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morpho/tree/filter/max.hh
1 // Copyright (C) 2009 EPITA Research and Development Laboratory (LRDE)
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25 
26 #ifndef MLN_MORPHO_TREE_FILTER_MAX_HH
27 # define MLN_MORPHO_TREE_FILTER_MAX_HH
28 
29 # include <mln/core/concept/function.hh>
30 # include <mln/morpho/tree/data.hh>
31 
40 namespace mln
41 {
42 
43  namespace morpho
44  {
45 
46  namespace tree
47  {
48 
49  namespace filter
50  {
51 
61  template <typename T, typename F, typename P>
62  inline
63  void
64  max(const T& tree, Image<F>& f_, const Function_v2b<P>& pred_);
65 
66 
67 
68 
69 # ifndef MLN_INCLUDE_ONLY
70 
71  template <typename T, typename F, typename P>
72  inline
73  void
74  max(const T& tree, Image<F>& f_, const Function_v2b<P>& pred_)
75  {
76  F& f = exact(f_);
77  const P& pred = exact(pred_);
78 
79  mln_trace("mln::morpho::tree::filter::max");
80 
81  mln_ch_value(F, bool) mark;
82  initialize(mark, f);
83  mln::data::fill(mark, true);
84 
85  {
86  mln_up_node_piter(T) n(tree);
87  for_all(n)
88  if (!mark(n))
89  mark(tree.parent(n)) = false;
90  else if (pred(n))
91  {
92  mark(tree.parent(n)) = false;
93  mark(n) = false;
94  }
95  }
96 
97  {
98  mln_dn_node_piter(T) n(tree);
99  for_all(n)
100  if (mark(n))
101  f(n) = f(tree.parent(n));
102  }
103 
104  }
105 
106 # endif // ! MLN_INCLUDE_ONLY
107 
108  } // end of namespace mln::morpho::tree::filter
109 
110  } // end of namespace mln::morpho::tree
111 
112  } // end of namespace mln::morpho
113 
114 } // end of namespace mln
115 
116 #endif // ! MLN_MORPHO_TREE_FILTER_MAX_HH