Discrete and continuous gestures for enabling hand rays

Systems and methods are provided for selectively enabling or disabling control rays in mixed-reality environments. In some instances, a mixed-reality display device presents a mixed-reality environment to a user which includes one or more holograms. The display device then detects a user gesture input associated with a user control (which may include a part of the user's body) during presentation of the mixed-reality environment. In response to detecting the user gesture, the display device selectively generates and displays a corresponding control ray as a hologram rendered by the display device extending away from the user control within the mixed-reality environment. Gestures may also be detected for selectively disabling control rays so that they are no longer rendered.