polynomial from bspline

I created a spline interpolating points.
I need to express the curve as a polynomial
y=ax3 + bx2 .....
possibly parametrized between 0 and 1.
Is it possible to compute the coefficient from my Geom_BSplineCurve object?
Thanks a lot
Anna

akbari1358_31365's picture

Hi anna!
What are you talking about?!
You know it's not possible to express a BSpline in terms of polynomaial as you like.
Sinecerely yours A.Akbari