InDet::SCT_Cluster_p2 Node1 InDet::SCT_Cluster_p2 + m_localPos + m_mat00 + m_mat01 + m_mat11 + SCT_Cluster_p2() Node2 InDet::SiWidth_p2 - m_size + SiWidth_p2() Node2->Node1 +m_width Node3 Trk::LocalPosition_p1 + m_x + m_y + LocalPosition_p1() Node3->Node2 -m_phirzWidth Node4 std::vector< rdo_diff _type > + elements Node4->Node1 +m_rdoList