Pie Menus with valuators: Pie Menus may be used as input to linear valuators. The direction selects between slices containing valuators. A valuator's input is the distance of the Pie Menu selection, as well as the angle between the selection and the center of the selected slice. A valuator outputs a value scaled or transformed to whatever representation is needed. A valuator could use two opposite slices, to set negative and positive values. Because of the dead zone in the middle of the pie menu, that does not select any valuators, there could be an zero zone in the active, innermost parts both slices of such a valuator.