Function CreateSplinesByEqnParams( _
   ByVal Parameters As Object _
) As Object

Dim instance As ISketchManager
Dim Parameters As Object
Dim value As Object
 
value = instance.CreateSplinesByEqnParams(Parameters)

object CreateSplinesByEqnParams( 
   object Parameters
)

Object^ CreateSplinesByEqnParams( 
&   Object^ Parameters
) 

Parameters

Parameters

Array containing an array of doubles to use in creating the spline (see Remarks)

Return Value

The Properties array contains four longs (placed in the first four doubles in the array):

• Dimension

• Order

• Number of Control Points

• Periodicity ( true or false)

The Knots array contains doubles with (Number of Control Points + Order) elements.

The size of the ControlPoints array is based upon the curve dimension.

• Dimension = 2 then each Control Point is an array of 2 doubles ( x, y )

• Dimension = 3 then each Control Point is an array of 3 doubles ( x, y, z)

• Dimension = 4 then each Control Point is an array of 4 doubles ( x, y, z, w ) where w = weight

The parameters are provided as three arrays.

Pass the control point coordinates to this routine in sketch space. The Z value is  interpreted as 0. In certain situations, you must transform your B-curve parameters to sketch space using ISketch::ModelToSketchTransform.

NOTE: If the spline being generated is a closed spline, then it must be flagged as periodic. If the data passed to this method does not generate a G1 continuous spline, then it creates multiple G1 continuous spline segments.

This method does not work with ISketchManager::AddToDB or ISketchManager::DisplayWhenAdded. It always adds the spline directly to the database (as if ISketchManager::AddToDB(True) is in effect), and you must redraw your document window to see the entities that you added (as if ISketchManager::DisplayWhenAdded(False) is in effect).

To create 3D splines, see IModelDoc2::InsertCurveFilePoint and related functions.