// AddFitZPlane_Z2.h

#ifndef AddFitZPlane_Z2_H
#define AddFitZPlane_Z2_H

// An add fitter to add a zplane (x,y)-measurement to a track
// with no hits.

#include "trffit/AddFitter.h"
#include "trfbase/ObjDoublePtr.h"

namespace trf {

class AddFitZPlane_Z2 : public AddFitter {

protected :
 
 double _qptmax2;

public:  // static methods

  // Return the type name.
  static TypeName get_type_name() { return "AddFitZPlane_Z2"; }

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

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

private:  // methods

  // ouput stream
  void ostr(std::ostream& stream) const;

public:  // methods

  // constructor
  AddFitZPlane_Z2( double ptmin );

  // destructor
  ~AddFitZPlane_Z2();

  // add the hit
  int add_hit(HTrack& trh, const HitPtr& phit) const;

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

  // Write the object data.
  ObjData write_data() const;

  double get_ptmin() const { return std::sqrt(1./_qptmax2); }
  
};

}  // end namespace trf

#endif