G4VDiscreteProcess.cc

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00025 //
00026 //
00027 // $Id$
00028 //
00029 // 
00030 // --------------------------------------------------------------
00031 //      GEANT 4 class implementation file 
00032 //
00033 //      History: first implementation, based on object model of
00034 //      2nd December 1995, G.Cosmo
00035 // --------------------------------------------------------------
00036 //   New Physics scheme           8 Jan. 1997  H.Kurahige
00037 // ------------------------------------------------------------
00038 
00039 #include "G4VDiscreteProcess.hh"
00040 #include "G4SystemOfUnits.hh"
00041 
00042 #include "G4Step.hh"
00043 #include "G4Track.hh"
00044 #include "G4MaterialTable.hh"
00045 #include "G4VParticleChange.hh"
00046 
00047 G4VDiscreteProcess::G4VDiscreteProcess()
00048                    :G4VProcess("No Name Discrete Process") 
00049 {
00050   G4Exception("G4VDiscreteProcess::G4VDiscreteProcess()","ProcMan102",
00051               JustWarning,"Default constructor is called");
00052 }
00053 
00054 G4VDiscreteProcess::G4VDiscreteProcess(const G4String& aName , G4ProcessType aType)
00055                   : G4VProcess(aName, aType)
00056 {
00057   enableAtRestDoIt = false;
00058   enableAlongStepDoIt = false;
00059 
00060 }
00061 
00062 G4VDiscreteProcess::~G4VDiscreteProcess()
00063 {
00064 }
00065 
00066 G4VDiscreteProcess::G4VDiscreteProcess(G4VDiscreteProcess& right)
00067                   : G4VProcess(right)
00068 {
00069 }
00070 
00071 G4double G4VDiscreteProcess::PostStepGetPhysicalInteractionLength(
00072                              const G4Track& track,
00073                              G4double   previousStepSize,
00074                              G4ForceCondition* condition
00075                             )
00076 {
00077   if ( (previousStepSize < 0.0) || (theNumberOfInteractionLengthLeft<=0.0)) {
00078     // beggining of tracking (or just after DoIt of this process)
00079     ResetNumberOfInteractionLengthLeft();
00080   } else if ( previousStepSize > 0.0) {
00081     // subtract NumberOfInteractionLengthLeft 
00082     SubtractNumberOfInteractionLengthLeft(previousStepSize);
00083   } else {
00084     // zero step
00085     //  DO NOTHING
00086   }
00087 
00088   // condition is set to "Not Forced"
00089   *condition = NotForced;
00090 
00091   // get mean free path
00092   currentInteractionLength = GetMeanFreePath(track, previousStepSize, condition);
00093 
00094   G4double value;
00095   if (currentInteractionLength <DBL_MAX) {
00096     value = theNumberOfInteractionLengthLeft * currentInteractionLength;
00097   } else {
00098     value = DBL_MAX;
00099   }
00100 #ifdef G4VERBOSE
00101   if (verboseLevel>1){
00102     G4cout << "G4VDiscreteProcess::PostStepGetPhysicalInteractionLength ";
00103     G4cout << "[ " << GetProcessName() << "]" <<G4endl;
00104     track.GetDynamicParticle()->DumpInfo();
00105     G4cout << " in Material  " <<  track.GetMaterial()->GetName() <<G4endl;
00106     G4cout << "InteractionLength= " << value/cm <<"[cm] " <<G4endl;
00107   }
00108 #endif
00109   return value;
00110 }
00111 
00112 G4VParticleChange* G4VDiscreteProcess::PostStepDoIt(
00113                                                     const G4Track& ,
00114                                                     const G4Step& 
00115                                                     )
00116 { 
00117 //  clear NumberOfInteractionLengthLeft
00118     ClearNumberOfInteractionLengthLeft();
00119 
00120     return pParticleChange;
00121 }

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