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Here I've used my particle system to simulate some cheap, fast-rendering
fire using glows. (Unfortunately glows only work on dark backgrounds.)
I'm not quite sure how realistic it is. How would you rate it?
Rune
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Attachments:
Download 'fire.mpg' (122 KB)
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From: Christoph Hormann
Subject: Re: particle system : fire (121kbu)
Date: 1 Apr 2001 05:35:45
Message: <3AC6F671.139741D2@gmx.de>
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Rune wrote:
>
> Here I've used my particle system to simulate some cheap, fast-rendering
> fire using glows. (Unfortunately glows only work on dark backgrounds.)
>
> I'm not quite sure how realistic it is. How would you rate it?
>
The motion looks fairly realistic, but the glows don't create realistic
flames, which should have a more stretched shape and a sharper border.
Have you tried media with a blob pattern for density?
BTW, you can also use negative color in glows on bright background. Could
make a quite convincing and fast smoke.
Christoph
--
Christoph Hormann <chr### [at] gmx de>
IsoWood include, radiosity tutorial, TransSkin and other
things on: http://www.schunter.etc.tu-bs.de/~chris/
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"Rune" <run### [at] inamecom> wrote :
>
> I'm not quite sure how realistic it is. How would you rate it?
Looks like a large fire blurred in the distance.
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looks like some of the demoscene stuff - dunno if its realistic, very nice
all the same
--
Rick
POV-Ray News & Resources - http://Povray.co.uk
Kitty5 WebDesign - http://Kitty5.com
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TEL : +44 (01625) 266358 - FAX : +44 (01625) 611913 - ICQ : 15776037
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Better than any fire I've ever made. :) I agree with Bill, though. Add some
turbulence to the glows.
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"Christoph Hormann" wrote:
> The motion looks fairly realistic, but the glows don't
> create realistic flames, which should have a more stretched
> shape and a sharper border.
Ok.
> Have you tried media with a blob pattern for density?
No, but I've been thinking about it. I'll probably try it later.
> BTW, you can also use negative color in glows on bright
> background. Could make a quite convincing and fast smoke.
Good idea. I will try it later. I think media will do a better job for smoke
too though.
Rune
--
\ Include files, tutorials, 3D images, raytracing jokes,
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"Bill DeWitt" wrote:
> Looks like a large fire blurred in the distance.
Hmm, I agree.
Rune
--
\ Include files, tutorials, 3D images, raytracing jokes,
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"Rick [Kitty5]" wrote:
> looks like some of the demoscene stuff
What demoscene stuff are you talking about?
> - dunno if its realistic, very nice all the same
Thank you!
Rune
--
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"Tony[B]" wrote:
> Better than any fire I've ever made. :)
Really? :)
> I agree with Bill, though. Add some turbulence to the glows.
I'll try, but I don't think that will help. Media is the way I guess.
Rune
--
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TonyB suggested that I should add turbulence to the glows to improve the
fire.
Here it is - I think it does improve it! It's a lot slower too though...
Rune
--
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Attachments:
Download 'fireturb.mpg' (122 KB)
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> TonyB suggested that I should add
> turbulence to the glows to improve
> the fire.
Eeeenteresting... I didn't think it would work that well... still, there's
something not quite right... Maybe you need to add more particles?
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"Rune" <run### [at] inamecom> wrote in message
news:3ac7ae06@news.povray.org...
> TonyB suggested that I should add turbulence to the glows to improve the
> fire.
>
> Here it is - I think it does improve it! It's a lot slower too though...
>
I actually think this looks excellent, especially at the very top where the
'flames' are dying. I think that what would make it even more realistic is
to speed it up - at the moment it looks like slo-motion fire. Maybe this is
what's causing people to comment on it's 'slight' lack of realism.
Also (if you are able), attatch some audio of a fire crackling... I'm sure
that would help ;-)
All the best,
Andy Cocker
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Beautiful!
Love it!
Nekar
"Rune" <run### [at] inamecom> wrote in message
news:3ac7ae06@news.povray.org...
> TonyB suggested that I should add turbulence to the glows to improve the
> fire.
>
> Here it is - I think it does improve it! It's a lot slower too though...
>
> Rune
> --
> \ Include files, tutorials, 3D images, raytracing jokes,
> / The POV Desktop Theme, and The POV-Ray Logo Contest can
> \ all be found at http://rsj.mobilixnet.dk (updated March 29)
> / Also visit http://www.povrayusers.org
>
>
>
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From: Marc-Hendrik Bremer
Subject: Re: Fire With Turbulence (121kbu)
Date: 2 Apr 2001 03:13:50
Message: <3ac826ae@news.povray.org>
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When I look at it, I just think 'torch' with that swinging in the upper
part, it can't be that a big fire, but it has to be quite 'free' to burn
that way.
I like it very much. As Andy said, it is a bit slow for real fire. And I
miss a bit of green in the upper part (for which reason ever, I wouldn't
expect much of it in fire, but I can't help).
Marc-Hendrik
Rune schrieb in Nachricht <3ac7ae06@news.povray.org>...
>TonyB suggested that I should add turbulence to the glows to improve the
>fire.
>
>Here it is - I think it does improve it! It's a lot slower too though...
