Gets the number of distinct knots on a curve. The multiplicity of a knot is not taken into account.

Note: This command uses output arguments. C# and some scripting languages (such as JScript, PerlScript and Python) don't support arguments passed by reference so you need to use the best workaround for your situation:

For scripting languages this command returns an ISIVTCollection which you can use to get the output arguments.

For C# you can use the XSIApplication.ExecuteCommand method to call this command. ExecuteCommand packs the output arguments into a C# System.Object containing an Array of the output arguments (see Calling Commands from C#).

GetNumberOfKnots( InputObj, [NbItems] );

Parameter	Type	Description
InputObj	String	Curve to evaluate.
NbItems	Integer	Returns the number of knots.

VBScript Example

'This example shows how to get the number of distinct knots from a curve

newscene

dim nbKnots

'Create a standard spiral with 16 subdivisions.

CreatePrim "Spiral", "NurbsCurve"	

' Get the number of knots. 

GetNumberOfKnots "Spiral", nbKnots 

logmessage "Number of Knots: " & nbKnots

GetCurveLength GetCurvePercentageAtKnotIndex EvaluateCurveAt