fix compilation
[u/mrichter/AliRoot.git] / ITS / AliITSVertexer.cxx
CommitLineData
308c2f7c 1#include "AliLog.h"
2#include "AliMultiplicity.h"
32e63e47 3#include "AliITSgeomTGeo.h"
f510fd70 4#include "AliITSDetTypeRec.h"
27167524 5#include "AliITSVertexer.h"
27167524 6#include "AliITSLoader.h"
27167524 7#include "AliITSMultReconstructor.h"
d325d83f 8#include "AliITSRecPointContainer.h"
a65111f1 9#include "AliRunLoader.h"
27167524 10
11const Float_t AliITSVertexer::fgkPipeRadius = 3.0;
c5f0f3c1 12
13ClassImp(AliITSVertexer)
14
15//////////////////////////////////////////////////////////////////////
16// Base class for primary vertex reconstruction //
d681bb2d 17// AliESDVertexer is a class for full 3D primary vertex finding //
0c1383c1 18// derived classes: AliITSvertexer3D, AliITSVertexerZ. //
3acc14d5 19// AliITSVertexerCosmics //
c5f0f3c1 20//////////////////////////////////////////////////////////////////////
21
8c42830a 22/* $Id$ */
23
c5f0f3c1 24//______________________________________________________________________
27167524 25AliITSVertexer::AliITSVertexer():AliVertexer(),
a65111f1 26fLadders(NULL),
308c2f7c 27fLadOnLay2(0),
1ff24d0a 28fComputeMultiplicity(kFALSE),
06a7cbee 29fDetTypeRec(NULL),
8c32ba44 30fMinTrackletsForPilup(0),
31fIsPileup(0),
32fNTrpuv(-2),
33fZpuv(-9999999.),
6b4d9537 34fNoVertices(0),
35fVertArray(NULL),
308c2f7c 36fFirstEvent(0),
06a7cbee 37fLastEvent(-1)
27167524 38{
308c2f7c 39 // Default Constructor
27167524 40 SetLaddersOnLayer2();
8c32ba44 41 SetMinTrackletsForPilup();
8c42830a 42 for(Int_t i=0; i<kNSPDMod;i++) fUseModule[i]=kTRUE;
c5f0f3c1 43}
44
45//______________________________________________________________________
27167524 46AliITSVertexer::~AliITSVertexer() {
47 // Destructor
f510fd70 48 delete [] fLadders;
49 delete []fVertArray;
27167524 50}
51
52//______________________________________________________________________
6b4d9537 53void AliITSVertexer::ResetVertex(){
54 // Resets vertex related data members
55 if(fNoVertices > 0){
56 if(fVertArray) delete []fVertArray;
57 fVertArray = NULL;
58 fNoVertices = 0;
59 }
60 fIsPileup=kFALSE;
61 fNTrpuv=-2;
62 fZpuv=-99999.;
63
64}
65//______________________________________________________________________
308c2f7c 66void AliITSVertexer::FindMultiplicity(TTree *itsClusterTree){
32e449be 67 // Invokes AliITSMultReconstructor to determine the
68 // charged multiplicity in the pixel layers
69 if(fMult){delete fMult; fMult = 0;}
6873ed43 70
32e449be 71 Bool_t success=kTRUE;
52b373f6 72 Bool_t cosmics=kFALSE;
32e449be 73 if(!fCurrentVertex)success=kFALSE;
74 if(fCurrentVertex && fCurrentVertex->GetNContributors()<1)success=kFALSE;
52b373f6 75 if(fCurrentVertex && strstr(fCurrentVertex->GetTitle(),"cosmics")) {
76 success=kFALSE;
77 cosmics=kTRUE;
78 }
9b373e9a 79
ff44c37c 80 // get the FastOr bit mask
81 TBits fastOrFiredMap = fDetTypeRec->GetFastOrFiredMap();
adc4b00f 82 TBits firedChipMap = fDetTypeRec->GetFiredChipMap(itsClusterTree);
83
9b373e9a 84 AliITSMultReconstructor multReco;
85
32e449be 86 if(!success){
52b373f6 87 if(!cosmics) {
3b1d8321 88 AliDebug(1,"Tracklets multiplicity not determined because the primary vertex was not found");
89 AliDebug(1,"Just counting the number of cluster-fired chips on the SPD layers");
52b373f6 90 }
9b373e9a 91 if (!itsClusterTree) {
