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  Scenegraphs  (Read 982 times)
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Offline SluX

Junior Member





« Posted 2006-03-03 16:54:13 »

Can any1 tell me what is the right definition of scenegraph?What should it contain?

Any clarification is welcome.

Tnx.

"Intelligence is the most beautiful gift and the greatest temptation which one life can receive from the gods."Me Cheesy
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Offline jbanes

JGO Coder


Projects: 1


"Java Games? Incredible! Mr. Incredible, that is!"


« Reply #1 - Posted 2006-03-03 16:58:11 »

Short Explanation: A scene graph is the 3D objects you want to render. The graph automatically shunts the polys to an API like OpenGL every frame.

Long Explanation

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Last Journal Entry: 12/17/04
Offline SluX

Junior Member





« Reply #2 - Posted 2006-03-03 21:27:14 »

Tnx m8.

"Intelligence is the most beautiful gift and the greatest temptation which one life can receive from the gods."Me Cheesy
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Offline Jeff

JGO Coder




Got any cats?


« Reply #3 - Posted 2006-03-04 00:17:35 »

Yes.  really when people say "A scene graph" the really mean "A scenegraph API".

A scene graph is a tree of transforms that describes the scene or part of the secene to be rendered.

A scene graph API is an API for building that graph and then getting it translated to what the graphcis card really neeeds, which is lists of transform, polygons and render parameters..

Got a question about Java and game programming?  Just new to the Java Game Development Community?  Try my FAQ.  Its likely you'll learn something!

http://wiki.java.net/bin/view/Games/JeffFAQ
Offline SluX

Junior Member





« Reply #4 - Posted 2006-03-05 21:43:00 »

Do u know some good texts about it-those who explain it in more detailed way...maybe some code and stuff like that.

"Intelligence is the most beautiful gift and the greatest temptation which one life can receive from the gods."Me Cheesy
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Offline jbanes

JGO Coder


Projects: 1


"Java Games? Incredible! Mr. Incredible, that is!"


« Reply #5 - Posted 2006-03-05 23:03:57 »

Do u know some good texts about it-those who explain it in more detailed way...maybe some code and stuff like that.

My first question is, are you familar with OpenGL programming? Because once you are, scenegraphs follow naturally. You generally only feel like drawing individual polygons for so long before you start wanting the pipeline the suckers. Decontructing 3D models into their component polys for rendering after checking their visibility  is the easiest way to do that.

If you want code, Java3D, Xith3D, and jMonkeyEngine are all Open Source.

Java Game Console Project
Last Journal Entry: 12/17/04
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