/**
 *  Author John Idarraga <idarraga@cern.ch>
 */
//
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//
//
// $Id: AllPixPrimaryGeneratorAction.hh,v 1.6 2006/06/29 17:54:04 gunter Exp $
// GEANT4 tag $Name: geant4-09-02 $
//
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#ifndef AllPixPrimaryGeneratorAction_h
#define AllPixPrimaryGeneratorAction_h 1

#include "G4VUserPrimaryGeneratorAction.hh"
#include "G4VPrimaryGenerator.hh"
#include "G4GeneralParticleSource.hh"
#include "G4ThreeVector.hh"

#include "globals.hh"

#include <vector>

using namespace std;

class G4ParticleGun;
class G4Event;
class AllPixPrimaryGeneratorMessenger;
class G4VPrimaryGenerator;

enum SourceType {
  _ParticleGun = 0,
  _GeneralParticleSource,
  _HEPEvtInterface
};

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class AllPixPrimaryGeneratorAction : public G4VUserPrimaryGeneratorAction
{
public:
  AllPixPrimaryGeneratorAction(SourceType);
  ~AllPixPrimaryGeneratorAction();
  
public:
  void GeneratePrimaries(G4Event*);
  void SetHEPevtFile(G4String filename);
  void SetOptPhotonPolar();
  void SetOptPhotonPolar(G4double);
  
private:

  // simple particule gun case
  G4ParticleGun* m_particleGun;
  // using gps
  G4GeneralParticleSource * m_particleSource;
  // using external MC data
  G4VPrimaryGenerator * m_HEPEvt;

  AllPixPrimaryGeneratorMessenger* m_gunMessenger;

  // store temporarily particle positions
  vector<G4ThreeVector> m_primaryParticlePos;

  SourceType m_sType;
};

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#endif /*AllPixPrimaryGeneratorAction_h*/