emc/dedicated/draw_geom.C

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{
  // Macro created 19/09/2006 by S.Spataro
  // It loads a simulation file and plot the geometry
  
  // Loading libraries
  // If the macro gives error messages in loading libraries, please check the path of the libs and put it by hands

  gROOT->LoadMacro("$VMCWORKDIR/gconfig/basiclibs.C");
  basiclibs();
  
  gSystem->Load("libGeoBase");
  gSystem->Load("libParBase");
  gSystem->Load("libBase");
  gSystem->Load("libField");
  gSystem->Load("libGen");
  gSystem->Load("libPassive");
  
  // add the detector libraries you need
  gSystem->Load("libStt");
  gSystem->Load("libMdt");
  gSystem->Load("libEmc");       
  gSystem->Load("libGeom.so");
  
  TFile* f = new TFile("sim_emc.root"); // the sim file you want to analyse
  
  TGeoManager *geoMan = (TGeoManager*) f->Get("FAIRGeom");

  TCanvas* c1 = new TCanvas("c1", "", 100, 100, 800, 800); // to create a canvas where to plot the geometry
  c1->SetFillColor(10);
  
  geoMan->SetVisLevel(10); // Number of folded geo levels; 3 for emc. Try to change the number and to see how the geometry changes.
  
  geoMan->GetMasterVolume()->Draw("same");
}