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

Thanks in advance

Gail
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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

http://www.btinternet.com/~consty/render/render_f.htm

--
David Fontaine  <dav### [at] faricynet>  ICQ 55354965
My raytracing gallery:  http://davidf.faricy.net/

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David Fontaine <dav### [at] faricynet> wrote in message
news:3A0A2B37.5805AA9C@faricy.net...

> http://www.btinternet.com/~consty/render/render_f.htm
>


I was actually looking for a way to create procedurally
a texture that looks like a planet's surface.

I have found a program that creates random planet imagemaps
( http://www.circuitpsyche.com/fracplan/  )
so the question is redundent.

Thanks anyway for your help.

Gail
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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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Matt Giwer <jul### [at] ijnet> wrote in message news:3A0DD6C8.C2A3624D@ij.net...

> 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.

I've found a couple of sites on perlin noise and 'm going to
play around with that for a while

> 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.

Interesting. thanks for the info

Gail
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* http://www.rucus.ru.ac.za/~gail/ * Reformat hard drive Y)es O)k  *
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