IfcCurveOrEdgeCurve

BACnet MVD

#### IfcCurveOrEdgeCurve

Natural language names

| Curve Or Edge Curve

##### Semantic definitions at the type

Type definition

IfcCurveOrEdgeCurve provides the option to either select a geometric curve (IfcCurve and subtypes) within a geometric model, or a curve with associated geometry and coordinates (IfcEdgeCurve) within a topological model.

> HISTORY New select type in IFC2x3.

Select definition

Type | Description
--- | ---
IfcBoundedCurve |
IfcEdgeCurve |

##### Formal representations

XML Specification
`<xs:group name="IfcCurveOrEdgeCurve">
<xs:choice>
<xs:element ref="ifc:IfcBoundedCurve"/>
<xs:element ref="ifc:IfcEdgeCurve"/>
</xs:choice>
</xs:group>
`
EXPRESS Specification
`TYPE IfcCurveOrEdgeCurve = SELECT (
IfcBoundedCurve,
IfcEdgeCurve);
END_TYPE;

EXPRESS-G diagram

`

References: IfcConnectionCurveGeometry

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