w_window.hh

// Copyright (C) 2007, 2008, 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_MAKE_W_WINDOW_HH
# define MLN_MAKE_W_WINDOW_HH

# include <mln/core/concept/window.hh>
# include <mln/core/concept/function.hh>
# include <mln/core/w_window.hh>


namespace mln
{

  namespace make
  {

    template <typename W, typename F>
    mln::w_window<mln_dpsite(W), mln_result(F)>
    w_window(const Window<W>& win, const Function_v2v<F>& wei);


# ifndef MLN_INCLUDE_ONLY

    template <typename W, typename F>
    inline
    mln::w_window<mln_dpsite(W), mln_result(F)>
    w_window(const Window<W>& win_, const Function_v2v<F>& wei_)
    {
      trace::entering("make::w_window");

      mln_is_simple_window(W)::check();

      const W& win = exact(win_);
      const F& wei = exact(wei_);
      mln_precondition(! win.is_empty());

      typedef mln_dpsite(W) D;
      mln::w_window<D, mln_result(F)> w_win;

      typedef mln_psite(D) P;
      P O = literal::origin;
      mln_qiter(W) q(win, O);
      for_all(q)
        w_win.insert(wei(q), q - O);

      trace::exiting("make::w_window");
      return w_win;
    }

# endif // ! MLN_INCLUDE_ONLY

  } // end of namespace mln::make

} // end of namespace mln


#endif // ! MLN_MAKE_W_WINDOW_HH