The IfcGeometricCurveSet is used for the exchange of shape representation consisting of an collection of (2D or 3D) points and curves only.
|LayerAssignment||SET [0:1] OF IfcPresentationLayerAssignment FOR AssignedItems||
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.
|StyledByItem||SET [0:1] OF IfcStyledItem FOR Item||
Reference to the IfcStyledItem that provides presentation information to the representation, e.g. a curve style, including colour and thickness to a geometric curve.
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|1||Elements||SET [1:?] OF IfcGeometricSetSelect||
The geometric elements which make up the geometric set, these may be points, curves or surfaces; but are required to be of the same coordinate space dimensionality.
This attribute is formally derived.
The space dimensionality of this class, it is identical to the first element in the set. A where rule ensures that all elements have the same dimensionality.
No surface shall be included in this geometric set.
ENTITY IfcGeometricCurveSet SUBTYPE OF (IfcGeometricSet); WHERE NoSurfaces : SIZEOF(QUERY(Temp <* SELF\IfcGeometricSet.Elements | 'IFC4X3_TC1.IFCSURFACE' IN TYPEOF(Temp))) = 0; END_ENTITY;