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





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