//
// ********************************************************************
// * 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                                  *
// *                                                                  *
// * Neither the authors of this software system, nor their employing *
// * institutes,nor the agencies providing financial support for this *
// * work  make  any representation or  warranty, express or implied, *
// * regarding  this  software system or assume any liability for its *
// * use.                                                             *
// *                                                                  *
// * This  code  implementation is the  intellectual property  of the *
// * GEANT4 collaboration.                                            *
// * By copying,  distributing  or modifying the Program (or any work *
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//
//
// $Id: G4RayShooter.hh,v 1.3 2001/07/11 10:09:02 gunter Exp $
// GEANT4 tag $Name: geant4-05-00 $
//

// class description:
//
//  the object of this class shoots a ray (actually geantino) primary particle
// associated with a G4Event object. This slass must be used exclusively by
// G4RayTracer.
//

#ifndef G4RayShooter_h
#define G4RayShooter_h 1


#include "globals.hh"
#include "G4ThreeVector.hh"
#include "G4ParticleDefinition.hh"
#include "G4PrimaryVertex.hh"
#include "G4ParticleMomentum.hh"

class G4Event;

class G4RayShooter
{
  public: 
     G4RayShooter();
  public:
     virtual ~G4RayShooter();

  public: // with description
     void Shoot(G4Event* evt,G4ThreeVector vtx,G4ThreeVector direc);
     // This method generates a primary vertex and a primary particle at the
     // given vertex point and with the given direction. This method is invoked
     // by G4RayTracer.

  private:  
     void SetInitialValues();

     G4ParticleDefinition* particle_definition;
     G4ParticleMomentum    particle_momentum_direction;
     G4double	           particle_energy;
     G4ThreeVector         particle_position;
     G4double              particle_time;
     G4ThreeVector         particle_polarization;
};

#endif