// Simone Bianco
// 15.07.2010

#ifndef TTLINFITTASK_H
#define TTLINFITTASK_H

// Base Class Headers ----------------
#include "FairTask.h"
#include <TGraph2D.h>
#include <TGraph2DErrors.h>
#include "TH1F.h"

// Collaborating Class Headers -------
#include <map>
#include "TString.h"
#include <iostream>

using namespace std;

// Collaborating Class Declarations --
class TClonesArray;
class TGeoManager;

class TtLinFitTask : public FairTask {

public:

  // Constructors/Destructors ---------
  TtLinFitTask();
  // TtLinFitTask(const TtLinFitTask& o){};
  //  TtLinFitTask& operator=(const TtLinFitTask& o) { return *this;};
  virtual ~TtLinFitTask();

  virtual InitStatus Init();

  virtual void Exec(Option_t* opt);

 private:

  // Input Data------------
  TClonesArray* fTCandArray;
  TString fTCandBranchName;

  // Output Data----------
  TClonesArray* fTrackArray;

  //Bool_t firstIt; 

  Int_t fTrackcount;

  Int_t fEvent;

  Double_t fEloss[6]; // energy loss in each sensor

  // Fitting ------------
 
  void  MyFit(Double_t *x,Double_t *y,Double_t *z,Double_t *Erx,Double_t *Ery,Double_t *Erz,Double_t *par, Double_t &chiX, Double_t &chiY);

  ClassDef(TtLinFitTask,1);

};

#endif