Sub SetFreeformCurveData( _
   ByVal Direction As System.Short, _
   ByVal CurveParameter As System.Double, _
   ByVal Tangent0X As System.Double, _
   ByVal Tangent0Y As System.Double, _
   ByVal Tangent0Z As System.Double, _
   ByVal Tangent1X As System.Double, _
   ByVal Tangent1Y As System.Double, _
   ByVal Tangent1Z As System.Double _
) 

Dim instance As IFeatureManager
Dim Direction As System.Short
Dim CurveParameter As System.Double
Dim Tangent0X As System.Double
Dim Tangent0Y As System.Double
Dim Tangent0Z As System.Double
Dim Tangent1X As System.Double
Dim Tangent1Y As System.Double
Dim Tangent1Z As System.Double
 
instance.SetFreeformCurveData(Direction, CurveParameter, Tangent0X, Tangent0Y, Tangent0Z, Tangent1X, Tangent1Y, Tangent1Z)

void SetFreeformCurveData( 
   System.short Direction,
   System.double CurveParameter,
   System.double Tangent0X,
   System.double Tangent0Y,
   System.double Tangent0Z,
   System.double Tangent1X,
   System.double Tangent1Y,
   System.double Tangent1Z
)

void SetFreeformCurveData( 
&   System.short Direction,
&   System.double CurveParameter,
&   System.double Tangent0X,
&   System.double Tangent0Y,
&   System.double Tangent0Z,
&   System.double Tangent1X,
&   System.double Tangent1Y,
&   System.double Tangent1Z
) 

Parameters

Direction

Direction of the curve; valid values are either 0 or 1

CurveParameter

Where on the face to add the curve; valid values are between 0 and 1

Tangent0X

Tangent vector at one end of curve

Tangent0Y

Tangent vector at one end of curve

Tangent0Z

Tangent vector at one end of curve

Tangent1X

Tangent vector at other end of curve

Tangent1Y

Tangent vector at other end of curve

Tangent1Z

Tangent vector at other end of curve

The SOLIDWORKS API Freeform-related methods are intended to journal the actions performed by an interactive user while creating the feature. Because user interaction is required to create a Freeform feature, fully automating the creation of it is not possible using the SOLIDWORKS API.

The typical steps performed by an interactive user to create a Freeform feature are:

1. Select the face to form. 

2. Add curves on the selected face. Corresponds to IFeatureManager::SetFreeformCurveData.

3. Add points on the curves. Corresponds to IFeatureManager::SetFreeformPointData.

4. Specify boundary continuity. Corresponds to IFeatureManager::SetFreeformBoundaryContinuity.
   
   Interactively pull or push the points to change the shape of the selected face.
    

5. Insert the Freeform feature. Corresponds to this method, IFeatureManager::InsertFreeform2.

Record a macro while interactively creating a Freeform feature, then examine the macro to see the order in which the Freeform-related methods are recorded.