| # | Attribute | Type | Cardinality | Description | G |
|---|---|---|---|---|---|
| IfcRepresentationItem | |||||
| LayerAssignment | IfcPresentationLayerAssignment @AssignedItems | S[0:1] | Assignment of the representation item to a single or multiple layer(s). The LayerAssignments can override a LayerAssignments of the IfcRepresentation it is used within the list of Items.
IFC2x3 CHANGE The inverse attribute LayerAssignments has been added. IFC4 CHANGE The inverse attribute LayerAssignment has been restricted to max 1. Upward compatibility for file based exchange is guaranteed. | X | |
| StyledByItem | IfcStyledItem @Item | S[0:1] | Reference to the IfcStyledItem that provides presentation information to the representation, e.g. a curve style, including colour and thickness to a geometric curve.
IFC2x3 CHANGE The inverse attribute StyledByItem has been added. | X | |
| IfcGeometricRepresentationItem | |||||
| IfcSolidModel | |||||
| Dim :=3 | IfcDimensionCount | The space dimensionality of this class, it is always 3. | X | ||
| IfcSweptAreaSolid | |||||
| 1 | SweptArea | IfcProfileDef | The surface defining the area to be swept. It is given as a profile definition within the xy plane of the position coordinate system. | X | |
| 2 | Position | IfcAxis2Placement3D | ? |
Position coordinate system for the resulting swept solid of the sweeping operation. The position coordinate system allows for re-positioning of the swept solid. If not provided, the swept solid remains within the position as determined by the cross section or by the directrix used for the sweeping operation.
IFC4 CHANGE The attribute has been changed to OPTIONAL with upward compatibility for file-based exchange. | X |
| IfcDirectrixCurveSweptAreaSolid | |||||
| 3 | Directrix | IfcCurve | The curve used to define the sweeping operation. The solid is generated by sweeping the SELF\IfcSweptAreaSolid.SweptArea along the Directrix. | X | |
| 4 | StartParam | IfcCurveMeasureSelect | ? | The parameter value on the Directrix at which the sweeping operation commences. If no value is provided the start of the sweeping operation is at the start of the Directrix. | X |
| 5 | EndParam | IfcCurveMeasureSelect | ? | The parameter value on the Directrix at which the sweeping operation ends. If no value is provided the end of the sweeping operation is at the end of the Directrix. | X |
| IfcFixedReferenceSweptAreaSolid | |||||
| 6 | FixedReference | IfcDirection | X | ||
| IfcDirectrixDerivedReferenceSweptAreaSolid | |||||
<xs:element name="IfcDirectrixDerivedReferenceSweptAreaSolid" type="ifc:IfcDirectrixDerivedReferenceSweptAreaSolid" substitutionGroup="ifc:IfcFixedReferenceSweptAreaSolid" nillable="true"/>
<xs:complexType name="IfcDirectrixDerivedReferenceSweptAreaSolid">
<xs:complexContent>
<xs:extension base="ifc:IfcFixedReferenceSweptAreaSolid"/>
</xs:complexContent>
</xs:complexType>
ENTITY IfcDirectrixDerivedReferenceSweptAreaSolid
SUBTYPE OF (IfcFixedReferenceSweptAreaSolid);
END_ENTITY;
EXPRESS-G diagram
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