"Warp" <war### [at] tagpovrayorg> wrote in message
news:3cc2ccd1@news.povray.org...
> ahmet oktar <ahm### [at] yahoocom> wrote:
> > thanks christoph! i can't understand why not for 3.5.
>
>   If you have a slope function defined and you call it with some values,
> what should the function return?
>
yes return a value but it's always constant. It not give slope values in
render time

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