Import Geant4 4.1.0 source tree

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+//
+// ********************************************************************
+// * 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 *
+// * based  on  the Program)  you indicate  your  acceptance of  this *
+// * statement, and all its terms.                                    *
+// ********************************************************************
+//
+//
+// $Id: G4MassImportanceProcess.hh,v 1.3 2002/04/10 13:14:16 dressel Exp $
+// GEANT4 tag $Name: geant4-04-01 $
+//
+// ----------------------------------------------------------------------
+// Class G4MassImportanceProcess
+//
+// Class description:
+//
+// Used internally by importance sampling in the "mass" geometry.
+// This process is a forced post step process. I will apply
+// importance sampling if the particle crosses a boundary in the 
+// "mass" geometry.
+
+// Author: Michael Dressel (Michael.Dressel@cern.ch)
+// ----------------------------------------------------------------------
+#ifndef G4MassImportanceProcess_hh
+#define G4MassImportanceProcess_hh G4MassImportanceProcess_hh
+
+#include "G4VProcess.hh"
+#include "G4ImportancePostStepDoIt.hh"
+
+class G4VImportanceAlgorithm;
+class G4ImportanceFinder;
+class G4VIStore;
+
+class G4MassImportanceProcess : public G4VProcess
+{
+
+public:  // with description
+
+  G4MassImportanceProcess(const G4VImportanceAlgorithm &aImportanceAlgorithm,
+			  const G4VIStore &aIstore,
+			  const G4String &aName = "MassImportanceProcess");
+    // creates a G4ParticleChange
+
+  ~G4MassImportanceProcess();
+    // delete the G4ParticleChange
+
+  virtual G4double 
+  PostStepGetPhysicalInteractionLength(const G4Track& aTrack,
+				       G4double   previousStepSize,
+				       G4ForceCondition* condition);
+    // make process beeing forced
+  virtual G4VParticleChange *PostStepDoIt(const G4Track&, const G4Step&);
+    // manage the importance sampling in the "mass" geometry
+
+public:  // without description
+
+  //  no operation in  AtRestDoIt and  AlongStepDoIt
+
+  G4double AlongStepGetPhysicalInteractionLength(const G4Track&,
+					G4double  ,
+					G4double  ,
+					G4double& ,
+					G4GPILSelection*) {return -1.0;}
+  
+  G4double AtRestGetPhysicalInteractionLength(const G4Track& ,
+				     G4ForceCondition*) {return -1.0;}
+  
+  G4VParticleChange* AtRestDoIt(const G4Track&, const G4Step&) {return 0;}
+  G4VParticleChange* AlongStepDoIt(const G4Track&, const G4Step&) {return 0;}
+  
+private:
+
+  G4MassImportanceProcess(const G4MassImportanceProcess &);
+  G4MassImportanceProcess &operator=(const G4MassImportanceProcess &);
+
+private:
+
+  G4ParticleChange *fParticleChange;
+  G4ImportancePostStepDoIt fImportancePostStepDoIt;
+  const G4VImportanceAlgorithm &fImportanceAlgorithm;
+  G4ImportanceFinder *fImportanceFinder;
+};
+
+#endif