-#include <AliITSVertex.h>
-#include <AliITSVertexer.h>
+#include <AliESDVertex.h>
+#include "AliITSgeomTGeo.h"
+#include "AliITSVertexer.h"
+#include "AliRunLoader.h"
+#include "AliITSLoader.h"
+#include "AliMultiplicity.h"
+#include "AliITSMultReconstructor.h"
+
+const Float_t AliITSVertexer::fgkPipeRadius = 3.0;
ClassImp(AliITSVertexer)
//////////////////////////////////////////////////////////////////////
// Base class for primary vertex reconstruction //
-// AliITSVertex is a class for full 3D primary vertex finding //
+// AliESDVertexer is a class for full 3D primary vertex finding //
+// derived classes: AliITSVertexerIons AliITSvertexer3D //
+// AliITSVertexerCosmics //
//////////////////////////////////////////////////////////////////////
//______________________________________________________________________
-AliITSVertexer::AliITSVertexer() {
+AliITSVertexer::AliITSVertexer():AliVertexer(),
+fLadders(),
+fLadOnLay2(0) {
// Default Constructor
-
- fCurrentVertex = 0;
- fInFile = 0;
- fOutFile = 0;
- SetDebug();
- SetFirstEvent(0);
- SetLastEvent(0);
+ SetLaddersOnLayer2();
}
-AliITSVertexer::AliITSVertexer(TFile *infile, TFile *outfile) {
+AliITSVertexer::AliITSVertexer(TString filename):AliVertexer(),
+fLadders(),
+fLadOnLay2(0)
+{
// Standard constructor
+ AliRunLoader *rl = AliRunLoader::GetRunLoader();
+ if(!rl){
+ Fatal("AliITSVertexer","Run Loader not found");
+ }
+ /*
+ if(rl->LoadgAlice()){
+ Fatal("AliITSVertexer","The AliRun object is not available - nothing done");
+ }
+ */
fCurrentVertex = 0;
- SetInputFile(infile);
- SetOutputFile(outfile);
- SetDebug();
SetFirstEvent(0);
SetLastEvent(0);
- if(gAlice){
- Int_t lst;
- if(gAlice->TreeE()){
- lst = static_cast<Int_t>(gAlice->TreeE()->GetEntries());
- SetLastEvent(lst-1);
- }
+ // rl->LoadHeader();
+ AliITSLoader* itsLoader = (AliITSLoader*) rl->GetLoader("ITSLoader");
+ if(!filename.Contains("default"))itsLoader->SetVerticesFileName(filename);
+ if(!filename.Contains("null"))itsLoader->LoadVertices("recreate");
+
+ // Int_t lst;
+ SetLastEvent(rl->GetNumberOfEvents()-1);
+ /*
+ if(rl->TreeE()){
+ lst = static_cast<Int_t>(rl->TreeE()->GetEntries());
+ SetLastEvent(lst-1);
}
+ */
+ SetLaddersOnLayer2();
+}
+
+//______________________________________________________________________
+AliITSVertexer::AliITSVertexer(const AliITSVertexer &vtxr) : AliVertexer(vtxr),
+fLadders(),
+fLadOnLay2(0)
+{
+ // Copy constructor
+ // Copies are not allowed. The method is protected to avoid misuse.
+ Error("AliITSVertexer","Copy constructor not allowed\n");
+}
+
+//______________________________________________________________________
+AliITSVertexer& AliITSVertexer::operator=(const AliITSVertexer& /* vtxr */){
+ // Assignment operator
+ // Assignment is not allowed. The method is protected to avoid misuse.
+ Error("= operator","Assignment operator not allowed\n");
+ return *this;
}
//______________________________________________________________________
AliITSVertexer::~AliITSVertexer() {
- // Default Destructor
- // The objects poited by the following pointers are not owned
- // by this class and are not deleted
+ // Destructor
+ if(fLadders) delete [] fLadders;
+}
+
+//______________________________________________________________________
+void AliITSVertexer::FindMultiplicity(Int_t evnumber){
+ // Invokes AliITSMultReconstructor to determine the
+ // charged multiplicity in the pixel layers
+ if(fMult){delete fMult; fMult = 0;}
+ Bool_t success=kTRUE;
+ if(!fCurrentVertex)success=kFALSE;
+ if(fCurrentVertex && fCurrentVertex->GetNContributors()<1)success=kFALSE;
+ if(!success){
+ AliWarning("Tracklets multiplicity not determined because the primary vertex was not found");
+ return;
+ }
+ AliITSMultReconstructor* multReco = new AliITSMultReconstructor();
+ AliRunLoader *rl =AliRunLoader::GetRunLoader();
