I apologize for a late response.... (See below).



"Marc Jacquier" <jac### [at] wanadoofr> wrote:

> news:web.41e42180830ae0179011d8b10@news.povray.org...
> > ok, not sure what to put for subject... it's just our home planet... I
> think
> > I'm getting closer to the final that I want....
> >
> > btw... I found a whole sleu of science fiction planets, and all of their
> > cloud maps are JPEG, and it seems like a lot of work to convert them to
> > PNG, invent their alpha clouds and merge them into the cloud image.  Does
> > anyone know a work-around that I may use the original JPEG clouds, having
> > transparency in the cloudless parts to see the land surface, without
> having
> > to convert them?
> >
> Nice!!
>  to use jpg clouds with transparency, you could try with image_pattern (code
> not tested, I'm running a 10 days render)
>
>    pigment
>    {
>       image_pattern
>       {
>             jpeg   "your_image.jpg"
>       }
>       pigment_map
>       {
>          [0.0               color rgbt 1  ]
>          [1.0               color rgb 1         ]
>       }
>    }
>
>
>
> HTH
>
> regards
>
> Marc

Hi, Thanks for this tip!  Although I was hoping to avoid this paleted
situation, for now it seems like the way to go.  I don't know of any
multi-colored cloud situations on any planet... and even looking at planet
Jupiter, multicolored, are really multi-layered, and applying a different
layer with a different color scheme should work (I think).

And...

> Have you tried adding in the city lights on the nightside?
>
> Rarius

I'm still working on the planet, and I do plan to address that issue, as
well as reflective water....

Ron

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