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00026 #ifndef MLN_GEOM_DELTA_HH
00027 # define MLN_GEOM_DELTA_HH
00028
00032
00033
00034 # include <mln/core/concept/window.hh>
00035 # include <mln/core/concept/weighted_window.hh>
00036 # include <mln/core/concept/neighborhood.hh>
00037
00038
00039 namespace mln
00040 {
00041
00042 namespace geom
00043 {
00044
00046 template <typename W>
00047 unsigned delta(const Window<W>& win);
00048
00050 template <typename W>
00051 unsigned delta(const Weighted_Window<W>& wwin);
00052
00054 template <typename N>
00055 unsigned delta(const Neighborhood<N>& nbh);
00056
00057
00058
00059 # ifndef MLN_INCLUDE_ONLY
00060
00061 namespace internal
00062 {
00063
00064 template <typename W>
00065 unsigned delta_dispatch(trait::window::support::any,
00066 trait::window::definition::any,
00067 const W& win)
00068 {
00069 (void) win;
00070 return 0;
00071 }
00072
00073 template <typename W>
00074 unsigned delta_dispatch(trait::window::support::regular,
00075 trait::window::definition::varying,
00076 const W& win)
00077 {
00078 (void) win;
00079 return 0;
00080 }
00081
00082 template <typename W>
00083 unsigned delta_dispatch(trait::window::support::regular,
00084 trait::window::definition::any,
00085 const W& win)
00086 {
00087 return win.delta();
00088 }
00089
00090 }
00091
00092
00093
00094
00095 template <typename W>
00096 unsigned delta(const Window<W>& win)
00097 {
00098 mln_precondition(exact(win).is_valid());
00099 return internal::delta_dispatch(mln_trait_window_support(W)(),
00100 mln_trait_window_definition(W)(),
00101 exact(win));
00102 }
00103
00104 template <typename W>
00105 unsigned delta(const Weighted_Window<W>& wwin)
00106 {
00107 mln_precondition(exact(wwin).is_valid());
00108 return delta(exact(wwin).win());
00109 }
00110
00111 template <typename N>
00112 unsigned delta(const Neighborhood<N>& nbh)
00113 {
00114 mln_precondition(exact(nbh).is_valid());
00115 return delta(exact(nbh).win());
00116 }
00117
00118 # endif // ! MLN_INCLUDE_ONLY
00119
00120 }
00121
00122 }
00123
00124
00125 #endif // ! MLN_GEOM_DELTA_HH