//-----------------------------------------------------------
// File and Version Information:
// $Id$
//
// Description:
//      Residual calculator for existing GFTracks
//      Just extracts residuals from the GFTrack object
//      for hits inside the TPC
//      Two modes of operation:
//      1. Unbiased residuals if input GFTracks have been
//         fitted with smoothing turned on
//      2. Biased residuals obtained by using a fixed 
//         GFAbsTracKRep
//      Don't forget to set the TpcClusterBranchName, which
//      is needed as detectotID when working with 
//      GFTrackCands (even though we don't use clusters here)
//      Assumed GFTracks are initialized (have RecoHits)
//     
// Environment:
//      Software developed for the GEM-TPC detector
//
// Author List:
//	Felix Boehmer    	TUM     (original author)
//
//-----------------------------------------------------------


#ifndef TPCGFTRKRES_HH
#define TPCGFTRKRES_HH


#include "AbsRefTrackResCalc.h"

#include "TString.h"

class GFRecoHitFactory;

class TpcGFTrackResCalc : public AbsRefTrackResCalc {

 public:
  TpcGFTrackResCalc();
  virtual ~TpcGFTrackResCalc();
  
  virtual int calc();
  virtual bool init();
  void setSmoothedInput(bool opt) {fSmoothedInput=opt;}
  void setTrackRepID(unsigned int n) {fRepID=n;}
  void setClusterBranchName(const TString& n) {fClBranchName=n;}
  void setRequireGoodFit(bool opt=true) {fRequireGoodFit=opt;}
  void setTrackRepId(int id) {fRepID = id;}
    
 private:
  TString fGFTrackBranchName;
  TString fClBranchName; //needed for detectorID definition
                              //when processing the GFTrackCands!
                              //UGLY, but necessary (blame GSI)
  TClonesArray* fTrackArray;
  bool fSmoothedInput;        //tell me if input GFTracks have been
                              //fitted with smoothing turned on.
                              //true: will use GFTools for unb. residuals
                              //false: calc. residuals by manual rep. extrapolation
  //bool fInitTracks;           //true: build GFAbsRecoHits
  bool fRequireGoodFit;       //true: Only accept GFTracks with statusFlag == 0 

  int fRepID;                 //default: -1  ==> use CardinalRep
  
  //GFRecoHitFactory* fFactory;

};

#endif