Hello Trole. I have a method that works well for me. The concept is to make the
moon white, but give it an ambient that is the same as the background color.
With a texture_map you can have a variance in the pigment's surface value. Here
is some code:

light_source{<100000,200000,0>,<1,1,.8>}

background{rgb<.3 .5 1>}

sphere{<0,20000,100000>,20000
 texture{bumps scale 3000 turbulence .75
  texture_map{
   [0 pigment{rgb 1}finish{diffuse .3 ambient<.3 .5 1>}]
   [1 pigment{rgb 1}finish{diffuse .5 ambient<.3 .5 1>}]
  }
 }
}

Trole wrote:

> I want to create something like picture on the entrance page of
> www.planetside.co.uk
> I want to create a moon (or two moons, or giant planet, whatever) over the
> landscape, behind the clouds. This is effect that you can see if the moon is
> visible during the daylight. You can see white halfmoon, with craters and
> stuff, and the other half in the color of sky.
> Is it possible without cheating (I mean no discs, Boolean objects and stuff
> like this)? I am aware that this effect is result of atmosphere's
> influence on light (the reason why the sky is blue). Can it be simulated in
> POV?

--
Samuel Benge

STB### [at] aolcom

"And you can fly
 High as a kite if you want to
 Faster than light if you want to
 Speeding through the universe
 Thinking is the best way to travel"

          -The Best Way to Travel, The Moody Blues

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