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ODA IFC SDK
IfcSpiral Class
Syntax
C++
class IfcSpiral : public IfcCurve;

Spirals are curves that revolve around a point while increasing its length. In general, these curves are parameterized in the following way:

x = r(φ) cosφ y = r(φ) sinφ

In the case of the clothoid and higher order transition spirals, the parametrization is:

x = ∫cos &Theta dl y = ∫sin &Theta dl

 

where &Theta is the deflection or bearing angle and dl is the differential of the spiral length.

This definition may not be instantiated.

OdIfc4x3__IfcSpiralOdIfc4x3__IfcSpiralOdIfc4x3__IfcSpiralOdIfc4x3__IfcSpiralOdIfc4x3__IfcSpiralOdIfc4x3__IfcSpiralOdIfc4x3__IfcSpiralOdIfc4x3__IfcSpiralOdIfc4x3__IfcSpiralOdIfc4x3__IfcSpiralOdIfc4x3__IfcSpiralOdIfc4x3__IfcSpiralOdIfc4x3__IfcSpiralOdIfc4x3__IfcSpiral

File: IfcSpiralAutoImpl.h 

Namespace: OdIfc4x3 

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