PndSttTrack Class Reference

#include <PndSttTrack.h>

Inheritance diagram for PndSttTrack:

Public Member Functions
	PndSttTrack ()
virtual	~PndSttTrack ()
void	Print ()
Int_t	GetTrackCandIndex ()
Int_t	GetNofHelixHits () const
Int_t	GetHelixHitIndex (Int_t iHit) const
Int_t	GetPidHypo () const
Int_t	GetFlag () const
Double_t	GetChi2Long () const
Double_t	GetChi2Rad () const
Int_t	GetNDF () const
Double_t	GetDist ()
Double_t	GetPhi ()
Double_t	GetRad ()
Double_t	GetTanL ()
Double_t	GetZ ()
Int_t	GetCharge ()
Double_t	CalculateScosl (Double_t x, Double_t y)
TVector3 *	MomentumAtPoint (TVector3 *point)
TVector3 *	PCAToPoint (TVector3 *point)
void	SetTrackCandIndex (Int_t trackCandID)
void	SetPidHypo (Int_t pid)
void	SetParameters (Double_t d, Double_t phi, Double_t r, Double_t tanl, Double_t z)
void	SetDist (Double_t dist)
void	SetPhi (Double_t phi)
void	SetRad (Double_t r)
void	SetTanL (Double_t tanl)
void	SetZ (Double_t z)
void	SetCharge (Int_t charge)
void	SetFlag (Int_t flag)
void	SetChi2Long (Double_t chi2)
void	SetChi2Rad (Double_t chi2)
void	SetNDF (Int_t ndf)
void	AddHelixHit (Int_t size, Int_t index, Int_t helixhitindex)

Private Member Functions
	ClassDef (PndSttTrack, 1)

Private Attributes
TArrayI	fHelixHits
Int_t	fPidHypo
Double_t	fDist
	// CHECK not for now, maybe in future if needed More...
Double_t	fPhi
Double_t	fRad
Double_t	fTanL
Double_t	fZ
Int_t	fH
Int_t	fFlag
Double_t	fChi2Long
Int_t	fNDF
	// CHECK not for now, maybe in future if needed More...
Double_t	fChi2Rad
	// CHECK not for now, maybe in future if needed More...
Int_t	fTrackCandIndex
	// CHECK not for now, maybe in future if needed More...

Detailed Description

Definition at line 28 of file PndSttTrack.h.

Constructor & Destructor Documentation

PndSttTrack::PndSttTrack

(

)

Default constructor

Definition at line 17 of file PndSttTrack.cxx.

                         :
    fHelixHits(TArrayI()),fPidHypo(0), fDist(0.), fPhi(0.), fRad(0.), fTanL(0.), fZ(0.), fH(0), fFlag(0), fChi2Long(0.),  fNDF(0), fChi2Rad(0.), fTrackCandIndex(0)
{
}

PndSttTrack::~PndSttTrack ( )

virtual

Destructor

Definition at line 26 of file PndSttTrack.cxx.

{}

Member Function Documentation

void PndSttTrack::AddHelixHit	(	Int_t	size,
		Int_t	index,
		Int_t	helixhitindex
	)

Definition at line 42 of file PndSttTrack.cxx.

References fHelixHits.

Referenced by PndSttHelixHitProducer::Exec().

{
  //  fHelixHits.Reset();
    fHelixHits.Set(size);
    fHelixHits[index] = helixhitindex;
    AddLink(FairLink("STTHelixHit", helixhitindex));
}

Double_t PndSttTrack::CalculateScosl	(	Double_t	x,
		Double_t	y
	)

Definition at line 129 of file PndSttTrack.cxx.

References CAMath::ATan2(), CAMath::Cos(), Double_t, fDist, fH, fPhi, fRad, CAMath::Sin(), x0, and y0.

Referenced by PndSttHelixHitProducer::Exec(), PCAToPoint(), PndSttHelixTrackFitter::ZFinder(), PndSttHelixTrackFitter::ZFinderThroughOrigin(), PndSttHelixTrackFitter::ZFit(), and PndSttHelixTrackFitter::ZFitThroughOrigin().

