snakes_base.hh

// Copyright (C) 2004  EPITA Research and Development Laboratory
//
// This file is part of the Olena Library.  This library is free
// software; you can redistribute it and/or modify it under the terms
// of the GNU General Public License version 2 as published by the
// Free Software Foundation.
//
// This library 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 this library; see the file COPYING.  If not, write to
// the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
// MA 02111-1307, USA.
//
// As a special exception, you may use this file as part of a free
// software library 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 OLENA_SNAKES_SNAKES_BASE_HH
# define OLENA_SNAKES_SNAKES_BASE_HH

#include <oln/snakes/segment.hh>

namespace oln {

  namespace snakes {
    template <class algorithm>
    class snake
    {
    public:
      typedef typename algorithm::image_type    image_type;
      typedef typename image_type::point_type   point_type;

    public:
      snake(const image_type&           image,
            std::list<point_type>       initial_contour,
            ntg::float_s                alpha,
            ntg::float_s                beta,
            ntg::float_s                gamma,
            ntg::float_s                khi);

    public:
      std::list<point_type>
      contour(void) const;

      ntg::float_s
      energy(void) const;

    public:
      int
      update_snake(void);

      void
      converge(void);

    private:
      segment<image_type> s;

      algorithm a;
      //< information, that is to say nearly every information.

    private:
      image_type gradient;

    private:
      ntg::float_s alpha; 
      ntg::float_s beta;  
      ntg::float_s gamma; 
      ntg::float_s khi;   

    private:
      friend
      int
      algorithm::update_snake(const typename algorithm::image_type&, snake&);

      friend
      void
      algorithm::converge(const typename algorithm::image_type&, snake&);

      friend
      std::ostream&
      ::operator<< <>(std::ostream&, const snake&);
    };

  } // end snakes

} // end oln

template <class algorithm>
std::ostream& operator<<(std::ostream& os,
                         const oln::snakes::snake<algorithm>& s)
{
  os << "Snake:" << std::endl;
  os << s.s;
  return os;
}

#include <oln/snakes/snakes_base.hxx>

#endif // !OLENA_SNAKES_SNAKES_BASE_HH

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