X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=ITS%2FAliITSVertexer.cxx;h=9c26520a6cb1402e5ff91779ee83e10d2729b479;hb=06a7cbee8b4adbd167aaf0cbbf142edb46623c1a;hp=0687fc7fc181a5fa0d56e94d90c470d763ce280e;hpb=cd706e57076c69189cb25dd7c1bee640001c6522;p=u%2Fmrichter%2FAliRoot.git

diff --git a/ITS/AliITSVertexer.cxx b/ITS/AliITSVertexer.cxx
index 0687fc7fc18..9c26520a6cb 100644
--- a/ITS/AliITSVertexer.cxx
+++ b/ITS/AliITSVertexer.cxx
@@ -1,119 +1,171 @@
-#include <AliESDVertex.h>
-#include <AliITSVertexer.h>
-#include <AliRunLoader.h>
-#include <AliITSLoader.h>
-#include <AliMultiplicity.h>
-#include <AliITSMultReconstructor.h>
+#include "AliLog.h"
+#include "AliMultiplicity.h"
+#include "AliITSgeomTGeo.h"
+#include "AliITSVertexer.h"
+#include "AliITSLoader.h"
+#include "AliITSMultReconstructor.h"
+
+const Float_t AliITSVertexer::fgkPipeRadius = 3.0;
 
 ClassImp(AliITSVertexer)
 
 //////////////////////////////////////////////////////////////////////
 // Base class for primary vertex reconstruction                     //
 // AliESDVertexer is a class for full 3D primary vertex finding     //
-// derived classes: AliITSVertexerIons AliITSvertexerPPZ            //
-//                  AliITSVertexer3D                                //
+// derived classes: AliITSVertexerIons AliITSvertexer3D             //
+//                  AliITSVertexerCosmics                           //
 //////////////////////////////////////////////////////////////////////
 
-//______________________________________________________________________
-AliITSVertexer::AliITSVertexer():AliVertexer() {
-  // Default Constructor
-}
-
-AliITSVertexer::AliITSVertexer(TString filename):AliVertexer() {
-  // 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;   
-  SetFirstEvent(0);
-  SetLastEvent(0);
-  rl->LoadHeader();
-  AliITSLoader* itsLoader =  (AliITSLoader*) rl->GetLoader("ITSLoader");
-  if(!filename.Contains("default"))itsLoader->SetVerticesFileName(filename);
-  if(!filename.Contains("null"))itsLoader->LoadVertices("recreate");
-  itsLoader->LoadRecPoints();
-  Int_t lst;
-  if(rl->TreeE()){
-    lst = static_cast<Int_t>(rl->TreeE()->GetEntries());
-    SetLastEvent(lst-1);
-  }
-}
+/* $Id$ */
 
 //______________________________________________________________________
-AliITSVertexer::AliITSVertexer(const AliITSVertexer &vtxr) : AliVertexer(vtxr) {
-  // Copy constructor
-  // Copies are not allowed. The method is protected to avoid misuse.
-  Error("AliITSVertexer","Copy constructor not allowed\n");
+AliITSVertexer::AliITSVertexer():AliVertexer(),
+fLadders(), 
+fLadOnLay2(0),
+fDetTypeRec(NULL),
+fFirstEvent(0),
+fLastEvent(-1)
+{
+  // Default Constructor
+  SetLaddersOnLayer2();
+  for(Int_t i=0; i<kNSPDMod;i++) fUseModule[i]=kTRUE;
 }
 
 //______________________________________________________________________
-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() {
+  // Destructor
+ if(fLadders) delete [] fLadders;
 }
 
