MANIPULATION OF OVERLAPPING OBJECTS DISPLAYED ON A MULTI-TOUCH DEVICE

摘要

A multi-touch display device that is configured to display multiple objects concurrently and that provides multi-touch controls for manipulating multiple of the displayed objects with multiple degrees of freedom concurrently but independently is configured to reduce the degrees of freedom provided by the manipulation controls for at least two of the displayed objects in response to detecting that an input mechanism is exerting control over the two displayed objects concurrently.

主权项

1. A method performed by a multi-touch display device, the method comprising:
displaying at least a first object and a second object on the multi-touch display device; activating a multi-point input control providing at least four degrees of freedom that enables a user to translate the first object in two dimensions, rotate the first object, and scale the first object by engaging a surface of the multi-touch display device at one or more positions that correspond to one or more points within the first object; determining that a user input device is engaging the surface of the multi-touch display device; defining a region of influence of the user input device based on a position at which the user input device is engaging the surface; determining that the region of influence engages the first object; as a consequence of determining that the region of influence engages the first object, selecting the first object; receiving a change in the engagement of the user input device with the surface; as a consequence of the change in the engagement of the user input device, determining that the region of influence engages the second object concurrently with engaging the first object; and as a consequence of determining that region of influence engages the second object, selecting the second object.