rectangularcoordinates.h

/*

  This file is a part of GRALE, a library to facilitate the simulation
  and inversion of gravitational lenses.

  Copyright (C) 2008-2012 Jori Liesenborgs

  Contact: jori.liesenborgs@gmail.com
  
  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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  
*/

#ifndef GRALE_RECTANGULARCOORDINATES_H

#define GRALE_RECTANGULARCOORDINATES_H

#include "graleconfig.h"
#include "coordinateinterface.h"

namespace grale
{

class GRALE_IMPORTEXPORT RectangularCoordinates : public CoordinateInterface
{
public:
        RectangularCoordinates(Vector2D<double> bottomleft, Vector2D<double> topright, int nx, int ny)
        {
                xstep = (topright.getX()-bottomleft.getX())/((double)(nx));
                ystep = (topright.getY()-bottomleft.getY())/((double)(ny));
                xstart = bottomleft.getX();
                ystart = bottomleft.getY();
        }

        ~RectangularCoordinates()                                                                       { }
        Vector2D<double> operator()(IntVector2D pos) const                                              { return Vector2D<double>(xstep*((double)pos.getX())+xstart+xstep/2.0, ystep*((double)pos.getY())+ystart+ystep/2.0); }
        CoordinateInterface *createCopy() const;
private:
        RectangularCoordinates()                                                                        { }
        
        double xstart,ystart;
        double xstep,ystep;
};
        
} // end namespace

#endif // GRALE_RECTANGULARCOORDINATES_H