From a1269c4a76e07e053047f97bc5ca72f015a4fd7c Mon Sep 17 00:00:00 2001
From: Andre Sailer <andre.philippe.sailer@cern.ch>
Date: Wed, 8 Feb 2017 14:37:54 +0100
Subject: [PATCH] DDG4 Only create volumemanager if not yet done
---
DDG4/plugins/Geant4DetectorGeometryConstruction.cpp | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/DDG4/plugins/Geant4DetectorGeometryConstruction.cpp b/DDG4/plugins/Geant4DetectorGeometryConstruction.cpp
index 4645b7ae0..2bb868764 100644
--- a/DDG4/plugins/Geant4DetectorGeometryConstruction.cpp
+++ b/DDG4/plugins/Geant4DetectorGeometryConstruction.cpp
@@ -92,7 +92,10 @@ void Geant4DetectorGeometryConstruction::constructGeo(Geant4DetectorConstruction
ctxt->geometry = conv.create(world).detach();
g4map.attach(ctxt->geometry);
G4VPhysicalVolume* w = ctxt->geometry->world();
- ctxt->lcdd.apply("DD4hepVolumeManager", 0, 0);
+ // Create Geant4 volume manager only if not yet available
+ if ( not g4map.volumeManager().isValid() ) {
+ ctxt->lcdd.apply("DD4hepVolumeManager", 0, 0);
+ }
// Create Geant4 volume manager
g4map.volumeManager();
if ( m_dumpHierarchy ) {
--
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