// -*- mode: c++ -*-
//
// $Id: BrTpcTrackFollowModule.h,v 1.1.1.1 2001/06/21 14:55:13 hagel Exp $
// $Author: hagel $
// $Date: 2001/06/21 14:55:13 $
// $Copyright: (C) 2001 BRAHMS Collaboration <brahmlib@rhic.bnl.gov>
//
#ifndef BRAT_BrTpcTrackFollowModule
#define BRAT_BrTpcTrackFollowModule
#ifndef ROOT_TH1
#include "TH1.h"
#endif
#ifndef ROOT_TH2
#include "TH2.h"
#endif
#ifndef BRAT_BrTpcTrackModule
#include "BrTpcTrackModule.h"
#endif
#ifndef BRAT_BrEventNode
#include "BrEventNode.h"
#endif
#ifndef BRAT_BrDetectorVolume
#include "BrDetectorVolume.h"
#endif

class BrTpcTrackFollowModule : public BrTpcTrackModule
{
private:
  Float_t           fSearchWidthX;      // search width in x direction
  Float_t           fSearchWidthY;      // search width in y direction
  Int_t             fMaxRowsMissed;     // max number of rows allowed to miss
  BrDetectorVolume *fTpcVolume;         // TPC detector volume pointer  
  
  // histograms
  TH1F *hHitSearchDx;      // The pad hit distribtuion at the proj
  TH2F *hHitRowSearchDx;   // The pad hit dist vs row at the proj
  TH1F *hHitSearchDy;      // The time hit distribtuion at the proj
  TH2F *hHitRowSearchDy;   // The time hit dist vs row at the proj
  TH1F *hHitAcceptedDx;    // The pad hit dist for accepted hits 
  TH2F *hHitRowAcceptedDx; // The pad hit dist vs row for acc hits 
  TH1F *hHitAcceptedDy;    // The time hit dist for accepted hits 
  TH2F *hHitRowAcceptedDy; // The time hit dist vs row for acc hits 

  virtual void FindHitsNextRow(const Int_t rowNo, const Float_t *proj, 
			       const Float_t dx1, const Float_t dx2, 
			       const Float_t dy1, const Float_t dy2,
			       TObjArray &FoundHits);
  virtual void FindTracks();
  virtual void FindTracksFromRow(const Int_t istart, const Int_t ilast);
  void TrackSingleHit(const Int_t istart, const Int_t ilast);

public:
  BrTpcTrackFollowModule();
  BrTpcTrackFollowModule(const Char_t* name, const Char_t* title);
  virtual ~BrTpcTrackFollowModule () {}

  virtual void DefineHistograms();
  virtual void Event(BrEventNode* inNode, BrEventNode* outNode);

  virtual Int_t    GetMaxRowsMissed()   const {return fMaxRowsMissed;}
  virtual Double_t GetSearchWidthX()    const {return fSearchWidthX;}
  virtual Double_t GetSearchWidthY()    const {return fSearchWidthY;}

  virtual void Init();
  virtual void Print(Option_t* option="B") const; // *MENU*

  virtual void SetMaxRowsMissed(Int_t val = 3) {fMaxRowsMissed = val;}
  virtual void SetSearchWidthX(Double_t val = 0.2) {fSearchWidthX=val;}
  virtual void SetSearchWidthY(Double_t val = 0.4) {fSearchWidthY=val;}

  ClassDef(BrTpcTrackFollowModule,0) // BRAT tpc track follow module
};

#endif
//____________________________________________________________________
//
// $Log: BrTpcTrackFollowModule.h,v $
// Revision 1.1.1.1  2001/06/21 14:55:13  hagel
// Initial revision of brat2
//
// Revision 1.1  2001/06/17 17:41:47  pchristi
// The new tracking classes.
//
//