// -------------------------------------------------------------------------
// -----                  CbmLitTrackFinderSeed header file               -----
// -----                  Created 13/11/07  by A. Lebedev               -----
// -------------------------------------------------------------------------


/** CbmLitTrackFinderSeed.h
 *@author A.Lebedev <andrey.lebedev@gsi.de>
 **
 **  
 **/  

#ifndef CBMLITTRACKFINDERSEED_H
#define CBMLITTRACKFINDERSEED_H

#include "CbmLitTrackFinder.h"

#include <set>



class TClonesArray;
class CbmLitTrack;



class CbmLitTrackFinderSeed : public CbmLitTrackFinder {

public:

    // Default constructor
    CbmLitTrackFinderSeed();

    // Destructor
    ~CbmLitTrackFinderSeed();

    // Initialisation
  //  virtual void Init();

    // Track finding algorithm
  //  virtual Int_t DoFind(TClonesArray* hitArray,
  //               TClonesArray* trackArray);

protected:

    // Data
    TClonesArray* fSeedTracksArray;

    //vector with tracks, which were created from seed tracks
    std::vector<CbmLitTrack*> fTracksS;

    // Set with seed track indexes
    std::set<Int_t> fSeedsIdSet;
    
    // this extrapolation and propagation methods are used to 
    // propagate the track seeds to the detector
    CbmTrackExtrapolator *fExtrapolatorToDet;
    CbmTrackPropagator *fPropagatorToDet;
    
    virtual void ReadDetectorGeometry();
    
    // Creates tracks from seed tracks
    virtual void CreateTracksFromSeeds();

    // extrapolate tracks to the first detector layer
    void ExtrapolateToDetector();

    // Initiate tracks
    void InitTracks();

    // Copy to output TClonesArray
   // virtual void CopyToOutput(TClonesArray* trackArray);
    
    // Set iteration parameters
    virtual void SetIterPar(Double_t SigmaCoef, 
                            Int_t beginStation, 
                            Int_t endStation, 
                            Int_t maxNofMissingHitsInStation);

public:


    ClassDef(CbmLitTrackFinderSeed, 1);

};


#endif