// -------------------------------------------------------------------------
// -----                       PndDrc header file                      -----
// -----               Created 11/10/06 by Annalisa Cecchi             -----
// -----                                                               -----
// -------------------------------------------------------------------------


#ifndef PNDDRC_H
#define PNDDRC_H


#include "TClonesArray.h"
#include "TLorentzVector.h"
#include "CbmDetector.h"

using namespace std;

class TClonesArray;
class PndDrcPoint;
//class PndDrcHit;
class CbmVolume; 

class PndDrc : public CbmDetector 
{

 public:

  /** Default constructor **/
  PndDrc();


  /** Standard constructor.
   *@param name    detetcor name
   *@param active  sensitivity flag
   **/
  PndDrc(const char* name, Bool_t active);


  /** Destructor **/
  virtual ~PndDrc();


  /** Virtual method Initialize
   ** Initialises detector. Stores volume IDs for DIRC detector and mirror.
   **/
  virtual void Initialize();


  /** Virtual method ProcessHits
   **
   ** Defines the action to be taken when a step is inside the
   ** active volume. Creates PndDrcPoints and PndDrcMirrorPoints and adds 
   ** them to the collections.
   *@param vol  Pointer to the active volume
   **/
  virtual Bool_t ProcessHits(CbmVolume* vol = 0);


  /** Virtual method EndOfEvent
   **
   ** If verbosity level is set, print hit collection at the
   ** end of the event and resets it afterwards.
   **/
  virtual void EndOfEvent();


  virtual void BeginEvent();
  /** Virtual method Register
   **
   ** Registers the hit collection in the ROOT manager.
   **/
  virtual void Register();


  /** Accessor to the hit collection **/
  virtual TClonesArray* GetCollection(Int_t iColl) const;


  /** Virtual method Print
   **
   ** Screen output of hit collection.
   **/
  virtual void Print() const;    


  /** Virtual method Reset
   **
   ** Clears the hit collection
   **/
  virtual void Reset();


  /** Virtual method CopyClones
   **
   ** Copies the hit collection with a given track index offset
   *@param cl1     Origin
   *@param cl2     Target
   *@param offset  Index offset
   **/
  virtual void CopyClones(TClonesArray* cl1, TClonesArray* cl2,
			  Int_t offset);


  /** Virtual method Construct geometry
   **
   **/
  virtual void ConstructGeometry();

  PndDrcPoint* AddHit(Int_t trackID, 
		      Int_t copyNo, 
		      TVector3 pos, 
		      TVector3 mom, 
		      Double_t time, 
		      Double_t length, 
		      Double_t eLoss, 
		      Double_t charge, 
		      Double_t mass, 
		      Bool_t flag, 
		      TString nam,
		      Int_t pdgCode,
		      Int_t eventID);




 private:
  
  Int_t          fTrackID;         //!  track index
  Int_t          fCopyNo;         //!  volume id
  TLorentzVector fPos;    //!  position
  TLorentzVector fMom;    //!  momentum
  Double32_t     fTime;              //!  time
  Double32_t     fLength;            //!  length
  Double32_t     fELoss;             //!  energy loss
  Int_t fPosIndex;      //! 
  Int_t volDetector;    //!  MC volume ID of drc
  Int_t screen;         //!  MC volume ID of screen

  Double_t fcharge;  
  Double_t fmass;
  Bool_t fflag;
  Int_t fpdgCode;
  Double_t fTheta;
  Double_t fPhi;
  
  //  TString fcurrnam;
  //  TString fcurrnam2;

  TClonesArray* fDrcCollection;        //! Hit collection
  Int_t fEventID;
  // reset all parameters   
  void ResetParameters();
  Int_t  fSenId1, fSenId2;
  ClassDef(PndDrc,2)

}; 



inline void PndDrc::ResetParameters() {
  fTrackID = -999; 
  fCopyNo = -999;
  fPos.SetXYZT(-999., -999., -999., -999.);
  fMom.SetXYZT(-999., -999., -999., -999.) ;
  fTime = -999;  
  fLength = -999;
  fELoss = -999; 
  fmass = -999;
  fflag = -999;
  fEventID = -999;
}


#endif