Equation from a drawn curve

[satyasrinivas]

Hi

I defined a spline in Proe using 5 points. Now is it possible to obtain the exact equation of the spline just defined in terms of X, Y, Z. I am doing some basic geometric modeling and I would like to extract the equations after I draw them in proe.

thanks in advance

 

[cadcamguy]

you might give this place a try

http://physicsmathforums.com/

 

[jeff4136]

What's "basic geometric modeling"?
Why do you want the equations or expect to do with them?

To the best of my knowledge you'll have to export a curve
and parse the curve's defining parameters (knot vector, CV's,
etc.) from the neutral file. The equations for NURBS (B-Splines,
Beziers, etc.) can be found on the web with a little searching.
They will have a form something like y=4x^3+2x^2+3x-2 ... (you
are expecting an algebraic expression similar to a circle, ellipse,
helix, etc. definition?).

(search for a document: "NURB Curves: A Guide for the Uninitiated")