"ingo" <ing### [at] tagpovrayorg> wrote in message
news:Xns### [at] povrayorg...
> in news:3e3e47f1@news.povray.org A J Le Couteur Bisson wrote:
>
> > Oh, and I didn't know if the .df3 interpolation would provide a
> > suitable gradient for the iso-surface calculations to work properly.
> > Has anyone tried this?
> >
>
> Below is a <snip>      :)

Thanks, I'll give it a go.

Andy

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