DG Kernel Documentation


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Skip Navigation LinksHome Page > API Reference > General Geometry > Curves > 2D > IEllipse_KC Search Documentation


IEllipse_KC Interface

GetA
SetA
GetB
SetB
GetNormalAtAngle
GetNormalAtAngle

If this ellipse defines an edge or otherwise is part of a model, after any modification IGeometry_DG.SetModified() has to be called for the change to appear in 3D view.

Access to properties of an ellipse


HRESULT GetA(double* a)

Parameters

a -[out, retval] The first radius of the ellipse


HRESULT SetA(double a)

Remarks

Modifies the first radius


HRESULT GetB(double* b)

Parameters

b -[out, retval] The second radius of the ellipse


HRESULT SetB(double b)

Remarks:

Modifies the second radius


HRESULT GetPointAtAngle(double angle, double* x, double* y)

Parameters

angle -[out] Polar angle in radiants (angle with direction of x axis)

x, y -[out] The returned point on the ellipse

Remarks:

Returns point on the elipse in direction of the polar angle


HRESULT GetNormalAtAngle(double angle, double* nx, double* ny)

Parameters

angle -[out] Polar angle in radiants (angle with direction of x axis)

x, y -[out] The returned point on the ellipse

Remarks:

Returns normal at point on the elipse in direction of the polar angle. Coordinates of the point can beobtained with the GetPointAtAngle() above