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ICurve Interface

GetPoint

IsClosed

SetClosed

GetLength

The interface is implemented by geometric curve objects. It gives uniform access to different types of curves and exposes only its basic properties, This interface is likely to be expanded in future releases.

See also Free-form curves, Pipes sample,  Interface List

HRESULT GetPoint(double t, double* x, double* y, double* z)

Parameters

t - [in] Parameter identifying position of a point on the curve.

x,y,z - [out] returned coordinates of the point

Remarks:

Returns coordinates of a point on the curve, which is identified by parameter of the curve. Each specific curve has own way of mapping of some range of real numbers to points of curve. The range depemds on the specific type of curve, but in most cases it is [0, 1] range.

HRESULT IsClosed(VARIANT_BOOL *closed)

Parameters

closed - [out] The returned Closed property, which indicates whether the line is a closed loop or has ends

Remarks:

The method returns the current state of Closed property, which indicates whether the line is a closed loop or has ends

HRESULT SetClosed(VARIANT_BOOL closed)

Parameters

closed - [in] Sets Closed property of the line

Remarks:

Closed property is often determined by its underlying geometry defined by other interfaces. In such cases this method will have no effect, but calling it is not an error. In some cases like Free Form Curves&  geometry can be interpreted either way and value of this property will be used by the software to determine which is the case.

HRESULT GetLength(double* length)

Parameters

length - [out, retval] The returned length of the curve

Remarks: