1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
18 //-------------------------------------------------------------------------
19 // Implementation of the AliTracker class
20 // that is the base for AliTPCtracker, AliITStrackerV2 and AliTRDtracker
21 // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
22 //-------------------------------------------------------------------------
26 #include <TGeoMatrix.h>
28 #include "AliTracker.h"
29 #include "AliGeomManager.h"
30 #include "AliCluster.h"
31 #include "AliKalmanTrack.h"
32 #include "AliGlobalQADataMaker.h"
34 Bool_t AliTracker::fFillResiduals=kFALSE;
35 TObjArray **AliTracker::fResiduals=NULL;
36 AliRecoParam::EventSpecie_t AliTracker::fEventSpecie=AliRecoParam::kDefault;
40 AliTracker::AliTracker():
44 //--------------------------------------------------------------------
45 // The default constructor.
46 //--------------------------------------------------------------------
49 //__________________________________________________________________________
50 AliTracker::AliTracker(const AliTracker &atr):
52 fEventInfo(atr.fEventInfo)
54 //--------------------------------------------------------------------
55 // The default constructor.
56 //--------------------------------------------------------------------
59 //__________________________________________________________________________
60 void AliTracker::FillClusterArray(TObjArray* /*array*/) const
62 // Publishes all pointers to clusters known to the tracker into the
63 // passed object array.
64 // The ownership is not transfered - the caller is not expected to delete
67 AliWarning("should be overriden by a sub-class.");
70 //__________________________________________________________________________
71 void AliTracker::CookLabel(AliKalmanTrack *t, Float_t wrong) const {
72 //--------------------------------------------------------------------
73 //This function "cooks" a track label. If label<0, this track is fake.
74 //--------------------------------------------------------------------
75 Int_t noc=t->GetNumberOfClusters();
77 Int_t *lb=new Int_t[noc];
78 Int_t *mx=new Int_t[noc];
79 AliCluster **clusters=new AliCluster*[noc];
82 for (i=0; i<noc; i++) {
84 Int_t index=t->GetClusterIndex(i);
85 clusters[i]=GetCluster(index);
89 for (i=0; i<noc; i++) {
90 AliCluster *c=clusters[i];
91 lab=TMath::Abs(c->GetLabel(0));
93 for (j=0; j<noc; j++) if (lb[j]==lab || mx[j]==0) break;
101 for (i=0; i<noc; i++) if (mx[i]>max) {max=mx[i]; lab=lb[i];}
103 for (i=0; i<noc; i++) {
104 AliCluster *c=clusters[i];
105 //if (TMath::Abs(c->GetLabel(1)) == lab ||
106 // TMath::Abs(c->GetLabel(2)) == lab ) max++;
107 if (TMath::Abs(c->GetLabel(0)!=lab))
108 if (TMath::Abs(c->GetLabel(1)) == lab ||
109 TMath::Abs(c->GetLabel(2)) == lab ) max++;
112 if ((1.- Float_t(max)/noc) > wrong) lab=-lab;
113 t->SetFakeRatio((1.- Float_t(max)/noc));
121 //____________________________________________________________________________
122 void AliTracker::UseClusters(const AliKalmanTrack *t, Int_t from) const {
123 //------------------------------------------------------------------
124 //This function marks clusters associated with the track.
125 //------------------------------------------------------------------
126 Int_t noc=t->GetNumberOfClusters();
127 for (Int_t i=from; i<noc; i++) {
128 Int_t index=t->GetClusterIndex(i);
129 AliCluster *c=GetCluster(index);
134 void AliTracker::FillResiduals(const AliExternalTrackParam *t,
135 Double_t *p, Double_t *cov,
136 UShort_t id, Bool_t updated) {
138 // This function fills the histograms of residuals
139 // The array of these histos is external for this AliTracker class.
140 // Normally, this array belong to AliGlobalQADataMaker class.
142 if (!fFillResiduals) return;
143 if (!fResiduals) return;
145 const Double_t *residuals=t->GetResiduals(p,cov,updated);
146 if (!residuals) return;
149 Int_t esIndex = AliRecoParam::AConvert(fEventSpecie) ;
150 AliGeomManager::ELayerID layer=AliGeomManager::VolUIDToLayer(id);
151 h=(TH1F*)fResiduals[esIndex]->At(2*layer-2);
152 if (h) h->Fill(residuals[0]);
153 h=(TH1F*)fResiduals[esIndex]->At(2*layer-1);
154 if (h) h->Fill(residuals[1]);
157 if (p[1]<0) { // SSD1 absolute residuals
158 h = (TH1F*)fResiduals[esIndex]->At(40);
159 if (h) h->Fill(t->GetY()-p[0]); //C side
160 h = (TH1F*)fResiduals[esIndex]->At(41);
161 if (h) h->Fill(t->GetZ()-p[1]);
163 h = (TH1F*)fResiduals[esIndex]->At(42);
164 if (h) h->Fill(t->GetY()-p[0]); //A side
165 h = (TH1F*)fResiduals[esIndex]->At(43);
166 if (h) h->Fill(t->GetZ()-p[1]);
169 if (layer==6) { // SSD2 absolute residuals
171 h = (TH1F*)fResiduals[esIndex]->At(44);
172 if (h) h->Fill(t->GetY()-p[0]); //C side
173 h = (TH1F*)fResiduals[esIndex]->At(45);
174 if (h) h->Fill(t->GetZ()-p[1]);
176 h = (TH1F*)fResiduals[esIndex]->At(46);
177 if (h) h->Fill(t->GetY()-p[0]); //A side
178 h = (TH1F*)fResiduals[esIndex]->At(47);
179 if (h) h->Fill(t->GetZ()-p[1]);
185 void AliTracker::FillResiduals(const AliExternalTrackParam *t,
186 const AliCluster *c, Bool_t /*updated*/) {
188 // This function fills the histograms of residuals
189 // The array of these histos is external for this AliTracker class.
190 // Normally, this array belong to AliGlobalQADataMaker class.
192 // For the moment, the residuals are absolute !
195 if (!fFillResiduals) return;
196 if (!fResiduals) return;
198 UShort_t id=c->GetVolumeId();
199 const TGeoHMatrix *matrixT2L=AliGeomManager::GetTracking2LocalMatrix(id);
201 // Position of the cluster in the tracking c.s.
202 Double_t clsTrk[3]={c->GetX(), c->GetY(), c->GetZ()};
203 // Position of the cluster in the local module c.s.
204 Double_t clsLoc[3]={0.,0.,0.};
205 matrixT2L->LocalToMaster(clsTrk,clsLoc);
208 // Position of the intersection point in the tracking c.s.
209 Double_t trkTrk[3]={t->GetX(),t->GetY(),t->GetZ()};
210 // Position of the intersection point in the local module c.s.
211 Double_t trkLoc[3]={0.,0.,0.};
212 matrixT2L->LocalToMaster(trkTrk,trkLoc);
214 Double_t residuals[2]={trkLoc[0]-clsLoc[0], trkLoc[2]-clsLoc[2]};
217 Int_t esIndex = AliRecoParam::AConvert(fEventSpecie) ;
218 AliGeomManager::ELayerID layer=AliGeomManager::VolUIDToLayer(id);
219 h=(TH1F*)fResiduals[esIndex]->At(2*layer-2);
220 if (h) h->Fill(residuals[0]);
221 h=(TH1F*)fResiduals[esIndex]->At(2*layer-1);
222 if (h) h->Fill(residuals[1]);