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  3D Globe using JAVA  (Read 1646 times)
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Offline krypto

Junior Member




while(true) { self.caffeinate (); }


« Posted 2006-04-13 12:09:26 »

I want to implement a rudimentary Google Earth type app using JOGL. Where can I find info on how to model hte earth, I need to map textures to the globe, ect.
Any Ideas I where Ishould start looking?

Thanks;
Krypto

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Offline turquoise3232

Junior Member




Java (games) rock!


« Reply #1 - Posted 2006-04-13 15:38:18 »

Hi,

You draw a sphere, with quad or triangle strips and set texture coordiantes to match lat/long world coordinates.
To find an image to map on your sphere look at the Nasa blue marble page...
... it's only the starting point of a long way!
Offline rune.aasgaard

Senior Newbie




Java games rock!


« Reply #2 - Posted 2006-04-16 05:36:16 »

If you want to use more high resolution data over larger areas you'll have to learn quite a lot about "view dependent continuous level of detail surfaces", streaming of terrain data and out of core visualization.

For an example of how this may be have a look at: http://globe.sintef.no/ You'll find a few useful references in the documentation section http://globe.sintef.no/documentation/datasets.html. For another useful approach have a look at the "grand canyon demo" on the jogl pages.

I have also enyoyed the references found in the Vterrain pages: http://www.vterrain.org/

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Offline Mithrandir

Senior Member




Cut from being on the bleeding edge too long


« Reply #3 - Posted 2006-04-17 16:56:22 »

If you are interested in building an application over the top of such an infrastructure, you may want to check out the forthcoming X3DEarth project. This is a large project that is being driven by the Web3D Consortium to develop an open-standards based replacement for Google Earth. The initial technology release is targetted for this week at the Web3D Symposium and details should be up on http://www.web3d.org by the end of the week.

The site for 3D Graphics information http://www.j3d.org/
Aviatrix3D JOGL Scenegraph http://aviatrix3d.j3d.org/
Programming is essentially a markup language surrounding mathematical formulae and thus, should not be patentable.
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