Re: Planet Cloud Layer and Atmosphere Glow... 2004-06-15 - By jkyoutsey
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--- In Carrara@(protected), Harvey White <madyn@(protected)> wrote:
> On Tue, 15 Jun 2004 04:13:54 -0000, you wrote:
>
> >I've been messing with a planet texture. I've got the planet,
but
> >can't for the life of me figure out how to get the 3D cloud layer
> >(not just a layer on the planet itself) and the atmosphere glow.
> >Anyone got a tut or pointers on approaching this?
>
> This is a bit tricky. What you really want is a volumetric (true
3D)
> sphere for the atmosphere, and one for the clouds. Carrara does
not
> have them. Other than projecting clouds on the surface of a sphere
> (no depth, but good from a distance), there's not too much.
Texture
> map would do for the weather pattern, though.
>
> Best you can do is a volumetric cloud, about a little bigger than
the
> planet, then work with that. The atmospheric glow can be
simulated by
> putting a color in the glow channel of the sphere that you use for
the
> atmosphere.
>
> Harvey
I think I'll take a stab at the Aura modifier and see if that
helps.
I guess I should clarify what I was attempting. If you create a
sphere and set it's color to white and mix black and white in the
transparency channel using a cellular function with fractals it
LOOKS like it will make a nice cloud pattern. But it still totally
obscures the other sphere (the planet) beneath it. I don't get
enough transparency to see thru the "black" areas of the
transparency.
The more I play with Carrara the more I believe that almost anything
is possible (better particles PLEASE?!) So I'm not gonna give up on
this. When I figure it out I'll post the info...
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