cvd/brezenham.h

/*                       
    This file is part of the CVD Library.

    Copyright (C) 2005 The Authors

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 
    51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*/
#ifndef __BREZENHAM_H
#define __BREZENHAM_H

#include <TooN/TooN.h>
#include <cvd/image_ref.h>

namespace CVD {


class Brezenham {
 public:
  Brezenham(TooN::Vector<2> dir);

  ImageRef step();

 private:
  double residual;
  double val1;
  double val2;
  ImageRef step1;
  ImageRef step2;
};


class Brezenham8 {
 public:
  Brezenham8(TooN::Vector<2> dir);

  ImageRef step();

  ImageRef sideways() {return my_sideways;}

 private:
  double residual;
  double val1;
  double val2;
  ImageRef step1;
  ImageRef step2;
  ImageRef my_sideways;
};

}

#endif

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