Create Equation-driven Curve (VBA)

This example shows how to create and modify an equation-driven curve.

'---------------------------------------------------------------

' Preconditions:  Part document is open in SolidWorks.

'

' Postconditions:

' 1. A 2D sketch is created, and an equation spline of a

'    sine curve is created.

' 2. After the break point, the curve is edited

'    and a cosine curve is created.

'----------------------------------------------------------------

Option Explicit

 

Dim swApp As SldWorks.SldWorks

Dim swModel As SldWorks.ModelDoc2

Dim swExt As SldWorks.ModelDocExtension

Dim swSelMgr As SldWorks.SelectionMgr

Dim boolstatus As Boolean

Dim y As String

Dim r1 As Double

Dim r2 As Double

Dim rad As Boolean

Dim ang As Double

Dim xOff As Double, yOff As Double

Dim LockStart As Boolean, LockEnd As Boolean

 

Sub main()

 

Set swApp = Application.SldWorks

Set swModel = swApp.ActiveDoc

Set swExt = swModel.Extension

Set swSelMgr = swModel.SelectionManager

 

boolstatus = swExt.SelectByID2("Front Plane", "PLANE", 0, 0, 0, False, 0, Nothing, 0)

swModel.SketchManager.InsertSketch True

swModel.ClearSelection2 True

 

Dim skSegment As SketchSegment

Set skSegment = swModel.SketchManager.CreateEquationSpline2("sin(x)", "", "", "0", "6.28", false, 0, 0.002, 0.002, false, false)

swModel.ViewZoomtofit2

 

Stop

 

Dim skSpline As SketchSpline

Set skSpline = skSegment

Call skSpline.GetEquationParameters(y, r1, r2, rad, ang, xOff, yOff, LockStart, LockEnd)

 

Debug.Print "y: " & y

Debug.Print "range start: " & r1

Debug.Print "range end: " & r2

Debug.Print "radian?: " & rad

Debug.Print "ang offset: " & ang

Debug.Print "x offset: " & xOff

Debug.Print "y offset: " & yOff

Debug.Print "Lock start: " & LockStart

Debug.Print "Lock end: " & LockEnd

Debug.Print "-----------------------------"

 

'Change spline to a cosine curve

y = "cos(x)"

Call skSpline.SetEquationParameters(y, r1, r2, rad, ang, xOff, yOff, LockStart, LockEnd)

 

End Sub