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From: Thomas de Groot
Subject: Cloud Shells by Mick Hazelgrove (2004) - made easy
Date: 1 Nov 2020 02:39:56
Message: <5f9e664c$1@news.povray.org>
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Please find here the cloud shell macro developed by Juha Leppälä and
Mick Hazelgrove in 2004, who are hereby sincerely acknowledged. I
cleaned up the code (although I do not remember how the original code
looked) and added an atmospheric haze shell to complete the set. I also
added a couple of comment lines to the media code to help those less
familiar with the use of media.
Enjoy!
--
Thomas
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Attachments:
Download 'mh_cloudshell_test.pov.txt' (9 KB)
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hi,
Thomas de Groot <tho### [at] degroot org> wrote:
> Please find here the cloud shell macro developed by Juha Leppälä and
> Mick Hazelgrove in 2004, who are hereby sincerely acknowledged. I
> cleaned up the code (although I do not remember how the original code
> looked) and added an atmospheric haze shell to complete the set. I also
> added a couple of comment lines to the media code to help those less
> familiar with the use of media.
thanks. great looking demo image. any chance of you posting a simple demo
scene?
regards, jr.
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From: Thomas de Groot
Subject: Re: Cloud Shells by Mick Hazelgrove (2004) - made easy
Date: 2 Nov 2020 02:17:46
Message: <5f9fb29a$1@news.povray.org>
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Op 01/11/2020 om 11:25 schreef jr:
> hi,
>
> Thomas de Groot <tho### [at] degrootorg> wrote:
>> Please find here the cloud shell macro developed by Juha Leppälä and
>> Mick Hazelgrove in 2004, who are hereby sincerely acknowledged. I
>> cleaned up the code (although I do not remember how the original code
>> looked) and added an atmospheric haze shell to complete the set. I also
>> added a couple of comment lines to the media code to help those less
>> familiar with the use of media.
>
> thanks. great looking demo image. any chance of you posting a simple demo
> scene?
>
Oh! Sorry. This scene /is/ also the demo scene. Details at the end of
the file. ;-)
Consider this to be version 1. In the mean time, I have been thinking
about two improvements. (1) scaling differently the clouds should not be
done with the Scale parameter as that will unavoidably change also the
colour of the cloud media. Much better is to do that by scaling the
density, and rotate the shell afterwards for an interesting view. (2) I
am not satisfied with the horizon. I think I know how to solve this but
need a little time. That will be version 2, considering Mick's original
as version 0.
--
Thomas
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hi,
Thomas de Groot <tho### [at] degrootorg> wrote:
> Oh! Sorry. This scene /is/ also the demo scene. Details at the end of
> the file. ;-)
cheers.
> Consider this to be version 1. ...
:-)
regards, jr.
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From: Thomas de Groot
Subject: Re: Cloud Shells by Mick Hazelgrove (2004) - made easy - version 2
Date: 15 Nov 2020 02:56:30
Message: <5fb0df2e@news.povray.org>
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Version 2 of Cloud Shells has resulted in a complete rewrite. The macro
structure has been abandoned in favour of a better user control. All
transformations of the clouds are controlled by the density parameters.
Note in particular the use of rotation and scale there. Another
improvement, imo, is the uniform thickness of the cloud shells from
zenith to horizon, in contrast to version 1. Also, it is possible to
choose a clear horizon if that is called for by your scene. Extensive
comments are added everywhere and all parameters can be changed by the
user, so feel adventurous and play!
--
Thomas
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Attachments:
Download 'mh_cloudshell_v2.pov.txt' (17 KB)
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