{

  Double_t x_0 = (fDist + fRad) * TMath::Cos(fPhi);
  Double_t y_0 = (fDist + fRad) * TMath::Sin(fPhi);

  Double_t x0 = fDist * TMath::Cos(fPhi);
  Double_t y0 = fDist * TMath::Sin(fPhi);

  Double_t Phi0 = TMath::ATan2((y0 - y_0),(x0 - x_0));

  //  cout << "calculate Phi0: " << Phi0 << " v0: " << x0 << " " << y0 << endl;
  //  cout << "phi: " << fPhi << " Phi0: " << Phi0 << endl;

  Double_t scos = -fH * fRad * TMath::ATan2((y - y0) * TMath::Cos(Phi0) - (x - x0) * TMath::Sin(Phi0) , fRad + (x - x0) * TMath::Cos(Phi0) + (y - y0) * TMath::Sin(Phi0));

  return scos;

}

PndSttTrack::ClassDef ( PndSttTrack  , 1    )

private

Int_t PndSttTrack::GetCharge ( )

inline

Definition at line 63 of file PndSttTrack.h.

References fH.

Referenced by PndSttHelixTrackFitter::DoFitPlain(), PndSttTrackFitterQATask::Exec(), and GetEntriesFast().

{return fH; };

Double_t PndSttTrack::GetChi2Long ( ) const

inline

Definition at line 52 of file PndSttTrack.h.

References fChi2Long.

{ return fChi2Long; };

Double_t PndSttTrack::GetChi2Rad ( ) const

inline

Definition at line 53 of file PndSttTrack.h.

References fChi2Rad.

{ return fChi2Rad; };

Double_t PndSttTrack::GetDist ( )

inline

parameters of the helix: d0, phi0, Rad, tanlambda, z0

Definition at line 57 of file PndSttTrack.h.

References fDist.

Referenced by PndSttHelixTrackFitter::DoFitPlain(), PndSttTrackFitterQATask::Exec(), PndSttHelixHitProducer::Exec(), PndSttHelixTrackFitter::FinishEventDisplay(), GetEntriesFast(), PndSttHelixTrackFitter::IntersectionFinder(), PndSttHelixTrackFitter::MinuitFit(), PndSttHelixTrackFitter::XYFit(), PndSttHelixTrackFitter::XYFitThroughOrigin(), PndSttHelixTrackFitter::ZFinder(), and PndSttHelixTrackFitter::ZFinderThroughOrigin().

{return fDist; };

Int_t PndSttTrack::GetFlag ( ) const

inline

Definition at line 51 of file PndSttTrack.h.

References fFlag.

Referenced by FairGeaneTrKalStt::Exec(), FairGeaneTrT::Exec(), PndSttTrackFitterQATask::Exec(), and PndSttHelixTrackFitter::FinishEventDisplay().

{ return fFlag; };

Int_t PndSttTrack::GetHelixHitIndex ( Int_t  iHit ) const

inline

Definition at line 49 of file PndSttTrack.h.

References fHelixHits.

Referenced by PndSttTrackFitterQATask::Exec(), and GetEntriesFast().

{ return fHelixHits.At(iHit); };

Int_t PndSttTrack::GetNDF ( ) const

inline

Definition at line 54 of file PndSttTrack.h.

References fNDF.

{ return fNDF; };

Int_t PndSttTrack::GetNofHelixHits ( ) const

inline

Reconstructed "Helix" Hits

Definition at line 48 of file PndSttTrack.h.

References fHelixHits.

Referenced by PndSttTrackFitterQATask::Exec(), and GetEntriesFast().

{ return fHelixHits.GetSize(); };

Double_t PndSttTrack::GetPhi ( )

inline

Definition at line 58 of file PndSttTrack.h.

References fPhi.

Referenced by PndSttHelixTrackFitter::DoFitPlain(), PndSttTrackFitterQATask::Exec(), PndSttHelixHitProducer::Exec(), PndSttHelixTrackFitter::FinishEventDisplay(), GetEntriesFast(), PndSttHelixTrackFitter::IntersectionFinder(), PndSttHelixTrackFitter::MinuitFit(), PndSttHelixTrackFitter::XYFit(), PndSttHelixTrackFitter::XYFitThroughOrigin(), PndSttHelixTrackFitter::ZFinder(), and PndSttHelixTrackFitter::ZFinderThroughOrigin().

{return fPhi; };

Int_t PndSttTrack::GetPidHypo ( ) const

inline

Definition at line 50 of file PndSttTrack.h.

References fPidHypo.

{ return fPidHypo; };

Double_t PndSttTrack::GetRad ( )

inline

Definition at line 59 of file PndSttTrack.h.

