Reference to the current point updating the camera modification.
Reference to the initial point starting the camera modification.
Copy of a camera for ongoing camera modifications based on previous/initial camera settings.
The camera that is to be modified in response to various events.
Initiate a new panning at a specific event position.
Position of the current event to derive the magnitude for rotation from.
Update the panning transform w.r.t. a specific event position.
Position of the current event to derive the magnitude for translation from.
Actually applies the trackball rotation to the given camera.