ActsVolumeMappingTool Node1 ActsVolumeMappingTool - m_magFieldContext - m_geoContext - m_trackingGeometryTool + initialize() + ActsVolumeMappingTool() + mapper() + mappingState() + trackingGeometryTool() Node2 extends< AthAlgTool, IActsVolumeMappingTool > Node2->Node1 Node3 std::shared_ptr< const Acts::TrackingGeometry > + ptr + operator->() Node3->Node1 -m_trackingGeometry Node4 std::shared_ptr< Acts ::VolumeMaterialMapper > + ptr + operator->() Node4->Node1 -m_mapper