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Here is the first semi successful test at making a rain column under a rain
cloud. Still much room for improvement, but far enough along to open it up
for comments and suggestions.
The sea, sky and clouds are part of Jaime Vives Piqueres' Tierra inc files.
I am modifying the cumulous include file to allow for rain. If you have not
taken a look at Jaime's site, you should. He has developed many excellent
techniques.
ALso thank you to Allain for pointing me in the right direction.
Tim
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Attachments:
Download 'rain test 1.jpg' (238 KB)
Preview of image 'rain test 1.jpg'
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1. I spelled Alain's name incorrectly!
2. Seing Tim N's snow macro gave me the idea that I could use a similar
method to test for placement of rain.........What do you think?
Tim
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> 2. Seing Tim N's snow macro gave me the idea that I could use a similar
> method to test for placement of rain.........What do you think?
Should be possible. A top-view of a cloud shouldn't be too hard to obtain.
Well... Actually, you could do it much easier. Render a top-view of the
cloud, and use the resulting image as a heightfield, which you place
underneath the cloud. Inside the heightfield you place the media for the
rain. When you tweak the borders of the clouds a little, it should be easy
to obtain an image where only thicker parts of the cloud actually drop rain.
But that's just a little rambling and would probably need refinement...
--
"Tim Nikias v2.0"
Homepage: <http://www.nolights.de>
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Your convection doesn't look deep enough to generate precipitation. These
look like "fair weather cumulus." Perhaps you could try a taller cumulus,
like what we storm chasers call a "turkey tower."
http://skydiary.com/gallery/chase2001/051001turkey.jpg
But if you are shooting for surrealism and not realism, you've nailed it. A
beautiful image. I'll comment on your other posting while I'm at it. That
ship model is fantastic and the reflection really came out well. I hope to
see a lot more of it posted here.
Skip
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"Tim McMurdo" <jod### [at] woh rrcom> wrote in message
news:web.41b8c971a7895f17acb32c570@news.povray.org...
> Here is the first semi successful test at making a rain column under a
rain
> cloud. Still much room for improvement, but far enough along to open it up
> for comments and suggestions.
>
> The sea, sky and clouds are part of Jaime Vives Piqueres' Tierra inc
files.
> I am modifying the cumulous include file to allow for rain. If you have
not
> taken a look at Jaime's site, you should. He has developed many excellent
> techniques.
>
> ALso thank you to Allain for pointing me in the right direction.
>
> Tim
As someone who spends a lot of time looking at clouds and tracking rain
(it's kind of a strange hobby of mine - I love the rain tracking weather
radars), I can tell you that the rain columns are a little too "contrasty".
The columns are a little too distinct and shouldn't be as dark.
Looking good!
Lance.
thezone - thezone.firewave.com.au
thehandle - www.thehandle.com
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Tim McMurdo wrote:
> Here is the first semi successful test at making a rain column under a rain
> cloud. Still much room for improvement, but far enough along to open it up
> for comments and suggestions.
Wow! ...very realistic effect. As others said, the columns seem too
dark and vertical, but they look really promising. I will be really glad
to have this incorporated back to my project "Tierra" (I've it a bit
abandoned, but it's the first on the "after the POVCOMP" list.. :).
--
Jaime
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I've seen very light cloud cover generate rain. I've forgotten the term now,
but the Japanese have a name for a light cloud that generates rain, the rain
evaporates, and recreates the cloud without any rain actually hitting the
ground. I'm sure one of our fellow artist's will enlighten us about that.
- Grim
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I'd love to see your source for this one.
- Grim
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Thank you all for some really good suggestions on improving the rain clouds.
I will work on this over the next week and get back with changes for you.
I didn't know we had so many weather experts in this community! I can always
count on this group.
:)
Thanks,
Tim
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news:web.41ba26ec10ab090ac78a8d070@news.povray.org...
> I didn't know we had so many weather experts in this community! I can
always
> count on this group.
>
Don't you ever stare at the clouds wondering how to raytrace them?
Marc
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