References fRad.

Referenced by PndSttHelixTrackFitter::DoFitPlain(), PndSttTrackFitterQATask::Exec(), PndSttHelixHitProducer::Exec(), PndSttHelixTrackFitter::FinishEventDisplay(), GetEntriesFast(), PndSttHelixTrackFitter::IntersectionFinder(), PndSttHelixTrackFitter::MinuitFit(), PndSttHelixTrackFitter::XYFit(), PndSttHelixTrackFitter::XYFitThroughOrigin(), PndSttHelixTrackFitter::ZFinder(), and PndSttHelixTrackFitter::ZFinderThroughOrigin().

{return fRad; };

Double_t PndSttTrack::GetTanL ( )

inline

Definition at line 60 of file PndSttTrack.h.

References fTanL.

Referenced by PndSttHelixTrackFitter::DoFitPlain(), PndSttTrackFitterQATask::Exec(), PndSttHelixHitProducer::Exec(), PndSttHelixTrackFitter::FinishEventDisplay(), and GetEntriesFast().

{return fTanL; };

Int_t PndSttTrack::GetTrackCandIndex ( )

inline

Native Hits attached via PndTrackCand

Definition at line 45 of file PndSttTrack.h.

References fTrackCandIndex.

Referenced by PndSttHelixHitProducer::Exec(), and PndSttTrackFitterQATask::Exec().

{return fTrackCandIndex; }

Double_t PndSttTrack::GetZ ( )

inline

Definition at line 61 of file PndSttTrack.h.

References fZ.

Referenced by PndSttHelixHitProducer::Exec(), PndSttHelixTrackFitter::FinishEventDisplay(), and GetEntriesFast().

{return fZ; };

TVector3 * PndSttTrack::MomentumAtPoint

(

TVector3 *

point

)

Definition at line 90 of file PndSttTrack.cxx.

References alpha, CAMath::Cos(), Double_t, fDist, fH, fPhi, fRad, fTanL, m, pt(), R, CAMath::Sin(), and tanl.

                                                     {
  
  // transverse momentum ..................................
  Double_t pt = 0., px = 0., py = 0.;
  
  // tangent in point on track
  Double_t R = fRad;
  Double_t xc = (fDist + fRad) * TMath::Cos(fPhi);
  Double_t yc = (fDist + fRad) * TMath::Sin(fPhi);
  Double_t m = (yc - point->Y()) / (xc - point->X());
  Double_t mt = -1./m;
  Double_t alpha = TMath::ATan(mt);
  
  pt = 0.006 * R;
  px = pt * TMath::Cos(alpha);
  py = pt * TMath::Sin(alpha);
  
  
  // negative NO if point higher than center
  // positive NO if point lower than center
  if((fH < 0 &&  (yc - point->Y()) < 0) || (fH > 0 &&  (yc - point->Y()) > 0))
    {
      px = -px;
      py = -py;
    }
  else if(fH == 0) cout << "NO CHARGE" << endl;
  
  // longitudinal momentum ..................................
  Double_t pl = 0.;
  
  Double_t tanl = fTanL;
  pl = pt * tanl;
  
  TVector3 *ptotcl = new TVector3(px, py, pl);
 
  return ptotcl;
}

TVector3 * PndSttTrack::PCAToPoint

(

TVector3 *

point

)

Definition at line 52 of file PndSttTrack.cxx.

References CalculateScosl(), CAMath::Cos(), Double_t, fDist, fPhi, fRad, fTanL, fZ, m, R, CAMath::Sin(), sqrt(), z, and z0.

                                                {

  // transverse  
  Double_t R = fRad;
  Double_t xc = (fDist + fRad) * TMath::Cos(fPhi);
  Double_t yc = (fDist + fRad) * TMath::Sin(fPhi);
 
  // transverse -> circle
  // 1. find the line joining the point and the centre
  Double_t m = (yc - point->Y()) / (xc - point->X());
  Double_t q = yc - m * xc;

  // 2. find the point on track closest to point
  // +
  Double_t x1 = (-(m*(q - yc) - xc) + sqrt((m*(q - yc) - xc)*(m*(q - yc) - xc) - (m*m + 1)*((q - yc)*(q - yc) + xc*xc - R*R))) / (m*m + 1);
  Double_t y1 = m*x1 + q;
  // - 
  Double_t x2 = (-(m*(q - yc) - xc) - sqrt((m*(q - yc) - xc)*(m*(q - yc) - xc) - (m*m + 1)*((q - yc)*(q - yc) + xc*xc - R*R))) / (m*m + 1);
  Double_t y2 = m*x2 + q;
  
