METHOD OF ROTATING A PICTURE WITH A MOBILE TERMINAL AND MOBILE TERMINAL

摘要

A method and a smart terminal for rotating a picture are disclosed. The method includes steps of: detecting, by the smart terminal, that a touch operation applied on the picture displayed on a screen of the smart terminal includes at least two touch points, and, when a trajectory of each of the at least two touch points is an arc, determining the touch operation to be an operation of rotating the picture, and rotating synchronously the picture in accordance with the rotation direction of the trajectories and the rotation angle. By the aforementioned means, in the present disclosure the picture can be quickly rotated to the desired angle of the user, thereby enhancing the user experience.

主权项

1. A method of rotating a picture with a smart terminal, comprising:
detecting, by the smart terminal, that a touch operation applied on the picture displayed on a screen of the smart terminal comprises at least two touch points, and, when a trajectory of each of the at least two touch points is an arc, determining the touch operation to be an operation of rotating the picture; determining, by the law of cosines, a rotation angle of the touch operation in accordance with the trajectory of each of the at least two touch points; determining whether the rotation angle exceeds a threshold angle value; and when the rotation angle exceeds the threshold angle value, synchronously rotating the picture in accordance with a rotation direction of the trajectories and the rotation angle.