IFC 4.3.x development IfcOffsetCurve

Change log


added Semantic definitions at the entity

An IfcOffsetCurve is an abstract entity describing a curve that is defined relative to another curve according to an offset that may be constant or variable along the referenced curve. Attributes

# Attribute Type Description
LayerAssignmentSET [0:1] OF IfcPresentationLayerAssignment FOR AssignedItemsAssignment 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.
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.

> IFC2x3 CHANGE  The inverse attribute StyledByItem has been added.
Dim INVALID The space dimensionality of this abstract class, defined differently for all subtypes, i.e. for IfcLine, IfcConic and IfcBoundedCurve.
1 BasisCurve IfcCurve The curve that is being offset. Entity inheritance

dot_inheritance IfcOffsetCurve2D IfcOffsetCurve2D IfcOffsetCurve IfcOffsetCurve IfcOffsetCurve2D->IfcOffsetCurve IfcCurve IfcCurve IfcOffsetCurve->IfcCurve IfcOffsetCurve3D IfcOffsetCurve3D IfcOffsetCurve3D->IfcOffsetCurve IfcOffsetCurveByDistances IfcOffsetCurveByDistances IfcOffsetCurveByDistances->IfcOffsetCurve IfcCurve_children 7 more... IfcCurve_children->IfcCurve IfcGeometricRepresentationItem IfcGeometricRepresentationItem IfcCurve->IfcGeometricRepresentationItem IfcGeometricRepresentationItem_children 24 more... IfcGeometricRepresentationItem_children->IfcGeometricRepresentationItem IfcRepresentationItem IfcRepresentationItem IfcGeometricRepresentationItem->IfcRepresentationItem IfcRepresentationItem_children 3 more... IfcRepresentationItem_children->IfcRepresentationItem Formal representations

ENTITY IfcOffsetCurve
 SUBTYPE OF (IfcCurve);
	BasisCurve : IfcCurve;