  Double_t dist1 = sqrt((point->Y() - y1)*(point->Y() - y1) + (point->X() - x1)*(point->X() - x1));
  Double_t dist2 = sqrt((point->Y() - y2)*(point->Y() - y2) + (point->X() - x2)*(point->X() - x2));
 
  TVector3 *clsontrk; // close on track
  if(dist1 < dist2) clsontrk = new TVector3(x1, y1, 0.);
  else clsontrk = new TVector3(x2, y2, 0.);

  // longitudinal: find the z correspondent to the PCA in x, y (CHECK not in 3D!!!)
  Double_t clstrkln = CalculateScosl(clsontrk->X(), clsontrk->Y());
  Double_t z0 = fZ;
  Double_t zslope = fTanL;
  Double_t z = z0 + zslope * clstrkln;
  clsontrk->SetZ(z);

  return clsontrk;
}

void PndSttTrack::Print

(

)

Public method Print Output to screen

Definition at line 31 of file PndSttTrack.cxx.

References fDist, fFlag, fPhi, fRad, fTanL, fTrackCandIndex, and fZ.

{
  cout << " Reco track corresponding to track cand: " 
       << fTrackCandIndex  << endl;
  cout << " Parameters of the helix: " << endl;
  cout << fDist << " " << fPhi << " " << fRad << " " << fTanL << " " << fZ << endl;
  //  cout << "Chi2Long: " << fChi2Long << ", Chi2Rad: " << fChi2Rad << endl; 
  cout << "Quality flag " << fFlag << endl; // CHECK add number of helix hits
}

void PndSttTrack::SetCharge ( Int_t  charge )

inline

Definition at line 92 of file PndSttTrack.h.

References fH.

Referenced by PndSttHelixTrackFitter::MinuitFit(), PndSttHelixTrackFitter::XYFit(), and PndSttHelixTrackFitter::XYFitThroughOrigin().

{fH = charge;}

void PndSttTrack::SetChi2Long ( Double_t  chi2 )

inline

Definition at line 96 of file PndSttTrack.h.

References fChi2Long.

{ fChi2Long   = chi2; };

void PndSttTrack::SetChi2Rad ( Double_t  chi2 )

inline

Definition at line 97 of file PndSttTrack.h.

References fChi2Rad.

{ fChi2Rad    = chi2; };

void PndSttTrack::SetDist ( Double_t  dist )

inline

Definition at line 87 of file PndSttTrack.h.

References fDist.

Referenced by PndSttHelixTrackFitter::MinuitFit(), PndSttHelixTrackFitter::XYFit(), and PndSttHelixTrackFitter::XYFitThroughOrigin().

{fDist = dist;}

void PndSttTrack::SetFlag ( Int_t  flag )

inline

Definition at line 95 of file PndSttTrack.h.

References fFlag.

Referenced by PndSttHelixTrackFitter::DoFitPlain().

{ fFlag       = flag; };

void PndSttTrack::SetNDF ( Int_t  ndf )

inline

Definition at line 98 of file PndSttTrack.h.

References fNDF.

{ fNDF        = ndf;  };

void PndSttTrack::SetParameters ( Double_t  d, Double_t  phi, Double_t  r, Double_t  tanl, Double_t  z  )

inline

Definition at line 80 of file PndSttTrack.h.

References d, fDist, fPhi, fRad, fTanL, fZ, phi, r, tanl, and z.

                                                                                      {
    fDist = d;
    fPhi = phi;
    fRad = r;
    fTanL = tanl;
    fZ = z; };

void PndSttTrack::SetPhi ( Double_t  phi )

inline

Definition at line 88 of file PndSttTrack.h.

References fPhi, and phi.

Referenced by PndSttHelixTrackFitter::MinuitFit(), PndSttHelixTrackFitter::XYFit(), and PndSttHelixTrackFitter::XYFitThroughOrigin().

{fPhi = phi;}

void PndSttTrack::SetPidHypo ( Int_t  pid )

inline

Definition at line 79 of file PndSttTrack.h.

References fPidHypo, and pid().

