IFC 4.3.1.0 (IFC4X3_ADD1) development

# 8.9.3.35 IfcGradientCurve

AbRV ⓘ

## 8.9.3.35.1 Semantic definition

Gradient curve is a type of curve 3D curve representation that is based on its 2D projection (BaseCurve) and a height deifned by its gradient segments which can be derived from a function that retrieves it from the segment start height, its placement and the ParentCurve instance and the type of the ParentCurve.

The parametrization of the gradient curve is based on the underlying segments of its BaseCurve. The value of the parameter equals the parameter value of BaseCurve.

## 8.9.3.35.5 Formal representation

ENTITY IfcGradientCurve
SUBTYPE OF (IfcCompositeCurve);
BaseCurve : IfcBoundedCurve;
EndPoint : OPTIONAL IfcPlacement;
END_ENTITY;

## 8.9.3.35.6 References

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