Adrian Pederson wrote:

> >I think the problem doesn't lie in some construction error, but the fact
> that
> >it isn't all that easy to create a nice blurry horizon with fog layers.
> I've
> >tried myself a few times and it was a disaster. If anyone ever succeeded in
> >creating a nice distant fog that blurs out the horizon, I'd be really
> >interested in how he/she accomplished that.
> >
> >JK
>
> Yes, please do tell, i'm still at the newbie stage and will soon be
> attempting to add some haze to the horizon of my current study scene.
> What i'm envisioning is the addition of enough fog to obscure but not
> completely eliminate the horizon line on my heightfield ground plane.
> Any hints on how to accomplish this will be much appreciated. Also, i
> am interested in any good sky texture hints, specifically how do i
> create nice 'fluffy' cirrus clouds.
>
> Adrian Pederson

  Greetings !

The following will attempt to show you how to read the manual
and provide you an example of using a fog to blur the horizon.
It may not be suitable to a given scene but clearly demonstrates
the desired affect. You may make your checks and money orders
out to ...

K.Tyler

camera{location<0,5,-5>look_at 5}
  light_source{<0,40,-670>rgb 1}
  sphere{<0,0,0>,1 scale <9000000,9000000,500000>inverse
  texture{pigment{bozo turbulence 0.56 colour_map {
  [0.0 0.5  colour red 0.3 green 0.3 blue 1.0
            colour red 0.3 green 0.3 blue 1.0]
  [0.5 1.0  colour red 0.3 green 0.3 blue 1.0
            colour red 1.0 green 1.0 blue 1.0]}}
  finish{ambient 0.7 diffuse 0 brilliance 1 }
  scale <300000,300000,10000>}
  texture{pigment{gradient<0,0,1>colour_map{
  [0.0 0.003 colour red 1.0 green 1.0 blue 1.0 filter 0
             colour red 1.0 green 1.0 blue 1.0 filter 0]
  [.003 .016 colour red 1.0 green 1.0 blue 1.0 filter 0
             colour red 1.0 green 1.0 blue 1.0 filter 1.0]
  [.016 1.01 colour red 1.0 green 1.0 blue 1.0 filter 1.0
             colour red 1.0 green 1.0 blue 1.0 filter 1.0]}}
  finish{ambient .7 diffuse 0 brilliance 1}
  scale <10,10,40000000>}
  translate <19.8928165,31.9178133,66.4087372>}

  fog {color  fog_type 2 fog_offset 555 fog_alt 1
  rgbf 1 transmit .5 distance 30000}

  plane{y,-150 pigment{rgb<.4,.25,.05>}finish{ambient .6}}

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