GT_SD.h

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//! \file
//!
//! Header file for the Gem_Tracker sensitive detector class.
//!
//! The GT_SD class defines the member functions for processing the hit
//! information whenever a hit is simulated in the detector.  These
//! routines initialise the hit collection, process hits, and perform
//! the end of event action which writes out the hit information.
//!
//! \author D.K. Hasell
//! \version 1.0
//! \date 2010-10-15
//!
//! \ingroup detector

// *+****1****+****2****+****3****+****4****+****5****+****6****+****7****+****

// Ensure this header file is only included once.

#ifndef GT_SD_H
#define GT_SD_H

// Include the Gem_Tracker and other user header files referenced here.

#include "Gem_Tracker.h"
#include "GT_Hit.h"

// Include the GEANT4 header files referenced in this file.

#include "G4VSensitiveDetector.hh"
#include "G4AffineTransform.hh"

// Declare the classes referenced in this file.

class G4HCofThisEvent;
class G4Step;
class G4TouchableHistory;

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//! GT sensitive detector class based on G4VSensitiveDetector.
//!
//! Creates the GT_SD class and provides the member routines for initialising 
//! the hits collection, processing of hits, and end of event action.

class GT_SD : public G4VSensitiveDetector {

public:

     //! Constructor.

     GT_SD( G4String name );
   
     //! Destructor.

     ~GT_SD();
     
     // Member functions.

     //! Initialise the hits collection.

     void Initialize( G4HCofThisEvent * HCE );

     //! Routine to process each hit.
     //!
     //! Stores all the hit information in the data members of the hit class.
     //! ROHist is only given if a readout geometry is associated with this
     //! detector.

     G4bool ProcessHits( G4Step * step, G4TouchableHistory * ROhist );

     //! Routine to process hit information at the end of each event.

     void EndOfEvent( G4HCofThisEvent * HCE );

     //! In the event of an aborted event clear hit collections not assigned
     //! to the usual hit collection..

     void clear();

     //! Draw all hits.

     void DrawAll();

     //! Print all hits.

     void PrintAll();

     //! Set/Get energy threshold.

     G4double setThreshold( G4double );
     G4double getThreshold();

     //! Set/Get X resolution.

     G4double setXresol( G4double );
     G4double getXresol();

     //! Set/Get Y resolution.

     G4double setYresol( G4double );
     G4double getYresol();

     //! Data members.

private:

     GT_HitsCollection * GT_HC;    //!< Pointer to hits collection.

     G4double GT_threshold;        //!< Energy threshold for valid hit.

     G4double GT_Xresol;           //!< x resolution.
     G4double GT_Yresol;           //!< y resolution.

     G4bool GT_Transform[N_GT];    //! Boolean if transforms defined.

     //! Pointers to transformations.

     G4AffineTransform GT_WorldtoLocal[N_GT];
     G4AffineTransform GT_LocaltoWorld[N_GT];
};

#endif