Thanks for taking a look at it.  I have changed the flat plane to a somewhat
flat heightfield now and added weakened wind sound (not uploaded yet), giving up
on trying a isosurface since it never looked good for this, made a nice etched
or erosion cracked surface though which might be good someplace else.
Far as "technique" goes, not much about it really.  Well I don't think of it
that way anyhow.  The dust clouds are simply a couple cylinders with pieces
differenced out with spheres and the media in them is a blend of 4 patterns
which is then rotated with the clock, as well as phased too.  And of course the
whole thing is moved nearer over the duration.  The sky is yet another media
translated and phased on its own.

Bob

"Sander" <san### [at] stolscom> wrote in message news:388048db@news.povray.org...
> This is very good! Just as I imagined it would be on Mars. Most of the
> techniques you use I don't know, but who knows..?
>
> --
> Regards,
> Sander
>
>
> omniVERSE <inv### [at] aolcom> schreef in berichtnieuws
> 388044c5@news.povray.org...
> > I've started in on a try at making a dust storm on Mars:
> >  http://members.aol.com/persistenceofv/m_ds-ehc.mpg
> > and it's 849KB, a 300 frame 320X240 res. @ 24 fps Mpeg.
> > The turbulent "dust" is media using method 2 in MegaPOV patch.  There is
> ground
> > fog used for the thickened haze nearer ground level which also grows
> thicker and
> > closer as the storm front approaches.
> > It's in dire need of better timing (the dust is very fast for it's size)
> and I
> > believe it only looks good right now if not scrutinized much.  The
> escaping
> > hovercraft has a dust trail which uses a clear container object of course
> for
> > it's media and the usual trouble with fog occurs, that being it no longer
> > remains transparent. So that's a problem to deal with.  To have it moving
> along
> > in the wind direction the cone container is just rotated some over the
> course of
> > time.
> > I'll be adding a height field or isosurface (more likely) so the ground
> isn't a
> > flat plane anymore too.  And with that comes possible use of trace() to
> keep the
> > hover craft from hitting the ground, I hope.
> > Please use your imagination, you'll need it.
> >
> > Bob
> > --
> > // omniVERSE
> > // http://users.aol.com/inversez/
> >
> >
> >
>
>

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