subtractive.hh

// Copyright (C) 2009 EPITA Research and Development Laboratory (LRDE)
//
// This file is part of Olena.
//
// Olena is free software: you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation, version 2 of the License.
//
// Olena is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Olena.  If not, see <http://www.gnu.org/licenses/>.
//
// As a special exception, you may use this file as part of a free
// software project without restriction.  Specifically, if other files
// instantiate templates or use macros or inline functions from this
// file, or you compile this file and link it with other files to produce
// an executable, this file does not by itself cause the resulting
// executable to be covered by the GNU General Public License.  This
// exception does not however invalidate any other reasons why the
// executable file might be covered by the GNU General Public License.

#ifndef MLN_MORPHO_TREE_FILTER_SUBTRACTIVE_HH
# define MLN_MORPHO_TREE_FILTER_SUBTRACTIVE_HH

# include <mln/core/concept/function.hh>
# include <mln/fun/ops.hh>

# include <mln/morpho/tree/data.hh>
# include <mln/morpho/tree/propagate_if.hh>

namespace mln
{

  namespace morpho
  {

    namespace tree
    {

      namespace filter
      {

        template <typename T, typename F, typename P>
        inline
        void
        subtractive(const T& tree, Image<F>& f_, const Function_v2b<P>& pred_);




# ifndef MLN_INCLUDE_ONLY

        template <typename T, typename F, typename P>
        inline
        void
        subtractive(const T& tree, Image<F>& f_, const Function_v2b<P>& pred_)
        {
          F& f = exact(f_);
          const P& pred = exact(pred_);

          trace::entering("mln::morpho::tree::filter::subtractive");

          morpho::tree::propagate_if(tree, f, morpho::tree::desc_propagation (), !pred);

          mln_up_node_piter(T) n(tree);
          for_all(n)
            if (!pred(n))
              f(n) = f(tree.parent(n));

          trace::exiting("mln::morpho::tree::filter::subtractive");
        }

# endif // ! MLN_INCLUDE_ONLY

      } // end of namespace mln::morpho::tree::filter
    } // end of namespace mln::morpho::tree
  } // end of namespace mln::morpho
} // end of namespace mln

#endif // ! MLN_MORPHO_TREE_FILTER_SUBTRACTIVE_HH