Get Spline's Parameters Example (VB.NET)

This example shows how to get spline parameterization data for a selected sketch.

'-----------------------------------------------
' Preconditions:
' 1. Open a new part document.
' 2. Open an Immediate Window.
'
' Postconditions:
' 1. Creates and selects a sketch with a spline.
' 2. Inspect the Immediate Window to view the spline's parameterization data.
'-----------------------------------------------
Imports SolidWorks.Interop.sldworks
Imports SolidWorks.Interop.swconst
Imports System
Imports System.Diagnostics

Partial Class SolidWorksMacro

    Dim swModel As ModelDoc2
    Dim swSelMgr As SelectionMgr
    Dim swFeat As Feature
    Dim swSketch As Sketch
    Dim swSplineParaData As SplineParamData
    Dim varCtrlPoints As Object
    Dim varKnotPoints As Object
    Dim boolStatus As Boolean
    Dim i As Integer
    Dim swSketchMgr As SketchManager
    Dim arrCtrlPts(17) As Double
    Dim arrKnotPts(9) As Double
    Dim varSeg As Object


    Sub main()


        swModel = swApp.ActiveDoc
        swSketchMgr = swModel.SketchManager
        swSplineParaData = swSketchMgr.CreateSplineParamData

        swSplineParaData.Dimension = 3
        swSplineParaData.Order = 4
        swSplineParaData.Periodic = 0
        swSplineParaData.ControlPointsCount = 6

        arrCtrlPts(0) = -0.0508
        arrCtrlPts(1) = 0.0254
        arrCtrlPts(2) = 0

        arrCtrlPts(3) = -0.0467151082143202
        arrCtrlPts(4) = 0.0102856278912272
        arrCtrlPts(5) = 0

        arrCtrlPts(6) = -0.00128736279059822
        arrCtrlPts(7) = -0.0242718277078294
        arrCtrlPts(8) = 0

        arrCtrlPts(9) = 0.0314466792227059
        arrCtrlPts(10) = 0.0612396847740687
        arrCtrlPts(11) = 0

        arrCtrlPts(12) = 0.060476660388647
        arrCtrlPts(13) = -0.0433198423870343
        arrCtrlPts(14) = 0

        arrCtrlPts(15) = 0.0762
        arrCtrlPts(16) = 0.0254
        arrCtrlPts(17) = 0

        boolStatus = swSplineParaData.SetControlPoints(arrCtrlPts)

        arrKnotPts(0) = 0
        arrKnotPts(1) = 0
        arrKnotPts(2) = 0
        arrKnotPts(3) = 0
        arrKnotPts(4) = 0.362665828616751
        arrKnotPts(5) = 0.575110552411167
        arrKnotPts(6) = 1
        arrKnotPts(7) = 1
        arrKnotPts(8) = 1
        arrKnotPts(9) = 1
        boolStatus = swSplineParaData.SetKnotPoints(arrKnotPts)
        varSeg = swSketchMgr.CreateSplinesByEqnParams2(swSplineParaData)

        swSketchMgr.InsertSketch(True)

        boolStatus = swModel.Extension.SelectByID2("Sketch1", "SKETCH", 0, 0, 0, False, 0, Nothing, swSelectOption_e.swSelectOptionDefault)

        swSelMgr = swModel.SelectionManager
        swFeat = swSelMgr.GetSelectedObject6(1, -1)
        swSketch = swFeat.GetSpecificFeature2
        Debug.Print(swFeat.Name)
        Debug.Print("")

        swSplineParaData = swSketch.GetSplineParams4(True)

        Debug.Print("The dimension is: " & swSplineParaData.Dimension)
        Debug.Print("The order is: " & swSplineParaData.Order)
        Debug.Print("The periodicity is: " & swSplineParaData.Periodic)
        Debug.Print("The control point count is: " & swSplineParaData.ControlPointsCount)
        boolStatus = swSplineParaData.GetControlPoints(varCtrlPoints)
        Debug.Print("Control Points:")
        For i = 0 To UBound(varCtrlPoints)
            Debug.Print(varCtrlPoints(i))

        Next i
        Debug.Print("The knot point count is: " & swSplineParaData.KnotPointsCount)
        boolStatus = swSplineParaData.GetKnotPoints(varKnotPoints)
        Debug.Print("Knot Points:")
        For i = 0 To UBound(varKnotPoints)
            Debug.Print(varKnotPoints(i))

        Next i
        Debug.Print("The color is: " & swSplineParaData.Color)
        Debug.Print("The line style is: " & swSplineParaData.LineStyle)
        Debug.Print("The line width is: " & swSplineParaData.LineWidth)
        Debug.Print("The layer is: " & swSplineParaData.Layer)
        Debug.Print("The layer override is: " & swSplineParaData.LayerOverride)

    End Sub

  
    Public swApp As SldWorks


End Class