From 3bffcf4722f3cb2d4ad92ff2ac7e8be38029f811 Mon Sep 17 00:00:00 2001
From: Ben Morgan <ben.morgan@warwick.ac.uk>
Date: Thu, 2 May 2024 09:05:18 +0100
Subject: [PATCH] Use G4VG interface to convert geometry in AdePT

---
 src/AdePTTrackingManager.cc | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/AdePTTrackingManager.cc b/src/AdePTTrackingManager.cc
index be71c3b3..184eccd3 100644
--- a/src/AdePTTrackingManager.cc
+++ b/src/AdePTTrackingManager.cc
@@ -8,6 +8,7 @@
 #include "G4EventManager.hh"
 #include "G4Event.hh"
 #include "G4RunManager.hh"
+#include "G4TransportationManager.hh"
 
 #include "G4Electron.hh"
 #include "G4Gamma.hh"
@@ -41,7 +42,9 @@ void AdePTTrackingManager::InitializeAdePT()
   auto tid = G4Threading::G4GetThreadId();
   if (tid < 0) {
     // Load the VecGeom world in memory
-    AdePTGeant4Integration::CreateVecGeomWorld(fAdePTConfiguration->GetVecGeomGDML());
+    auto* tman = G4TransportationManager::GetTransportationManager();
+    auto* world = tman->GetNavigatorForTracking()->GetWorldVolume();
+    AdePTGeant4Integration::CreateVecGeomWorld(world);
 
     // Track and Hit buffer capacities on GPU are split among threads
     int num_threads    = G4RunManager::GetRunManager()->GetNumberOfThreads();