//
// ********************************************************************
// * DISCLAIMER                                                       *
// *                                                                  *
// * The following disclaimer summarizes all the specific disclaimers *
// * of contributors to this software. The specific disclaimers,which *
// * govern, are listed with their locations in:                      *
// *   http://cern.ch/geant4/license                                  *
// *                                                                  *
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// *                                                                  *
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// * GEANT4 collaboration.                                            *
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//
//
// $Id: ExN02EventAction.cc,v 1.1 2002/03/05 15:22:00 gcosmo Exp $
// GEANT4 tag $Name: geant4-04-01 $
//
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#include "ExN02EventAction.hh"

#include "G4Event.hh"
#include "G4EventManager.hh"
#include "G4TrajectoryContainer.hh"
#include "G4Trajectory.hh"
#include "G4VVisManager.hh"
#include "G4ios.hh"

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ExN02EventAction::ExN02EventAction()
{}

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ExN02EventAction::~ExN02EventAction()
{}

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void ExN02EventAction::BeginOfEventAction(const G4Event*)
{}

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void ExN02EventAction::EndOfEventAction(const G4Event* evt)
{
  G4int event_id = evt->GetEventID();
  
  // get number of stored trajectories
  //
  G4TrajectoryContainer* trajectoryContainer = evt->GetTrajectoryContainer();
  G4int n_trajectories = 0;
  if (trajectoryContainer) n_trajectories = trajectoryContainer->entries();
  
  // periodic printing
  //
  if (event_id < 100 || event_id%100 == 0) {
    G4cout << ">>> Event " << evt->GetEventID() << G4endl;
    G4cout << "    " << n_trajectories 
	   << " trajectories stored in this event." << G4endl;
  }
    
  // extract the trajectories and draw them
  //
  if (G4VVisManager::GetConcreteInstance())
    {
     for (G4int i=0; i<n_trajectories; i++) 
        { G4Trajectory* trj = (G4Trajectory*)
	                            ((*(evt->GetTrajectoryContainer()))[i]);
          trj->DrawTrajectory(50);
        }
    }
}

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