8.9.2.3 IfcBSplineCurveForm

8.9.2.3.1 Semantic definition

The IfcBSplineCurveForm represents a part of a curve of some sppecific form.

Type	Description
`CIRCULAR_ARC`	An arc of a circle, or a complete circle represented by a B-spline curve.
`ELLIPTIC_ARC`	An arc of an ellipse, or a complete ellipse, represented by a B-spline curve.
`HYPERBOLIC_ARC`	An arc of finite length of one branch of a hyperbola represented by a B-spline curve.
`PARABOLIC_ARC`	An arc of finite length of a parabola represented by a B-spline curve.
`POLYLINE_FORM`	A connected sequence of line segments represented by degree 1 B-spline basis functions.
`UNSPECIFIED`	A B-spline curve for which no particular form is specified.

Table 8.9.2.3.A

 TYPE IfcBSplineCurveForm = ENUMERATION OF
	(CIRCULAR_ARC
	,ELLIPTIC_ARC
	,HYPERBOLIC_ARC
	,PARABOLIC_ARC
	,POLYLINE_FORM
	,UNSPECIFIED);
END_TYPE;

	TYPE IfcBSplineCurveForm = ENUMERATION OF
	(CIRCULAR_ARC
	,ELLIPTIC_ARC
	,HYPERBOLIC_ARC
	,PARABOLIC_ARC
	,POLYLINE_FORM
	,UNSPECIFIED);
	END_TYPE;