// $Id: g4Config.C,v 1.2 2006/03/30 11:47:27 dbertini Exp $
//
// Configuration macro for Geant4 VirtualMC for Example01

void Config()
{
  // RunConfiguration for Geant4
    TG4RunConfiguration* runConfiguration
   // = new TG4RunConfiguration("geomRoot");
    = new TG4RunConfiguration("geomVMCtoRoot");
  // Switch on optical physics (not activated by default)
  TG4PhysicsListOptions options;
  options.SetOpticalPhysics(true);
  runConfiguration->SetPhysicsListOptions(options);

//    CbmRunConfiguration* runConfiguration
//           = new CbmRunConfiguration();
 
 cout << "Geant4 has been created. 1 " << endl;

  // TGeant4
  // TGeant4 *geant4= new TGeant4("TGeant4", "The Geant4 Monte Carlo", runConfiguration);
      TGeant4* geant4
      = new TGeant4("TGeant4", "The Geant4 Monte Carlo", runConfiguration);
  // create the Specific stack

    CbmStack *stack = new CbmStack(1000);
     geant4->SetStack(stack);



     cout << "Geant4 has been created." << endl;
  
  // Customise Geant4 setting
  // (verbose level, global range cut, ..)

  TString configm(gSystem->Getenv("VMCWORKDIR"));
  configm = configm + "/gconfig/g4config.in";
  cout << " -I g4Config() using g4conf  macro: " << configm << endl;
  geant4->ProcessGeantMacro(configm.Data());
}