Before Pov-Ray 3.1 came out, I think I had finally perfected the use of 
atmospheric effects, then 3.l came out...heh. The problem I am having is 
that the povuser.txt file doesn't have sufficient informatino on using 
the new atmospheric effects. I ended up just droping it in a scene I was 
working on, and it ended up working out for the better. 

BUT, just so I know, how do I set an atmospheric effect to show a rainy 
haze that only really shows up when light hits it (I was trying to get 
spotlight beams to show up). I tried doing it, but I got a lot of 
distortion and grainy stuff.. I thought about using clear boxes and 
filling them with an atmosphere, but then I would also have to simulate 
fog...argh! :)

Any help would be apreciated. If you could direct me toward an example, 
or a documented source, that'd be just fine by me! :)

Also, any ideas of when Pov-Ray 3.1a will be comming out in Linux?

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A short tutorial on media can be found at:
http://members.xoom.com/POVRAY3/media1.html

I don't know if it will help but it can't hurt.

I'm not sure about the official release of v3.1 for linux but
there has been an unofficial release or two. There was an
announcement on povray.general about it sometime shortly after
the official windows release came out. I believe the posters
name was Glen Berry and had the url. Twist's site might also
have a copy of it laying around. For that try:
http://www.twysted.net

Ken Tyler

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Wow that was quick :) Thanks for the help! ONE more thing, if you can 
help me (I forgot to mention this after I posted it). the Pov-Ray DOC 
(thank God for it) mentions about phasing pigments and such. However, 
I'm having a problem doing it. I've done it before, but it wasn't fast 
enough, so I upped the clock value: 

sphere{
 <0, 0, 0>
 15
 pigment{ 
  bozo
  color_map{
  [0 rgb <1, 1, 1>]
  [1 rgb <0, 0, 0>]
  }
 phase (clock*4)
 }
}

but the AVI didn't show much. What I am wondienrg is how to properly 
achive something like a realistic water texture (using a pigment and 
*NOT* normal, as the reflection of objects goes to crap) that 
ripples....

Thanks again for your help, hope I'm not being too annoying :)

Tim Soderstrom



Ken wrote:
> 
> A short tutorial on media can be found at:
> http://members.xoom.com/POVRAY3/media1.html
> 
> I don't know if it will help but it can't hurt.
> 
> I'm not sure about the official release of v3.1 for linux but
> there has been an unofficial release or two. There was an
> announcement on povray.general about it sometime shortly after
> the official windows release came out. I believe the posters
> name was Glen Berry and had the url. Twist's site might also
> have a copy of it laying around. For that try:
> http://www.twysted.net
> 
> Ken Tyler
>

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Phase alone doesn't do a very good job of simulating water in my opinion.
You'll get better results by averaging patterns and moving them in
different directions.  You can include phase with the averaged patterns.

You really should use normals for creating your water surface.  The reason
it looks bad is that the official POV doesn't take angle into account for
calculating reflection.  You will get much better results using Mike
Paul's wyzPOV, which you can get at http://twysted.net.  It's also
included in the superpatch, minus the total internal reflection ( the part
that makes prisms act as a mirror).

Some pattern suggestions:  Try a gradient pattern for getting the look of
waves on the shoreline. Bumps looks good for farther out waves.  Try the
bumps traveling a little along the y axis too to get more variation to the
waves.

Tim Soderstrom wrote:

> Wow that was quick :) Thanks for the help! ONE more thing, if you can
> help me (I forgot to mention this after I posted it). the Pov-Ray DOC
> (thank God for it) mentions about phasing pigments and such. However,
> I'm having a problem doing it. I've done it before, but it wasn't fast
> enough, so I upped the clock value:
>
> sphere{
>  <0, 0, 0>
>  15
>  pigment{
>   bozo
>   color_map{
>   [0 rgb <1, 1, 1>]
>   [1 rgb <0, 0, 0>]
>   }
>  phase (clock*4)
>  }
> }
>
> but the AVI didn't show much. What I am wondienrg is how to properly
> achive something like a realistic water texture (using a pigment and
> *NOT* normal, as the reflection of objects goes to crap) that
> ripples....
>
> Thanks again for your help, hope I'm not being too annoying :)
>
> Tim Soderstrom
>

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