The interpretation of m_index depends on the m_type value. m_type m_index interpretation (0 based indices) no_type used when context makes it clear what array is being index brep_vertex Brep.m_V[] array index brep_edge Brep.m_E[] array index brep_face Brep.m_F[] array index brep_trim Brep.m_T[] array index brep_loop Brep.m_L[] array index mesh_vertex Mesh.m_V[] array index meshtop_vertex MeshTopology.m_topv[] array index meshtop_edge MeshTopology.m_tope[] array index mesh_face Mesh.m_F[] array index idef_part InstanceDefinition.m_object_uuid[] array index polycurve_segment PolyCurve::m_segment[] array index dim_linear_point LinearDimension2::POINT_INDEX dim_radial_point RadialDimension2::POINT_INDEX dim_angular_point AngularDimension2::POINT_INDEX dim_ordinate_point OrdinateDimension2::POINT_INDEX dim_text_point TextEntity2 origin point.
The interpretation of Index depends on the Type value. Type m_index interpretation (0 based indices) no_type used when context makes it clear what array is being index brep_vertex Brep.m_V[] array index brep_edge Brep.m_E[] array index brep_face Brep.m_F[] array index brep_trim Brep.m_T[] array index brep_loop Brep.m_L[] array index mesh_vertex Mesh.m_V[] array index meshtop_vertex MeshTopology.m_topv[] array index meshtop_edge MeshTopology.m_tope[] array index mesh_face Mesh.m_F[] array index idef_part InstanceDefinition.m_object_uuid[] array index polycurve_segment PolyCurve::m_segment[] array index dim_linear_point LinearDimension2::POINT_INDEX dim_radial_point RadialDimension2::POINT_INDEX dim_angular_point AngularDimension2::POINT_INDEX dim_ordinate_point OrdinateDimension2::POINT_INDEX dim_text_point TextEntity2 origin point.