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I abandoned the blob pattern and function{ } based thunderhead approach for
a slightly more cumbersome but faster rendering one. I am not completely
satisfied with it yet, but with a full scene and other clouds I think it
would do pretty well.
Full scene is very, very WIP, will post when deemed acceptable.
Reactor
PS. this took about 7.5 hours on a P4 running at 3.4GHz
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Attachments:
Download 'thunderheads3.jpg' (20 KB)
Preview of image 'thunderheads3.jpg'
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Looks, too small to me, and too white. The thunderheads around here are big
and scary.
AW
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Sorry, I should have mentioned that the approx. height is 30,000 pov units,
and the camera is about 15000 units away... the darkening can be done via
adjustment of emission parameters, the scarieness is the WIP part...
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From: Wolfgang Wieser
Subject: Re: Media based cloud testing - thunderhead
Date: 14 Aug 2004 09:11:51
Message: <411e0f97@news.povray.org>
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Reactor wrote:
> I abandoned the blob pattern and function{ } based thunderhead approach for
> a slightly more cumbersome but faster rendering one. I am not completely
> satisfied with it yet, but with a full scene and other clouds I think it
> would do pretty well.
>
Not bad IMO.
BTW, I was doing some experiments with your posted media based clouds and
found that very nice clouds can also be made with scattering only, i.e.
without emission and absorption. Seems to me to be nearer to the "physical
reality"...
I could post the reworked SDL code, if somebody is interested.
Wolfgang
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Looks good. Looks better inverted (upside-down). Text book description
is usually anvil shaped.
> PS. this took about 7.5 hours on a P4 running at 3.4GHz
Ouch.
Alf
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From: Stefan Viljoen
Subject: Re: Media based cloud testing - thunderhead
Date: 15 Aug 2004 04:39:39
Message: <411f214a@news.povray.org>
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Wolfgang Wieser wrote:
> Reactor wrote:
>
>> I abandoned the blob pattern and function{ } based thunderhead approach
>> for
>> a slightly more cumbersome but faster rendering one. I am not completely
>> satisfied with it yet, but with a full scene and other clouds I think it
>> would do pretty well.
>>
> Not bad IMO.
>
> BTW, I was doing some experiments with your posted media based clouds and
> found that very nice clouds can also be made with scattering only, i.e.
> without emission and absorption. Seems to me to be nearer to the "physical
> reality"...
>
> I could post the reworked SDL code, if somebody is interested.
>
> Wolfgang
Please!
--
Stefan Viljoen
Software Support Technician
Polar Design Solutions
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From: Wolfgang Wieser
Subject: Re: Media based cloud testing - thunderhead
Date: 17 Aug 2004 19:27:14
Message: <41229452@news.povray.org>
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Stefan Viljoen wrote:
> Wolfgang Wieser wrote:
>> I could post the reworked SDL code, if somebody is interested.
>>
>
> Please!
>
See p.text.scene-files and have fun.
Wolfgang
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