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3 Dimensional Chat / Sky Sphere Creation

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ArcAngel
21
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Joined: 18th Oct 2003
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Posted: 10th Jul 2005 04:41
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How can I make my own sky sphere's? Is there free software that I can use? I guess I can do it manually inside DB Pro, but i don't know how to texture the inside of the sphere instead of the outside... I'd rather do it using some software to make my program less hairy. Thanks.

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gpex
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Posted: 11th Jul 2005 04:54 Edited at: 11th Jul 2005 04:55
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i use DeleD lite, it's really easy to use and its free. I would also suggest using skyboxes as they usually prove more effective.


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-gpex-

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actarus
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Location: 32 Light Years away
Posted: 12th Jul 2005 22:39 Edited at: 12th Jul 2005 22:40
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4 steps only:

-Fire up your 3d app and create a CUBE

-Add a Cube UV Mapping and a flat sky texture

-Smooth/Meshsmooth 1 time(24 polygons) or 2 times(96 polygons)

-Flip/Inverse it

Depending on the game you're making,you wouldn't need the bottom part of it so that's even less polygon if you end up with a dome...

It's not a problem to delete the polygons AFTER the texture mapping.

BlackBird thinks he owns the sky,
But he can't look me in the eye,
-Andy Bell
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ArcAngel
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Posted: 13th Jul 2005 01:24
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How are sky boxes more effective?
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Blazer
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Joined: 22nd Oct 2002
Location: United States
Posted: 13th Jul 2005 08:48 Edited at: 13th Jul 2005 08:49
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less polygons, also you can use Terragen. I think it's freeware, google it. Terragen makes a very detailed sky then you take screenshots of it at the right angles and you paste them on your sky box.

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geecee3
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Posted: 13th Jul 2005 10:08
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while sky boxes have less polys, they do tend to need more in the way of memory and consume a lot more GPU time to process. Van B has a sky sphere tool I think, search these forums.

Grant.

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Sid Sinister
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Joined: 10th Jul 2005
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Posted: 13th Jul 2005 12:39
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Thanks, that helped
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dark coder
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Joined: 6th Oct 2002
Location: Japan
Posted: 14th Jul 2005 20:44
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well skyboxes tend to use 6 images, usually 512^ whereas skyspheres use 1 texture maybe 1024^ sometimes 2048^ so if you had your skysphere use the same ammount of images and sizes as a skybox then the skybox would run faster, another plus about skysphere is the fact that is its a sphere so you will have less problems with camera range, and you wont get crappy seams on the outsides as you tend to get with a skybox, and finally skyboxes are shaped like a cube so the each corner is further away from the camera so they have a perspectave thus to make a realistic skybox youd have to either use a program such as terragen that gets the 6 images for each side as using a camera it does the perspectave issues for you, else youd end up with it looking slightly steatched towards the ends, a skysphere you wouldent have this problem because most of the sides would be relatively the same distance from eachother depending on how many sides it has.


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