image_size.hh

// Copyright (C) 2001, 2002, 2003, 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_CORE_ABSTRACT_IMAGE_SIZE_HH
# define OLENA_CORE_ABSTRACT_IMAGE_SIZE_HH

# include <mlc/type.hh>
# include <mlc/contract.hh>
# include <oln/core/coord.hh>
# include <ntg/utils/debug.hh>
# include <sstream>



namespace oln {

  namespace abstract {



    template<class Exact>
    struct image_size; // fwd_decl

  } // end of abstract

  template<class Exact>
  struct image_size_traits;

  template<class Exact>
  struct image_size_traits<abstract::image_size<Exact> >
  {
  };


  namespace abstract {


    template<class Exact>
    struct image_size : public mlc_hierarchy::any< Exact >
    {

    public:

      enum { dim = image_size_traits<Exact>::dim };

      coord
      nth(unsigned n) const
      {
        assertion(n < dim);
        return coord_[n];
      }

      coord&
      nth(unsigned n)
      {
        assertion(n < dim);
        return coord_[n];
      }

      coord
      border() const
      {
        return border_;
      }


      coord&
      border()
      {
        return border_;
      }

      template< class S >
      bool
      operator==(const image_size<S>& size) const
      {
        for (unsigned i = 0; i < dim; ++i)
          if (coord_[i] != size.coord_[i])
            return false;
        return true;
      }

      template< class S >
      bool
      operator!=(const image_size<S>& size) const
      {
        for (unsigned i = 0; i < dim; ++i)
          if (coord_[i] != size.coord_[i])
            return true;
        return false;
      }



      static std::string
      name()
      {
        return std::string("image_size<") +
          Exact::name() + ">";
      }

      image_size()
      {}

    protected:

      coord border_;

    private:


      coord coord_[dim];

    };

  } // end of abstract

} // end of oln


#endif // ! OLENA_CORE_ABSTRACT_IMAGE_SIZE_HH

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