thanks all - that'll do it

Mick

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"Jetlag" <bga### [at] microsoftcom> wrote in message
news:38bede35@news.povray.org...
> > Can anyone give me a formula for a vertical isosurface cone shape?
> >
> > Mick
>
> This is what I came up with:
>
> isosurface {
>   function { x^2 + z^2 - (y-1)^2/2 }
>   contained_by { box { -<sqrt(2), 1, sqrt(2)>, <sqrt(2), 1, sqrt(2)> } }
>   threshold 0
>
>   pigment { rgb 1 }
> }
>
>
>

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