max_gradient is an issue with isosurfaces only, with standard HF's (which I
suspect are meshes) it is not.  A parametric mesh has no such limitations
and can be set up as y=f(x,z) very easily (memory use is another matter,
though).  You can still verify traces.

"Thorsten Froehlich" <tho### [at] trfde> wrote in message
news:3d613609@news.povray.org...
> In article <3d6121af@news.povray.org> , "David Wallace"
> <dar### [at] earthlinknet> wrote:
>
> > If you define an isosurface using a known y=f(x,z) function and
> > trace() gives you an answer inconsistent with a verifiable calculation,
> > that's a bug and needs to be reported to the POV Team.
>
> No, it is not a bug.  The max_gradient setting is simply wrong.

>
>     Thorsten
>
> ____________________________________________________
> Thorsten Froehlich, Duisburg, Germany
> e-mail: tho### [at] trfde
>
> Visit POV-Ray on the web: http://mac.povray.org

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