[osg-users] "hooking" into the Trackballmanipulator transform

[Andrew Cunningham]

Hi,
I need to "hook" into the TrackballManipulator to provide feedback to the user. As the user rotates the model, I want to get the matrix and extract Euler angles.
I'm stuck at how to get notified when the when the view matrix changes. Should I derive a new class from TrackballManipulator ?

OSG 3.4.1 
Thanks
Andrew

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