8.9.3.23 IfcConic

AbV ⓘ

ABSTRACT This definition may not be instantiated

8.9.3.23.1 Semantic definition

An IfcConic is a parameterized planar curve.

#	Attribute	Type	Description
IfcRepresentationItem (2)
	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. 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.
IfcCurve (1)
*	Dim	IfcDimensionCount	This attribute is formally derived. `IfcCurveDim(SELF)` The space dimensionality of this abstract class, defined differently for all subtypes, i.e. for IfcLine, IfcConic and IfcBoundedCurve.
Click to show 3 hidden inherited attributes
IfcConic (1)
1	Position	IfcAxis2Placement	The location and orientation of the conic. Further details of the interpretation of this attribute are given for the individual subtypes."

Table 8.9.3.23.A

 ENTITY IfcConic
 ABSTRACT SUPERTYPE OF (ONEOF
	(IfcCircle
	,IfcEllipse))
 SUBTYPE OF (IfcCurve);
	Position : IfcAxis2Placement;
END_ENTITY;