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Hi,
does anyone have a realistic way to simulate air and water?
For the air, it should make everything fading in distance to a air blue
and behave in all other ways also like atmosphere.
And the water should have transparency that becomes more bluish in
distance, simply like real water, too.
I intend to use both inside a cylinder, where the air would be in the
shape of a cylinder, and the water in the shape of a difference
(cylinder/cylinder).
Thanks a lot for your help.
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On 11-2-2016 3:35, Sven Littkowski wrote:
> Hi,
>
> does anyone have a realistic way to simulate air and water?
>
> For the air, it should make everything fading in distance to a air blue
> and behave in all other ways also like atmosphere.
>
> And the water should have transparency that becomes more bluish in
> distance, simply like real water, too.
>
> I intend to use both inside a cylinder, where the air would be in the
> shape of a cylinder, and the water in the shape of a difference
> (cylinder/cylinder).
>
> Thanks a lot for your help.
>
The keyword for both is: media.
If you want to learn about POV-Ray, I suggest you first experiment
deeply with the technique involved and then show us the results
(successes and failures).
--
Thomas
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Yes, I have used Media in a few cases before. But I find it hard, to
make it having the colors I want, and I indeed (here you're right) don't
have much understanding on how to work with it.
The media I need, would me of a cylindrical shape, thus I would create a
cylinder and fill it with media, that I know. But beyond that, there is
the vast void that I have to conquer, thus I need help to develop the
technologies for that. ;-)
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On 2/11/2016 11:10 AM, Sven Littkowski wrote:
> Yes, I have used Media in a few cases before. But I find it hard, to
> make it having the colors I want, and I indeed (here you're right) don't
> have much understanding on how to work with it.
>
> The media I need, would me of a cylindrical shape, thus I would create a
> cylinder and fill it with media, that I know. But beyond that, there is
> the vast void that I have to conquer, thus I need help to develop the
> technologies for that. ;-)
>
You can only get a generalised help. From my experience every time I use
media I have to relearn how to use it. It seems to me that each
different usage requires different settings.
--
Regards
Stephen
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On 11-2-2016 12:10, Sven Littkowski wrote:
> Yes, I have used Media in a few cases before. But I find it hard, to
> make it having the colors I want, and I indeed (here you're right) don't
> have much understanding on how to work with it.
>
> The media I need, would me of a cylindrical shape, thus I would create a
> cylinder and fill it with media, that I know. But beyond that, there is
> the vast void that I have to conquer, thus I need help to develop the
> technologies for that. ;-)
>
As for the air, I would say that a scattering media with a slightly
bluish tint would do the trick. Water is more tricky as it involves
absorption (red I would guess) in addition to scattering.
--
Thomas
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Yes, that is exactly the reason, why I find it so difficult to use,
despite of the gains it has.
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Thanks. There are two keywords in it, which will help me now to
investigate better: scattering and absorption.
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On 11-2-2016 13:45, Sven Littkowski wrote:
> Thanks. There are two keywords in it, which will help me now to
> investigate better: scattering and absorption.
>
With scattering you might also need to scatter a reddish/orange colour
to get blue. I think I was wrong in my previous post.
Good starting point for air and water are - as always:
http://www.f-lohmueller.de/pov_tut/
http://www.imagico.de/pov/water/water04.php
--
Thomas
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On 2/11/2016 12:45 PM, Sven Littkowski wrote:
> Thanks. There are two keywords in it, which will help me now to
> investigate better: scattering and absorption.
>
There is also emission which you could use for the central light source.
I was going to mention Rune Johansen's "electric.inc" but that uses the
glow keyword which requires MegaPov. So it will not work with the
official PovRay.
Nevertheless Rune's site does have some good include files that you
might find useful. I often use his Grass Tex Include File and his
Particle System is good too.
--
Regards
Stephen
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On 2/11/2016 2:41 PM, Stephen wrote:
> Rune's site
Oops!
http://runevision.com/3d/
--
Regards
Stephen
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