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- Creo (Previous to May 2018)
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- find equation of a spline curve

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May 06, 2010
02:38 PM

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May 06, 2010
02:38 PM

find equation of a spline curve

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 BÃ©zier curves where I would need 4 "control points" but I have not found an option/properties in Pro/E about this.

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May 08, 2010
10:11 AM

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May 08, 2010
10:11 AM

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

May 08, 2010
10:29 AM

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May 08, 2010
10:29 AM

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.