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But doesn't every cloud had Silver_Lining by default?
"Richard Morton" <ric### [at] hotmail removethisbitcom> wrote in message
news:39A3E0F8.9A1EC666@hotmail.removethisbit.com...
> and please note that Silver_Lining is a mandatory parameter for all cloud
code.
>
> Ian Witham wrote:
>
> > Hi -- haven't got time to test this but it should work
> >
> > cloud {<0, 1000, 0>
> > pigment {rgb 1}
> > fluffiness 5
> > looks_like_rain 0
> > }
> >
> > --
> >
> > Ian
> >
> > Inkwell: Ian's Homepage
> > http://www.topcities.com/cartoon/inkwell/index.htm
> > "Mick Hazelgrove" <mic### [at] mhazelgrovefsnetcouk> wrote in message
> > news:39a26f57@news.povray.org...
> > > I have spent months trying to write realistic cloud code. All my
attempts
> > > have come to nothing. The nearest thing to realistic clouds in Pov
and
> > > possibly the only way to do it well, is Mike Andrews clouds code. So I
> > guess
> > > I shall be working with that for a while. If anyone has any other
useful
> > and
> > > workable suggestions, now's yer chance ter get 'em off yer chest!
> > >
> > > Mick
> > >
> > >
>
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"Ian Witham" <ian### [at] hotmailcom> wrote in message
news:39a3920a@news.povray.org...
> But doesn't every cloud had Silver_Lining by default?
Nope - however, every silver_lining does have a cloud.
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WOW! Someone still finds these clouds useful? Pardon me while I pick
myself up off the floor. :-)
I haven't had time to do much rendering recently (ie the last six months
or so) and my cloud studies have seriously fallen by the wayside. I
almost produced an entry for the IRTC this time, the basic scene was
finished a month ago, but then things got busy and I haven't touched it
since. I'll keep it on my active projects list, but I don't know if I'll
ever get it to a 'finished' state ...
I've experimented, with very limited success, in producing single
cumulus/thunder head/storm cell cloud forms using isosurfaces. Nothing
very useful or workable I'm afraid. I still think about the problem when
I see a nice sunset or towering rain cloud, trying to imagine how to
produce the form and sheer variation in cloud texture that you see, but
ideas have been few and far between.
Please don't give up on the idea, maybe just put it on the back burner
for a few months. I'm sure the capability is there, it just needs
teasing out of obscurity ...
Bye for now,
Mike Andrews.
Mick Hazelgrove wrote:
>
> I have spent months trying to write realistic cloud code. All my attempts
> have come to nothing. The nearest thing to realistic clouds in Pov and
> possibly the only way to do it well, is Mike Andrews clouds code. So I guess
> I shall be working with that for a while. If anyone has any other useful and
> workable suggestions, now's yer chance ter get 'em off yer chest!
>
> Mick
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In article <39A3BBC7.2333BA49@reading.ac.uk>, Michael Andrews
<M.C### [at] readingacuk> wrote:
> I still think about the problem when I see a nice sunset or towering
> rain cloud, trying to imagine how to produce the form and sheer
> variation in cloud texture that you see, but ideas have been few and
> far between.
Maybe an atmospheric particle system of some sort would be useful...I
don't know how you would do it, though. Maybe high drag, a couple
emitters per cloud with different temperatures and directions...
--
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/
<><
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Chris Huff wrote:
>
> Maybe an atmospheric particle system of some sort would be useful...I
> don't know how you would do it, though. Maybe high drag, a couple
> emitters per cloud with different temperatures and directions...
>
I don't think that would suffice for a good cloud simulation, because cloud
particles are not emitted from a source but come into existence everywere in the
cloud. You would probably have to include the condensation and evaporation(?)
of water in your system.
Christoph
--
Christoph Hormann <chr### [at] gmxde>
Homepage: http://www.schunter.etc.tu-bs.de/~chris/
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In article <39A56246.446814D4@schunter.etc.tu-bs.de>,
chr### [at] gmxde wrote:
> I don't think that would suffice for a good cloud simulation, because
> cloud particles are not emitted from a source but come into existence
> everywere in the cloud. You would probably have to include the
> condensation and evaporation(?) of water in your system.
First: the goal wouldn't be to simulate the formation of clouds, but to
simulate the shape and texture. This should be a bit
simpler...convection and wind should be enough.
Second: in most of my particle systems, including my patch, you can
define an area for each emitter, instead of just a point.
--
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/
<><
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Chris Huff schrieb:
>
> First: the goal wouldn't be to simulate the formation of clouds, but to
> simulate the shape and texture. This should be a bit
> simpler...convection and wind should be enough.
> Second: in most of my particle systems, including my patch, you can
> define an area for each emitter, instead of just a point.
>
Oh sorry, didn't know that :-)
I't probably mainly a matter of proper placement of the paticle emitters.
BTW, do your paticles also vanish ? (like when a cloud disintegrates)
that's probably not that important when simulating heavy new clouds but could be
useful for clouds thinning out because of less humidity.
Christoph
--
Christoph Hormann <chr### [at] gmxde>
Homepage: http://www.schunter.etc.tu-bs.de/~chris/
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In article <39A569ED.864BBB10@schunter.etc.tu-bs.de>,
chr### [at] gmxde wrote:
> BTW, do your paticles also vanish ? (like when a cloud disintegrates)
Yes. The particles are killed when they reach a certain age.
--
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/
<><
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