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// $Id: WLSPrimaryGeneratorAction.hh 69561 2013-05-08 12:25:56Z gcosmo $
//
/// \file optical/wls/include/WLSPrimaryGeneratorAction.hh
/// \brief Definition of the WLSPrimaryGeneratorAction class
//

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#ifndef WLSPrimaryGeneratorAction_h
#define WLSPrimaryGeneratorAction_h 1

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

#include "G4AffineTransform.hh"

class G4GeneralParticleSource;

class G4Event;
class G4PhysicsTable;

class WLSDetectorConstruction;
class WLSPrimaryGeneratorMessenger;

class WLSPrimaryGeneratorAction : public G4VUserPrimaryGeneratorAction
{
  public:

    WLSPrimaryGeneratorAction(WLSDetectorConstruction*);
    virtual ~WLSPrimaryGeneratorAction();

  public:

    virtual void GeneratePrimaries(G4Event*);

    void BuildEmissionSpectrum();

    void SetOptPhotonPolar(G4double);

    void SetDecayTimeConstant(G4double);

  protected:

    G4PhysicsTable* fIntegralTable;

  private:

    void SetOptPhotonPolar();
    void SetOptPhotonTime();
 
    WLSDetectorConstruction*   fDetector;
    G4GeneralParticleSource*   fParticleGun;
    WLSPrimaryGeneratorMessenger* fGunMessenger;

    static G4bool fFirst;

    G4double fTimeConstant;

};

#endif