I'm trying to write my own camera manipulator and I'm having a difficult time figuring out how the current camera manipulators work.
I have read through source code for a number of the manipulator classes including FlightManipulator, FirstPersonManipulator, StandardManipulator, and CameraManipulator. I can't seem to track down the code that actually manipulates the camera. I see a bunch of instance variables being altered and GUIEventAdapters getting passed off to other methods, but I just can't seem to get down far enough in the code to see where the manipulation is occurring. I think I noticed a frame() method in one of the lower level classes - is this where all the data is used to compute new camera position and location? If so, how does that frame() method know to use the velocity, acceleration, pitch, yaw, etc that is built into subclasses like FlightManipulator? Any clarification about how the camera manipulator class structure works would be appreciated. Additionally, I am having difficulty understanding the use of quaternions in relation to the OSG coordinate system. If someone could point me towards some descriptive reference material on working in the OSG coordinate system I would appreciate it. Thanks. Matt ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=32416#32416 _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