{ fPidHypo    = pid;  };

void PndSttTrack::SetRad ( Double_t  r )

inline

Definition at line 89 of file PndSttTrack.h.

References fRad, and r.

Referenced by PndSttHelixTrackFitter::DoFitPlain(), PndSttHelixTrackFitter::MinuitFit(), PndSttHelixTrackFitter::XYFit(), and PndSttHelixTrackFitter::XYFitThroughOrigin().

{fRad = r;}

void PndSttTrack::SetTanL ( Double_t  tanl )

inline

Definition at line 90 of file PndSttTrack.h.

References fTanL, and tanl.

Referenced by PndSttHelixTrackFitter::ZFit(), and PndSttHelixTrackFitter::ZFitThroughOrigin().

{fTanL = tanl;}

void PndSttTrack::SetTrackCandIndex ( Int_t  trackCandID )

inline

Modifiers

Definition at line 78 of file PndSttTrack.h.

References fTrackCandIndex.

Referenced by PndSttFitTracks::Exec().

{ fTrackCandIndex = trackCandID;  };

void PndSttTrack::SetZ ( Double_t  z )

inline

Definition at line 91 of file PndSttTrack.h.

References fZ, and z.

Referenced by PndSttHelixTrackFitter::ZFit(), and PndSttHelixTrackFitter::ZFitThroughOrigin().

{fZ = z;}

Member Data Documentation

Double_t PndSttTrack::fChi2Long

private

RMS deviation of hit coordinates to track

Definition at line 117 of file PndSttTrack.h.

Referenced by GetChi2Long(), and SetChi2Long().

Double_t PndSttTrack::fChi2Rad

private

// CHECK not for now, maybe in future if needed

Definition at line 119 of file PndSttTrack.h.

Referenced by GetChi2Rad(), and SetChi2Rad().

Double_t PndSttTrack::fDist

private

// CHECK not for now, maybe in future if needed

Track parameters of the helix

Definition at line 110 of file PndSttTrack.h.

Referenced by CalculateScosl(), GetDist(), MomentumAtPoint(), PCAToPoint(), Print(), SetDist(), and SetParameters().

Int_t PndSttTrack::fFlag

private

Quality flag

Definition at line 114 of file PndSttTrack.h.

Referenced by GetFlag(), Print(), and SetFlag().

Int_t PndSttTrack::fH

private

Definition at line 111 of file PndSttTrack.h.

Referenced by CalculateScosl(), GetCharge(), MomentumAtPoint(), and SetCharge().

TArrayI PndSttTrack::fHelixHits

private

Arrays containg the indices of the helixhits attached to the track

Definition at line 104 of file PndSttTrack.h.

Referenced by AddHelixHit(), GetHelixHitIndex(), and GetNofHelixHits().

Int_t PndSttTrack::fNDF

private

// CHECK not for now, maybe in future if needed

Definition at line 118 of file PndSttTrack.h.

Referenced by GetNDF(), and SetNDF().

Double_t PndSttTrack::fPhi

private

Definition at line 110 of file PndSttTrack.h.

Referenced by CalculateScosl(), GetPhi(), MomentumAtPoint(), PCAToPoint(), Print(), SetParameters(), and SetPhi().

Int_t PndSttTrack::fPidHypo

private

PID hypothesis used by the track fitter

Definition at line 107 of file PndSttTrack.h.

Referenced by GetPidHypo(), and SetPidHypo().

Double_t PndSttTrack::fRad

private

Definition at line 110 of file PndSttTrack.h.

Referenced by CalculateScosl(), GetRad(), MomentumAtPoint(), PCAToPoint(), Print(), SetParameters(), and SetRad().

Double_t PndSttTrack::fTanL

private

Definition at line 110 of file PndSttTrack.h.

Referenced by GetTanL(), MomentumAtPoint(), PCAToPoint(), Print(), SetParameters(), and SetTanL().

Int_t PndSttTrack::fTrackCandIndex

private

// CHECK not for now, maybe in future if needed

track cand

Definition at line 122 of file PndSttTrack.h.

Referenced by GetTrackCandIndex(), Print(), and SetTrackCandIndex().

Double_t PndSttTrack::fZ

private

Definition at line 110 of file PndSttTrack.h.

Referenced by GetZ(), PCAToPoint(), Print(), SetParameters(), and SetZ().

---

The documentation for this class was generated from the following files:

• PndSttTrack.h
• PndSttTrack.cxx