// $Id: PamG4Libs.C,v 1.0 2007/06/01 
//


#include <iostream>

void PamG4Libs()
{
// Loads granular Geant4 libraries.
// Change the comment if global libraries are used.
// ---

  PamG4Libs_granular();
  // PamG4Libs_global();
}   

Bool_t isSet(const char* variable)
{
// Checks if the specified environment variable is set
// ---

  TString value = gSystem->Getenv(variable);
  if ( value != "") return true;
  
  return false;
}  

Bool_t isLibrary(const char* libName)
{
  if (TString(gSystem->DynamicPathName(libName, kTRUE)) != TString(""))
    return kTRUE;
  else  
    return kFALSE;
}    

void vgmlibs()
{ 
  if (isSet("USE_VGM")) { 
    cout << "Loading VGM libraries ... " << endl;
    gSystem->Load("libClhepVGM");
    gSystem->Load("libBaseVGM");
    gSystem->Load("libGeant4GM");
    gSystem->Load("libRootGM");
    gSystem->Load("libXmlVGM");
  }  
}
  
void PamG4Libs_graphics(Bool_t granular = true) 
{
// Loads G4 graphics libraries, 
// external packages: graphics drivers, .. used by G4
// ---
  
  // Graphics configuration
  Bool_t isXt = isSet("G4VIS_BUILD_OPACS_DRIVER") ||
                isSet("G4VIS_BUILD_OPENGLXM_DRIVER") ||
                isSet("G4VIS_BUILD_OIX_DRIVER") ||
		isSet("G4UI_BUILD_XM_SESSION") ||
		isSet("G4UI_BUILD_XAW_SESSION") ||
		isSet("G4UI_BUILD_WO_SESSION");
  Bool_t isXm = isSet("G4VIS_BUILD_OPENGLXM_DRIVER") ||
  		isSet("G4UI_BUILD_XM_SESSION");
  Bool_t isXaw = isSet("G4UI_BUILD_XAW_SESSION");
  Bool_t isGAG = !isSet("G4UI_NONE") && isSet("G4UI_USE_GAG");
  Bool_t isDAWN = !isSet("G4VIS_NONE");
  Bool_t isOpenGL = !isSet("G4VIS_NONE") &&
                    (isSet("G4VIS_BUILD_OPENGLX_DRIVER") ||
                     isSet("G4VIS_BUILD_OPENGLXM_DRIVER"));
  Bool_t isVRML = !isSet("G4VIS_NONE");
  Bool_t isRayTracer = !isSet("G4VIS_NONE");
  Bool_t isZLIB = isSet("G4_BUILD_ZLIB");

  // Geant4 interfaces
  //
  if (isXt) {
    gSystem->Load("libXt");
  }
  if (isXm) {
    gSystem->Load("libXm");
  }
  if (isXaw) {
    gSystem->Load("libXaw");
  }
  if (isZLIB){
    gSystem->Load("libG4zlib");
  }  
  if (granular) {
    gSystem->Load("libG4UIcommon");
    gSystem->Load("libG4UIbasic");
  }
  else
   gSystem->Load("libG4interfaces");
   
  if (isGAG) 
    gSystem->Load("libG4UIGAG");

  // Geant4 visualization
  //
  gSystem->Load("libG4modeling");
  gSystem->Load("libG4vis_management");
  gSystem->Load("libG4Tree");
  gSystem->Load("libG4visHepRep");
  gSystem->Load("libG4visXXX");
  if (isDAWN)
    gSystem->Load("libG4FR");
  if (isOpenGL) {
    gSystem->Load("libGLU");
    gSystem->Load("libGL");
    gSystem->Load("libG4OpenGL");
  }  
  if (isVRML)
    gSystem->Load("libG4VRML");
  if (isRayTracer)
    gSystem->Load("libG4RayTracer");
}


void PamG4Libs_granular()
{
// Loads G4 granular libraries and G4 VMC library. 
// external packages: CLHEP, graphics drivers, .. used by G4
// ---

  cout << "Loading Geant4 granular libraries ..." << endl;

  // CLHEP
  gSystem->Load("libCLHEP");

  // G4 categories

  // global
  gSystem->Load("libG4globman");  
  gSystem->Load("libG4hepnumerics");

  // graphics_reps
  gSystem->Load("libG4graphics_reps");   

  // intercoms
  gSystem->Load("libG4intercoms");

  // materials
  gSystem->Load("libG4materials");

  // geometry
  gSystem->Load("libG4geometrymng");  
  gSystem->Load("libG4magneticfield");
  gSystem->Load("libG4volumes");
  gSystem->Load("libG4navigation");
  gSystem->Load("libG4geomBoolean");  
  gSystem->Load("libG4csg");  
  gSystem->Load("libG4brep"); 
  gSystem->Load("libG4specsolids"); 
  gSystem->Load("libG4geombias");
  gSystem->Load("libG4geomdivision");
  
  // particles  
  gSystem->Load("libG4partman");
  gSystem->Load("libG4partutils");
  gSystem->Load("libG4bosons");   
  gSystem->Load("libG4baryons");  
  gSystem->Load("libG4ions");
  gSystem->Load("libG4mesons");
  gSystem->Load("libG4leptons");
  gSystem->Load("libG4shortlived");

