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