CRTv1, GenCRT modules added

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

/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/

/*
$Log$
*/

////////////////////////////////////////////////////////////////////////
//
// AliTrackMap.cxx
// description: 
//   contains a relation between track label and it's index
//   in a TreeH.
//   The main method is At, it takes a particle label as an argument
//   and returns the correponding entry in TreeH (many particles
//   are usually stored in 1 TreeH entry, one has to check particle
//   labels for each hit). 'At' returns:
//       kNoEntry = -1 if the particle has no entry in TreeH
//       kOutOfBounds = -2 if the particle label is out of bounds
//                  
//  Author: Jiri Chudoba (CERN), 2002
//
////////////////////////////////////////////////////////////////////////

#include <iostream.h>

#include "TTree.h"
#include "TROOT.h"

#include "AliTrackMap.h"

#include "AliRun.h"

ClassImp(AliTrackMap)

////////////////////////////////////////////////////////////////////////
AliTrackMap::AliTrackMap()
{
//
// default ctor
//
  fArray=0; 
  fSize = 0;
}
////////////////////////////////////////////////////////////////////////
AliTrackMap::AliTrackMap(Int_t size, Int_t *array) : 
  TNamed("AliTrackMap", "AliTrackMap")
{
//
// ctor
//

  fSize = size;
  fArray = new Int_t[fSize];
  for (Int_t i = 0; i < fSize; i++) fArray[i] = array[i];
}
////////////////////////////////////////////////////////////////////////
AliTrackMap::~AliTrackMap()
{
//
// dtor
//

  delete [] fArray;
}

////////////////////////////////////////////////////////////////////////
Int_t AliTrackMap::At(Int_t label)
{
//
// returns entry number in the TreeH corresponding to particle with 
// label label
//
  if (label < 0 || label >= fSize) {
    cerr<<"AliTrackMap::At: label "<<label<<" out of range, fSize = "<<fSize<<endl;
    return kOutOfBounds;
  }
  return fArray[label];
}
////////////////////////////////////////////////////////////////////////
void AliTrackMap::SetEventNr(Int_t eventNr) 
{
//
// map is identified by it's name, event number is part of it
//
  char name[20];
  sprintf(name,"AliTrackMap_%5.5d",eventNr);
  SetName(name);  
}
////////////////////////////////////////////////////////////////////////
void AliTrackMap::PrintValues() 
{
//
// method for debugging
//
  cout<<this->GetName()<<" contains these values: "<<endl;
  for (Int_t i = 0; i < fSize; i++) {
    cout<<i<<"\t"<<fArray[i]<<"\n";
  }
}
////////////////////////////////////////////////////////////////////////