Not to clutter up answers of answers, just some points here:
- media in water: You are right, I didn't think of that really...
- foam: Hmm, have to experiment some more I guess. Should be possible one
way or another.
- my sea: thanks :-) I was not entirely satisfied though. I think your use
of the declarations in much more neater, and for the swell I used the old
well-trodden path of scaling the whole isosurface. Ugly, in terms of
computing ;->  So, back to the drawing board for me...
- Erasmus: You're welcome! Use what you feel necessary to use. Exchange of
data is there to be used, isn't it? I think Maas waters are a little more
muddier than the North Sea, though. There is that much more gray silt in
suspension that makes the transparency almost disappear. In contrast, the
North Sea seems almost a greenish clear liquid. But much depends also on the
the reflection of the sky on the water.


'maternelle'!)

Thomas

"Marc Jacquier" <jac### [at] wanadoofr> schreef in bericht
news:3e6b096b$1@news.povray.org...
>

news:
> 3e6afc19@news.povray.org...
>
> > 1. It is good, structurally.
> Thanks, I hoped so :) though I forgot to say that it is made with and for
> Moray 3.5 and can't be loaded in Moray 3.3 I think.
> > 2. Why do you make the isosurface 'hollow'? A water body is solid,
> although
> > somewhat transparent.
> The important word here is "somewhat". I want to have a media
> (absorption+scattering) working in water.
> For that I had to make the media container hollow. (see POV doc 6.5.9.5
and
> 6.6.2)
> You can notice that my water surface has no active color (filter 0
transmit
> 1), just specular and fresnel reflection.
> > 3. To be sure that the depths are dark, I usually add a black box
> > (literally!) at the base of the water, to be sure no light comes from
> below.
> > It is quite effective I found.
> Yes, I use a plane for the same purpose :)
> >
> > I have experimented with white foam at the crests of the waves, by using
a
> > slope/altitude parameter in the material, but I found that quite tricky
to
> > do and not entirely satisfactory. Have you tried?
> I had a try with the same results :(
> I experimented biased slope vector to fake waves displacement (foam forms
at
> the lip of the wave but as this one progresses, the foam stays on the
> backside of the wave) but it didn't work well.
>
> I like your sea, I have a feeling of swelly water with a remote or fallen
> wind.
> For my own I prefer predeclaring f_ridged_mf parameter to have an easier
> access..
> May be I use some of your sea features in my *maybe* IRTC entry for
> "Achitecture" round: I'm working on a modelisation of Erasmus brug in
> Rotterdam, so I'll could turn your North Sea into a Maas.
>
> Tot ziens
> Marc
>
>
>

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