/**
    \file Cityblock2D.h
    Header file for Cityblock2D distance transform class which, given and
    input binary image, calculates the corresponding distance transform.

    \author George J. Grevera, Ph.D., ggrevera@sju.edu

    Copyright (C) 2002, George J. Grevera

    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.

    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 or from http://www.gnu.org/licenses/gpl.txt.

    This General Public License does not permit incorporating this
    code into proprietary programs.  (So a hypothetical company such
    as GH (Generally Hectic) should NOT incorporate this code into
    their proprietary programs.)
 */
#ifndef Cityblock2D_h
#define Cityblock2D_h

#include "DistanceTransform.h"
//----------------------------------------------------------------------
/// Distance transform in which diagonals are not allowed.
class Cityblock2D : public DistanceTransform {

public:
    Cityblock2D ( const int xSize, const int ySize, const bool unload=true )
        : DistanceTransform(xSize, ySize, unload)
    {
    }

    void doTransform ( const unsigned char* const I ) {
        doTransform(I, true);
    }

    void doTransform ( const unsigned char* const I,
                       const bool halfIsZero );

};

#endif
//----------------------------------------------------------------------

