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hyper_directional.hh
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26 
27 #ifndef MLN_CANVAS_BROWSING_HYPER_DIRECTIONAL_HH
28 # define MLN_CANVAS_BROWSING_HYPER_DIRECTIONAL_HH
29 
33 
34 # include <mln/core/concept/browsing.hh>
35 # include <mln/core/concept/image.hh>
36 
37 namespace mln
38 {
39 
40  namespace canvas
41  {
42 
43  namespace browsing
44  {
45 
76  struct hyper_directional_t : public Browsing< hyper_directional_t >
77  {
78  // This default constructor is needed for compilation with gcc
79  // 4.6.0, gcc 4.6.1 and Clang.
81 
82  template <typename F>
83  void operator()(F& f) const;
84  };
85 
87 
88 # ifndef MLN_INCLUDE_ONLY
89 
90 # ifndef MLN_WO_GLOBAL_VARS
91 
93 
94 # endif // ! MLN_WO_GLOBAL_VARS
95 
96 
97  inline
99  {
100  }
101 
102  template <typename F>
103  inline
104  void
106  {
107  mln_trace("canvas::browsing::hyper_directional");
108  mln_precondition(f.dir < f.dim);
109  typedef typename F::I I;
110 
111  mln_psite(I)
112  pmin = f.input.domain().pmin(),
113  pmax = f.input.domain().pmax();
114 
115  f.p = pmin;
116 
117  f.init();
118 
119  do
120  {
121  f.next();
122 
123  for (int c = F::dim - 1; c >= 0; --c)
124  {
125  if (c == int(f.dir))
126  continue;
127  if (f.p[c] != pmax[c])
128  {
129  ++f.p[c];
130  break;
131  }
132  f.p[c] = pmin[c];
133  }
134  } while (f.p != pmin);
135 
136  f.final();
137  }
138 
139 # endif // ! MLN_INCLUDE_ONLY
140 
141  } // end of namespace mln::canvas::browsing
142 
143  } // end of namespace mln::canvas
144 
145 } // end of namespace mln
146 
147 #endif // ! MLN_CANVAS_BROWSING_HYPER_DIRECTIONAL_HH