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// PrimaryGeneratorAction.hh; May 2005
// See more at: http://g4advancedexamples.lngs.infn.it/Examples/hadrontherapy

#ifndef PrimaryGeneratorAction_h
#define PrimaryGeneratorAction_h 1

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

class G4GeneralParticleSource;
class G4Event;
class PrimaryGeneratorMessenger;
class BeamlineConstruction;

class PrimaryGeneratorAction : public G4VUserPrimaryGeneratorAction
{
public:
  PrimaryGeneratorAction();    
  ~PrimaryGeneratorAction();
  
public:
  // Methods to change the parameters of primary particle generation (interactively)
  void SetsigmaEnergy(G4double);
  void SetmeanKineticEnergy(G4double);
  void GeneratePrimaries(G4Event*);
  void SetXposition(G4double);
  void SetYposition(G4double);
  void SetZposition(G4double);
  void SetsigmaY(G4double);
  void SetsigmaZ(G4double);
  void SetsigmaMomentumY(G4double);
  void SetsigmaMomentumZ(G4double);
  G4double GetmeanKineticEnergy(void);
  G4double GetSigmaEnergy(void);

    G4GeneralParticleSource* GetParticleSource()           {return particleGun;}   
private:
  
  void SetDefaultPrimaryParticle();
  G4double meanKineticEnergy;
  G4double sigmaEnergy;
  G4double X0;
  G4double Y0;
  G4double Z0;
  G4double sigmaY;
  G4double sigmaZ;
  G4double sigmaMomentumY;
  G4double sigmaMomentumZ;

private:
 
 G4GeneralParticleSource* particleGun;
 G4double sigmaX;
};

#endif