  // track
  gSystem->Load("libG4track");

  // processes
  gSystem->Load("libG4procman");
  gSystem->Load("libG4parameterisation");
  gSystem->Load("libG4transportation");
  gSystem->Load("libG4cuts");
  gSystem->Load("libG4decay");  
     
  gSystem->Load("libG4emutils");  
  gSystem->Load("libG4emstandard");   
  gSystem->Load("libG4emlowenergy");  
  gSystem->Load("libG4muons");
  gSystem->Load("libG4xrays");
  gSystem->Load("libG4optical");

  gSystem->Load("libG4hadronic_util");
  gSystem->Load("libG4hadronic_xsect");
  gSystem->Load("libG4hadronic_stop");
  gSystem->Load("libG4hadronic_mgt");   
  gSystem->Load("libG4hadronic_proc");
  gSystem->Load("libG4had_mod_man.so");
  gSystem->Load("libG4had_im_r_matrix.so");
  gSystem->Load("libG4had_string_man.so");
  gSystem->Load("libG4had_string_diff.so");
  gSystem->Load("libG4had_string_frag.so");
  gSystem->Load("libG4had_mod_util.so");
  gSystem->Load("libG4hadronic_qgstring");
  gSystem->Load("libG4hadronic_HE");  
  gSystem->Load("libG4hadronic_LE");  
  gSystem->Load("libG4hadronic_deex_util"); 
  gSystem->Load("libG4hadronic_bert_cascade.so");
  gSystem->Load("libG4had_muon_nuclear.so");
  gSystem->Load("libG4had_neu_hp.so");
  gSystem->Load("libG4had_preequ_exciton.so");
  gSystem->Load("libG4had_theo_max.so");
  gSystem->Load("libG4hadronic_binary.so"); 
  gSystem->Load("libG4hadronic_body_ci.so");
  gSystem->Load("libG4hadronic_coherent_elastic.so"); 
  gSystem->Load("libG4hadronic_deex_management.so");
  gSystem->Load("libG4hadronic_deex_gem_evaporation.so");
  gSystem->Load("libG4hadronic_deex_evaporation.so");
  gSystem->Load("libG4hadronic_deex_fermi_breakup.so");
  gSystem->Load("libG4hadronic_deex_fission.so");
  gSystem->Load("libG4hadronic_deex_handler.so");
  gSystem->Load("libG4hadronic_deex_multifragmentation.so");
  gSystem->Load("libG4hadronic_deex_photon_evaporation.so");
  gSystem->Load("libG4hadronic_hetcpp_evaporation.so");
  gSystem->Load("libG4hadronic_hetcpp_utils.so");
  gSystem->Load("libG4hadronic_interface_ci.so");
  gSystem->Load("libG4hadronic_iso.so");
  gSystem->Load("libG4hadronic_leading_particle.so");
  gSystem->Load("libG4hadronic_radioactivedecay.so");

  // tracking
  gSystem->Load("libG4tracking");

  // digits_hits  
  gSystem->Load("libG4hits");
  gSystem->Load("libG4digits");   
  gSystem->Load("libG4detector");
  gSystem->Load("libG4detutils");   

  // parameterisation
  gSystem->Load("libG4gflash");
  //gSystem->Load("libG4trdmodels");

  // event
  gSystem->Load("libG4event");  

  // readout
  gSystem->Load("libG4readout");
  
  // run
  gSystem->Load("libG4run");
  
  // g3tog4
  gSystem->Load("libG3toG4");   

  // interfaces and graphics
  PamG4Libs_graphics();
  
  // VGM libraries
  vgmlibs();
    
  // G4Root library (if available)
  if ( isLibrary("libG4root") )
    gSystem->Load("libG4root");

  // Geant4 VMC library
  gSystem->Load("libgeant4vmc");

  cout << "Loading libraries ... finished" << endl;
}

void PamG4Libs_global()
{
// Loads G4 global libraries, 
// external packages: CLHEP, graphics drivers, .. used by G4
// and Alice G4 libraries: AliGeant4, TGeant4
// ---

  cout << "Loading Geant4 global libraries ..." << endl;
 
   // CLHEP
  gSystem->Load("$(CLHEP_BASE_DIR)/lib/libCLHEP");

  // Geant4
  gSystem->Load("libG4global");
  gSystem->Load("libG4graphics_reps");
  gSystem->Load("libG4intercoms");
  gSystem->Load("libG4materials");
  gSystem->Load("libG4geometry");
  gSystem->Load("libG4particles");
  gSystem->Load("libG4track");
  gSystem->Load("libG4processes");
  gSystem->Load("libG4tracking");
  gSystem->Load("libG4digits_hits");
  gSystem->Load("libG4event");
  gSystem->Load("libG4readout");
  gSystem->Load("libG4run");
  gSystem->Load("libG3toG4");

  // interfaces and graphics
  PamG4ibs_graphics(false);
 
  // VGM libraries
  vgmlibs();

  // geant4 VMC
  gSystem->Load("libgeant4vmc");

  cout << "Loading libraries ... finished" << endl;
}