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subtractive.hh
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25 
26 #ifndef MLN_MORPHO_TREE_FILTER_SUBTRACTIVE_HH
27 # define MLN_MORPHO_TREE_FILTER_SUBTRACTIVE_HH
28 
29 # include <mln/core/concept/function.hh>
30 # include <mln/fun/ops.hh>
31 
32 # include <mln/morpho/tree/data.hh>
33 # include <mln/morpho/tree/propagate_if.hh>
34 
43 namespace mln
44 {
45 
46  namespace morpho
47  {
48 
49  namespace tree
50  {
51 
52  namespace filter
53  {
54 
64  template <typename T, typename F, typename P>
65  inline
66  void
67  subtractive(const T& tree, Image<F>& f_, const Function_v2b<P>& pred_);
68 
69 
70 
71 
72 # ifndef MLN_INCLUDE_ONLY
73 
74  template <typename T, typename F, typename P>
75  inline
76  void
77  subtractive(const T& tree, Image<F>& f_, const Function_v2b<P>& pred_)
78  {
79  F& f = exact(f_);
80  const P& pred = exact(pred_);
81 
82  mln_trace("mln::morpho::tree::filter::subtractive");
83 
84  morpho::tree::propagate_if(tree, f, morpho::tree::desc_propagation (), !pred);
85 
86  mln_up_node_piter(T) n(tree);
87  for_all(n)
88  if (!pred(n))
89  f(n) = f(tree.parent(n));
90 
91  }
92 
93 # endif // ! MLN_INCLUDE_ONLY
94 
95  } // end of namespace mln::morpho::tree::filter
96  } // end of namespace mln::morpho::tree
97  } // end of namespace mln::morpho
98 } // end of namespace mln
99 
100 #endif // ! MLN_MORPHO_TREE_FILTER_SUBTRACTIVE_HH