In article <39a4ce9b@news.povray.org>, "GrimDude" 
<vos### [at] yahoocom> wrote:

> Okay. You may have the time to work out a pattern to emulate Saturns
> appearance, but I'd use a NASA image. ;) j/k, but really...
> 
> In the case of working something like Saturn out, I probably would 
> not have Saturn as the primary object (and using an image map). If, I 
> did, I would *have* to use procedural techniques, else sacrifice 
> control of the scene.
> Relying on a NASA atmospheric/time lapse image series, for instance, 
> would not work on a close up, or nap-of-the-surface flyby.

Saturn itself does not look difficult to texture procedurally...the 
rings would be more of a challenge, but still a simple problem if done 
with procedural textures. It might be more difficult to get an image_map 
right. :-)
Now, a planet like Earth, with oceans, continents, ice caps, and many 
different weather formations, would be very difficult to do 
procedurally. I still would avoid directly using image_maps though...I 
would try the pigment pattern using a grayscale image to map different 
procedural textures to different areas.


> On my P-51D, I used image maps for the insignia, but they were 
> created within Pov (separate sources).

That sounds like a good way to do things...


> I *did* post process a lot of them, in order to limit color counts (I 
> prefer 2-16 color images), specify transparency, etc. There is 
> probably a way to use Pov to do even that! :)

Why do you prefer such low color depths?

-- 
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/

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