27 #ifndef MLN_CANVAS_BROWSING_DIAGONAL2D_HH
28 # define MLN_CANVAS_BROWSING_DIAGONAL2D_HH
34 # include <mln/core/concept/browsing.hh>
35 # include <mln/core/concept/image.hh>
95 # ifndef MLN_INCLUDE_ONLY
97 # ifndef MLN_WO_GLOBAL_VARS
101 # endif // ! MLN_WO_GLOBAL_VARS
109 template <
typename F>
114 mln_trace(
"canvas::browsing::diagonal2d");
116 typedef typename F::I I;
118 typedef mln_psite(I)
psite;
121 dpsite dp_first(1, 0);
122 dpsite dp_second(0, 1);
123 dpsite dp_diag(-1, 1);
125 mln_deduce(I, psite,
delta) diag;
127 psite pmin = f.input.domain().pmin();
133 while (f.input.domain().has(f.
p))
135 psite start_diag = f.p;
138 while (f.input.domain().has(f.p))
145 f.p = start_diag + dp_first;
147 f.p = f.p - dp_first;
149 f.p = f.p + dp_second;
150 while (f.input.domain().has(f.p))
152 psite start_diag = f.p;
156 while (f.input.domain().has(f.p))
164 f.p = start_diag + dp_second;
170 # endif // ! MLN_INCLUDE_ONLY
178 #endif // ! MLN_CANVAS_BROWSING_DIAGONAL2D_HH