G4VFastSimulationModel.hh

Go to the documentation of this file.

//
// ********************************************************************
// * License and Disclaimer                                           *
// *                                                                  *
// * The  Geant4 software  is  copyright of the Copyright Holders  of *
// * the Geant4 Collaboration.  It is provided  under  the terms  and *
// * conditions of the Geant4 Software License,  included in the file *
// * LICENSE and available at  http://cern.ch/geant4/license .  These *
// * include a list of copyright holders.                             *
// *                                                                  *
// * 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.  Please see the license in the file  LICENSE  and URL above *
// * for the full disclaimer and the limitation of liability.         *
// *                                                                  *
// * This  code  implementation is the result of  the  scientific and *
// * technical work of the GEANT4 collaboration.                      *
// * By using,  copying,  modifying or  distributing the software (or *
// * any work based  on the software)  you  agree  to acknowledge its *
// * use  in  resulting  scientific  publications,  and indicate your *
// * acceptance of all terms of the Geant4 Software license.          *
// ********************************************************************
//
//
// $Id$
//
// 
//---------------------------------------------------------------
//
//  G4VFastSimulationModel.hh
//
//  Description:
//    Base class for fast simulation models.
//
//  History:
//    Oct 97: Verderi && MoraDeFreitas - First Implementation.
//
//---------------------------------------------------------------
 
 
#ifndef G4VFastSimulationModel_h
#define G4VFastSimulationModel_h
 
#include "G4FastTrack.hh"
#include "G4FastStep.hh"
 
//---------------------------
// For possible future needs:
//---------------------------
typedef G4Region G4Envelope;
 
//-------------------------------------------
//
//        G4VFastSimulationModel class
//
//-------------------------------------------
 
// Class Description:
//   This is the abstract class for the implementation of parameterisations. 
//   You have to inherit from it to implement your concrete parameterisation 
//   model.
//
 
 class G4VFastSimulationModel 
{
 public: // With description
 
  G4VFastSimulationModel(const G4String& aName);
  // aName identifies the parameterisation model.
 
  G4VFastSimulationModel(const G4String& aName, G4Envelope*, 
             G4bool IsUnique=FALSE);
  // This constructor allows you to get a quick "getting started".
  // In addition to the model name, this constructor accepts a G4LogicalVolume 
  // pointer. This volume will automatically becomes the envelope, and the 
  // needed G4FastSimulationManager object is constructed if necessary giving 
  // it the G4LogicalVolume pointer and the boolean value. If it already 
  // exists, the model is simply added to this manager. However the 
  // G4VFastSimulationModel object will not keep track of the envelope given 
  // in the constructor.
  // The boolean argument is there for optimization purpose: if you know that 
  // the G4LogicalVolume envelope is placed only once you can turn this 
  // boolean value to "true" (an automated mechanism is foreseen here.)
 
public: // Without description
  virtual ~G4VFastSimulationModel() {};
 
public: // With description
 
  virtual G4bool IsApplicable(const G4ParticleDefinition&) = 0;
  // In your implementation, you have to return "true" when your model is 
  // applicable to the G4ParticleDefinition passed to this method. The 
  // G4ParticleDefinition provides all intrisic particle informations (mass, 
  // charge, spin, name ...).
 
  virtual G4bool ModelTrigger(const G4FastTrack &) = 0;
  // You have to return "true" when the dynamics conditions to trigger your
  // parameterisation are fulfiled. The G4FastTrack provides you access to 
  // the current G4Track, gives simple access to envelope related features 
  // (G4LogicalVolume, G4VSolid, G4AffineTransform references between the 
  // global and the envelope local coordinates systems) and simple access to 
  // the position, momentum expressed in the envelope coordinate system. 
  // Using those quantities and the G4VSolid methods, you can for example 
  // easily check how far you are from the envelope boundary. 
 
  virtual void DoIt(const G4FastTrack&, G4FastStep&) = 0;
  // Your parameterisation properly said. The G4FastTrack reference provides 
  // input informations. The final state of the particles after parameterisation
  // has to be returned through the G4FastStep reference. This final state is 
  // described has "requests" the tracking will apply after your 
  // parameterisation has been invoked.
 
  // ---------------------------
  // -- Idem for AtRest methods:
  // ---------------------------
  // -- A default dummy implementation is provided.
 
  virtual 
  G4bool AtRestModelTrigger(const G4FastTrack&) {return false;}
  // You have to return "true" when the dynamics conditions to trigger your
  // parameterisation are fulfiled. The G4FastTrack provides you access to 
  // the current G4Track, gives simple access to envelope related features 
  // (G4LogicalVolume, G4VSolid, G4AffineTransform references between the 
  // global and the envelope local coordinates systems) and simple access to 
  // the position, momentum expressed in the envelope coordinate system. 
  // Using those quantities and the G4VSolid methods, you can for example 
  // easily check how far you are from the envelope boundary. 
 
  virtual 
  void   AtRestDoIt  (const G4FastTrack&, G4FastStep&) {}
  // Your parameterisation properly said. The G4FastTrack reference provides 
  // input informations. The final state of the particles after parameterisation
  // has to be returned through the G4FastStep reference. This final state is 
  // described has "requests" the tracking will apply after your 
  // parameterisation has been invoked.
  
public: // Without description
 
  // Useful public methods :
  const G4String GetName() const;
  G4bool operator == ( const G4VFastSimulationModel&) const;
 
private:
  //-------------
  // Model Name:
  //-------------
  G4String theModelName;
};
 
inline const G4String G4VFastSimulationModel::GetName() const 
{
  return theModelName;
}
 
inline G4bool 
G4VFastSimulationModel::operator == (const G4VFastSimulationModel& fsm) const
{
  return (this==&fsm) ? true : false;
}
#endif