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// $Id: exampleB01.cc,v 1.16 2002/11/07 13:50:29 dressel Exp $
// GEANT4 tag $Name: geant4-05-00 $
//
// 
// --------------------------------------------------------------
//      GEANT 4 - exampleB01
//
// --------------------------------------------------------------
// Comments
//
// This example intends to show how to use importance sampling and scoring
// in the mass (tracking) geometry.
// A simple geometry consisting of a 180 cm high concrete cylinder
// divided into 18 slabs of 10cm each is created. 
// Importance values are assigned to the 18 concrete slabs in the
// detector construction class for simplicity.
// Pairs of G4GeometryCell and importance values are stored in
// the importance store.
// The G4Scorer is used for the scoring. This is a top level
// class using the frame work provided for scoring.
// 

// --------------------------------------------------------------

#include "g4std/iostream"

#include "G4VPhysicalVolume.hh"
#include "G4RunManager.hh"
#include "G4UImanager.hh"

#include "B01DetectorConstruction.hh"
#include "B01PhysicsList.hh"
#include "B01PrimaryGeneratorAction.hh"

// Files specific for biasing and scoring
#include "G4Scorer.hh"
#include "G4MassGeometrySampler.hh"
#include "G4IStore.hh"

// a score table
#include "G4ScoreTable.hh"


int main(int argc, char **argv)
{  
  G4std::ostream *myout = &G4cout;
  G4int numberOfEvent = 100;

  G4long myseed = 345354;

  HepRandom::setTheSeed(myseed);

  G4RunManager *runManager = new G4RunManager;
  
  // create the detector      ---------------------------
  B01DetectorConstruction *detector = new B01DetectorConstruction();
  runManager->SetUserInitialization(detector);
  //  ---------------------------------------------------
  runManager->SetUserInitialization(new B01PhysicsList);
  runManager->SetUserAction(new B01PrimaryGeneratorAction);
  runManager->Initialize();

  // the IStore is filled during detector construction
  G4IStore &aIstore = *detector->GetIStore();

  // create the importance and scoring sampler for biasing and scoring 
  // in the tracking world

  G4Scorer scorer; 

  G4MassGeometrySampler mgs("neutron");
  mgs.PrepareScoring(&scorer);
  mgs.PrepareImportanceSampling(&aIstore, 0);
  mgs.Configure();

  runManager->BeamOn(numberOfEvent);

  // print a table of the scores
  G4ScoreTable sp(&aIstore);
  sp.Print(scorer.GetMapGeometryCellCellScorer(), myout);

  return 0;
}