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In article <39832631@news.povray.org>, "Bob Hughes"
<per### [at] aolcom?subject=PoV-News:> wrote:
> Fairly good distribution. Made me think of something though. A
> tightness factor could be good, kind of like a density variable.
If you mean a way to adjust the way the particles fall off toward the
edges, that would certainlly be possible.
> I can guess that by temperature you already have a proximity thing
> going on there. I haven't seen anything written about it to know
> what's involved.
It has nothing at all to do with proximity...the particles start out
with a certain temperature, and cool off toward 0, the ambient
temperature. Hot particles rise more quickly than cooler particles. As
the particles cool off, the smoke settles into a layer.
> What I'm thinking is that if a constraint variable were put on the
> particles which would allow for a forced closeness at a orifice then
> there would be more densely packed yet active particles. And upon
> leaving the constrained zone they could become more diffuse and less
> active. As one other force I'm talking about, mixed in with the
> others. Does that seem right? Or is there no reason to consider
> that type of thing?
Uhh, I think you should look to the particle_system patch for that. This
was supposed to be an extremely simplified particle system which doesn't
require any unofficial features, just to demonstrate a way to get smoke
to rise realistically.
Besides, what you are asking for sounds like inter-particle forces,
which are slow even in C...I have done it before in POV-Script, but the
parse times were terrible.
--
Christopher James Huff - Personal e-mail: chr### [at] maccom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://homepage.mac.com/chrishuff/
TAG Web page: http://tag.povray.org/
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