Patent attributes
Methods, systems, and apparatus, including medium-encoded computer program products, for controlling a virtual camera in a three dimensional environment displayed on a two dimensional touchscreen display of a handheld mobile computing device include: rendering a camera-control user interface (UI) element in a portrait mode UI; receiving first input indicating contact with the UI element, and then receiving second input indicating movement of the maintained contact point; rotating the camera view around a targeted location responsive to the second input indicating movement along a first axis of the UI element; zooming the camera view in and out from the targeted location responsive to the second input indicating movement up and down along a second axis of the UI element; and rendering changes to which portion of the three dimensional environment is shown from which perspective responsive to changing the camera view while the second input is received.
