"Anthony D. Baye" <Sha### [at] spamnomorehotmailcom> wrote:
> "MichaelJF" <mi-### [at] t-onlinede> wrote:
> > Le_Forgeron <jgr### [at] freefr> wrote:
> > > Le 03/01/2015 10:13, Warp a écrit :
> > > > Anthony D. Baye <Sha### [at] spamnomorehotmailcom> wrote:
> > > >> So povray's textures are supposed to be 3D, and indeed the patterns are
> > > >> demonstrably three-dimensional, however they do not seem to be sampled for
the
> > > >> inside of an object.
> > > >
> > > >> So I guess my question is: Why not?
> > > >
> > > > POV-Ray renders *surfaces*.
> > > >
> > > Sampling 3D is done with media (and there is three kind of them), inside
> > > surface.
> >
> >
> > Obviously media are the way to go. A good way here may be the use of df3-files.
> > Bill Pokorny has given the link to an interesting visualisation tool just some
> > days ago
> >
> > http://news.povray.org/povray.general/thread/%3C54a2dc7e%241%40news.povray.org%3E/
> >
> > Of course one must generate or obtain the df3-files first. But this is another
> > story...
> >
> > Best regards,
> > Michael
>
> There's a key difference between media and textures. Textures have finishes.
>
> As for Warps glib response about povray only rendering surfaces: that hasn't
> been true since media was added. Subsurface scattering is also b.d. not on the
> surface.  Why can't textures be sampled for the interior as well?
>
> A.D.B.

Maybe I misunderstood what you meant. Can you show me an example of such a
texture?

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