AnsweredAssumed Answered

Set Style spline in vba

Question asked by Paul Rogers on Dec 20, 2018
Latest reply on Dec 20, 2018 by Simon Turner

Hi all,


I use a vba script to plot a B-spline through a line of points to create a curve in SW2014. I've now upgraded to a SW2018 and have been trying to use the Style Spline option instead, which would be far better for my application and would save me having to use a rather complex regularization algorithm . I have seen examples of vba scripts to find the Style Spline degree (3,5,7) but not a way to set the degree. I've tried the usual trick of recording a macro but the resulting script is of no help.


More details of code I am currently using (a 10 x 10 grid of points has already been plotted, the code below creates a spline through each row):


'-----Curve generation-----

    Set Part = swApp.ActiveDoc


    Part.ClearSelection2 True


           For a = 1 To xColumns


                m = 1 * a

                f = (xColumns * yRows) - (xColumns - a)

                'MsgBox ("End point of this column is " & f)


                       For j = m To f

                          If m < (f + 1) Then

                             boolstatus = Part.Extension.SelectByID2("Point" & m & "@3DSketch1", "EXTSKETCHPOINT", 0, 0, 0, True, 1, Nothing, 0)

                            ' MsgBox ("selected point " & m)

                             m = m + xColumns

                           End If


                        Next j


               Part.Insert3DSplineCurve False

                'MsgBox ("created curve " & q)

              Next a

'----- End of curve generation-----


(The code after this creates a loft throught the splines to create a surface).


Any help on this would be very greatfully received,


Many thanks,



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