//____________________________________________________________________
//
// $Id: BrPhDSEvent.cxx,v 1.2 2001/11/05 06:53:17 ouerdane Exp $
// $Author: ouerdane $
// $Date: 2001/11/05 06:53:17 $
// $Copyright: 2001 BRAHMS Collaboration <brahmlib@rhic.bnl.gov>
//

//____________________________________________________________________
#include "BrPhDSEvent.h"


//____________________________________________________________________
ClassImp(BrPhDSEvent);

//____________________________________________________________________
TClonesArray *BrPhDSEvent::fgParticles = 0;

//____________________________________________________________________
 BrPhDSEvent::BrPhDSEvent()
{
   // Create an Event object.
   // When the constructor is invoked for the first time, the class static
   // variable fgTracks is 0 and the TClonesArray fgTracks is created.

   if (!fgParticles) fgParticles = new TClonesArray("BrParticle", 100);
   fParticles  = fgParticles;
   fNParticles = 0;
}

//____________________________________________________________________
 BrPhDSEvent::~BrPhDSEvent()
{
   Clear();
}

//____________________________________________________________________
 void BrPhDSEvent::AddParticle(BrParticle *particle)
{
   // Add a new particle to the list of particles for this event.
   // To avoid calling the very time consuming operator new for each track,
   // the standard but not well know C++ operator "new with placement"
   // is called. If tracks[i] is 0, a new Track object will be created
   // otherwise the previous Track[i] will be overwritten.

  TClonesArray &particles = *fParticles;
  new(particles[fNParticles++]) BrParticle(*particle);
}

//____________________________________________________________________
 void BrPhDSEvent::SetEventHeader(BrEventHeader *header) {
  fEventHeader.SetEventHeader(header);
}

//____________________________________________________________________
 void BrPhDSEvent::Clear(Option_t *option) {
   fParticles->Clear(option);
   fNParticles = 0;

   fTileMult=0;
   fTileCentralityCut=0;
   fSiMult=0;

   fRdoBB.Clear();
   fRdoZDC.Clear();
   fMrsTrackVertex.Clear();
   fMRSClusterVertex.Clear();
}

//____________________________________________________________________
 void BrPhDSEvent::Reset(Option_t *option)
{
  // Static function to reset all static objects for this event
  //   fgTracks->Delete(option);
  delete fgParticles; fgParticles = 0;
}

//  $Log: BrPhDSEvent.cxx,v $
//  Revision 1.2  2001/11/05 06:53:17  ouerdane
//  changed FFS to Ffs, MRS to Mrs etc
//
//  Revision 1.1.1.1  2001/06/21 14:55:02  hagel
//  Initial revision of brat2
//
//  Revision 1.1  2001/04/20 16:11:22  hagel
//  Initial revision
//

Copyright ; 2002 BRAHMS Collaboration <brahmlib@rcf.rhic.bnl.gov>
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