+ AliITSLoader* itsLoader = (AliITSLoader*)rl->GetLoader("ITSLoader");
+ itsLoader->LoadRecPoints();
+ rl->GetEvent(evnumber);
+ TTree* itsClusterTree = itsLoader->TreeR();
+ if (!itsClusterTree) {
+ AliError(" Can't get the ITS cluster tree !\n");
+ return;
+ }
+ Double_t vtx[3];
+ fCurrentVertex->GetXYZ(vtx);
+ Float_t vtxf[3];
+ for(Int_t i=0;i<3;i++)vtxf[i]=vtx[i];
+ multReco->SetHistOn(kFALSE);
+ multReco->Reconstruct(itsClusterTree,vtxf,vtxf);
+ Int_t notracks=multReco->GetNTracklets();
+ Float_t *tht = new Float_t [notracks];
+ Float_t *phi = new Float_t [notracks];
+ Float_t *dphi = new Float_t [notracks];
+ Int_t *labels = new Int_t[notracks];
+ for(Int_t i=0;i<multReco->GetNTracklets();i++){
+ tht[i] = multReco->GetTracklet(i)[0];
+ phi[i] = multReco->GetTracklet(i)[1];
+ dphi[i] = multReco->GetTracklet(i)[2];
+ labels[i] = static_cast<Int_t>(multReco->GetTracklet(i)[3]);
+ }
+ Int_t nosingleclus=multReco->GetNSingleClusters();
+ Float_t *ths = new Float_t [nosingleclus];
+ Float_t *phs = new Float_t [nosingleclus];
+ for(Int_t i=0;i<nosingleclus;i++){
+ ths[i] = multReco->GetCluster(i)[0];
+ phs[i] = multReco->GetCluster(i)[1];
+ }
+ fMult = new AliMultiplicity(notracks,tht,phi,dphi,labels,nosingleclus,ths,phs);
+ delete [] tht;
+ delete [] phi;
+ delete [] dphi;
+ delete [] ths;
+ delete [] phs;
+ delete [] labels;
+ itsLoader->UnloadRecPoints();
+ delete multReco;
+ return;
+}
+
+//______________________________________________________________________
+void AliITSVertexer::SetLaddersOnLayer2(Int_t ladwid){
+ // Calculates the array of ladders on layer 2 to be used with a
+ // given ladder on layer 1
+ fLadOnLay2=ladwid;
+ // AliRunLoader *rl =AliRunLoader::GetRunLoader();
+ // AliITSLoader* itsLoader = (AliITSLoader*)rl->GetLoader("ITSLoader");
+ // AliITSgeom* geom = itsLoader->GetITSgeom();
+ Int_t ladtot1=AliITSgeomTGeo::GetNLadders(1);
+ if(fLadders) delete [] fLadders;
+ fLadders=new UShort_t[ladtot1];
- fCurrentVertex = 0;
- fInFile = 0;
- fOutFile = 0;
+
+ Double_t pos1[3],pos2[3];
+ Int_t mod1=AliITSgeomTGeo::GetModuleIndex(2,1,1);
+ AliITSgeomTGeo::GetTranslation(mod1,pos1); // position of the module in the MRS
+ Double_t phi0=TMath::ATan2(pos1[1],pos1[0]);
+ if(phi0<0) phi0+=2*TMath::Pi();
+ Int_t mod2=AliITSgeomTGeo::GetModuleIndex(2,2,1);
+ AliITSgeomTGeo::GetTranslation(mod2,pos2);
+ Double_t phi2=TMath::ATan2(pos2[1],pos2[0]);
+ if(phi2<0) phi2+=2*TMath::Pi();
+ Double_t deltaPhi= phi0-phi2; // phi width of a layer2 module
+
+ for(Int_t i= 0; i<ladtot1;i++){
+ Int_t modlad= AliITSgeomTGeo::GetModuleIndex(1,i+1,1);
+ Double_t posmod[3];
+ AliITSgeomTGeo::GetTranslation(modlad,posmod);
+ Double_t phimod=TMath::ATan2(posmod[1],posmod[0]);
+ if(phimod<0) phimod+=2*TMath::Pi();
+ Double_t phi1= phimod+deltaPhi*double(fLadOnLay2);
+ if(phi1<0) phi1+=2*TMath::Pi();
+ if(phi1>2*TMath::Pi()) phi1-=2*TMath::Pi();
+ Double_t philad1=phi0-phi1;
+ UShort_t lad1;
+ Double_t ladder1=(philad1)/(deltaPhi) +1.;
+ if(ladder1<1){ladder1=40+ladder1;}
+ lad1=int(ladder1+0.5);
+ fLadders[i]=lad1;
+ }
}
+
//______________________________________________________________________
void AliITSVertexer::WriteCurrentVertex(){
// Write the current AliVertex object to file fOutFile
- if(!fOutFile){
- Error("WriteCurrentEvent","The output file is not defined");
- return;
- }
- TDirectory *curdir = gDirectory;
- fOutFile->cd();
- fCurrentVertex->Write();
- curdir->cd();
- fCurrentVertex = 0;
+ AliRunLoader *rl = AliRunLoader::GetRunLoader();
+ AliITSLoader* itsLoader = (AliITSLoader*) rl->GetLoader("ITSLoader");
+ fCurrentVertex->SetName("Vertex");
+ // const char * name = fCurrentVertex->GetName();
+ // itsLoader->SetVerticesContName(name);
+ Int_t rc = itsLoader->PostVertex(fCurrentVertex);
+ rc = itsLoader->WriteVertices();
}
+