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// $Id: GammaRayTelPrimaryGeneratorAction.hh,v 1.8 2006/06/29 15:55:49 gunter Exp $
// GEANT4 tag $Name: geant4-09-03-cand-01 $
//
// ------------------------------------------------------------
//      GEANT 4 class header file
//      CERN Geneva Switzerland
//
//
//      ------------ GammaRayTelPrimaryGeneratorAction  ------
//           by G.Santin, F.Longo & R.Giannitrapani (30 nov 2000)
//
// ************************************************************



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#ifndef GammaRayTelPrimaryGeneratorAction_h
#define GammaRayTelPrimaryGeneratorAction_h 1

#include "G4VUserPrimaryGeneratorAction.hh"
#include "globals.hh"

class G4ParticleGun;
class G4Event;
class GammaRayTelDetectorConstruction;
class GammaRayTelPrimaryGeneratorMessenger;
class G4GeneralParticleSource;

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class GammaRayTelPrimaryGeneratorAction : public G4VUserPrimaryGeneratorAction
{
public:

  GammaRayTelPrimaryGeneratorAction();    
  ~GammaRayTelPrimaryGeneratorAction();
  
public:
  void GeneratePrimaries(G4Event*);
  void SetRndmFlag(G4String val) { rndmFlag = val;}
  void SetSourceType(G4int val) { nSourceType = val;}
  void SetSpectrumType(G4int val) { nSpectrumType = val;}
  void SetVertexRadius(G4double val) { dVertexRadius = val;}
  void SetSourceGen(G4bool val) { sourceGun = val;}
  
private:
  G4ParticleGun*                particleGun;
  G4GeneralParticleSource*      particleSource;	  
  GammaRayTelDetectorConstruction*    GammaRayTelDetector;  
  GammaRayTelPrimaryGeneratorMessenger* gunMessenger; 
  G4String                      rndmFlag;    //flag for a random impact point
  G4int                         nSourceType;
  G4double                      dVertexRadius;
  G4int                         nSpectrumType;
  G4bool                        sourceGun; // false for GeneralParticleSource
  
};

#endif