Okay with all these LOTW projects, seems it now starts getting me, too...

I've been playing a bit to model the crackle surface of a dry lake as 
seen on a photo of the Aral see. The structure seems nice but there 
is not yet any good texture for the surface details. And the vertical 
part of the large crackles still needs some work. 

http://www.cip.physik.uni-muenchen.de/~wwieser/tmp/topography.html

The POV SDL "source" code is available there, too. 
If somebody tries out and finds a nice texture, please let me know. 

Wolfgang

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You've already surpassed anything similar that I have tried to create.
Incredible work!

-- 
Jeremy
www.beantoad.com


"Wolfgang Wieser" <wwi### [at] nospamgmxde> wrote in message
news:40faa030@news.povray.org...
> Okay with all these LOTW projects, seems it now starts getting me, too...
>
> I've been playing a bit to model the crackle surface of a dry lake as
> seen on a photo of the Aral see. The structure seems nice but there
> is not yet any good texture for the surface details. And the vertical
> part of the large crackles still needs some work.
>
> http://www.cip.physik.uni-muenchen.de/~wwieser/tmp/topography.html
>
> The POV SDL "source" code is available there, too.
> If somebody tries out and finds a nice texture, please let me know.
>
> Wolfgang
>

Post a reply to this message

"Wolfgang Wieser" <wwi### [at] nospamgmxde> schreef in bericht
news:40faa030@news.povray.org...
> Okay with all these LOTW projects, seems it now starts getting me, too...

Yep! Another adict!!
Excellent work.
>
> I've been playing a bit to model the crackle surface of a dry lake as
> seen on a photo of the Aral see. The structure seems nice but there
> is not yet any good texture for the surface details. And the vertical
> part of the large crackles still needs some work.
>
lake sediments are very finely laminated (e.g. light/dark grey). The
challenge would be to make them curve upwards with the flakes that make up
the cracks. I don't know how to do this however... But, a finely laminate
texture would already be very good.

Thomas

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Thomas de Groot wrote:
> 
> "Wolfgang Wieser" <wwi### [at] nospamgmxde> schreef in bericht
> news:40faa030@news.povray.org...
>> Okay with all these LOTW projects, seems it now starts getting me, too...
> 
> Yep! Another adict!!
> Excellent work.
>
Thanks...

>> I've been playing a bit to model the crackle surface of a dry lake as
>> seen on a photo of the Aral see. The structure seems nice but there
>> is not yet any good texture for the surface details. And the vertical
>> part of the large crackles still needs some work.
>>
> lake sediments are very finely laminated (e.g. light/dark grey). 
>
That's true for most sediments (just happened to see such ones some 
minutes ago on the TV). However, the Aral see "desert" color is much more 
yellow on the photo. 

> The 
> challenge would be to make them curve upwards with the flakes that make up
> the cracks. 
>
You're right, it often looks that way. 

> I don't know how to do this however... But, a finely laminate 
> texture would already be very good.
> 
By using a texture function which is derived from the underlaying isosurface 
function, it could be possible to do so. 

Wolfgang

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"Wolfgang Wieser" <wwi### [at] nospamgmxde> wrote in message
news:40faa030@news.povray.org...
> Okay with all these LOTW projects, seems it now starts getting me,
too...

> http://www.cip.physik.uni-muenchen.de/~wwieser/tmp/topography.html

  This is really good imho. I've actually seen this in 1976, (South
UK) - those cracks in the earth were 12" deep in places... Fields that
I'd usually play in, I couldn't play in any more. I don't think the UK
had ever seen anything like it before, at least in my lifetime......
:oO

  My only suggestion for your image is... make the dirt grey for a
more realistic image? Intense heat tends to 'white-out' the 'peaks'
too, as opposed to the 'troughs'...

   ~Steve~


> Wolfgang
>

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"Wolfgang Wieser" <wwi### [at] nospamgmxde> schreef in bericht
news:41016337@news.povray.org...
> That's true for most sediments (just happened to see such ones some
> minutes ago on the TV). However, the Aral see "desert" color is much more
> yellow on the photo.

Yes indeed. It depends quite a lot on the local situation. In that respect,
the Aral "sea" is a particular one.
>
> By using a texture function which is derived from the underlaying
isosurface
> function, it could be possible to do so.
>
Yes indeed (again). I thought about that too after I had sent the mail...

Thomas

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