Example for vertex finder starting from reconstructed tracks

[u/mrichter/AliRoot.git] / STEER / AliESDpid.cxx

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 * Author: The ALICE Off-line Project.                                    *
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//-----------------------------------------------------------------
//           Implementation of the combined PID class
//
//      Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
//-----------------------------------------------------------------

#include "AliESDpid.h"
#include "AliESD.h"
#include "AliESDtrack.h"

ClassImp(AliESDpid)

//_________________________________________________________________________
Int_t AliESDpid::MakePID(AliESD *event)
{
  Int_t ntrk=event->GetNumberOfTracks();
  for (Int_t i=0; i<ntrk; i++) {
    Int_t ns=AliESDtrack::kSPECIES;
    Double_t p[10]={1.,1.,1.,1.,1.,1.,1.,1.,1.,1.};

    AliESDtrack *t=event->GetTrack(i);

    if ((t->GetStatus()&AliESDtrack::kITSpid )!=0) {
      Double_t d[10];
      t->GetITSpid(d);
      for (Int_t j=0; j<ns; j++) p[j]*=d[j];
    }

    if ((t->GetStatus()&AliESDtrack::kTPCpid )!=0) {
      Double_t d[10];
      t->GetTPCpid(d);
      for (Int_t j=0; j<ns; j++) p[j]*=d[j];
    }

    if ((t->GetStatus()&AliESDtrack::kTRDpid )!=0) {
      Double_t d[10];
      t->GetTRDpid(d);
      for (Int_t j=0; j<ns; j++) p[j]*=d[j];
    }

    if ((t->GetStatus()&AliESDtrack::kTOFpid )!=0) {
      Double_t d[10];
      t->GetTOFpid(d);
      for (Int_t j=0; j<ns; j++) p[j]*=d[j];
    }

    t->SetESDpid(p);
  }
  return 0;
}