Mike,

I like the fluid change of the atmosphere from blue to transparent. The only 
problem I have is that, despite of an added "finish { ambient 0.0 }" the 
atmosphere remains visible even on the night side of the planet - the 
atmosphere seems to be ambiet.

Is there any way to solve that?

Best greetings,

Sven




"Mike Sobers" <sob### [at] mindspringcom> schrieb im Newsbeitrag 
news:web.44767ea6eed6fdf7613e60490@news.povray.org...
> "Sven Littkowski" <sve### [at] jamaica-focuscom> wrote:
>> Hello Mike,
>>
>> thanks for your help and advice, and examples. I already read your own
>> thread where you placed entire planets on your giant-sized patio (which I
>> like, actually) and posted there a similar question.
>>
>> Do you know any way to create clouds like on the photo below with 
>> POV-Ray?
>> And that blueish shine at the horizon?
>>
>> True thanks for your link, my browser has it open already. I am checking
>> them today and tomorrow.
>>
>> Later,
>>
>> Sven
>>
>>
>
> Hi Sven,
>
> As for the blue shine, try this.  Unfortunately, the clouds look nothing
> like your picture.  I think it would be difficult to reproduce the 3D
> texture seen in the picture.  Although, you could try some layered spheres
> with slightly different textures and normal maps.  That might do the 
> trick.
>
> Good luck,
> Mike
>
>
> // Planet
> sphere{<0,0,0>,2000
>  texture { agate
>  texture_map{
>      [0 pigment { color rgb <0,0,0.5>}  finish { ambient 0.2 diffuse 
> 0.1 }]
>      [0.45  pigment { color rgb <0,0,0.5>}  finish { ambient 0.2 diffuse
> 0.1 }]
>      [0.5 pigment { color rgb <0.52,0.32,0.16>}  finish { ambient 0.2
> diffuse 0.1 }]
>      [0.56 pigment { color rgb <0.52,0.32,0.16>}  finish { ambient 0.1
> diffuse 0.1 }]
>      [0.7  pigment {
>             granite
>             color_map {
>               [0 color rgb <0.12,0.32,0.16>]
>               [0.5 color rgb <0.12,0.32,0.16>]
>               [1 color rgb <0.42,0.22,0.16>]
>             } turbulence 0.5 scale 0.5
>             }
>             finish { ambient 0.1 diffuse 0.1 }
>             ]
>    }  turbulence 0.3
>   scale 200
>  }
>  rotate 40*x
> }
>
> //Clouds
>
> sphere{<0,0,0>,2005
>  texture { agate
>  texture_map{
>      [0 pigment { color rgbt 1}  ]
>      [0.2 pigment { color rgbt 1}  ]
>      [0.9  pigment { color rgbt <1,1,1,0>} finish { ambient 0.3 diffuse 
> 0.5
> }]
>    }  turbulence 0.8
>   scale 200
>  }
>  rotate 90*x
> }
>
> // Atmosphere
>
> sphere{<0,0,0>,1
>  pigment{
>    color rgbt <1,1,1,1>
>  }
>  hollow
>  interior {
>   media {    // atmospheric media sample
>    intervals 10
>    emission 0.75
>    density{
>      spherical
>      color_map {
>        [0 rgb <0,0,0>]
>        [1 rgb <0.1,0.1,0.5>]
>      }
>    }
>    samples 1, 10
>    confidence 0.9999
>    variance 1/1000
>    ratio 0.9
>   }
>  }
>  scale 2035
> }
>
>

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