92 AliError(" Invalid ITS cluster tree !\n");
93 return;
94 }
95 multReco.LoadClusterFiredChips(itsClusterTree);
96 Short_t nfcL1 = multReco.GetNFiredChips(0);
97 Short_t nfcL2 = multReco.GetNFiredChips(1);
d7c5c1e4 98 fMult = new AliMultiplicity(0,0,0,0,0,0,0,0,0,0,0,nfcL1,nfcL2,fastOrFiredMap);
adc4b00f 99 fMult->SetFiredChipMap(firedChipMap);
d325d83f 100 AliITSRecPointContainer* rcont = AliITSRecPointContainer::Instance();
101 fMult->SetITSClusters(0,rcont->GetNClustersInLayer(1,itsClusterTree));
102 for(Int_t kk=2;kk<=6;kk++){
103 fMult->SetITSClusters(kk-1,rcont->GetNClustersInLayerFast(kk));
104 }
32e449be 105 return;
106 }
308c2f7c 107
32e449be 108 if (!itsClusterTree) {
308c2f7c 109 AliError(" Invalid ITS cluster tree !\n");
32e449be 110 return;
111 }
112 Double_t vtx[3];
113 fCurrentVertex->GetXYZ(vtx);
114 Float_t vtxf[3];
115 for(Int_t i=0;i<3;i++)vtxf[i]=vtx[i];
9b373e9a 116 multReco.SetHistOn(kFALSE);
117 multReco.Reconstruct(itsClusterTree,vtxf,vtxf);
118 Int_t notracks=multReco.GetNTracklets();
968e8539 119 Float_t *tht = new Float_t [notracks];
32e449be 120 Float_t *phi = new Float_t [notracks];
fa9ed8e9 121 Float_t *dtht = new Float_t [notracks];
32e449be 122 Float_t *dphi = new Float_t [notracks];
de4c520e 123 Int_t *labels = new Int_t[notracks];
0939e22a 124 Int_t *labelsL2 = new Int_t[notracks];
9b373e9a 125 for(Int_t i=0;i<multReco.GetNTracklets();i++){
126 tht[i] = multReco.GetTracklet(i)[0];
127 phi[i] = multReco.GetTracklet(i)[1];
fa9ed8e9 128 dtht[i] = multReco.GetTracklet(i)[3];
9b373e9a 129 dphi[i] = multReco.GetTracklet(i)[2];
fa9ed8e9 130 labels[i] = static_cast<Int_t>(multReco.GetTracklet(i)[4]);
131 labelsL2[i] = static_cast<Int_t>(multReco.GetTracklet(i)[5]);
32e449be 132 }
9b373e9a 133 Int_t nosingleclus=multReco.GetNSingleClusters();
968e8539 134 Float_t *ths = new Float_t [nosingleclus];
135 Float_t *phs = new Float_t [nosingleclus];
d7c5c1e4 136 Int_t *labelss = new Int_t [nosingleclus];
968e8539 137 for(Int_t i=0;i<nosingleclus;i++){
9b373e9a 138 ths[i] = multReco.GetCluster(i)[0];
139 phs[i] = multReco.GetCluster(i)[1];
b7bd9ab6 140 labelss[i] = (Int_t)multReco.GetCluster(i)[2];
968e8539 141 }
9b373e9a 142 Short_t nfcL1 = multReco.GetNFiredChips(0);
143 Short_t nfcL2 = multReco.GetNFiredChips(1);
d7c5c1e4 144 fMult = new AliMultiplicity(notracks,tht,phi,dtht,dphi,labels,labelsL2,nosingleclus,ths,phs,labelss,nfcL1,nfcL2,fastOrFiredMap);
adc4b00f 145 fMult->SetFiredChipMap(firedChipMap);
d325d83f 146 AliITSRecPointContainer* rcont = AliITSRecPointContainer::Instance();
147 fMult->SetITSClusters(0,rcont->GetNClustersInLayer(1,itsClusterTree));
148 for(Int_t kk=2;kk<=6;kk++){
149 fMult->SetITSClusters(kk-1,rcont->GetNClustersInLayerFast(kk));
150 }
968e8539 151 delete [] tht;
32e449be 152 delete [] phi;
fa9ed8e9 153 delete [] dtht;
32e449be 154 delete [] dphi;
968e8539 155 delete [] ths;
156 delete [] phs;
d6fc37c1 157 delete [] labels;
0939e22a 158 delete [] labelsL2;
d7c5c1e4 159 delete [] labelss;
308c2f7c 160
32e449be 161 return;
162}
c5f0f3c1 163
164//______________________________________________________________________
27167524 165void AliITSVertexer::SetLaddersOnLayer2(Int_t ladwid){
166 // Calculates the array of ladders on layer 2 to be used with a
167 // given ladder on layer 1
a65111f1 168 if(ladwid == fLadOnLay2 && fLadders)return;
