<xs:simpleType name="IfcBSplineSurfaceForm">
<xs:restriction base="xs:string">
<xs:enumeration value="plane_surf"/>
<xs:enumeration value="cylindrical_surf"/>
<xs:enumeration value="conical_surf"/>
<xs:enumeration value="spherical_surf"/>
<xs:enumeration value="toroidal_surf"/>
<xs:enumeration value="surf_of_revolution"/>
<xs:enumeration value="ruled_surf"/>
<xs:enumeration value="generalised_cone"/>
<xs:enumeration value="quadric_surf"/>
<xs:enumeration value="surf_of_linear_extrusion"/>
<xs:enumeration value="unspecified"/>
</xs:restriction>
</xs:simpleType> |