KalmanFitStatus.h

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/* Copyright 2008-2010, Technische Universitaet Muenchen,
   Authors: Christian Hoeppner & Sebastian Neubert & Johannes Rauch
 
   This file is part of GENFIT.
 
   GENFIT is free software: you can redistribute it and/or modify
   it under the terms of the GNU Lesser General Public License as published
   by the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
 
   GENFIT is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU Lesser General Public License for more details.
 
   You should have received a copy of the GNU Lesser General Public License
   along with GENFIT.  If not, see <http://www.gnu.org/licenses/>.
*/
 
#ifndef genfit_KalmanFitStatus_h
#define genfit_KalmanFitStatus_h
 
#include "FitStatus.h"
 
#include <Math/ProbFunc.h>
 
 
namespace genfit {

class KalmanFitStatus : public FitStatus {
 
 public:
 
  KalmanFitStatus() :
    FitStatus(), numIterations_(0), fittedWithDaf_(false), fittedWithReferenceTrack_(false),
    trackLen_(0), fChi2_(-1e99), fNdf_(-1e99), fPval_(-1e99) {;}
 
  virtual ~KalmanFitStatus() {};
 
  virtual FitStatus* clone() const override {return new KalmanFitStatus(*this);}
 
  unsigned int getNumIterations() const {return numIterations_;}
  bool isFittedWithDaf() const {return fittedWithDaf_;}
  bool isFittedWithReferenceTrack() const {return fittedWithReferenceTrack_;}
  double getTrackLen() const {return trackLen_;}
  double getForwardChi2() const {return fChi2_;}
  double getBackwardChi2() const {return FitStatus::getChi2();}
  double getForwardNdf() const {return fNdf_;}
  double getBackwardNdf() const {return FitStatus::getNdf();}
  // virtual double getPVal() : not overridden, as it does the right thing.
  double getForwardPVal() const {return std::max(0.,ROOT::Math::chisquared_cdf_c(fChi2_, fNdf_));}
  double getBackwardPVal() const {return FitStatus::getPVal(); }
 
  void setNumIterations(unsigned int numIterations) {numIterations_ = numIterations;}
  void setIsFittedWithDaf(bool fittedWithDaf = true) {fittedWithDaf_ = fittedWithDaf;}
  void setIsFittedWithReferenceTrack(bool fittedWithReferenceTrack = true) {fittedWithReferenceTrack_ = fittedWithReferenceTrack;}
  void setTrackLen(double trackLen) {trackLen_ = trackLen;}
  void setForwardChi2(double fChi2) {fChi2_ = fChi2;}
  void setBackwardChi2(double bChi2) {FitStatus::setChi2(bChi2);}
  void setForwardNdf(double fNdf) {fNdf_ = fNdf;}
  void setBackwardNdf(double bNdf) {FitStatus::setNdf(bNdf);}
 
  virtual void Print(const Option_t* = "") const override;
 
 protected:
 
  unsigned int numIterations_; // number of iterations that have been performed
  bool fittedWithDaf_;
  bool fittedWithReferenceTrack_;
 
  double trackLen_;
 
  double fChi2_; // chi^2 of the forward fit
  double fNdf_; // degrees of freedom of the forward fit
  double fPval_; // p-value of the forward fit, set whenever either of chi2 or ndf changes
 
 public:
 
  ClassDefOverride(KalmanFitStatus, 1)
 
};
 
} /* End of namespace genfit */
 
#endif // genfit_KalmanFitStatus_h