#ifndef ALITPCTRACKHITSV2_H
#define ALITPCTRACKHITSV2_H
/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 * See cxx source for full Copyright notice                               */

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

#include "TObject.h"

class TClonesArray;
class AliArrayS;
class AliTPChit;
class AliTPCTempHitInfoV2;
class AliTPCCurrentHitV2;
class AliHit;

class AliTrackHitsParamV2 : public TObject {
public:
  AliTrackHitsParamV2();
  ~AliTrackHitsParamV2();
  Int_t fTrackID; // ID of the track
  Short_t fVolumeID;// volume ID
  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
  Int_t   fNHits; //nuber of thits
  Short_t * fHitDistance; //[fNHits] array of hits distances
  Short_t * fCharge; //[fNHits] array of charges
  static Int_t fgCounter1;
  static Int_t fgCounter2;  
  ClassDef(AliTrackHitsParamV2,1)  
};



class AliTPCTrackHitsV2 : public TObject {
public:
  AliTPCTrackHitsV2(); 
  ~AliTPCTrackHitsV2();
  void Clear();
  void AddHitKartez(Int_t volumeID, Int_t trackID, Double_t x, 
		    Double_t y, Double_t z,Int_t q);
  void AddHit(Int_t volumeID, Int_t trackID, Double_t r, 
	      Double_t z, Double_t fi,Int_t q);
 
  Bool_t First(); //set current hit to first hit 
  Bool_t Next();  //set current hit to next
  AliHit * GetHit();
  AliTrackHitsParamV2 * GetParam();

  TClonesArray * GetArray(){return fArray;}
  Int_t  GetEntriesFast() { return fSize;}
  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);    //
  Int_t *  GetVolumes(){ return fVolumes;}
  Int_t GetNVolumes(){return fNVolumes;}
public:
  void AddVolume(Int_t volume); //add volumes to tthe list of volumes
  void FlushHitStack2(Int_t index1, Int_t index2);   //
  TClonesArray * fArray;  //array of compressed hits
  Int_t fSize;            //total number of hits in track
  Double_t fPrecision;  // required precision
  Double_t fStep;       //unit step size
  UInt_t fMaxDistance;   //maximal distance between two connected hits 
  Int_t fNVolumes;      //number of volumes in track  
  Int_t *  fVolumes;    //[fNVolumes] list of volumes
  AliTPCTempHitInfoV2 * fTempInfo; //!information about track
  AliTPCCurrentHitV2  * fCurrentHit; //!information about current hit 
  AliHit * fHit;                     //! current hit information
  static const Double_t fgkPrecision;  //precision 
  static const Double_t fgkPrecision2;  //precision
  static Int_t fgCounter1;
  static Int_t fgCounter2;  
  ClassDef(AliTPCTrackHitsV2,1) 
};

struct AliTPCCurrentHitV2 {
  UInt_t   fParamIndex;//  - current param pointer
  UInt_t   fStackIndex; // - current hit stack index
  Double_t fR;   //current Radius
  Bool_t  fStatus; //current status    
};   



#endif //ALITPCTRACKHITSV2_H