IFC 4.3.0.1 (IFC4X3) development

8.9.2.8 IfcKnotType

8.9.2.8.1 Semantic definition

The IfcKnotType indicates the particular form of b-spline knots.

8.9.2.8.2 Type values

Type Description
PIECEWISE_BEZIER_KNOTS

The form of knots appropriate for a piecewise Bezier curve.

QUASI_UNIFORM_KNOTS

The form of knots appropriate for a quasi-uniform B-spline curve.

UNIFORM_KNOTS

The form of knots appropriate for a uniform B-spline curve.

UNSPECIFIED

The type of knots is not specified. This includes the case of non uniform knots.

Table 8.9.2.8.A

8.9.2.8.3 Formal representation

TYPE IfcKnotType = ENUMERATION OF
	(PIECEWISE_BEZIER_KNOTS
	,QUASI_UNIFORM_KNOTS
	,UNIFORM_KNOTS
	,UNSPECIFIED);
END_TYPE;

8.9.2.8.4 References

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