#ifndef ALITPCTRACKHITS_H
#define ALITPCTRACKHITS_H
/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 * See cxx source for full Copyright notice                               */

/* $Id$ */
////////////////////////////////////////////////
//  Manager class for TPC   clusters                   //
////////////////////////////////////////////////

class TClonesArray;

#include "AliCTypes.h"
#include "TArrayOfArray.h"

class AliTPChit;
class AliTPCTempHitInfo;
class AliTPCCurrentHit;
class AliObjectArray;

class AliTrackHitsInfo   {

 public:
  AliTrackHitsInfo();
  ~AliTrackHitsInfo(){fgCounter1--;}
 
private:  
  Int_t   fTrackID;  //track ID
  Int_t   fVolumeID;   //volume ID
  UInt_t   fHitParamIndex; //corresponding index  
  static Int_t fgCounter1; //counter
  static Int_t fgCounter2;   //counter

  LClassDef(AliTrackHitsInfo,1)  
};


class AliTrackHitsParam {
 public:
  AliTrackHitsParam();
  ~AliTrackHitsParam(){fgCounter1--;}
 private:
  Float_t fR;  //radius
  Float_t fZ;  //z position
  Float_t fFi; //radial angle
  Float_t fAn; //angle with  the radial vector
  Float_t fAd; //derivation of angle
  Float_t fTheta; //theta angle
  Float_t fThetaD; //theta angle derivation
  static Int_t fgCounter1; //counter
  static Int_t fgCounter2;   //counter

  LClassDef(AliTrackHitsParam,1)  
};


class AliHitInfo {
public:
  AliHitInfo() : fHitDistance(0), fCharge(0) {fgCounter1++;fgCounter2++;}
  ~AliHitInfo(){fgCounter1--;}
 private:
  Short_t fHitDistance; //distance to previous hit
  Short_t fCharge; //deponed charge
  Short_t fTime; //hit time
  static Int_t fgCounter1; //counter
  static Int_t fgCounter2;  //counter

  LClassDef(AliHitInfo,2)
};



class AliTPCTrackHits : public TObject{
public:
  AliTPCTrackHits(); 
  ~AliTPCTrackHits();
  AliTPCTrackHits(const AliTPCTrackHits& r);
  AliTPCTrackHits & operator=(const AliTPCTrackHits& r);  

  void Clear();
  void AddHitKartez(Int_t volumeID, Int_t trackID, Double_t x, 
		    Double_t y, Double_t z,Int_t q, Float_t time);
  void AddHit(Int_t volumeID, Int_t trackID, Double_t r, 
	      Double_t z, Double_t fi,Int_t q,Float_t time);
 
  Bool_t First(); //set current hit to first hit 
  Bool_t Next(Int_t id = -1);  //set current hit to next
  AliTPChit * GetHit() const;
  AliTrackHitsParam * GetParam();
  AliHitInfo * GetHitInfo();
  Int_t  GetEntriesFast() { return fHitsPosAndQ ? fHitsPosAndQ->ArraySize():0;}
  void SetHitPrecision(Double_t prec) {fPrecision=prec;}
  void SetStepPrecision(Double_t prec) {fStep=prec;}
  void SetMaxDistance(UInt_t distance) {fMaxDistance = distance;}
  Bool_t  FlushHitStack(Bool_t force=kTRUE);    //
private:
  void FlushHitStack2(Int_t index1, Int_t index2);   //
  AliObjectArray * fTrackHitsInfo;  //quick information about track
  AliObjectArray * fTrackHitsParam;  //hit information  
  TArrayOfArrayVStack * fHitsPosAndQ;  //position information

  Double_t fPrecision;  // required precision
  Double_t fStep;       //unit step size
  UInt_t fMaxDistance;   //maximal distance between two connected hits 
  AliTPCTempHitInfo * fTempInfo; //!information about track
  AliTPCCurrentHit  * fCurrentHit; //!information about current hit 
  static const Double_t fgkPrecision;  //precision 
  static const Double_t fgkPrecision2;  //precision
  static const Double_t fgkTimePrecision;  //hit time precision 
  static Int_t fgCounter1;  // counter1
  static Int_t fgCounter2;  // counter2

  ClassDef(AliTPCTrackHits,2) 
};


#endif //ALITPCTRACKHITS_H