POV-Ray : Newsgroups : povray.general : Spherical Height fields? : Re: Spherical Height fields? Server Time
13 Aug 2024 15:29:13 EDT (-0400)
  Re: Spherical Height fields?  
From: Cliff Bowman
Date: 9 Aug 1998 14:00:07
Message: <35cdd637.3283170@news.povray.org>
On Sun, 09 Aug 1998 06:49:59 -0500, Dan Connelly <djc### [at] flashnet>
wrote:

>Bret Slivka wrote:
>> 
>> Hello group.
>> 
>> I'm working on a 3d model of the planet Earth. I am trying to figure out
>> how to take this elevation map, turn it into a heightfield and somehow
>> "wrap" this heightfield around a sphere. but i'm a little stumped, so I
>> thought I'd tap into the vast knowledge of this collective for guidance.
>
>Features on the surface are under 10 km.  Yet the equator-to-
>pole distance is 10 Mm --- 1000 to one.  Therefore for any
>real purpose the Earth is smooth -- use textures
>instead if you want anything approaching realism.
>
Erm...how about using the image as a bump map?
Cheers,

Cliff Bowman
Why not pay my 3D Dr Who site a visit at
http://www.geocities.com/Area51/Dimension/7855/
PS change ".duffnet" to ".net" if replying via e-mail


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