I added a sky sphere with clouds, the classical bozo pigment
(don't look at me, I'm getting a red face).

After playing with different settings I arrived to this scene. It
contains only the isosurfce and the sky. The idea is that the light
refracted by the water that hits the camera is simulated from de bright
sky below the isosurface. To make this effect a little more believable I
added some absorption to the interior statement (I have avoided the use
of media).

I couldn't use Blinn highlights because of the ior. I don't know the ior
of ocean water but I tested iors ranging from 1.2 to 1.4 and couldn't
see any noticeable difference. So I choose ior 1.3.

The most unrealistic setting in this scene is the water pigment. Instead
of being completely transparent it's only half transparent.

Originally rendered at 800*600, it took 4.5 hours to render.

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Attachments:
Download 'waterf.jpg' (49 KB)

Preview of image 'waterf.jpg'

I think that the ior of water is 1.33 so it's close.  I'm not sure if the
salts affect the ior of water.
Brendan Ryan

Alberto wrote:

> I added a sky sphere with clouds, the classical bozo pigment
> (don't look at me, I'm getting a red face).
>
> After playing with different settings I arrived to this scene. It
> contains only the isosurfce and the sky. The idea is that the light
> refracted by the water that hits the camera is simulated from de bright
> sky below the isosurface. To make this effect a little more believable I
> added some absorption to the interior statement (I have avoided the use
> of media).
>
> I couldn't use Blinn highlights because of the ior. I don't know the ior
> of ocean water but I tested iors ranging from 1.2 to 1.4 and couldn't
> see any noticeable difference. So I choose ior 1.3.
>
> The most unrealistic setting in this scene is the water pigment. Instead
> of being completely transparent it's only half transparent.
>
> Originally rendered at 800*600, it took 4.5 hours to render.
>
>   ------------------------------------------------------------------------
>  [Image]

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In article <395E8CD1.C79C719A@global2000.net>, Andrea Ryan 
<ary### [at] global2000net> wrote:

> I think that the ior of water is 1.33 so it's close.  I'm not sure if the
> salts affect the ior of water.

They do...I don't know how much, and the range varies, but I would guess 
seawater is between 1.4 and 1.5.

-- 
Christopher James Huff - Personal e-mail: chr### [at] maccom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://homepage.mac.com/chrishuff/
TAG Web page: http://tag.povray.org/

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First, great rendering of realistic water.
Secondly, I found a IOR for seawater:  1.42.  Must vary anyway, as you said.
Also found what might be a useful thing, a refraction displayer java applet:
http://wigner.byu.edu/LightRefract/LightRefract.html
I couldn't seem to change the various parameters though, maybe with some
modifications...

Bob

"Chris Huff" <chr### [at] maccom> wrote in message
news:chrishuff-F2256D.20124901072000@news.povray.org...
|
| seawater is between 1.4 and 1.5.

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Don Da, Don Da, Don Da Don Da Don Da... <End Jaws theme>

Alberto wrote:

> I added a sky sphere with clouds, the classical bozo pigment
> (don't look at me, I'm getting a red face).
>
> After playing with different settings I arrived to this scene. It
> contains only the isosurfce and the sky. The idea is that the light
> refracted by the water that hits the camera is simulated from de bright
> sky below the isosurface. To make this effect a little more believable I
> added some absorption to the interior statement (I have avoided the use
> of media).
>
> I couldn't use Blinn highlights because of the ior. I don't know the ior
> of ocean water but I tested iors ranging from 1.2 to 1.4 and couldn't
> see any noticeable difference. So I choose ior 1.3.
>
> The most unrealistic setting in this scene is the water pigment. Instead
> of being completely transparent it's only half transparent.
>
> Originally rendered at 800*600, it took 4.5 hours to render.
>
>   ------------------------------------------------------------------------
>  [Image]

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best water I've seen with POV - now put something in it to complete the
scene - there are some dolphin models out there www.3dlinks.com


"Alberto" <jac### [at] usbve> wrote in message news:395E7259.141CAD1C@usb.ve...
> I added a sky sphere with clouds, the classical bozo pigment
> (don't look at me, I'm getting a red face).
>
> After playing with different settings I arrived to this scene. It
> contains only the isosurfce and the sky. The idea is that the light
> refracted by the water that hits the camera is simulated from de bright
> sky below the isosurface. To make this effect a little more believable I
> added some absorption to the interior statement (I have avoided the use
> of media).
>
> I couldn't use Blinn highlights because of the ior. I don't know the ior
> of ocean water but I tested iors ranging from 1.2 to 1.4 and couldn't
> see any noticeable difference. So I choose ior 1.3.
>
> The most unrealistic setting in this scene is the water pigment. Instead
> of being completely transparent it's only half transparent.
>
> Originally rendered at 800*600, it took 4.5 hours to render.


----------------------------------------------------------------------------
----

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What can I say, you're lucky with regard to the current IRTC topic.
This will certainly come in handy, being maybe the best POV water I've
seen to date.


Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] usanet
TAG      e-mail : pet### [at] tagpovrayorg

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awesome!

Alberto wrote:

> I added a sky sphere with clouds, the classical bozo pigment
> (don't look at me, I'm getting a red face).
>
> After playing with different settings I arrived to this scene. It
> contains only the isosurfce and the sky. The idea is that the light
> refracted by the water that hits the camera is simulated from de bright
> sky below the isosurface. To make this effect a little more believable I
> added some absorption to the interior statement (I have avoided the use
> of media).
>
> I couldn't use Blinn highlights because of the ior. I don't know the ior
> of ocean water but I tested iors ranging from 1.2 to 1.4 and couldn't
> see any noticeable difference. So I choose ior 1.3.
>
> The most unrealistic setting in this scene is the water pigment. Instead
> of being completely transparent it's only half transparent.
>
> Originally rendered at 800*600, it took 4.5 hours to render.
>
>   ------------------------------------------------------------------------
>  [Image]

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I have only one thing to say about that water...

WOW!!!!!!

Dan Farmer

Alberto wrote:

> I added a sky sphere with clouds, the classical bozo pigment
> (don't look at me, I'm getting a red face).
>
> After playing with different settings I arrived to this scene. It
> contains only the isosurfce and the sky. The idea is that the light
> refracted by the water that hits the camera is simulated from de bright
> sky below the isosurface. To make this effect a little more believable I
> added some absorption to the interior statement (I have avoided the use
> of media).
>
> I couldn't use Blinn highlights because of the ior. I don't know the ior
> of ocean water but I tested iors ranging from 1.2 to 1.4 and couldn't
> see any noticeable difference. So I choose ior 1.3.
>
> The most unrealistic setting in this scene is the water pigment. Instead
> of being completely transparent it's only half transparent.
>
> Originally rendered at 800*600, it took 4.5 hours to render.
>
>   ------------------------------------------------------------------------
>  [Image]

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Peter, Greg, and Dan,  thank you for the comments. They have encourage
me to enter in the next irtc competition. Actually I'm trying to improve
the realism of the water. The suggestion made by Hans-Detlev was a good
one. Bob, thanks for the ior tip.

Regards, Alberto.

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