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// $Id: G4PImportanceConfigurator.cc,v 1.3 2002/11/04 10:47:56 dressel Exp $
// GEANT4 tag $Name: geant4-05-00 $
//
// ----------------------------------------------------------------------
// Class G4PImportanceConfigurator
//

// Author: Michael Dressel (Michael.Dressel@cern.ch)
// ----------------------------------------------------------------------

#include "G4PImportanceConfigurator.hh"

#include "G4ParallelWorld.hh"
#include "G4ImportanceAlgorithm.hh"

G4PImportanceConfigurator::
G4PImportanceConfigurator(const G4String &particlename,
			  G4ParallelWorld &parallelWorld,
			  G4VIStore &istore,
			  const G4VImportanceAlgorithm *ialg) 
  :
  fPlacer(particlename),
  fPWorld(parallelWorld),
  fDeleteIalg( ( ! ialg) ),
  fIalgorithm(( (fDeleteIalg) ? 
		new G4ImportanceAlgorithm : ialg)),
  fExaminer(*fIalgorithm, 
	    parallelWorld.GetParallelStepper(),  
	    istore),
  fParallelImportanceProcess(0)
{
  if (!fIalgorithm) {
    G4Exception("ERROR:G4PImportanceConfigurator::G4PImportanceConfigurator: no fIalgorithm!");
  }
}


G4PImportanceConfigurator::~G4PImportanceConfigurator(){
  if (fParallelImportanceProcess) {
    fPlacer.RemoveProcess(fParallelImportanceProcess);
    delete fParallelImportanceProcess;
  }
  if (fDeleteIalg) {
    delete fIalgorithm;
  }
}

void G4PImportanceConfigurator::
Configure(G4VSamplerConfigurator *preConf){
  const G4VTrackTerminator *terminator = 0;
  if (preConf) {
    terminator = preConf->GetTrackTerminator();
  };

  fParallelImportanceProcess = 
    new G4ParallelImportanceProcess(fExaminer, 
				    fPWorld.GetGeoDriver(), 
				    fPWorld.GetParallelStepper(),
				    terminator);
  if (!fParallelImportanceProcess) {
    G4Exception("ERROR:G4PImportanceConfigurator::Configure: new failed to create G4ParallelImportanceProcess!");
  }
  
  fPlacer.AddProcessAsSecondDoIt(fParallelImportanceProcess); 
}

const G4VTrackTerminator *G4PImportanceConfigurator::
GetTrackTerminator() const {
  return fParallelImportanceProcess;
}