51  };
52 
53 
54 # ifndef MLN_INCLUDE_ONLY
55 
56  inline
57  bool
58  is_edge::operator()(const point2d& p) const
59  {
60  return p.row() % 2 + p.col() % 2 == 1;
61  }
62 
63 # endif // ! MLN_INCLUDE_ONLY
64 
65 
66  } // end of namespace mln::world::inter_pixel::dim2
67 
68  } // end of namespace mln::world::inter_pixel
69 
70  } // end of namespace mln::world
71 
72 } // end of namespace mln
73 
74 #endif // ! MLN_WORLD_INTER_PIXEL_DIM2_IS_EDGE_HH