 | Cartesian Point List 2D |
| Item | SPF | XML | Change | Description | IFC4 Addendum 1 4.0.1.0 |
|---|---|---|---|---|
| IfcCartesianPointList2D | ADDED | IFC4x1 Final 4.1.0.0 | ||
| IfcCartesianPointList2D | ||||
| TagList | ADDED |
The IfcCartesianPointList2D defines an ordered collection of two-dimentional Cartesian points. Each Cartesian point is provided as an two-dimensional point by a fixed list of two coordinates. The attribute CoordList is a two-dimensional list, where
NOTE The IfcCartesianPointList2D is introduced to provide a compact representation of larger list of points, such as in indexable representation of points used as vertices in poly curves.
HISTORY New entity in IFC4 ADD1.
| # | Attribute | Type | Cardinality | Description | G |
|---|---|---|---|---|---|
| 1 | CoordList | IfcLengthMeasure | L[1:?] L[2:2] | Two-dimensional list of Cartesian points provided by two coordinates. | X |
| 2 | TagList | IfcLabel | ? L[1:?] | List of tags corresponding to each point that may be used to identify a basis curve according to the Tag attribute at IfcOffsetCurveByDistances. Also used to identify IfcSectionedSolidHorizontal or IfcSectionedSurface shape string lines ("guide curves") when used within an IfcProfileDef curve of type IfcIndexedPolyCurve. | X |
| # | 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 | |||||
| IfcCartesianPointList | |||||
| Dim :=IfcPointListDim(SELF) | IfcDimensionCount | The space dimensionality of this class, either 2 or 3, depending on the sub type. | X | ||
| IfcCartesianPointList2D | |||||
| 1 | CoordList | IfcLengthMeasure | L[1:?] L[2:2] | Two-dimensional list of Cartesian points provided by two coordinates. | X |
| 2 | TagList | IfcLabel | ? L[1:?] | List of tags corresponding to each point that may be used to identify a basis curve according to the Tag attribute at IfcOffsetCurveByDistances. Also used to identify IfcSectionedSolidHorizontal or IfcSectionedSurface shape string lines ("guide curves") when used within an IfcProfileDef curve of type IfcIndexedPolyCurve. | X |
<xs:element name="IfcCartesianPointList2D" type="ifc:IfcCartesianPointList2D" substitutionGroup="ifc:IfcCartesianPointList" nillable="true"/>
<xs:complexType name="IfcCartesianPointList2D">
<xs:complexContent>
<xs:extension base="ifc:IfcCartesianPointList">
<xs:attribute name="CoordList" use="optional">
<xs:simpleType>
<xs:restriction>
<xs:simpleType>
<xs:list itemType="ifc:IfcLengthMeasure"/>
</xs:simpleType>
<xs:minLength value="2"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
<xs:attribute name="TagList" use="optional">
<xs:simpleType>
<xs:restriction>
<xs:simpleType>
<xs:list itemType="ifc:IfcLabel"/>
</xs:simpleType>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
</xs:extension>
</xs:complexContent>
</xs:complexType>
ENTITY IfcCartesianPointList2D
SUBTYPE OF (IfcCartesianPointList);
CoordList : LIST [1:?] OF LIST [2:2] OF IfcLengthMeasure;
TagList : OPTIONAL LIST [1:?] OF IfcLabel;
END_ENTITY;
EXPRESS-G diagram
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