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A
Anonymous
May 6, 2010
Question

find equation of a spline curve

  • May 6, 2010
  • 1 reply
  • 2545 views
Hello, I've created a spline curve that is used to make an extrusion. I just drew the spline curve from some point A to point B and this curve is exactly what I want. Does Pro/E have a way to obtain the equation of this spline curve? I've heard of Cubic Bézier curves where I would need 4 "control points" but I have not found an option/properties in Pro/E about this.

    1 reply

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    DavidButz1-Visitor
    1-Visitor
    May 8, 2010
    Antonio, I think the simple answer is No (at least as far as I am aware). However, I am intrigued by your question, and it raises two of my own. 1. Why do you want to do this? (Maybe there is some other way of doing what you are trying to do.) 2. You mentioned only two points (A&B). Do you have some tangency or other constraints at the ends? If not, of course, it's just a straight line. Finally, a general suggestion. If you have other software which can derive your desired equation from a series of points, you can create Datum Points on your curve and export their coordinates to whatever equation extraction software you might have. David
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    DavidButz1-Visitor
    1-Visitor
    May 8, 2010
    One more suggestion. If you export your model into a few of the various possible formats using SaveAs (look at Neutral and STEP, for example) and open the resulting files in Wordpad, you will see some curve abstraction information that might be useful to you.
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