Hide Table of Contents

Set Spline Tangency and Curvature Controls Example (VBA)

This example show how to set a spline's tangency and curvature controls.

' Preconditions:
' 1. Open a part containing a sketch of a spline.
' 2. Select the spline in the graphics area.
' 3. Open the Immediate window.
' Postconditions:
' 1. Sets the tangency and curvature control
'    for the specified points.
' 2. Examine the Immediate window.
Option Explicit
Dim swApp As SldWorks.SldWorks
Dim swModel As SldWorks.ModelDoc2
Dim swSelMgr As SldWorks.SelectionMgr
Dim swModelDocExt As SldWorks.ModelDocExtension
Dim swSpline As SldWorks.SketchSpline
Dim swSplineH1 As SldWorks.SplineHandle
Dim swSplineH2 As SldWorks.SplineHandle
Dim boolstatus As Boolean
Sub main()
    Set swApp = Application.SldWorks
    Set swModel = swApp.ActiveDoc
    Set swSelMgr = swModel.SelectionManager
    Set swModelDocExt = swModel.Extension
    boolstatus = swModelDocExt.SelectByID2("Spline1", "SKETCHSEGMENT", 0, 0, 0, False, 0, Nothing, 0)
    Set swSpline = swSelMgr.GetSelectedObject6(1, 0)
    ' Set tangency control; substitute coordinates of a point in your spline
    Set swSplineH1 = swSpline.AddTangencyControl(-48.92 / 1000, -5.07 / 1000, 0)
    Debug.Print "Spline point number: " & swSplineH1.SplinePointNumber()
    ' Add curvature control; substitute coordinates of a point in your spline
    Set swSplineH2 = swSpline.AddCurvatureControl(6.3 / 1000, 15.075 / 1000, 0)
    Debug.Print "Spline point number: " & swSplineH2.SplinePointNumber()

    ' Reset all handles    
    ' Relax spline
End Sub

Provide feedback on this topic

SOLIDWORKS welcomes your feedback concerning the presentation, accuracy, and thoroughness of the documentation. Use the form below to send your comments and suggestions about this topic directly to our documentation team. The documentation team cannot answer technical support questions. Click here for information about technical support.

* Required

Subject:   Feedback on Help Topics
Page:   Set Spline Tangency and Curvature Controls Example (VBA)
*   I acknowledge I have read and I hereby accept the privacy policy under which my Personal Data will be used by Dassault Systèmes

Print Topic

Select the scope of content to print:


We have detected you are using a browser version older than Internet Explorer 7. For optimized display, we suggest upgrading your browser to Internet Explorer 7 or newer.

 Never show this message again

Web Help Content Version: API Help (English only) 2017 SP05

To disable Web help from within SOLIDWORKS and use local help instead, click Help > Use SOLIDWORKS Web Help.

To report problems encountered with the Web help interface and search, contact your local support representative. To provide feedback on individual help topics, use the “Feedback on this topic” link on the individual topic page.