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// $Id: G4ImportanceConfigurator.cc,v 1.4 2008/04/21 09:10:28 ahoward Exp $
// GEANT4 tag $Name: geant4-09-03 $
//
// ----------------------------------------------------------------------
// Class G4ImportanceConfigurator
//
// Author: Michael Dressel (Michael.Dressel@cern.ch)
// ----------------------------------------------------------------------

#include "G4ImportanceConfigurator.hh"

#include "G4ImportanceProcess.hh"
#include "G4ProcessPlacer.hh"
#include "G4ImportanceAlgorithm.hh"

G4ImportanceConfigurator::
G4ImportanceConfigurator(G4VPhysicalVolume* worldvolume, 
			 const G4String &particlename,
                          G4VIStore &istore,
                          const G4VImportanceAlgorithm *ialg, G4bool para)
  : fWorld(worldvolume),
    fPlacer(particlename),
    fIStore(istore),
    fDeleteIalg( ( ! ialg) ),
    fIalgorithm(( (fDeleteIalg) ? 
                  new G4ImportanceAlgorithm : ialg)),
    fImportanceProcess(0),
    paraflag(para)
{
}

G4ImportanceConfigurator::~G4ImportanceConfigurator()
{
  if (fImportanceProcess)
  {
    fPlacer.RemoveProcess(fImportanceProcess);
    delete fImportanceProcess;
  }
  if (fDeleteIalg)
  {
    delete fIalgorithm;
  }
}

void  
G4ImportanceConfigurator::Configure(G4VSamplerConfigurator *preConf)
{
  G4cout << " entering importance configure, paraflag " << paraflag << G4endl;
  const G4VTrackTerminator *terminator = 0;
  if (preConf)
  {
    terminator = preConf->GetTrackTerminator();
  };

  G4cout << " creating importance process, paraflag is: " << paraflag << G4endl;
  fImportanceProcess = 
    new G4ImportanceProcess(*fIalgorithm, 
                                fIStore, 
                                terminator,"ImportanceProcess",paraflag);
  if (!fImportanceProcess)
  {
    G4Exception("G4ImportanceConfigurator::Configure()",
                "FatalError", FatalException,
                "Failed allocation of G4ImportanceProcess !");
  }
  
  if(paraflag) fImportanceProcess->SetParallelWorld(fWorld);

  fPlacer.AddProcessAsSecondDoIt(fImportanceProcess);
}

const G4VTrackTerminator *G4ImportanceConfigurator::
GetTrackTerminator() const
{
  return fImportanceProcess;
}