POV-Ray : Newsgroups : povray.binaries.images : WIP: Surreal? : Re: Surreal? Server Time
12 Aug 2024 19:36:12 EDT (-0400)
  Re: Surreal?  
From: Tim Nikias v2 0
Date: 14 Jul 2003 20:37:10
Message: <3f134cb6@news.povray.org>
Well, asking for suggestions, here are mine:

There are two methods simulating clouds with POV-Ray:
1. Stacked-Planes
2. Media

Since POV-Ray 3.5, media has become efficient enough
to render clouds in a reasonable time with reasonable
quality. So, I suggest using scattering media 3, with high
enough scattering and additionally, high enough absorption.
I mostly do something like:
media{
 scattering{3, Some_Color} absorption <1,1,1>-Some_Color
 method 3 intervals 1 samples Low_Samples, High_Samples
density{rgb Some_Dense_Value}
density{ some_Pattern }
}

Where Color is the color of the clouds, low- and high-samples
is used for calculating the media. I'd stick to values like
25,50 at the beginning and increase as needed.
The solid density is used to multiply the scattering, this could also
be achieved by simply multiplying the values for scattering
and absorption (for absorption, do like
(<1,1,1>-Some_Color)*Multiplier)

I just prefer using a solid density to control that, there's no actual
difference anyway.

For the sun, a media with spherical pattern to give a soft glow,
colors are of your choosing (after all, its your image, you should
come up with most of it :-)

As an advice: don't look at my website until you've finished the
image. I've done something similiar and don't want to spoil you
the fun of doing this and being creative about it. Additionally,
it seems that I've got a little more experience, so if you'd see
my image, you might lose interest in finishing yours. I don't want
that to happen: after all, there are a lot of people out here who
might come up with similiar ideas. That doesn't make yours
less original.

Regards,
Tim

-- 
Tim Nikias v2.0
Homepage: http://www.digitaltwilight.de/no_lights

> Not sure if this fits this category... but its just something that came to
> me.
>
> I'm not too happy with the clouds or sun yet but it gives an indication
> anyway... :)
>
> NeoNux
>
>
>
>


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