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3 Dimensional Chat / Texture mapping a planet

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Robert The Robot
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Joined: 8th Jan 2007
Location: Fireball XL5
Posted: 22nd Oct 2009 22:11 Edited at: 22nd Oct 2009 22:11
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I'm trying to build 3d models of the various planets in the Solar System, but I'm struggling with the texture mapping. The image I'm using was downloaded from the Celestia Motherlode site, a low-res version is attached.

The image appears to have been made using cylindrical projection, but when I try to apply it to a sphere (using LithUnwrap, cylindrical projection, no spacing, uncapped) the north and south poles turn to a disjointed blur.

I know that a few people on here have made solar system simulators - if anyone could send me a UV-mapped sphere model, I'd be most grateful!

"I wish I was a spaceman, the fastest guy alive. I'd fly you round the universe, in Fireball XL5..."

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Quik
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Joined: 3rd Jul 2008
Location: Equestria!
Posted: 22nd Oct 2009 22:28
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we had a thread with this a few months ago, u should use the search button and search it^^


[Q]uik, Quiker than most
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Robert The Robot
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Location: Fireball XL5
Posted: 24th Oct 2009 17:14
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I did serach for it, but the one I found referred to a Photoshop/Gimp plugin to change and distort the 2D texture to fit the sphere - I'd like to leave the texture unchanged, and just have a sphere display it proprly. Is it even possible?

"I wish I was a spaceman, the fastest guy alive. I'd fly you round the universe, in Fireball XL5..."
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gbark
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Location: US - Virginia
Posted: 5th Nov 2009 03:55
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What kind of sphere are you using? I'm assuming not like a geo-sphere, but a sphere where the top and bottom conjoin into points with triangles.

For me, I can use a default sphere in a program like MilkShape 3D, and it works perfectly using the kind of textures that you posted, without having to specify any further UV mapping.
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CoffeeGrunt
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Location: England
Posted: 6th Nov 2009 21:48
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As far as I know, in the newsletter and on Spore, they use 6 different textures for the planets...

Violence isn't the answer, it's the question...
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