Import Geant4 10.0.0 source tree

source/processes/biasing/generic/include/G4BOptnForceCommonTruncatedExp.hh

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+//
+// ********************************************************************
+// * 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 *
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+// * acceptance of all terms of the Geant4 Software license.          *
+// ********************************************************************
+//
+//
+// $Id: $
+//
+//---------------------------------------------------------------
+//
+// G4BOptnForceCommonTruncatedExp
+//
+// Class Description:
+//    A G4VBiasingOperation physics-based biasing operation. It
+//    handles several processes together, biasing on the total
+//    cross-section of these processes (instead of biasing them
+//    individually).
+//    The biasing interaction law is a truncated exponential
+//    one, driven by the total cross-section and which extends
+//    in the range [0,L].
+//    Process are registered with the AddCrossSection method.
+//    As cross-sections are all known at the end of the
+//    PostStepGPIL loop, the step limitation is made at the
+//    AlongStepGPIL level.
+//
+//---------------------------------------------------------------
+//   Initial version                         Nov. 2013 M. Verderi
+
+
+#ifndef G4BOptnForceCommonTruncatedExp_hh
+#define G4BOptnForceCommonTruncatedExp_hh 1
+
+#include "G4VBiasingOperation.hh"
+#include "G4ThreeVector.hh"
+class G4ILawCommonTruncatedExp;
+#include <map>
+
+class G4BOptnForceCommonTruncatedExp : public G4VBiasingOperation {
+public:
+  // -- Constructor :
+  G4BOptnForceCommonTruncatedExp(G4String name);
+  // -- destructor:
+  virtual ~G4BOptnForceCommonTruncatedExp();
+  
+public:
+  // -- Methods from G4VBiasingOperation interface:
+  // -------------------------------------------
+  // -- Used:
+  virtual const G4VBiasingInteractionLaw* ProvideOccurenceBiasingInteractionLaw( const G4BiasingProcessInterface* );
+  virtual G4ForceCondition                                ProposeForceCondition( const G4ForceCondition processCondition );
+  virtual G4bool                                        DenyProcessPostStepDoIt( const G4BiasingProcessInterface*, const G4Track*, const G4Step*, G4double& );
+  virtual G4double                                        ProposeAlongStepLimit( const G4BiasingProcessInterface* );
+  virtual G4GPILSelection                                  ProposeGPILSelection( const G4GPILSelection  processSelection );
+  
+  // -- Unused:
+  virtual G4VParticleChange*                       ApplyFinalStateBiasing( const G4BiasingProcessInterface*,
+									   const G4Track*,
+									   const G4Step*  )   {return 0;}
+  virtual G4double                               DistanceToApplyOperation( const G4Track*,
+									   G4double,
+									   G4ForceCondition*) {return DBL_MAX;}
+  virtual G4VParticleChange*                    GenerateBiasingFinalState( const G4Track*,
+									   const G4Step*  )   {return 0;}
+  
+public:
+  // -- Additional methods, specific to this class:
+  // ----------------------------------------------
+  // -- return concrete type of interaction law:
+  G4ILawCommonTruncatedExp* GetCommonTruncatedExpLaw()
+  {
+    return fCommonTruncatedExpLaw;
+  }
+  void                           Initialize( const G4Track* );
+  void                        UpdateForStep( const G4Step*  );
+  void                               Sample();
+  const G4ThreeVector&   GetInitialMomentum() const { return fInitialMomentum; }
+  G4double               GetMaximumDistance() const { return fMaximumDistance;}
+  void                 ChooseProcessToApply();
+  const G4VProcess*       GetProcessToApply() const { return fProcessToApply; }
+  void                      AddCrossSection( const G4VProcess*, G4double );
+  G4double    GetTriggeredProcessXSfraction();
+  void           PostStepInteractionOccured( const G4VProcess* );
+  void                SetInteractionOccured( G4bool b ) { fInteractionOccured = b; }
+  G4bool              GetInteractionOccured() const   { return fInteractionOccured; }
+  
+private:
+  G4ILawCommonTruncatedExp*                fCommonTruncatedExpLaw;
+  G4double                                     fTotalCrossSection;
+  std::map < const G4VProcess*, G4double >         fCrossSections;
+  size_t                                         fNumberOfSharing;
+  //G4bool                                         fFirstCallToDeny;
+  const G4VProcess*                               fProcessToApply;
+  G4bool                                      fInteractionOccured;
+  G4ThreeVector                                  fInitialMomentum;
+  G4double                                       fMaximumDistance;
+};
+
+#endif