Add Raphaelles calibration class

[u/mrichter/AliRoot.git] / ITS / AliITSVertexer.cxx

diff --git a/ITS/AliITSVertexer.cxx b/ITS/AliITSVertexer.cxx
index 39dc270722ab86178a34393af8f429fc88fa642c..a5e77c1f582cf116710a3755578930855db4fdd2 100644 (file)
--- a/ITS/AliITSVertexer.cxx
+++ b/ITS/AliITSVertexer.cxx
@@ -1,63 +1,121 @@
-#include <AliITSVertex.h>
+#include <AliESDVertex.h>
 #include <AliITSVertexer.h>
+#include <AliRunLoader.h>
+#include <AliITSLoader.h>
+#include <AliMultiplicity.h>
+#include <AliITSMultReconstructor.h>
 
 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 AliITSvertexerPPZ            //
+//                  AliITSVertexerTracks                            //
 //////////////////////////////////////////////////////////////////////
 
 //______________________________________________________________________
-AliITSVertexer::AliITSVertexer() {
+AliITSVertexer::AliITSVertexer():AliVertexer() {
   // Default Constructor
-
-    fCurrentVertex  = 0;
-    fInFile         = 0;
-    fOutFile        = 0;
-    SetDebug();
-    SetFirstEvent(0);
-    SetLastEvent(0);
 }
 
-AliITSVertexer::AliITSVertexer(TFile *infile, TFile *outfile) {
+AliITSVertexer::AliITSVertexer(TString filename) {
   // 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();
+  fDebug = 0;
   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");
+  itsLoader->LoadRecPoints();
+  Int_t lst;
+  if(rl->TreeE()){
+    lst = static_cast<Int_t>(rl->TreeE()->GetEntries());
+    SetLastEvent(lst-1);
   }
 }
 
 //______________________________________________________________________
-AliITSVertexer::~AliITSVertexer() {
-  // Default Destructor
-  // The objects poited by the following pointers are not owned
-  // by this class and are not deleted
-
-    fCurrentVertex  = 0;
-    fInFile         = 0;
-    fOutFile        = 0;
+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");
 }
 
 //______________________________________________________________________
-void AliITSVertexer::WriteCurrentVertex(){
-  // Write the current AliVertex object to file fOutFile
-  if(!fOutFile){
-    Error("WriteCurrentEvent","The output file is not defined");
+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;
+}
+
+//______________________________________________________________________
+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;
   }
-  TDirectory *curdir = gDirectory;
-  fOutFile->cd();
-  fCurrentVertex->Write();
-  curdir->cd();
-  fCurrentVertex = 0;
+  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");
+    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);
+  cout<<"======================================================="<<endl;
+  cout<<"Event number "<<evnumber<<"; tracklets= "<<multReco->GetNTracklets()<<endl;
+  Int_t notracks=multReco->GetNTracklets();
+  Float_t *trk = 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++){
+    trk[i] = multReco->GetTracklet(i)[0];
+    phi[i] =  multReco->GetTracklet(i)[1];
+    dphi[i] = multReco->GetTracklet(i)[2];
+  }
+  fMult = new AliMultiplicity(notracks,trk,phi, dphi);
+  delete [] trk;
+  delete [] phi;
+  delete [] dphi;
+  itsLoader->UnloadRecPoints();
+  delete multReco;
+  return;
+}
+
+//______________________________________________________________________
+void AliITSVertexer::WriteCurrentVertex(){
+  // Write the current AliVertex object to file fOutFile
+  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();
 }