POV-Ray : Newsgroups : povray.binaries.images : Study for individual clouds. Server Time
2 Aug 2024 16:23:12 EDT (-0400)
  Study for individual clouds. (Message 1 to 5 of 5)  
From: Bruno Cabasson
Subject: Study for individual clouds.
Date: 28 Jun 2007 08:00:02
Message: <web.4683a2416089feb3e8ba46670@news.povray.org>
Hi friends!

After a first pass for my study on cloudscapes, and especially sunsets, I
focus now on individual clouds and experimenting. I use the POV's basic
scene for the environment. Here is a first attempt to a compact and



Comments and advise welcome.

I am aware that individual clouds are DF3'able, and that the subjet has
already been worked (cf Gilles Tran). My concern is to try and find a
single-pass yet effective and versatile way to get acceptable clouds, with
means to produce a wide variety of cloud types and coverages. If it appears
that a single pass process cannot meet that goal, I would like to automate
it.

    Bruno


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Attachments:
Download 'clouds3.png' (89 KB)

Preview of image 'clouds3.png'
clouds3.png


 

From: Thomas de Groot
Subject: Re: Study for individual clouds.
Date: 28 Jun 2007 08:27:04
Message: <4683a918$1@news.povray.org>
"Bruno Cabasson" <bru### [at] alcatelaleniaspacefr> schreef in bericht 
news:web.4683a2416089feb3e8ba46670@news.povray.org...
> Hi friends!
>
> After a first pass for my study on cloudscapes, and especially sunsets, I
> focus now on individual clouds and experimenting. I use the POV's basic
> scene for the environment. Here is a first attempt to a compact and


>
> Comments and advise welcome.
>
> I am aware that individual clouds are DF3'able, and that the subjet has
> already been worked (cf Gilles Tran). My concern is to try and find a
> single-pass yet effective and versatile way to get acceptable clouds, with
> means to produce a wide variety of cloud types and coverages. If it 
> appears
> that a single pass process cannot meet that goal, I would like to automate
> it.
>

Imo, the vertical cloud is very realistic. There is one similar to that on 
the 'screen' of the window I am looking through at this very moment  :-)
The horizontal one seems rather 'undefined', not much internal turbulence. I 
think it needs a bit more structure.

Thomas


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From: Skip Talbot
Subject: Re: Study for individual clouds.
Date: 28 Jun 2007 09:49:01
Message: <4683bc4d$1@news.povray.org>
Thomas de Groot wrote:

> Imo, the vertical cloud is very realistic. There is one similar to that on 
> the 'screen' of the window I am looking through at this very moment  :-)
> The horizontal one seems rather 'undefined', not much internal turbulence. I 
> think it needs a bit more structure.
> 
> Thomas
> 
> 

I agree.  That one on the right looks very good, and the one on the left 
looks very familiar.  I believe I have produced something similar in the 
past.  Please keep us up to date on your progress and your processes for 
making these clouds.  What are the technical details behind your current 
attempts?  Is that an isosurface with a density function?  Rendering 
cumulus in POV-Ray has intrigued me for quite awhile, and I'm still 
pondering on how best to create the shapes involved.  I can produce 
small cumulus humilis type clouds using a few functions, but I'm unsure 
how to do the towering cumulus and cumulonimbus type clouds that have a 
well defined shape and a plethora of cauliflower type details.  Anyone 
have any ideas on how to model more advanced/complex clouds?

Skip


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From: Jim Holsenback
Subject: Re: Study for individual clouds.
Date: 28 Jun 2007 11:01:52
Message: <4683cd60@news.povray.org>
"Bruno Cabasson" <bru### [at] alcatelaleniaspacefr> wrote in message 
news:web.4683a2416089feb3e8ba46670@news.povray.org...
> Comments and advise welcome.

I agree with the others. The one on the right is MUCH better. I think what 
sets it apart from the left example is the depth and shading. That is to say 
the other appears more flat-ish looking. Very nice job .... I'm staying out 
of the cloud business (I'm not worthy !!! (Garth sez to Wayne)) ..... you're 
doing a way better job than I could.

Jim


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From: Bruno Cabasson
Subject: Re: Study for individual clouds.
Date: 28 Jun 2007 12:45:01
Message: <web.4683e4689385ebc5e8ba46670@news.povray.org>
"Jim Holsenback" <jho### [at] hotmailcom> wrote:
> "Bruno Cabasson" <bru### [at] alcatelaleniaspacefr> wrote in message
> news:web.4683a2416089feb3e8ba46670@news.povray.org...
> > Comments and advise welcome.
>
> I agree with the others. The one on the right is MUCH better. I think what
> sets it apart from the left example is the depth and shading. That is to say
> the other appears more flat-ish looking. Very nice job .... I'm staying out
> of the cloud business (I'm not worthy !!! (Garth sez to Wayne)) ..... you're
> doing a way better job than I could.
>
> Jim

Thnaks! It's still embryonic, and I have to persevere .... I'd like to get
in-fine a simple process (trivial would be better) and generic parameters
to define atmospheres and cloudscapes that look realistic, with at the same
time a good versatility and a good operability.

    Bruno


PS: I wrote Thnaks instead of Thanks, but it sounds funny to me. I keep it.


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