HI Allen,
viewer.frame() calls viewer.updateTraversal(), and viewer.run() calls
viewer.frame() so your suggest frame loop would only call
updateTraversal() twice.
Instead to expand viewer.run() -> a frame loop with it's component
parts you do (please look at the implementation itself to confirm
this):
while(!viewer.done())
{
viewer.advance();
viewer.eventTraversal();
viewer.updateTraversal();
viewer.renderingTraversals();
}
You can of course insert your own updates into this frame loop, or
just use an update callback on a node.
Robert.
On Mon, Apr 20, 2009 at 9:21 PM, Allen Saucier <[email protected]> wrote:
> Hey,
> here's the article Paul is speaking about:
> http://forum.openscenegraph.org/viewtopic.php?t=2190
>
> I'm one of the guys in that discussion. I asked how to modify a line
> dynamically.
>
> Since you're using viewer.run(), that makes life difficult. I believe you'll
> need to use the viewer frame loop instead. Something like:
>
> viewer.setSceneData(rootnode.get());
> viewer.realize();
>
> while (!viewer.done())
> {
> viewer.updateTraversal();
> viewer.frame();
> }
> return 1;
>
>
> The above code allows you to put calls w/in the while loop that will modify
> your cones/cylinders etc... by changing the states of the cones or modifying
> their colors.
>
> Hope this helps.
>
>
> Here's a great place to start:
>
> http://www.openscenegraph.org/documentation/NPSTutorials/
>
> http://www.cs.umu.se/kurser/TDBD12/VT04/lab/osg/html/examples.html
>
> http://www.cs.clemson.edu/~malloy/courses/3dgames-2007/tutor/index.html
>
>
> http://www.palomino3d.com/pal_com/openscenegraph/
>
> ------------------------
> Allen
>
> ------------------
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=10477#10477
>
>
>
>
>
> _______________________________________________
> osg-users mailing list
> [email protected]
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>
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