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//
//
// SprayParticleGun.hh
//
// Declaration of test particle gun
//
// G4ParticleGun unfortunately is not written with enough modularity to
// inherit. So, this stuff here is written from scratch, but while refering
// to G4ParticleGun's code.
//

#ifndef SprayParticleGun_HH
#define SprayParticleGun_HH

#include "globals.hh"
#include "G4VPrimaryGenerator.hh"
#include "G4ThreeVector.hh"
#include "G4ParticleDefinition.hh"
#include "G4PrimaryVertex.hh"
#include "G4ParticleMomentum.hh"

class G4Event;
class SprayParticleGunMessenger;

class SprayParticleGun : public G4VPrimaryGenerator
{
	public:
	SprayParticleGun();
	SprayParticleGun( G4ThreeVector start );
	~SprayParticleGun();
	
	void GeneratePrimaryVertex( G4Event *evt );
	
	inline void SetPosition( G4ThreeVector position ) { start = position; }
	inline G4ThreeVector GetPosition() { return start; }
	
	inline void SetXSpray( G4int xSpray ) {spray[0] = xSpray; }
	inline G4int GetXSpray() { return spray[0]; }
	
	inline void SetYSpray( G4int ySpray ) {spray[1] = ySpray; }
	inline G4int GetYSpray() { return spray[1]; }
	
	inline void SetZSpray( G4int zSpray ) {spray[2] = zSpray; }
	inline G4int GetZSpray() { return spray[2]; }
	
	
	private:
	void SetDefaults();

	protected:
	G4int spray[3];
	G4ThreeVector start;
	G4ParticleDefinition  *particleType;

	private:
	SprayParticleGunMessenger	*messenger;
};

#endif