1. A system comprising: a detector constructed to receive absolute three-space location data of an object within a coordinate space of a room; a gestural interface coupled to the detector, wherein the gestural interface is constructed to detect a gesture from the received absolute three-space location data and generate a gesture signal corresponding to the gesture; and a graphics interface coupled to the gestural interface and coupled to a display, wherein the graphics interface is constructed to control rendering of data on the display according to the gesture signal, wherein the detector is constructed to detect an evolving absolute three-space location of the object within the coordinate space of the room, wherein the gestural interface is constructed to generate an updated gesture signal corresponding to the evolving absolute three-space location, and wherein the graphics interface is constructed to update rendering of data on the display according to the updated gesture signal.