ITS/AliITSFindTracksV2.C

   1 #ifndef __CINT__
   2   #include "Riostream.h"
   3   #include "TFile.h"
   4   #include "TStopwatch.h"
   5
   6   #include "AliITSgeom.h"
   7   #include "AliITStrackerV2.h"
   8 #endif
   9
  10 Int_t AliITSFindTracksV2(Int_t nev=1) {  //number of events to process
  11    cerr<<"Looking for tracks...\n";
  12
  13    TFile *out=TFile::Open("AliITStracksV2.root","new");
  14    if (!out->IsOpen()) {cerr<<"Delete old AliITStracksV2.root !\n"; return 1;}
  15
  16    TFile *in=TFile::Open("AliTPCtracks.root");
  17    if (!in->IsOpen()) {cerr<<"Can't open AliTPCtracks.root !\n"; return 2;}
  18
  19    TFile *file=TFile::Open("AliITSclustersV2.root");
  20    if (!file->IsOpen()) {cerr<<"Can't open AliITSclustersV2.root !\n";return 3;}
  21
  22    AliITSgeom *geom=(AliITSgeom*)file->Get("AliITSgeom");
  23    if (!geom) {cerr<<"Can't get AliITSgeom !\n"; return 4;}
  24
  25    Int_t rc=0;
  26    TStopwatch timer;
  27    AliITStrackerV2 tracker(geom);
  28    for (Int_t i=0; i<nev; i++) {
  29      cerr<<"Processing event number : "<<i<<endl;
  30      tracker.SetEventNumber(i);
  31      //Double_t xyz[]={0.,0.,0.}, ers[]={0.,0.,0.01};//main vertex with errors
  32      //tracker.SetVertex(xyz,ers);
  33      //Int_t flag[]={1};                                 //some default flags
  34      //flag[0]= 0; tracker.SetupFirstPass(flag);         //no constraint
  35      //flag[0]=-1; tracker.SetupSecondPass(flag);        //skip second pass
  36      //tracker.SetLastLayerToTrackTo(2);            //track down to the layer 2
  37      //Int_t mask[6]={1,1,0,0,0,0};                 //not to skip pixels !
  38      //tracker.SetLayersNotToSkip(mask);            //
  39      rc=tracker.Clusters2Tracks(in,out);
  40    }
  41    timer.Stop(); timer.Print();
  42
  43    delete geom; //Thanks to Mariana Bondila
  44
  45    file->Close();
  46    in->Close();
  47    out->Close();
  48
  49    return rc;
  50 }