Inserts a knot a number of times. It is added at the parameter corresponding to the projection of the given point on the curve. The insertion does not affect the shape of the curve.

'Declaration
 
Public Overloads Function InsertKnot( _
   ByVal ctrlPoint As Point3D, _
   ByVal r As Integer _
) As Boolean

public bool InsertKnot( 
   Point3D ctrlPoint,
   int r
)