add assembly to gcompose, not working yet

src/Vtk/Math/vtkAssembly.cpp

@@ -70,6 +70,7 @@ void Assembly::InstallPipe() {
     m_BBoxActor->GetProperty()->SetColor(1.0, 0.85, 0.0);   // gold wireframe
     m_BBoxActor->GetProperty()->SetLineWidth(1.5);
     m_BBoxActor->GetProperty()->SetOpacity(0.6);
+    m_BBoxActor->PickableOff();
     m_BBoxActor->SetVisibility(m_Content ? m_Content->GetShowBoundingBox() : false);
 
     m_VtkAsm->AddPart(m_BBoxActor);

src/Vtk/Math/vtkAssembly.h

@@ -48,6 +48,7 @@ public:
     virtual void SyncFromVtk() override;
 
     virtual uLib::Object* GetContent() const override { return (uLib::Object*)m_Content; }
+    virtual uLib::ObjectsContext* GetChildren() override { return (uLib::ObjectsContext*)m_Content; }
 
     /** @brief Called when the model signals an update (model→VTK push). */
     void contentUpdate();