// Interactor.h

#ifndef Interactor_H
#define Interactor_H

// This is an interface base class for interactors, object that modify
// an ETrack.  Thes mican account for dE/dx, MS.. etc.

#include "trfobj/TrfObject.h"

namespace trf {

class ETrack;

class Interactor : public TrfObject {

private:  // Static data.

  // Return the type name.
  static TypeName get_type_name() { return "Interactor"; }

  // Return the creator.
  static ObjCreator get_creator();

  // Return the type.
  static Type get_static_type() { return get_creator(); }

public:

  // Destructor.
  virtual ~Interactor();

  // Return the generic type.
  // This is only needed at this level.
  Type get_generic_type() const { return get_static_type(); }

  // Return the type.
  Type get_type() const { return get_static_type(); }

  // Interact: modify the track vector and error matrix.
  virtual void interact(ETrack& tre) const =0;

  // Make a clone of this object.
  virtual Interactor* new_copy() const =0;

};

}  // end namespace trf

#endif