Hello,

i am using solidworks 2010.

i draw a parabola and i need to get points from the parabola, and i want to get avery some delta (like 0.5 mm) xyz point.

for spline and curve i use this macro: ( this don't work on parabola)

Dim swApp As SldWorks.SldWorks
Dim swModel As SldWorks.ModelDoc2
Dim swSelMgr As SldWorks.SelectionMgr
Dim swSketchSeg As SldWorks.SketchSegment
Dim swCurve As SldWorks.Curve

Sub main()

    Set swApp = Application.SldWorks
   
    Set swModel = swApp.ActiveDoc
   
    Set swSelMgr = swModel.SelectionManager
   
    Set swSketchSeg = swSelMgr.GetSelectedObject6(1, -1)
   
    Set swCurve = swSketchSeg.GetCurve
       
    Dim vPts As Variant
   
    vPts = SplitCurveByChord(swCurve, 0.05)
           
    swModel.ClearSelection2 True
   
    swModel.SketchManager.Insert3DSketch True
   
    Dim i As Integer
   
    For i = 0 To (UBound(vPts) + 1) / 3 - 1
   
        swModel.SketchManager.CreatePoint vPts(i * 3), vPts(i * 3 + 1), vPts(i * 3 + 2)
       
    Next
   
    swModel.SketchManager.Insert3DSketch True
           
End Sub

Function SplitCurveByChord(swCurve As SldWorks.Curve, chordLength As Double) As Variant
   
    Dim swCurveSpline As SldWorks.Curve
    Dim nStartParam As Double
    Dim nEndParam As Double
    Dim bIsClosed As Boolean
    Dim bIsPeriodic As Boolean
   
    Dim incr As Double
    Dim i As Integer
    Dim vParam As Variant
   
    Dim retVal() As Double
       
    swCurve.GetEndParams nStartParam, nEndParam, bIsClosed, bIsPeriodic
   
    Dim curveLength As Double
    curveLength = swCurve.GetLength3(nStartParam, nEndParam)
   
    ReDim retVal(CInt(curveLength / chordLength) * 3 - 1)
   
    incr = (nEndParam - nStartParam) / (curveLength / chordLength)
   
    For i = 0 To (UBound(retVal) + 1) / 3 - 1
   
        vParam = swCurve.Evaluate2(nStartParam + i * incr, 1)
       
        retVal(i * 3) = vParam(0)
        retVal(i * 3 + 1) = vParam(1)
        retVal(i * 3 + 2) = vParam(2)
       
    Next
   
    SplitCurveByChord = retVal
   
End Function

thanks for the help.