CbmVertex.h

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/* Copyright (C) 2006-2024 GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
   SPDX-License-Identifier: GPL-3.0-only
   Authors: Volker Friese, Florian Uhlig, Alex Bercuci, Denis Bertini [committer] */
 
// -------------------------------------------------------------------------
// -----                      CbmVertex header file                    -----
// -----                  Created 28/11/05  by V. Friese               -----
// -------------------------------------------------------------------------
 
 
#ifndef CBMVERTEX_H
#define CBMVERTEX_H 1
 
#include <Rtypes.h>          // for ClassDef
#include <RtypesCore.h>      // for Double32_t
#include <TMatrixFSymfwd.h>  // for TMatrixFSym
#include <TNamed.h>          // for TNamed
#include <TVector3.h>        // for TVector3
 
#include <cstdint>
#include <string>  // for string
#include <vector>  // for global track indices
 
class CbmVertex : public TNamed {
 
public:
  CbmVertex();
 
 
  CbmVertex(const char* name, const char* title);
 
 
  CbmVertex(const char* name, const char* title, double x, double y, double z, double chi2, int32_t ndf,
            int32_t nTracks, const TMatrixFSym& covMat);
 
 
  virtual ~CbmVertex();
 
 
  virtual void Print(Option_t* opt = "") const;
 
 
  double GetX() const { return fX; };               // x position [cm]
  double GetY() const { return fY; };               // y position [cm]
  double GetZ() const { return fZ; };               // z posiiton [cm]
  double GetChi2() const { return fChi2; };         // chi2
  int32_t GetNDF() const { return fNDF; };          // nof degrees of freedom
  int32_t GetNTracks() const { return fNTracks; };  // nof tracks used
  void Position(TVector3& pos) const { pos.SetXYZ(fX, fY, fZ); };
  void CovMatrix(TMatrixFSym& covMat) const;
  double GetCovariance(int32_t i, int32_t j) const;
 
  int32_t GetTrackIndex(int32_t iTrack) const;
  bool FindTrackByIndex(uint32_t iTrack) const;
  bool SetTracks(std::vector<uint32_t>& indexVector);
 
  void Reset();
 
 
  void SetVertex(double x, double y, double z, double chi2, int32_t ndf, int32_t nTracks, const TMatrixFSym& covMat);
 
 
  virtual std::string ToString() const;
 
 
private:
  Double32_t fX, fY, fZ;
 
  Double32_t fChi2;
 
  int32_t fNDF;
 
  int32_t fNTracks;
 
  Double32_t fCovMatrix[6];
 
  std::vector<uint32_t> fTrkIdx = {};
 
  ClassDef(CbmVertex, 2);
};
 
 
#endif