"Warp" <war### [at] tagpovrayorg> wrote:
> > because, if you do a linear-interpolation between the two points,
> > it is quite uncertain, that the way-on-spline is shorter ...   No?
>
>   A line is the shortest distance between two points. This means that any
> other path is longer. Thus the spline can never be shorter than the linear
> estimate. As a spline seldom consists of straight lines (except for the
> linear spline), it's always longer than the linear estimate.

seems we're telling each other to be right ...

Post a reply to this message