fQ=q;
}
///////////////////////////////////////////////////////////////////////////
-void AliTrack::Data(TString f)
+void AliTrack::Data(TString f,TString u)
{
// Provide track information within the coordinate frame f
+//
+// The string argument "u" allows to choose between different angular units
+// in case e.g. a spherical frame is selected.
+// u = "rad" : angles provided in radians
+// "deg" : angles provided in degrees
+//
+// The defaults are f="car" and u="rad".
+
Double_t m=GetMass();
Double_t dm=GetResultError();
const char* name=GetName();
cout << " Fit details present in object of class " << fFit->ClassName() << endl;
if (fFit->InheritsFrom("AliSignal")) ((AliSignal*)fFit)->List(-1);
}
- Ali4Vector::Data(f);
+ Ali4Vector::Data(f,u);
}
///////////////////////////////////////////////////////////////////////////
-void AliTrack::List(TString f)
+void AliTrack::List(TString f,TString u)
{
// Provide current track and decay level 1 information within coordinate frame f
+//
+// The string argument "u" allows to choose between different angular units
+// in case e.g. a spherical frame is selected.
+// u = "rad" : angles provided in radians
+// "deg" : angles provided in degrees
+//
+// The defaults are f="car" and u="rad".
- Data(f); // Information of the current track
+ Data(f,u); // Information of the current track
+ if (fBegin) { cout << " Begin-point :"; fBegin->Data(f,u); }
+ if (fEnd) { cout << " End-point :"; fEnd->Data(f,u); }
+ if (fRef) { cout << " Ref-point :"; fRef->Data(f,u); }
// Decay products of this track
AliTrack* td;
if (td)
{
cout << " ---Level 1 sec. track no. " << id << endl;
- td->Data(f);
+ td->Data(f,u);
}
else
{
}
}
///////////////////////////////////////////////////////////////////////////
-void AliTrack::ListAll(TString f)
+void AliTrack::ListAll(TString f,TString u)
{
// Provide complete track and decay information within the coordinate frame f
+//
+// The string argument "u" allows to choose between different angular units
+// in case e.g. a spherical frame is selected.
+// u = "rad" : angles provided in radians
+// "deg" : angles provided in degrees
+//
+// The defaults are f="car" and u="rad".
- Data(f); // Information of the current track
- if (fBegin) { cout << " Begin-point :"; fBegin->Data(f); }
- if (fEnd) { cout << " End-point :"; fEnd->Data(f); }
- if (fRef) { cout << " Ref-point :"; fRef->Data(f); }
+ Data(f,u); // Information of the current track
+ if (fBegin) { cout << " Begin-point :"; fBegin->Data(f,u); }
+ if (fEnd) { cout << " End-point :"; fEnd->Data(f,u); }
+ if (fRef) { cout << " Ref-point :"; fRef->Data(f,u); }
Int_t nhyp=GetNhypotheses();
if (nhyp)
for (Int_t ih=1; ih<=nhyp; ih++)
{
AliTrack* tx=GetTrackHypothesis(ih);
- if (tx) tx->Data(f);
+ if (tx) tx->Data(f,u);
}
}
}
r=sx->GetPosition();
cout << " Position";
- r.Data(f);
+ r.Data(f,u);
}
}
}
AliTrack* t=this;
- Dumps(t,1,f); // Information of all decay products
+ Dumps(t,1,f,u); // Information of all decay products
}
//////////////////////////////////////////////////////////////////////////
-void AliTrack::Dumps(AliTrack* t,Int_t n,TString f)
+void AliTrack::Dumps(AliTrack* t,Int_t n,TString f,TString u)
{
// Recursively provide the info of all decay levels of this track
AliTrack* td;
if (td)
{
cout << " ---Level " << n << " sec. track no. " << id << endl;
- td->Data(f);
+ td->Data(f,u);
Int_t nhyp=td->GetNhypotheses();
if (nhyp)
for (Int_t ih=1; ih<=nhyp; ih++)
{
AliTrack* tx=td->GetTrackHypothesis(ih);
- if (tx) tx->Data(f);
+ if (tx) tx->Data(f,u);
}
}
for (Int_t is=1; is<=nsig; is++)
{
AliSignal* sx=td->GetSignal(is);
- if (sx) sx->Data(f);
+ if (sx) sx->Data(f,u);
}
}
// Go for next decay level of this decay track recursively
- Dumps(td,n+1,f);
+ Dumps(td,n+1,f,u);
}
else
{
}
}
///////////////////////////////////////////////////////////////////////////
+Double_t AliTrack::GetDistance(AliPosition* p)
+{
+// Provide distance of the current track to the position p.
