// -------------------------------------------------------------------------
// -----                   PndGemFindTracks header file                -----
// -----                  Created 19.03.2009  by R. Karabowicz         -----
// -----                 according to the PndDchFindTracks             -----
// -------------------------------------------------------------------------


/** \class PndGemFindTracks
 *  \author R. Karabowicz <r.karabowicz@gsi.de>
 *  \date 19.03.2009
 *  \brief Task class for track finding in the Gem
 * 
 *   Uses as track finding algorithm classes derived from PndGemTrackFinder. 
 *	 Input:  TClonesArray of PndGemHit or
 *	 \return TClonesArray of PndGemTrack
 **/

#ifndef PNDGEMFINDTRACKS_H
#define PNDGEMFINDTRACKS_H 1

#include "TStopwatch.h"

#include "FairTask.h"

class PndGemTrackFinder;
class PndGemDigiPar;
class TClonesArray;

class PndGemFindTracks : public FairTask
{

 public:

  /** Default constructor **/
  PndGemFindTracks();


  /** Standard constructor 
   *  \param name   Name of class
   *  \param title  Task title
   *  \param finder Finder algorithm
   **/
  PndGemFindTracks(const char* name, const char* title = "PndTask", 
		   PndGemTrackFinder* finder = NULL);


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


  /** Initialisation at beginning of each event **/
  virtual InitStatus Init();

  /** Task execution **/
  virtual void Exec(Option_t* opt);


  /** Finish at the end of each event **/
  virtual void Finish();


  /** SetParContainers **/
  virtual void SetParContainers();


  /** Accessors **/
  PndGemTrackFinder* GetFinder() 	  { return fFinder; };
  Int_t GetNofTracks()          const { return fNofTracks; };
  TString GetUseHitOrDigi()     const { return fUseHitOrDigi; };


  /** Set concrete track finder **/
  void UseFinder(PndGemTrackFinder* finder) { fFinder = finder; };

  /** Set use digi or hits
   ** Option: "hit/chit/digi", Default: "hit"
   **/
  void SetUseHitOrDigi(TString useHitOrDigi = "hit") { fUseHitOrDigi = useHitOrDigi; };
  

 private:

  PndGemDigiPar*    fDigiPar;     /** Digitisation parameters **/

  PndGemTrackFinder* fFinder;    	    ///< Pointer to TrackFinder concrete class
  TClonesArray* fGemHitOrDigiArray;     //
  TClonesArray* fTrackArray;     	    ///< Output array of PndTracks 
  TClonesArray* fTrackCandArray;     	    ///< Output array of PndTrackCands 
  Int_t fNofTracks;              	    ///< Number of created tracks
  TString fUseHitOrDigi;                ///< Choose use hits or digis, default: hits
  
  TStopwatch fTimer;
  Int_t fTNofEvents;
  Int_t fTNofTracks;
  Double_t fTTime;

  ClassDef(PndGemFindTracks,1);

};

#endif