Gail Shaw wrote:
> 
> Does anyone have any hints/tips on generating
> an earth-like planet in pov. Specifically continents
> and islands with appropriate colours and clouds that
> look reasonably realistic.
> 
> I've seen a couple of examples in p.b.i but I'm not sure
> how they were done (image map or procedural)
> and I haven't had much success in creating a reasonable
> looking planet

	I've been using image maps but like Blue Mars, even though from real
data, a heightfield with water is procedural. There are a ton of
heightfield programs. 

	For the images of earth, the way I have created clouds is with a
thresholded fractal plasma with a graphics program. That produces
"clustered noise" vice random. I have seen a procedural plasma routine
but I don't remember where. 

	Hint: In playing around with the image maps, I found inverting color
and flipping the image made even earth hard to recognize. So if it is
hard to get a good one procedurally you can use the good ones more than
once. 

-- 
A coward dies a thousand deaths, a hero dies
but one. Those sound like pretty good odds to me.
     -- The Iron Webmaster, 9

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