Double rotate interactor
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
It would be cool to have an interactor that allows both rotate and roll. It would work by doing a rotate when dragging the mouse near the center of the screen and roll when dragging near the edge of the screen.
It is interesting to note that VisIt also has a dual rotate interactor. In theirs, the rotate or roll is controlled by the direction of the mouse. If you move the mouse radially from the screen center, it rotates. If you move the mouse tangentially from the center, it rolls.