// -*- mode: c++ -*-
//
// $Id: BrTpcFitCluster.h,v 1.2 2001/06/22 17:45:28 cholm Exp $
// $Author: cholm $
// $Date: 2001/06/22 17:45:28 $
// $Copyright: (C) 2001 BRAHMS Collaboration <brahmlib@rhic.bnl.gov>
//
#ifndef BRAT_BrTpcFitCluster
#define BRAT_BrTpcFitCluster

#ifndef ROOT_TObject
#include "TObject.h"
#endif
#ifndef ROOT_TVirtualFitter
#include "TVirtualFitter.h"
#endif
#ifndef BRAT_BrTpcCluster
#include "BrTpcCluster.h"
#endif

class BrTpcFitCluster : public TObject
{
private:
  static BrTpcFitCluster* fgInstance;
  static Int_t            fgMaxFitPoints;
  Int_t                   fNfitPoints;
  TVirtualFitter*         fMinuit;
  Double_t*               fZ;
  Double_t*               fEZ;
  Double_t*               fX;
  Double_t*               fY;
  BrTpcCluster*           fCluster;

  void     AddDataPoint(Double_t zVal, Double_t ezVal, 
			Double_t xVal, Double_t yVal);
  void     Fit();
  Double_t Func(Double_t x, Double_t y, Double_t *par);

public:
  BrTpcFitCluster();
  ~BrTpcFitCluster();

  static BrTpcFitCluster* Instance() { return fgInstance; }

  Double_t      ChiSquare(Double_t *par);
  void          Clear();
  void          FitCluster(BrTpcCluster *cluster);
  Int_t         GetNPoints(void) { return fNfitPoints;}
  
  ClassDef(BrTpcFitCluster,0) // BRAT cluster fitter
};

#endif
//____________________________________________________________________
//
// $Log: BrTpcFitCluster.h,v $
// Revision 1.2  2001/06/22 17:45:28  cholm
// Change names so that every data class has the same format, so that
// we will not have to worry about that later on. The affected classes
// are:
//
//         BrTPCSequence       ->        BrTpcSequence
//         BrTPCCluster        ->        BrTpcCluster
//         BrTPCClusterTable   ->        BrTpcClusterTable
//
// These changes has ofcourse been propegated to the modules as well,
// giving the changes
//
//         BrTPCClusterFinder  ->        BrTpcClusterFinder
//         BrTPCSequenceAdder  ->        BrTpcSequenceAdder
//
// Revision 1.1.1.1  2001/06/21 14:55:13  hagel
// Initial revision of brat2
//
// Revision 1.1  2001/06/17 17:32:18  pchristi
// New classes and test programs. None are used in the clustering.
//
//