* provided "as is" without express or implied warranty. *
**************************************************************************/
+/* $Id$ */
+
///////////////////////////////////////////////////////////////////////////
// Implementation of the ITS track class
//
#include <TMath.h>
#include "AliCluster.h"
-#include "AliTracker.h"
#include "AliESDtrack.h"
+#include "AliESDVertex.h"
+#include "AliITSReconstructor.h"
#include "AliITStrackV2.h"
+#include "AliTracker.h"
const Int_t AliITStrackV2::fgkWARN = 5;
fdEdx(0),
fESDtrack(0)
{
- for(Int_t i=0; i<2*AliITSgeomTGeo::kNLayers; i++) fIndex[i]=-1;
- for(Int_t i=0; i<4; i++) fdEdxSample[i]=0;
+ for(Int_t i=0; i<2*AliITSgeomTGeo::kNLayers; i++) {fIndex[i]=-1; fModule[i]=-1;}
+ for(Int_t i=0; i<4; i++) fdEdxSample[i]=0;
}
for(Int_t i=0; i<4; i++) fdEdxSample[i]=0;
}
+//____________________________________________________________________________
+void AliITStrackV2::ResetClusters() {
+ //------------------------------------------------------------------
+ // Reset the array of attached clusters.
+ //------------------------------------------------------------------
+ for (Int_t i=0; i<2*AliITSgeomTGeo::kNLayers; i++) fIndex[i]=-1;
+ SetChi2(0.);
+ SetNumberOfClusters(0);
+}
+
void AliITStrackV2::UpdateESDtrack(ULong_t flags) const {
fESDtrack->UpdateTrackParams(this,flags);
+ // copy the module indices
+ for(Int_t i=0;i<12;i++) {
+ // printf(" %d\n",GetModuleIndex(i));
+ fESDtrack->SetITSModuleIndex(i,GetModuleIndex(i));
+ }
}
//____________________________________________________________________________
//------------------------------------------------------------------
Int_t i;
for (i=0; i<4; i++) fdEdxSample[i]=t.fdEdxSample[i];
- for (i=0; i<2*AliITSgeomTGeo::GetNLayers(); i++) fIndex[i]=t.fIndex[i];
+ for (i=0; i<2*AliITSgeomTGeo::GetNLayers(); i++) {
+ fIndex[i]=t.fIndex[i];
+ fModule[i]=t.fModule[i];
+ }
}
//_____________________________________________________________________________
//This function returns a track position in the global system
//------------------------------------------------------------------
Double_t r[3];
- Bool_t rc=GetXYZAt(xloc, AliTracker::GetBz(), r);
+ Bool_t rc=GetXYZAt(xloc, GetBz(), r);
x=r[0]; y=r[1]; z=r[2];
return rc;
}
}
//____________________________________________________________________________
-Bool_t AliITStrackV2::PropagateToTGeo(Double_t xToGo, Int_t nstep, Double_t &xOverX0, Double_t &xTimesRho) {
+Bool_t AliITStrackV2::PropagateToTGeo(Double_t xToGo, Int_t nstep, Double_t &xOverX0, Double_t &xTimesRho, Bool_t addTime) {
//-------------------------------------------------------------------
// Propagates the track to a reference plane x=xToGo in n steps.
// These n steps are only used to take into account the curvature.
}
}
- if (IsStartedTimeIntegral() && GetX()>startx) {
+ if (addTime && IsStartedTimeIntegral() && GetX()>startx) {
Double_t l2 = ( (GetX()-startx)*(GetX()-startx) +
(GetY()-starty)*(GetY()-starty) +
(GetZ()-startz)*(GetZ()-startz) );
if (!AliExternalTrackParam::Update(p,cov)) return kFALSE;
+ Int_t n=GetNumberOfClusters();
if (!Invariant()) {
- AliWarning("Wrong invariant !");
+ if (n>fgkWARN) AliWarning("Wrong invariant !");
return kFALSE;
}
if (chi2<0) return kTRUE;
- Int_t n=GetNumberOfClusters();
+ // fill residuals for ITS+TPC tracks
+ if (fESDtrack->GetStatus()&AliESDtrack::kTPCin) {
+ AliTracker::FillResiduals(this,p,cov,c->GetVolumeId());
+ }
+
fIndex[n]=index;
SetNumberOfClusters(n+1);
SetChi2(GetChi2()+chi2);
//------------------------------------------------------------------
Int_t n=GetNumberOfClusters();
+ // take into account the misalignment error
+ Float_t maxMisalErrY2=0,maxMisalErrZ2=0;
+ for (Int_t lay=0; lay<AliITSgeomTGeo::kNLayers; lay++) {
+ maxMisalErrY2 = TMath::Max(maxMisalErrY2,AliITSReconstructor::GetRecoParam()->GetClusterMisalErrorY(lay));
+ maxMisalErrZ2 = TMath::Max(maxMisalErrZ2,AliITSReconstructor::GetRecoParam()->GetClusterMisalErrorZ(lay));
+ }
+ maxMisalErrY2 *= maxMisalErrY2;
+ maxMisalErrZ2 *= maxMisalErrZ2;
+ // this is because when we reset before refitting, we multiply the
+ // matrix by 10
+ maxMisalErrY2 *= 10.;
+ maxMisalErrZ2 *= 10.;
+
Double_t sP2=GetParameter()[2];
if (TMath::Abs(sP2) >= kAlmost1){
if (n>fgkWARN) Warning("Invariant","fP2=%f\n",sP2);
return kFALSE;
}
Double_t sC00=GetCovariance()[0];
- if (sC00<=0 || sC00>9.) {
+ if (sC00<=0 || sC00>(9.+maxMisalErrY2)) {
if (n>fgkWARN) Warning("Invariant","fC00=%f\n",sC00);
return kFALSE;
}
Double_t sC11=GetCovariance()[2];
- if (sC11<=0 || sC11>9.) {
+ if (sC11<=0 || sC11>(9.+maxMisalErrZ2)) {
if (n>fgkWARN) Warning("Invariant","fC11=%f\n",sC11);
return kFALSE;
}
if (!AliExternalTrackParam::Propagate(alp,xk,bz)) return kFALSE;
if (!Invariant()) {
- AliWarning("Wrong invariant !");
- return kFALSE;
+ Int_t n=GetNumberOfClusters();
+ if (n>fgkWARN) AliWarning("Wrong invariant !");
+ return kFALSE;
}
return kTRUE;
SetdEdx(dedx);
}
-Double_t AliITStrackV2::GetBz() const {
- //
- // returns Bz component of the magnetic field (kG)
- //
- if (AliTracker::UniformField()) return AliTracker::GetBz();
- Double_t r[3]; GetXYZ(r);
- return AliTracker::GetBz(r);
-}
-
//____________________________________________________________________________
Bool_t AliITStrackV2::
GetPhiZat(Double_t r, Double_t &phi, Double_t &z) const {
Double_t phicurr=GetAlpha()+TMath::ASin(GetSnp());
phi=phicurr+TMath::ASin(d/r)-TMath::ASin(d/rcurr);
- z=GetZ()+GetTgl()*(TMath::Sqrt(r*r-d*d) - TMath::Sqrt(rcurr*rcurr-d*d));
-
+ z=GetZ()+GetTgl()*(TMath::Sqrt((r-d)*(r+d))-TMath::Sqrt((rcurr-d)*(rcurr+d)));
return kTRUE;
}
//____________________________________________________________________________
return kTRUE;
}
-