"Thomas de Groot" <t.d### [at] internlDOTnet> schreef in bericht 
news:47c6a85e$1@news.povray.org...
>
> "Nicolas Alvarez" <nic### [at] gmailisthebestcom> schreef in 
> bericht news:47c6a742$1@news.povray.org...
>>
>> Just a minor hint: It would be much easier to debug the basic shape if 
>> you remove any kind of noise or turbulence.
>

Without the noise, the isosurface renders correctly...

However, when you add    + f_rough(x, y, z)    to the isosurface function, 
the problem appears again. For reasons I do not understand, the noise 
appears not to influence the inside of the flutes, except for the top 
hemisphere. I tried to put flute and top hemisphere inside a min() function 
(union equivalent) but that makes not any difference.

Thomas

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