VP12DViewRPhiFishEyeTransformation.h

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/*
  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
*/

//                                                            //
//  Header file for class VP12DViewRPhiFishEyeTransformation  //
//                                                            //
//  Author: Thomas Kittelmann <Thomas.Kittelmann@cern.ch>     //
//                                                            //
//  Initial version: April 2007                               //
//                                                            //
 
#ifndef VP12DVIEWRPHIFISHEYETRANSFORMATION_H
#define VP12DVIEWRPHIFISHEYETRANSFORMATION_H
 
#include "VP1Base/IVP12DViewTransformation.h"
 
class VP12DViewRPhiFishEyeTransformation : public IVP12DViewTransformation {
public:
 
  VP12DViewRPhiFishEyeTransformation();
  virtual ~VP12DViewRPhiFishEyeTransformation() {};
 
  QPointF transform(const QPointF &source) const;
  QPointF inverseTransform(const QPointF &source) const;
 
  virtual QRectF inverseTransform(const QRectF &source) const { return IVP12DViewTransformation::inverseTransform(source); }
  virtual QRectF transform(const QRectF &source) const { return IVP12DViewTransformation::inverseTransform(source); }
 
private:
 
  double m_fisheyepar;
 
};

 
#include <cmath>
 
inline QPointF VP12DViewRPhiFishEyeTransformation::transform(const QPointF &source) const
{
  QPointF p(source);
  p /= 1.0+m_fisheyepar*sqrt(source.x()*source.x()+source.y()*source.y());
  return p;
}
 
inline QPointF VP12DViewRPhiFishEyeTransformation::inverseTransform(const QPointF &source) const
{
  QPointF p(source);
  p /= 1.0-m_fisheyepar*sqrt(source.x()*source.x()+source.y()*source.y());
  return p;
}
 
#endif