Import Geant4 6.0.0 source tree

2016-06-09 10:41:53 +02:00
parent 4aea781e80
commit 96686e0c8f
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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: G4SamplingPostStepAction.cc,v 1.1 2003/11/26 14:51:12 gcosmo Exp $
+// GEANT4 tag $Name: geant4-06-00 $
+//
+// ----------------------------------------------------------------------
+// GEANT 4 class source file
+//
+// G4SamplingPostStepAction.cc
+//
+// ----------------------------------------------------------------------
+
+#include "G4SamplingPostStepAction.hh"
+#include "G4Track.hh"
+#include "G4ParticleChange.hh"
+#include "G4VImportanceSplitExaminer.hh"
+#include "G4Nsplit_Weight.hh"
+#include "G4VTrackTerminator.hh"
+#include <strstream>
+
+G4SamplingPostStepAction::
+G4SamplingPostStepAction(const G4VTrackTerminator &TrackTerminator)
+  : fTrackTerminator(TrackTerminator)
+{
+}
+
+G4SamplingPostStepAction::~G4SamplingPostStepAction()
+{
+}
+
+void G4SamplingPostStepAction::DoIt(const G4Track& aTrack, 
+                                          G4ParticleChange *aParticleChange,
+                                    const G4Nsplit_Weight &nw)
+{  
+  // evaluate results from sampler
+  if (nw.fN>1)
+  {
+    // split track 
+    Split(aTrack, nw, aParticleChange);
+  }
+  else if (nw.fN==1)
+  {
+    // don't split, but weight may be changed ! 
+    aParticleChange->SetWeightChange(nw.fW);
+  }
+  else if (nw.fN==0)
+  {
+    // kill track
+    fTrackTerminator.KillTrack();
+  }
+  else
+  {
+    // wrong answer
+    char st[200];
+    std::ostrstream os(st,200);
+    os << "Sampler returned nw = "
+       << nw
+       << "\n"
+       << '\0';
+    G4String m(st);
+    
+    G4Exception("G4SamplingPostStepAction::DoIt()",
+                "InvalidCondition", FatalException, m);
+  }
+}
+
+void G4SamplingPostStepAction::Split(const G4Track &aTrack,
+                                     const G4Nsplit_Weight &nw,
+                                           G4ParticleChange *aParticleChange)
+{
+  aParticleChange->SetWeightChange(nw.fW);
+  aParticleChange->SetNumberOfSecondaries(nw.fN-1);
+  
+  for (G4int i=1;i<nw.fN;i++)
+  {
+    G4Track *ptrack = new G4Track(aTrack);
+    
+    //    ptrack->SetCreatorProcess(aTrack.GetCreatorProcess());
+    ptrack->SetWeight(nw.fW);
+    
+    if (ptrack->GetMomentumDirection() != aTrack.GetMomentumDirection())
+    {
+      G4Exception("G4SamplingPostStepAction::Split()", "InvalidCondition",
+                  FatalException, "Track with same momentum !");
+    }
+    aParticleChange->AddSecondary(ptrack);
+  }
+  return;
+}