vtkGeantEvent

src/HEP/Geant/Scene.cpp

@@ -95,6 +95,7 @@ public:
   // members //
   Vector<Solid *> m_Solids;
   Solid *m_World = nullptr;
+  ContainerBox m_WorldBox;
   G4RunManager *m_RunManager;
   EmitterPrimary *m_Emitter;
   Vector<GeantEvent> *m_Output;
@@ -125,16 +126,22 @@ void Scene::AddSolid(Solid *solid, Solid *parent) {
   }
 }
 
-void Scene::ConstructWorldBox(const ContainerBox *box, const char *material) {
+const Solid* Scene::GetWorld() const { return d->m_World; }
+
+ContainerBox* Scene::GetWorldBox() const { return &d->m_WorldBox; }
+
+void Scene::ConstructWorldBox(const Vector3f &size, const char *material) {
   // Get nist material manager
+
+  d->m_WorldBox.Scale(size);
+  d->m_WorldBox.SetPosition(-size/2.0f);
+
   if (!d->m_World) {
     d->m_World = new Solid("World");
     d->m_World->SetNistMaterial(material);
     AddSolid(d->m_World);
   }
 
-  Vector3f size = box->GetSize();
-
   G4Box *solidWorld = new G4Box("World", 
                                 0.5 * size(0), 
                                 0.5 * size(1),
@@ -157,9 +164,10 @@ void Scene::ConstructWorldBox(const ContainerBox *box, const char *material) {
     true);
 
   d->m_World->SetPhysical(physWorld);
-                                                    
-  Matrix4f transform = box->GetMatrix(); 
-  d->m_World->SetTransform(transform);
+
+  // no transforms are allowed for the world box
+  // Matrix4f transform = box->GetMatrix(); 
+  // d->m_World->SetTransform(transform);
 }
 
 void Scene::SetEmitter(EmitterPrimary *emitter) {