On Fri, 11 Apr 2003 09:43:45 +0200, Mark Weyer
<wey### [at] informatikuni-freiburgde> wrote:
> > As it is stated there only linera_spline is ineterpolation. b_spline and
> > cubic_spline is aproximation.
>
> To my knowledge cubic splines do have the interpolation property.

The problem is that cubic spline name seems applied to whole family of curves. I
do not remember exact implementation in sphere_sweep but indeed usually it goes
through endpoints so it can be interpolation as well.

ABX

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