//-----------------------------------------------------------
// File and Version Information:
// $Id$
//
// Description:
//      Chi2 cleanup of "failed" GF fits due to outliers
//      Sets statusflag for tracks that differ too much 
//      in between forward and backward extrapolation
//      
//
// Environment:
//      Software developed for the PANDA Detector at FAIR.
//
// Author List:
//      Felix Boehmer           TUM      (original author)  
//
//-----------------------------------------------------------

#ifndef CHI2CLEANUPTASK_H
#define CHI2CLEANUPTASK_H

//Base class
#include "FairTask.h"
#include "TString.h"

#include <vector>



// Collaborating Class Declarations --------------------------------------

class TpcDigiPar;
class TCLonesArray;

class Chi2CleanupTask : public FairTask {

public:

// Constructor ----------------------------------------------

  Chi2CleanupTask();			//default constructor
  virtual ~Chi2CleanupTask() {;}
  
  virtual InitStatus Init();	 
  virtual void Exec(Option_t* opt);
  
  virtual void SetParContainers();
  
// Setters --------------------------------------------------
  
  void SetTrackBranchName(const TString& d) {fTrackBranchName=d;}
  void SetVerbose(Bool_t opt=kTRUE) {fVerbose=opt;}
  void SetHitNDF(unsigned int ndf) {fNDF=ndf;}
  void SetnRep(unsigned int nr) {fnRep=nr;}
  
  //absolute values to perfom chi2 difference cut:
  void AddDiffCutWindow(double low, double high) {fLow.push_back(low); fHigh.push_back(high); fCutInit=true;}
  
  //fractional window defining which hits to consider for the cut
  void SetHitWindow(double low, double high) {fFracL=low; fFracH=high; fWindowInit=true;}


private:

  TString fTrackBranchName;
  TClonesArray* fTrackArr;
  
  TpcDigiPar* fPar;

  unsigned int fNDF;  //NDF of the track hits we're investigating
  unsigned int fnRep;  //which trackrep to be used
  double fFracL;
  double fFracH;

  bool fWindowInit;
  bool fCutInit;
  
  std::vector<double> fLow;
  std::vector<double> fHigh;

public:
  ClassDef(Chi2CleanupTask,1)
	
};

#endif