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SFCPath.h

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/*
 * @(#)include/SFCPath.h  1.0  2002-08-27 15:11
 *
 * Copyright (C)  2002  Daniel Léonard
 *
 * This program 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; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#ifndef _SFCPATH_H_
#define _SFCPATH_H_

#include <stdexcept>
#include <utility>

namespace halftoner
{

   class SFCPath
   {
      protected:
         SFCPath();

      public:
         virtual ~SFCPath();

         const std::pair<int, int> operator[](int pos) const throw();

      protected:

         virtual int getX(int pos) const throw() = 0;

         virtual int getY(int pos) const throw() = 0;


         static int makeInterleavedIndex(int pos) throw();
   };

}

#endif   /* #ifndef _SFCPATH_H_ */

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