+// The error on the result can be obtained as usual by invoking
+// GetResultError() afterwards.
+//
+// The distance will be provided in the unit scale of the AliPosition p.
+// As such it is possible to obtain a correctly computed distance even in case
+// the track parameters have a different unit scale.
+// However, it is recommended to work always with one single unit scale.
+//
+// Note : In case of incomplete information, a distance value of -1 is
+// returned.
+
+ Double_t dist=-1.;
+ fDresult=0.;
+
+ if (!p) return dist;
+
+ // Obtain a defined position on this track
+ AliPosition* rx=fRef;
+ if (!rx) rx=fBegin;
+ if (!rx) rx=fEnd;
+
+ if (!rx) return dist;
+
+ Ali3Vector p1=Get3Momentum();
+
+ if (p1.GetNorm() <= 0.) return dist;
+
+ Ali3Vector r0=(Ali3Vector)(*rx);
+
+ Float_t tscale=rx->GetUnitScale();
+ Float_t pscale=p->GetUnitScale();
+ if ((tscale/pscale > 1.1) || (pscale/tscale > 1.1)) r0=r0*(tscale/pscale);
+
+ // Obtain the direction unit vector of this track
+ Double_t vec[3];
+ Double_t err[3];
+ p1.GetVector(vec,"sph");
+ p1.GetErrors(err,"sph");
+ vec[0]=1.;
+ err[0]=0.;
+ p1.SetVector(vec,"sph");
+ p1.SetErrors(err,"sph");
+
+ Ali3Vector q=(Ali3Vector)(*p);
+ Ali3Vector r=q-r0;
+ Ali3Vector d=r.Cross(p1);
+ dist=d.GetNorm();
+ fDresult=d.GetResultError();
+ return dist;
+}
+///////////////////////////////////////////////////////////////////////////
+Double_t AliTrack::GetDistance(AliTrack* t)
+{
+// Provide distance of the current track to the track t.
+// The error on the result can be obtained as usual by invoking
+// GetResultError() afterwards.
+//
+// The distance will be provided in the unit scale of the current track.
+// As such it is possible to obtain a correctly computed distance even in case
+// the track parameters have a different unit scale.
+// This implies that in such cases the results of t1.GetDistance(t2) and
+// t2.GetDistance(t1) will be numerically different.
+// However, it is recommended to work always with one single unit scale.
+//
+// Note : In case of incomplete information, a distance value of -1 is
+// returned.
+
+ Double_t dist=-1.;
+ fDresult=0.;
+
+ if (!t) return dist;
+
+ // Obtain a defined position on this track
+ AliPosition* rx=fRef;
+ if (!rx) rx=fBegin;
+ if (!rx) rx=fEnd;
+
+ if (!rx) return dist;
+
+ // Obtain a defined position on track t
+ AliPosition* ry=t->GetReferencePoint();
+ if (!ry) ry=t->GetBeginPoint();
+ if (!ry) ry=t->GetEndPoint();
+
+ if (!ry) return dist;
+
+ Ali3Vector p1=Get3Momentum();
+ Ali3Vector p2=t->Get3Momentum();
+
+ if (p1.GetNorm() <= 0. || p2.GetNorm() <= 0.) return dist;
+
+ // The vector normal to both track directions
+ Ali3Vector n=p1.Cross(p2);
+
+ if (n.GetNorm() > 1.e-10)
+ {
+ // Normalise n to a unit vector
+ Double_t vec[3];
+ Double_t err[3];
+ n.GetVector(vec,"sph");
+ n.GetErrors(err,"sph");
+ vec[0]=1.;
+ err[0]=0.;
+ n.SetVector(vec,"sph");
+ n.SetErrors(err,"sph");
+ Ali3Vector r1=(Ali3Vector)(*rx);
+ Ali3Vector r2=(Ali3Vector)(*ry);
+ // Correct components of r2 in case of different unit scales
+ Float_t scale=rx->GetUnitScale();
+ Float_t tscale=ry->GetUnitScale();
+ if ((tscale/scale > 1.1) || (scale/tscale > 1.1)) r2=r2*(tscale/scale);
+ Ali3Vector r=r1-r2;
+ dist=fabs(r.Dot(n));
+ fDresult=r.GetResultError();
+ }
+ else // Parallel tracks
+ {
+ dist=t->GetDistance(rx);
+ fDresult=t->GetResultError();
+ }
+ return dist;
+}
+///////////////////////////////////////////////////////////////////////////
TObject* AliTrack::Clone(const char* name) const
{
// Make a deep copy of the current object and provide the pointer to the copy.
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff