geoTopNode.C

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/// \file
/// \ingroup tutorial_eve_7
///
/// \macro_code
///
#include <ROOT/REveGeoTopNode.hxx>
#include <ROOT/REveManager.hxx>
 
void setDetColors()
{
   gGeoManager->DefaultColors();
   // gGeoManager->GetVolume("TRAK")->InvisibleAll();
   gGeoManager->GetVolume("HVP2")->SetTransparency(20);
   gGeoManager->GetVolume("HVEQ")->SetTransparency(20);
   gGeoManager->GetVolume("YE4")->SetTransparency(10);
   gGeoManager->GetVolume("YE3")->SetTransparency(20);
   gGeoManager->GetVolume("RB2")->SetTransparency(99);
   gGeoManager->GetVolume("RB3")->SetTransparency(99);
   gGeoManager->GetVolume("COCF")->SetTransparency(99);
   gGeoManager->GetVolume("HEC1")->SetLineColor(7);
   gGeoManager->GetVolume("EAP1")->SetLineColor(7);
   gGeoManager->GetVolume("EAP2")->SetLineColor(7);
   gGeoManager->GetVolume("EAP3")->SetLineColor(7);
   gGeoManager->GetVolume("EAP4")->SetLineColor(7);
   gGeoManager->GetVolume("HTC1")->SetLineColor(2);
}
 
TGeoNode *getNodeFromPath(TGeoNode *top, std::string path)
{
   TGeoNode *node = top;
   std::istringstream f(path);
   std::string s;
   while (getline(f, s, '/'))
      node = node->GetVolume()->FindNode(s.c_str());
 
   return node;
}
 
void geoTopNode()
{
   using namespace ROOT::Experimental;
   auto eveMng = REveManager::Create();
   eveMng->AllowMultipleRemoteConnections(false, false);
 
   TFile::SetCacheFileDir(".");
 
   // tracker barrel
   auto data = new REveGeoTopNodeData("https://root.cern/files/cms.root");
   setDetColors();
   data->InitPath("/CMSE_1/TRAK_1/SVTX_1");
   data->RefDescription().SetVisLevel(2);
   eveMng->GetWorld()->AddElement(data);
 
   // 3D GL representation
   auto geoViz = new REveGeoTopNodeViz();
   geoViz->SetGeoData(data);
   data->AddNiece(geoViz);
   eveMng->GetEventScene()->AddElement(geoViz);
   geoViz->SetPickable(true);
   eveMng->Show();
}