window3d.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_CORE_ALIAS_WINDOW3D_HH
# define MLN_CORE_ALIAS_WINDOW3D_HH


# include <cmath>
# include <mln/core/window.hh>
# include <mln/core/alias/dpoint3d.hh>
# include <mln/convert/from_to.hh>


namespace mln
{

  //
  typedef window<mln::dpoint3d> window3d;


  const window3d& win_c4p_3d();


  const window3d& win_c8p_3d();



  namespace convert
  {

    namespace over_load
    {

      template <unsigned M>
      void from_to_(bool const (&values)[M], window3d& win);

    } // end of namespace mln::convert::over_load

  } // end of namespace mln::convert



# ifndef MLN_INCLUDE_ONLY

  inline const window3d&
  win_c4p_3d()
  {
    static window3d it;
    if (it.size() == 0)
      {
        it
          .insert(0,  0, -1)
          .insert(0, -1,  0)
          .insert(0,  0,  0)
          .insert(0, +1,  0)
          .insert(0,  0, +1);
      }
    return it;
  }

  inline const window3d&
  win_c8p_3d()
  {
    static window3d it;
    if (it.size() == 0)
      {
        it
          .insert(0, -1, -1)
          .insert(0,  0, -1)
          .insert(0, +1, -1)
          .insert(0, -1,  0)
          .insert(0,  0,  0)
          .insert(0, +1,  0)
          .insert(0, -1, +1)
          .insert(0,  0, +1)
          .insert(0, +1, +1);
      }
    return it;
  }

  namespace convert
  {

    namespace over_load
    {

      template <unsigned M>
      void
      from_to_(bool const (&values)[M], window3d& win)
      {
        const int h = unsigned(std::pow(float(M), float(1. / 3.))) / 2;
        mln_precondition((2 * h + 1) * (2 * h + 1) * (2 * h + 1) == M);
        win.clear();
        unsigned i = 0;
        for (int sli = - h; sli <= h; ++sli)
          for (int row = - h; row <= h; ++row)
            for (int col = - h; col <= h; ++col)
              if (values[i++])
                win.insert(sli, row, col);
      }

    } // end of namespace mln::convert::over_load

  } // end of namespace mln::convert

# endif // ! MLN_INCLUDE_ONLY


} // end of namespace mln


#endif // ! MLN_CORE_ALIAS_WINDOW3D_HH