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8.9.3.61 IfcSegment

RV ⓘ
AbV ⓘ

ABSTRACT This definition may not be instantiated

8.9.3.61.1 Semantic definition

Definition of a curve segment with a trimming mechanism built in with a StartPlacement (first point) and SegmentLength (second point).

8.9.3.61.2 Entity inheritance

8.9.3.61.3 Attributes

# Attribute Type Description
IfcRepresentationItem (2)
Click to show 2 hidden inherited attributes
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).

Table 8.9.3.61.A

8.9.3.61.4 Formal representation

ENTITY IfcSegment
ABSTRACT SUPERTYPE OF (ONEOF
(IfcCompositeCurveSegment
,IfcCurveSegment))
SUBTYPE OF (IfcGeometricRepresentationItem);
Transition : IfcTransitionCode;
DERIVE
Dim : IfcDimensionCount := IfcSegmentDim(SELF);
INVERSE
UsingCurves : SET [1:?] OF IfcCompositeCurve FOR Segments;
END_ENTITY;

8.9.3.61.5 References

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3 contributor(s):
Last change: Improve definition split (#876) * bring back headers headers were previously removed by mistake, now bringing them back * add new lines and rename the tag add the word 'short' in it * unify newlines make exactly one newline before and two after the tag * resolving typos Because bringing back headers required to go back in time to previous version, I'm now re-resolving the issues: #861, #860, #856 by ArturTomczak on 7/16/2024, 2:07:28 PM

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8.9.3.61.6 Changelog

8.9.3.61.6.1 IFC4.3_DEV_738df036

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