Hi Richard, You seem to have a lot of the pieces already sort of in place. I'm not sure exactly what you're asking... but here goes.
To have something render, you want to create an object of class osgViewer::Viewer. Then you need to add data (your scene graph) to the viewer using setSceneData(osg::Node*). In your case, this will be the PositionAttitudeTransform node (vectorOrient), which has the update callback attached and the geode (lineVector1) as a child as you've already done. Then you need to call viewer.run(), or create a loop with viewer.frame() within it. In the callback, it sounds like you want to set the attitude(rotation) of the PAT node. So, instead of calling setPosition(Vec3), you want to use setAttitude(Quat). The Quat class has a makeRotate method which creates a quaternion to rotate from one vector to another. So you want to have two vectors, one which points in the initial direction of the line you want to draw (defined when you created the geometry) and the other which points in the desired direction depending on your dynamic data. Once you have those vectors, do moveVector->setAttitude(osg::Quat::makeRotate(initial_vec, final_vec)). Hope that helps you get started, Tom ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=35879#35879 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
