International Organization for Standardization

ISO 16739-1:2024(E)

8.9.2.6 IfcCurveOnSurface

8.9.2.6.1 Semantic definition

The IfcCurveOnSurface enables the choice of curve types on parameteric surface.

The curve on surface select type collects these curves together for reference purposes.

8.9.2.6.2 Type values

Type
IfcCompositeCurveOnSurface
IfcPcurve
IfcSurfaceCurve
Table 8.9.2.6.A

8.9.2.6.3 Formal representation

TYPE IfcCurveOnSurface = SELECT
	(IfcCompositeCurveOnSurface
	,IfcPcurve
	,IfcSurfaceCurve);
END_TYPE;

8.9.2.6.4 References