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"Vincent LE CHEVALIER" <gal### [at] libertysurf fr> schreef in
bericht news:4405babf@news.povray.org...
> The problematic code is :
>
> [...]
> isosurface {
> function {y - P(x, 0, 1-z)}
> [...]
>
> which you can replace with
>
> [...]
> isosurface {
> function {y - P(x, 0, -z)}
> [...]
>
> which works fine :-) Amazing what a nasty char can do...
>
> The explanation is that you just want to reverse the z-axis to be
> coherent with the height field. By writing P(x, 0, 1-z) not only do you
> reverse the z axis, but you translate it as well...
>
> Hope this helps
>
oh-oh! A little error in Mike's tutorial, eh? :-)
I shall try this out! Thanks a lot!
Thomas
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