/*! 
    \file twirl.h
    \brief Definition of ...

*/

#ifndef _TWIRL_H
#define _TWIRL_H

#include "field.h"

// FORWARD DEFINITION



//! A class for ...
class Twirl : public Field {

 public:
  Twirl();
  virtual ~Twirl();

  virtual Vector calcForce(float dt, const Vector& data) const;

 private:

};

#endif /* _TWIRL_H */