POV-Ray : Newsgroups : povray.binaries.animations : Re: You have clothsim. Want fluidsim? Server Time
4 Nov 2024 19:22:55 EST (-0500)
  Re: You have clothsim. Want fluidsim? (Message 1 to 5 of 5)  
From: Bugs74
Subject: Re: You have clothsim. Want fluidsim?
Date: 31 Mar 2001 15:42:59
Message: <3ac64153@news.povray.org>
Your MPG-file is a bit too large to post here.
Anyway, I'm interested in Fluidsim!

Bugs74

"Ben Birdsey" <cla### [at] mailcom> schreef in bericht
news:3AC62CF9.BA43071F@mail.com...
>
> Here's an animation of an "exploding" fluid droplet.  The fluid is
> rendered as a bunch of blobs though you could use any objects.
>
> The basis of the simulation is to calculate the spring-like and viscous
> forces between nearest neighbors.  By limiting it to nearest neighbors
> you would reduce the simulation time from O( N^2 ) to O( N ln(N) ),
> which is completely necessary if you want to incorporate these objects
> into something like spray.inc.
>
> This animation was produced using a POV script file with uses only 14
> blobs to represent the fluid.  As you would expect, declaring and using
> complex data structures is difficult, so there is not yet any nearest
> neighbor checking. Ideally, you would want 140 or 1400 "blob" elements.
> If the nearest neighbor method was used the computation time would
> increase by factors of 5 and 74, respectively (though the simulation is
> not nearly the slowest step).
>
> -Ben


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From: Sander
Subject: Re: You have clothsim. Want fluidsim?
Date: 31 Mar 2001 16:40:21
Message: <MPG.15306d2fe6476f7598971c@NEWS.POVRAY.ORG>
In article <3AC62CF9.BA43071F@mail.com>, Ben Birdsey says...
> 
> Here's an animation of an "exploding" fluid droplet.  The fluid is
> rendered as a bunch of blobs though you could use any objects.
> 

It is one of the most catching animations I have seen for some time! 
Really fantastic. Probably because it is very natural looking, although 
I never have seen something like it in real time. Great!

-- 
Regards,  Sander


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From: Rick [Kitty5]
Subject: Re: You have clothsim. Want fluidsim?
Date: 31 Mar 2001 17:16:23
Message: <3ac65737@news.povray.org>
very impressive, so in answer - hell yes we want fluid sim (and how about a
moray plugin version <g>)


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Rick

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From: Ben Birdsey
Subject: Re: You have clothsim. Want fluidsim?
Date: 31 Mar 2001 18:47:41
Message: <3AC66DC6.C5089A91@mail.com>
Bugs-

How small does the initial file have to be? I know that there's a 1MB
limit on this server, but apparently that is after uuencoding (or
whatever 7-bit encoding is used).

I compressed it down to less than 800kb (and obviously it could be a lot
smaller since there are hardly any MPEG defects in the thing.)

-Ben


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From: Dennis Milller
Subject: Re: You have clothsim. Want fluidsim?
Date: 31 Mar 2001 22:12:43
Message: <3ac69cab$1@news.povray.org>
Do you plan to upload the POV file for this by any chance? Really very
effective.
D>

"Ben Birdsey" <cla### [at] mailcom> wrote in message
news:3AC62CF9.BA43071F@mail.com...
>
> Here's an animation of an "exploding" fluid droplet.  The fluid is
> rendered as a bunch of blobs though you could use any objects.
>
> The basis of the simulation is to calculate the spring-like and viscous
> forces between nearest neighbors.  By limiting it to nearest neighbors
> you would reduce the simulation time from O( N^2 ) to O( N ln(N) ),
> which is completely necessary if you want to incorporate these objects
> into something like spray.inc.
>
> This animation was produced using a POV script file with uses only 14
> blobs to represent the fluid.  As you would expect, declaring and using
> complex data structures is difficult, so there is not yet any nearest
> neighbor checking. Ideally, you would want 140 or 1400 "blob" elements.
> If the nearest neighbor method was used the computation time would
> increase by factors of 5 and 74, respectively (though the simulation is
> not nearly the slowest step).
>
> -Ben


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