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Gail Shaw wrote:
>
> A challenge was given a week or two ago to
> produce realistic lightning in povray. I thought I'd have
> a go at it.
>
> The pictures below are of a very preliminary version
> of my lightning macro.
>
> Comments? Criticisms? Suggestions?
>
Sure :-)
-The shape looks good, but the decrease in width is too strong IMO (in many
cases, the width/brightness of a lightning stays quite constant during the path)
-It would be good to have the color fading from white to black/darkblue at the
edges. (you seem to use objects for the lightning, so this is probbaly not that
easy)
Christoph
--
Christoph Hormann <chr### [at] gmx de>
Homepage: http://www.schunter.etc.tu-bs.de/~chris/
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> -It would be good to have the color fading from white to black/darkblue at
the
> edges. (you seem to use objects for the lightning, so this is probbaly not
that
> easy)
Yes it is, with the blob pattern.
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Looks fine to me.
Rick
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> -It would be good to have the color fading from white to black/darkblue at the
> edges. (you seem to use objects for the lightning, so this is probbaly not that
> easy)
Actually I did this for my (well, not only my) IRTC-entry for History.
I just filled the object with a constant media with a very light blue.
At the edges, where there is less media to look through, it looks more
blue than inside the object (which is white because very light blue +
very light blue = white, well, in povray anyway :-)
ZK
http://www.povplace.be.tf
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"Christoph Hormann" <Chr### [at] schunteretctu-bsde> wrote in
message news:39B8D89E.A28789A8@schunter.etc.tu-bs.de...
|
| -The shape looks good, but the decrease in width is too strong IMO (in
many
| cases, the width/brightness of a lightning stays quite constant during the
path)
| -It would be good to have the color fading from white to black/darkblue at
the
| edges. (you seem to use objects for the lightning, so this is probbaly not
that
| easy)
I concur. This would do well for cloud to cloud lightning but in the case
of cloud to ground it should probably have a near constant main bolt. If a
large diffuse and lower ambient is used the edges will fade but since that's
light source dependant that could not work right. Transparency could be
used along with a strong highlight but once again is too dependant on
external light.
Tony's idea to use media is possibly the best answer I can think of too.
Bob
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Looks promising! Can you make it hit (as well as originate from) a
specific point?
Abe
Gail Shaw wrote:
>
> A challenge was given a week or two ago to
> produce realistic lightning in povray. I thought I'd have
> a go at it.
>
> The pictures below are of a very preliminary version
> of my lightning macro.
>
> Comments? Criticisms? Suggestions?
>
> Gail
> --
> ********************************************************************
> * gsh### [at] monotixcoza * System.dat not found. *
> * http://www.rucus.ru.ac.za/~gail/ * Reformat hard drive Y)es O)k *
> ********************************************************************
> * If at first you don't succeed, call it version 1.0 *
> ********************************************************************
>
> [Image]
>
> [Image]
>
> [Image]
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The general appearance looks very good to me. Just curious - does your
lightning emit light? I tried adding media to a bolt of lightning to get the
halo effect, but it didn't light up anything around it. (Plus, it looked
like crap.) Maybe adding some bluish-colored fade_power light sources along
the length of the bolt would do the trick, in order to light up the clouds
that the lightning is coming from...
Dave
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Well done, Gail! :)
Grim
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How about combining this with the new Glow light in MegaPov+ ?
Gail Shaw wrote:
> A challenge was given a week or two ago to
> produce realistic lightning in povray. I thought I'd have
> a go at it.
>
> The pictures below are of a very preliminary version
> of my lightning macro.
>
> Comments? Criticisms? Suggestions?
>
> Gail
> --
> ********************************************************************
> * gsh### [at] monotixcoza * System.dat not found. *
> * http://www.rucus.ru.ac.za/~gail/ * Reformat hard drive Y)es O)k *
> ********************************************************************
> * If at first you don't succeed, call it version 1.0 *
> ********************************************************************
>
> [Image]
>
> [Image]
>
> [Image]
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In article <39BB49BC.CB7DE99E@home.com>, Thomas Lake <tla### [at] homecom>
wrote:
> How about combining this with the new Glow light in MegaPov+ ?
No lights, mostly default radiosity settings, my own macro:
--
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/
<><
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Attachments:
Download 'Lightning.jpg' (20 KB)
Download 'Lightning2.jpg' (14 KB)
Preview of image 'Lightning.jpg'
Preview of image 'Lightning2.jpg'
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