1. A computer implemented method of defining and controlling multiple virtual cameras in a three dimensional (3D) sensor space, the method including: detecting circular sweeps in response to control gestures of a control object in a three dimensional (3D) sensor space, wherein each of a circular sweep of the detected circular sweeps has a center point and a direction vector; constructing multiple virtual cameras for the 3D sensor space using the detected circular sweeps, wherein each of a virtual camera of the multiple virtual cameras is situated at a respective center point of a respective circular sweep and has a field of view in a direction indicated by a respective direction vector of the respective circular sweep; assigning each of the virtual cameras a virtual camera checkpoint, that includes information for setting a camera perspective and designating a particular virtual camera selector, from an array of virtual camera selectors displayed in the 3D sensor space using one or more control gestures; selecting a particular virtual camera in response to selection of a corresponding virtual camera selector in the 3D sensor space; and controlling the particular virtual camera by modifying the information included in the checkpoint assigned to the particular virtual camera using one or more control gestures.