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I'm proud to say no creature was harmed in the making of this scene.
However you may have a good idea there.
Bob
"TonyB" <ben### [at] panama c-comnet> wrote in message news:39050e56@news.povray.org...
| The tornado is fine, but where are the flying cows? I demand flying cows!
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Thanks. The scale isn't easy to decide. I didn't think out any sort of measure for
this.
It does really need a more complete scene to do it any justice, maybe I'll be able to
get
more done on it someday.
Bob
"Rick [Kitty5]" <kit### [at] dialpipexcom> wrote in message
news:39056929@news.povray.org...
| Nice one bob :)
| Looks fine i think if you make the twister smaller (in relation to the
| house) do a very barren ish dusty landscape witha few roads and a truck
| maybe, throw in a darker sky and some rain it will look perfect
|
| and tonyb is right, needs some cows.....(several hundred)
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| Rick
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I took another look at that one. I can see what you mean. Although that might go
best with a animation of the Tasmanian Devil whirring down from with it.
Bob
"DirkBoy" <dir### [at] lemongeckoorg> wrote in message news:39059793@news.povray.org...
| I think you need to combine this with Mark Wagner's "Not a reflective sphere
| over a checkered plane" posted on 3/31. I just watched Twister Sunday night,
| and so the atmospheric chaos thing is still fresh in my mind.
|
| Dirk
|
| PS (to all): I've yet to mess with isosurfaces or nonstandard media
| containers. Can an isosurface contain a media?
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In article <3904e6ae@news.povray.org>, "Bob Hughes"
<per### [at] aolcom?subject=PoV-News:> wrote:
> ... to ruin my scene. :-) Really, it is. The three media
> containers simply will not merge together well. I'm sure I've heard
> others say before that multiple containers having differing media
> won't work perfectly and I believe it. I tried various ways to CSG
> them or leave separate. What you see here is the separated way but
> doesn't matter in how the media is rendered.
It looks like your media containers are breaking up the sampling into
more intervals in some places than in others...increasing samples or
intervals might help. Also, was "merge {}" one of the CSG types you
tried? If this is the problem, merge {} should help, at least a little.
Another thing you might try is putting all of the media into one
container.
--
Christopher James Huff - Personal e-mail: chr### [at] yahoocom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://chrishuff.dhs.org/
TAG Web page: http://tag.povray.org/
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On Tue, 25 Apr 2000 08:07:34 -0500, "DirkBoy" <dir### [at] lemongeckoorg>
wrote:
>PS (to all): I've yet to mess with isosurfaces or nonstandard media
>containers. Can an isosurface contain a media?
Yes. It's an object like all others. You can even define the media
density with a function if you like :)
Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] usanet
TAG e-mail : pet### [at] tagpovrayorg
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From: Bob Hughes
Subject: Re: Tornado Threatens... torn media fix [~19KB Jpeg]
Date: 25 Apr 2000 22:47:37
Message: <390658c9@news.povray.org>
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"Chris Huff" <chr### [at] yahoocom> wrote in message
news:chrishuff_99-F73A41.17003925042000@news.povray.org...
|
| It looks like your media containers are breaking up the sampling into
| more intervals in some places than in others...increasing samples or
| intervals might help. Also, was "merge {}" one of the CSG types you
| tried? If this is the problem, merge {} should help, at least a little.
| Another thing you might try is putting all of the media into one
| container.
Nope, can't use a single container, at least not for this. The separate parts
have individual properties and overlapping positions. For instance,
a gradient y density_map wouldn't work well for it.
I figure you probably realized after posting the reply above that merge would
remove sections of the containers, media and all.
Turns out that the samples were too low, as you theorized. Thanks.
What prevented me from using more in the first place was the animation since
I wasn't making this to be a still image. Then I convinced myself it wouldn't change
at high enough samples anyway.
I post this message with example renders of both merge result and more samples,
should be obvious which is which. I had to adjust on the media some more after
the samples were raised so there's a difference in appearance from the original.
Btw, took 20 minutes for the "good" one at only 160 by 120 res. (resized to make
more visible), far too lengthy to get just a 90 frame animation within a single day.
Bob
Post a reply to this message
Attachments:
Download 'tornmedia.jpg' (14 KB)
Preview of image 'tornmedia.jpg'
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Bob Hughes wrote:
>
> Nope, can't use a single container, at least not for this. The separate parts
> have individual properties and overlapping positions. For instance,
> a gradient y density_map wouldn't work well for it.
Don't forget that you can put several media statements in
the same container, so there shouldn't be any problem even
if your medias have different properties and overlapping
positions. Also, the container for the ground cloud is still
visible even in the "good" version...
Nonetheless, this looks very promising.
Jerome
--
* Doctor Jekyll had something * mailto:ber### [at] inamecom
* to Hyde... * http://www.enst.fr/~jberger
*******************************
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From: Bob Hughes
Subject: Re: Tornado Threatens... torn media fix [~19KB Jpeg]
Date: 27 Apr 2000 14:09:17
Message: <3908824d@news.povray.org>
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"Jerome" <ber### [at] inamecom> wrote in message news:3908264F.EFE8D193@iname.com...
| Bob Hughes wrote:
| >
| > Nope, can't use a single container, at least not for this. The separate parts
| > have individual properties and overlapping positions. For instance,
| > a gradient y density_map wouldn't work well for it.
| Don't forget that you can put several media statements in
| the same container, so there shouldn't be any problem even
| if your medias have different properties and overlapping
| positions. Also, the container for the ground cloud is still
| visible even in the "good" version...
|
| Nonetheless, this looks very promising.
Thanks. Yes, I didn't render that one with the highest samples I had tried
because of the time it takes, but I did do a partial render with more samples
and it was completely correct.
The funnel has two media statements and the dust cloud has one with 3
predefined density statements.
It must only be as Chris has said, higher sampling and/or intervals is
needed to merge them properly. Nothing to fear but render-time.
Bob
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Watch Monty Python And The Holy Grail. Hmmm... how about a flying Wooden
Rabbit!
--
"Yub-Yub!" Lt. Kettch
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"Toto, I don't think we're going to be in Kansas much longer..."
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