IfcBoundedCurve

Semantic definitions at the entity

Entity definition

Definition from ISO/CD 10303-42:1992: A bounded curve is a curve of finite arc length with identifiable end points.

NOTE Corresponding STEP name: bounded_curve, only the following subtypes have been incorporated into IFC: polyline as IfcPolyline, trimmed_curve as IfcTrimmedCurve, composite_curve as IfcCompositeCurve. Please refer to ISO/IS 10303-42:1994, p.44 for the final definition of the formal standard.

HISTORY New class in IFC Release 1.0

Informal propositions:

A bounded curve has finite arc length.
A bounded curve has a start point and an end point.

Inherited definitions from supertypes

Entity inheritance

Attribute inheritance

#	Attribute	Type	Cardinality	Description	A
IfcRepresentationItem
IfcGeometricRepresentationItem
IfcCurve
	Dim :=IfcCurveDim(SELF)	IfcDimensionCount	[1:1]	The space dimensionality of this abstract class, defined differently for all subtypes, i.e. for IfcLine, IfcConic and IfcBoundedCurve.	X
IfcBoundedCurve

Formal representations

XSD Specification

 <xs:element name="IfcBoundedCurve" type="ifc:IfcBoundedCurve" abstract="true" substitutionGroup="ifc:IfcCurve" nillable="true"/>

 <xs:complexType name="IfcBoundedCurve" abstract="true">

  <xs:complexContent>

   <xs:extension base="ifc:IfcCurve"/>

  </xs:complexContent>

 </xs:complexType>

EXPRESS Specification


ENTITY IfcBoundedCurve

 ABSTRACT SUPERTYPE OF(ONEOF(IfcCompositeCurve, IfcPolyline, IfcTrimmedCurve))

 SUBTYPE OF (IfcCurve);

END_ENTITY;

 EXPRESS-G diagram