8.9.3.22 IfcCompositeCurveSegment

8.9.3.22.1 Semantic definition

An IfcCompositeCurveSegment is a bounded curve constructed for the sole purpose to be a segment within an IfcCompositeCurve.

8.9.3.22.2 Entity inheritance

8.9.3.22.3 Attributes

#	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.
IfcSegment (3)
1	Transition	IfcTransitionCode	Connectivity between the continuous segments is not enforced per se to be tangential. Setting "TangentialContinuity" to True means that the current segment shall continue with tangential continuity to the previous one.
	UsingCurves	SET [1:?] OF IfcCompositeCurve FOR Segments	The set of composite curves which use this composite curve segment as a segment. This set shall not be empty.
*	Dim	IfcDimensionCount	This attribute is formally derived. `IfcSegmentDim(SELF)` The space dimensionality of this abstract class, handled by a function specific for concrete subtypes which returns the dimensionality of the ParentCurve attribute (defined on both subtypes).
Click to show 5 hidden inherited attributes
IfcCompositeCurveSegment (2)
2	SameSense	IfcBoolean	An indicator of whether or not the sense of the segment agrees with, or opposes, that of the parent curve. If SameSense is false, the point with highest parameter value is taken as the first point of the segment. NOTE If the datatype of ParentCurve is IfcTrimmedCurve, the value of SameSense overrides the value of IfcTrimmedCurve.SenseAgreement
3	ParentCurve	IfcCurve	The bounded curve which defines the geometry of the segment.

Table 8.9.3.22.C

8.9.3.22.4 Formal propositions

Name	Description
ParentIsBoundedCurve	The parent curve shall be a bounded curve.
`('IFC4X3_DEV_738df036.IFCBOUNDEDCURVE' IN TYPEOF(ParentCurve))`

Table 8.9.3.22.D

8.9.3.22.5 Examples

Figure 8.9.3.22.A

Curve Parameters In Degrees
Figure 8.9.3.22.B

Curve Parameters In Radians

8.9.3.22.6 Formal representation

 ENTITY IfcCompositeCurveSegment
 SUPERTYPE OF (ONEOF
	(IfcReparametrisedCompositeCurveSegment))
 SUBTYPE OF (IfcSegment);
	SameSense : IfcBoolean;
	ParentCurve : IfcCurve;
 WHERE
	ParentIsBoundedCurve : ('IFC4X3_DEV_738df036.IFCBOUNDEDCURVE' IN TYPEOF(ParentCurve));
END_ENTITY;

8.9.3.22 IfcCompositeCurveSegment

8.9.3.22.1 Semantic definition

8.9.3.22.2 Entity inheritance

8.9.3.22.3 Attributes

8.9.3.22.4 Formal propositions

8.9.3.22.5 Examples

8.9.3.22.6 Formal representation

8.9.3.22.7 References

8.9.3.22.8 Changelog

8.9.3.22.8.1 IFC4

8.9.3.22.8.2 IFC4.3_DEV_738df036

	ENTITY IfcCompositeCurveSegment
	SUPERTYPE OF (ONEOF
	(IfcReparametrisedCompositeCurveSegment))
	SUBTYPE OF (IfcSegment);
	SameSense : IfcBoolean;
	ParentCurve : IfcCurve;
	WHERE
	ParentIsBoundedCurve : ('IFC4X3_DEV_738df036.IFCBOUNDEDCURVE' IN TYPEOF(ParentCurve));
	END_ENTITY;