 //______________________________________________________________________
-void AliITSVertexer::FindMultiplicity(Int_t evnumber){
+void AliITSVertexer::FindMultiplicity(TTree *itsClusterTree){
   // 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;
+
+  // get the FastOr bit mask
+  TBits fastOrFiredMap = fDetTypeRec->GetFastOrFiredMap();
+
+  AliITSMultReconstructor multReco;
+
   if(!success){
     AliWarning("Tracklets multiplicity not determined because the primary vertex was not found");
+    AliWarning("Just counting the number of cluster-fired chips on the SPD layers");
+    if (!itsClusterTree) {
+      AliError(" Invalid ITS cluster tree !\n");
+      return;
+    }
+    multReco.LoadClusterFiredChips(itsClusterTree);
+    Short_t nfcL1 = multReco.GetNFiredChips(0);
+    Short_t nfcL2 = multReco.GetNFiredChips(1);
+    fMult = new AliMultiplicity(0,0,0,0,0,0,0,0,0,nfcL1,nfcL2,fastOrFiredMap);
     return;
   }
-  AliITSMultReconstructor* multReco = new AliITSMultReconstructor();
-  AliRunLoader *rl =AliRunLoader::GetRunLoader();
-  AliITSLoader* itsLoader = (AliITSLoader*)rl->GetLoader("ITSLoader");
-  multReco->SetGeometry(itsLoader->GetITSgeom());
-  itsLoader->LoadRecPoints();
-  rl->GetEvent(evnumber);
-  TTree* itsClusterTree = itsLoader->TreeR();
+
   if (!itsClusterTree) {
-    AliError(" Can't get the ITS cluster tree !\n");
+    AliError(" Invalid 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();
+  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];
-  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];
+  Int_t *labels = new Int_t[notracks];
+  Int_t *labelsL2 = 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]);
+    labelsL2[i] = static_cast<Int_t>(multReco.GetTracklet(i)[4]);
   }
-  Int_t nosingleclus=multReco->GetNSingleClusters();
+  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];
+    ths[i] = multReco.GetCluster(i)[0];
+    phs[i] = multReco.GetCluster(i)[1];
   }
-  fMult = new AliMultiplicity(notracks,tht,phi,dphi,nosingleclus,ths,phs);
+  Short_t nfcL1 = multReco.GetNFiredChips(0);
+  Short_t nfcL2 = multReco.GetNFiredChips(1);
+  fMult = new AliMultiplicity(notracks,tht,phi,dphi,labels,labelsL2,nosingleclus,ths,phs,nfcL1,nfcL2,fastOrFiredMap);
+
   delete [] tht;
   delete [] phi;
   delete [] dphi;
   delete [] ths;
   delete [] phs;
-  itsLoader->UnloadRecPoints();
-  delete multReco;
+  delete [] labels;
+  delete [] labelsL2;
+
   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;
+  Int_t ladtot1=AliITSgeomTGeo::GetNLadders(1);
+  if(fLadders) delete [] fLadders;
+  fLadders=new UShort_t[ladtot1];
+
+
+  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;
+  }
+}
+
+#include "AliRunLoader.h"
+
+//______________________________________________________________________
+void AliITSVertexer::Init(TString filename){
+  // Initialize the vertexer in case of
+  // analysis of an entire file
+  AliRunLoader *rl = AliRunLoader::GetRunLoader();
+  if(!rl){
+    Fatal("AliITSVertexer","Run Loader not found");
+  }
+  if (fLastEvent < 0) SetLastEvent(rl->GetNumberOfEvents()-1);
+
+  AliITSLoader* itsloader =  (AliITSLoader*) rl->GetLoader("ITSLoader");
+  if(!filename.Contains("default"))itsloader->SetVerticesFileName(filename);
+  if(!filename.Contains("null"))itsloader->LoadVertices("recreate");
+}
+
 //______________________________________________________________________
 void AliITSVertexer::WriteCurrentVertex(){
   // Write the current AliVertex object to file fOutFile
@@ -125,3 +177,23 @@ void AliITSVertexer::WriteCurrentVertex(){
   Int_t rc = itsLoader->PostVertex(fCurrentVertex);
   rc = itsLoader->WriteVertices();
 }
+
+//______________________________________________________________________
+void AliITSVertexer::FindVertices(){
+  // computes the vertices of the events in the range FirstEvent - LastEvent
+
+  AliRunLoader *rl = AliRunLoader::GetRunLoader();
+  AliITSLoader* itsloader =  (AliITSLoader*) rl->GetLoader("ITSLoader");
+  itsloader->LoadRecPoints("read");
+  for(Int_t i=fFirstEvent;i<=fLastEvent;i++){
+    rl->GetEvent(i);
+    TTree* cltree = itsloader->TreeR();
+    FindVertexForCurrentEvent(cltree);
+    if(fCurrentVertex){
+      WriteCurrentVertex();
+    }
+    else {
+      AliDebug(1,Form("Vertex not found for event %d",i));
+    }
+  }
+}