>
>Rune
>--
>\ Include files, tutorials, 3D images, raytracing jokes,
>/ The POV Desktop Theme, and The POV-Ray Logo Contest can
>\ all be found at http://rsj.mobilixnet.dk (updated March 29)
>/ Also visit http://www.povrayusers.org
>
>
>
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Rune <run### [at] inamecom> wrote:
> Here I've used my particle system to simulate some cheap, fast-rendering
> fire using glows. (Unfortunately glows only work on dark backgrounds.)
> I'm not quite sure how realistic it is. How would you rate it?
I've been looking at both, and it's fantastic. The edges are a little funky
on the bottom, as it fades out, but I don't know that there's much that can
be done about that, using glows. The top reminds me of the light from the
fire reflected off of smoke (smoke so dark you can't see it against the
background, maybe?)
Still, it's very nice. You might want to try adding a ground plane and a
few light sources (not sure what, or how, since one for every particle would
be *way* slow) to give the ground flickering. It would add a lot of
realism.
Geoff
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definatly looks much better, maybe you should try placing a couple of these
side by side, increasing the overall particle count, yet mainging them half
the size they are now
--
Rick
POV-Ray News & Resources - http://Povray.co.uk
Kitty5 WebDesign - http://Kitty5.com
Hi-Impact web site design & database driven e-commerce
TEL : +44 (01625) 266358 - FAX : +44 (01625) 611913 - ICQ : 15776037
PGP Public Key
http://pgpkeys.mit.edu:11371/pks/lookup?op=get&search=0x231E1CEA
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"Tony[B]" wrote:
> Eeeenteresting... I didn't think it would work that well...
Me neither. :)
> still, there's something not quite right... Maybe you
> need to add more particles?
Dunno. I will try to tweak it to see what looks nice.
Rune
--
\ Include files, tutorials, 3D images, raytracing jokes,
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"Andy Cocker" wrote:
> I actually think this looks excellent, especially at
> the very top where the 'flames' are dying.
I agree that's the best part.
> I think that what would make it even more realistic
> is to speed it up
Will do!
> Also (if you are able), attatch some audio of a fire
> crackling... I'm sure that would help ;-)
Hmm, maybe, if I can find a good sound and if it doesn't add too much to the
filesize. :)
Rune
--
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"Nekar Xenos" wrote:
> Beautiful!
>
> Love it!
Thank you!
Rune
--
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"Marc-Hendrik Bremer" wrote:
> When I look at it, I just think 'torch' with that
> swinging in the upper part, it can't be that a big
> fire, but it has to be quite 'free' to burn that way.
I agree. I think.
> I like it very much.
Thank you!
> As Andy said, it is a bit slow for real fire.
I will speed it up!
I'm not sure about the green tint though...
Rune
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"Nekar Xenos" wrote:
> Nice work.
Thanks!
> It reminds me of the flames in a game called
> 'the Wheel of Time' :)
Doesn't ring a bell.
> I think the top part of each 'particle' should be
> pointy maybe...
That's not possible with glows, but you gave me another idea: I'll try to
scale the turbulence longer in the y direction and see if that improves it.
:)
> Flames are also usually more transparent at the core.
Again, that's not so easy to control with glows. But I'll keep it in mind
for my media experiments which I will do later!
Rune
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"Geoff Wedig" wrote:
> I've been looking at both, and it's fantastic.
Thank you! :)
> The edges are a little funky on the bottom, as it fades
> out, but I don't know that there's much that can be done
> about that, using glows.
I think you're right...
> The top reminds me of the light from the fire reflected
> off of smoke (smoke so dark you can't see it against the
> background, maybe?)
I hadn't thought about that, but it could be interpreted that way. I don't
really have any smoke in the scene though, so it would just be fake if
anything.
> You might want to try adding a ground plane and a few
> light sources (not sure what, or how, since one for every
> particle would be *way* slow) to give the ground flickering.
> It would add a lot of realism.
Good idea, I'll try!
Rune
--
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From: Marc-Hendrik Bremer
Subject: Re: Fire With Turbulence (121kbu)
Date: 2 Apr 2001 11:36:37
Message: <3ac89c85@news.povray.org>
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Rune schrieb in Nachricht <3ac89512$1@news.povray.org>...
>I'm not sure about the green tint though...
Me neither ;-)
Marc-Hendrik
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> > Also (if you are able), attatch some audio of a fire
> > crackling... I'm sure that would help ;-)
>
> Hmm, maybe, if I can find a good sound and if it doesn't add too much to the
> filesize. :)
To get a reasonable crackling sound, take 1 (one) plastic crisp packet,
and rustle, crunch and otherwise mangle it next to the microphone. Well
that's how they did the fire sound effect in the original Populous,
anyway :)
As far as the file size goes, you're on your own...
Bye for now,
Jamie.
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Just viewed both of them. Very nice! Makes me want to break out the
marshmallows. Hmmm. . . a few glowing logs at the base and nobody would
know it wasn't transparent; a little blue glow undulating across their
surface. . . keep just a few of the un-turbulated particles from the first
anim and slow them down as bits of ash on convection currents. . . yeah.
Then I would need hotdogs too!
Batronyx™ ^"^
bat### [at] cadronhsacom
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