/********************************************************************
**                Image Component Library (ICL)                    **
**                                                                 **
** Copyright (C) 2006-2010 CITEC, University of Bielefeld          **
**                         Neuroinformatics Group                  **
** Website: www.iclcv.org and                                      **
**          http://opensource.cit-ec.de/projects/icl               **
**                                                                 **
** File   : include/ICLIO/DistFromProgArgUtil.h                    **
** Module : ICLIO                                                  **
** Authors: Christof Elbrechter                                    **
**                                                                 **
**                                                                 **
** Commercial License                                              **
** ICL can be used commercially, please refer to our website       **
** www.iclcv.org for more details.                                 **
**                                                                 **
** GNU General Public License Usage                                **
** Alternatively, this file may be used under the terms of the     **
** GNU General Public License version 3.0 as published by the      **
** Free Software Foundation and appearing in the file LICENSE.GPL  **
** included in the packaging of this file.  Please review the      **
** following information to ensure the GNU General Public License  **
** version 3.0 requirements will be met:                           **
** http://www.gnu.org/copyleft/gpl.html.                           **
**                                                                 **
** The development of this software was supported by the           **
** Excellence Cluster EXC 277 Cognitive Interaction Technology.    **
** The Excellence Cluster EXC 277 is a grant of the Deutsche       **
** Forschungsgemeinschaft (DFG) in the context of the German       **
** Excellence Initiative.                                          **
**                                                                 **
*********************************************************************/

#ifndef ICL_DIST_FROM_PROGARG_UTIL_H
#define ICL_DIST_FROM_PROGARG_UTIL_H


#include <ICLUtils/ProgArg.h>

namespace icl{

  /// utility class for getting distortion parameters from progarg environtment
  /** example usage (using additional cpp-define DIST_FROM_PROGARG:
      \code
      GenerigGrabber g(...)
      if(pa("-dist")){
         g.enableDistortion(DIST_FROM_PROGARG("-dist"),g.getDesiredSize());
      }
      
      
      int main(int n, char **ppc){
        painit(n,ppc,"-dist(float,float,float,float) ...");
      }
      \endcode
  */
  struct DistFromProgArgUtil{
    static double p[4];
    /// Construktor
    inline DistFromProgArgUtil(const std::string &s){
      p[0] = pa(s,0);
      p[1] = pa(s,1);
      p[2] = pa(s,2);
      p[3] = pa(s,3);
    }
    /// converts to double* (passable to Grabber::enableDistortion)
    operator double*(){
      return p;
    }
  };

#define DIST_FROM_PROGARG(S) DistFromProgArgUtil(S)

}

#endif