"Alain" <ele### [at] netscape net> wrote in message
news:4270f087$1@news.povray.org...
[...]
> When using the cubic_spline, the first and last points are *only*
> control points. When using b_spline, the start and end "spots"
> are somewhere around the second and second to last points. The
> exact position depend of the position of the first and third
> points for the starting point. Both need at least 4 points.
>
> Alain
My thanks to both you and Shay for explanations.
--
Jim Buddenhagen
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