27167524 169 fLadOnLay2=ladwid;
32e63e47 170 Int_t ladtot1=AliITSgeomTGeo::GetNLadders(1);
27167524 171 if(fLadders) delete [] fLadders;
172 fLadders=new UShort_t[ladtot1];
173
174
175 Double_t pos1[3],pos2[3];
32e63e47 176 Int_t mod1=AliITSgeomTGeo::GetModuleIndex(2,1,1);
177 AliITSgeomTGeo::GetTranslation(mod1,pos1); // position of the module in the MRS
27167524 178 Double_t phi0=TMath::ATan2(pos1[1],pos1[0]);
179 if(phi0<0) phi0+=2*TMath::Pi();
32e63e47 180 Int_t mod2=AliITSgeomTGeo::GetModuleIndex(2,2,1);
181 AliITSgeomTGeo::GetTranslation(mod2,pos2);
27167524 182 Double_t phi2=TMath::ATan2(pos2[1],pos2[0]);
183 if(phi2<0) phi2+=2*TMath::Pi();
184 Double_t deltaPhi= phi0-phi2; // phi width of a layer2 module
185
186 for(Int_t i= 0; i<ladtot1;i++){
32e63e47 187 Int_t modlad= AliITSgeomTGeo::GetModuleIndex(1,i+1,1);
27167524 188 Double_t posmod[3];
32e63e47 189 AliITSgeomTGeo::GetTranslation(modlad,posmod);
27167524 190 Double_t phimod=TMath::ATan2(posmod[1],posmod[0]);
191 if(phimod<0) phimod+=2*TMath::Pi();
192 Double_t phi1= phimod+deltaPhi*double(fLadOnLay2);
193 if(phi1<0) phi1+=2*TMath::Pi();
194 if(phi1>2*TMath::Pi()) phi1-=2*TMath::Pi();
195 Double_t philad1=phi0-phi1;
196 UShort_t lad1;
197 Double_t ladder1=(philad1)/(deltaPhi) +1.;
198 if(ladder1<1){ladder1=40+ladder1;}
199 lad1=int(ladder1+0.5);
200 fLadders[i]=lad1;
201 }
202}
203
308c2f7c 204
205//______________________________________________________________________
206void AliITSVertexer::Init(TString filename){
207 // Initialize the vertexer in case of
208 // analysis of an entire file
33c3c91a 209 AliRunLoader *rl = AliRunLoader::Instance();
308c2f7c 210 if(!rl){
3457dd2d 211 AliFatal("Run Loader not found");
212 return;
308c2f7c 213 }
214 if (fLastEvent < 0) SetLastEvent(rl->GetNumberOfEvents()-1);
215
216 AliITSLoader* itsloader = (AliITSLoader*) rl->GetLoader("ITSLoader");
217 if(!filename.Contains("default"))itsloader->SetVerticesFileName(filename);
218 if(!filename.Contains("null"))itsloader->LoadVertices("recreate");
219}
27167524 220
221//______________________________________________________________________
c5f0f3c1 222void AliITSVertexer::WriteCurrentVertex(){
223 // Write the current AliVertex object to file fOutFile
33c3c91a 224 AliRunLoader *rl = AliRunLoader::Instance();
41b19549 225 AliITSLoader* itsLoader = (AliITSLoader*) rl->GetLoader("ITSLoader");
88cb7938 226 fCurrentVertex->SetName("Vertex");
227 // const char * name = fCurrentVertex->GetName();
41b19549 228 // itsLoader->SetVerticesContName(name);
229 Int_t rc = itsLoader->PostVertex(fCurrentVertex);
230 rc = itsLoader->WriteVertices();
c5f0f3c1 231}
de4c520e 232
308c2f7c 233//______________________________________________________________________
234void AliITSVertexer::FindVertices(){
235 // computes the vertices of the events in the range FirstEvent - LastEvent
236
33c3c91a 237 AliRunLoader *rl = AliRunLoader::Instance();
308c2f7c 238 AliITSLoader* itsloader = (AliITSLoader*) rl->GetLoader("ITSLoader");
239 itsloader->LoadRecPoints("read");
240 for(Int_t i=fFirstEvent;i<=fLastEvent;i++){
241 rl->GetEvent(i);
242 TTree* cltree = itsloader->TreeR();
243 FindVertexForCurrentEvent(cltree);
244 if(fCurrentVertex){
245 WriteCurrentVertex();
246 }
247 else {
248 AliDebug(1,Form("Vertex not found for event %d",i));
249 }
250 }
251}