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00026 #ifndef MLN_FUN_X2V_NNEIGHBOR_HH
00027 # define MLN_FUN_X2V_NNEIGHBOR_HH
00028
00029 # include <mln/core/concept/function.hh>
00030 # include <mln/fun/internal/selector.hh>
00031 # include <mln/algebra/vec.hh>
00032 # include <mln/convert/to.hh>
00033
00039 namespace mln
00040 {
00041
00042 namespace fun
00043 {
00044
00045 namespace x2x
00046 {
00047
00048 template < typename I >
00049 struct nneighbor
00050 : public fun::internal::selector_<const algebra::vec<3,float>,
00051
00052 mln_value(I), nneighbor<I> >::ret
00053 {
00054 typedef mln_value(I) result;
00055
00056 nneighbor(const I& ima);
00057
00058 template < unsigned n, typename T >
00059 mln_value(I)
00060 operator()(const algebra::vec<n,T>& x) const;
00061
00062 const I& ima;
00063 };
00064
00065
00066 # ifndef MLN_INCLUDE_ONLY
00067
00068 template < typename I >
00069 nneighbor<I>::nneighbor(const I& ima) : ima(ima)
00070 {
00071 }
00072
00073 template < typename I >
00074 template < unsigned n, typename T >
00075 mln_value(I)
00076 nneighbor<I>::operator()(const algebra::vec<n,T>& x) const
00077 {
00078 mln_psite(I) p = convert::to<mln_psite(I)>(x);
00079 return ima(p);
00080 }
00081
00082
00083 # endif // ! MLN_INCLUDE_ONLY
00084
00085 }
00086
00087 }
00088
00089 }
00090
00091
00092 #endif // ! MLN_FUN_X2V_NNEIGHBOR_HH