/**
 * \file CbmLitFindMvdTracks.h
 * \brief MVD tracking based on littrack package.
 * \author Andrey Lebedev <andrey.lebedev@gsi.de>
 * \date 2011
 *
 */
#ifndef CBMLITFINDMVDTRACKS_H_
#define CBMLITFINDMVDTRACKS_H_

#include "base/CbmLitPtrTypes.h"
#include "data/CbmLitHit.h"
#include "FairTask.h"

/**
 * \class CbmLitFindMvdTracks.h
 * \brief MVD tracking based on littrack package.
 * \author Andrey Lebedev <andrey.lebedev@gsi.de>
 * \date 2011
 *
 * This MVD tracking uses STS tracks as seeds,
 * propagates tracks through MVD and attaches
 * nearest MVD hits.
 *
 */
class CbmLitFindMvdTracks : public FairTask
{
public:
   /**
    * \brief Constructor.
    */
   CbmLitFindMvdTracks();

   /**
    * \brief Destructor.
    */
   virtual ~CbmLitFindMvdTracks();

   /**
    * \brief Inherited from FairTask.
    */
   virtual InitStatus Init();

   /**
    * \brief Inherited from FairTask.
    */
   virtual void Exec(Option_t* opt);

   /**
    * \brief Inherited from FairTask.
    */
   virtual void SetParContainers();

private:
   /**
    * \brief Inherited from FairTask.
    */
   virtual void Finish();

   /**
    * \brief Read necessary data branches from the input data files.
    */
   void ReadAndCreateDataBranches();

   /**
    * \brief Convert input data from CBMROOT data classes to littrack data classes.
    */
   void ConvertInputData();

   /**
    * \brief Convert output littrack data classes to CBMROOT data classes.
    */
   void ConvertOutputData();

   /**
    * \brief Run track reconstruction.
    */
   void RunTrackReconstruction();

   /**
    * \brief Clear arrays and free memory.
    */
   void ClearArrays();

   // Pointers to data arrays
   TClonesArray* fStsTracks; // CbmStsTrack array
   TClonesArray* fMvdHits; // CbmMvdHits

   // littrack data arrays
   TrackPtrVector fLitStsTracks; // STS tracks
   HitPtrVector fLitMvdHits; // MVD
   TrackPtrVector fLitOutputTracks; // output Lit tracks

   // Tools
   TrackFinderPtr fFinder; // track finder

   Int_t fEventNo; // event counter

   CbmLitFindMvdTracks(const CbmLitFindMvdTracks&);
   CbmLitFindMvdTracks& operator=(const CbmLitFindMvdTracks&);
   
   ClassDef(CbmLitFindMvdTracks, 1);
};

#endif /* CBMLITFINDMVDTRACKS_H_ */