Handwriting circle selection method and device, touch device, and readable storage medium

Abstract

The invention discloses a handwriting circle selection method and device, a touch device, and a readable storage medium. The handwriting circle selection method includes: monitoring the circle selection operation on the target handwriting located on the display interface; connecting the touch points detected during the circle selection operation to generate a corresponding touch point corresponding to the circle selection operation Closed movement track: According to the intersection point of the straight line corresponding to each handwriting point of the target handwriting and the closed movement track and the trajectory angle corresponding to each intersection point, it is judged whether each of the handwriting points is located in the closed movement track inside of the track; judging whether the target handwriting is located inside the closed track according to the calculated number of the handwriting points located inside the closed track; when it is determined that the target handwriting is located in the closed track When inside, circle the target handwriting. By adopting the present invention, it is possible to reduce the difficulty for the user to select the handwriting on the screen and improve the user experience.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a handwriting circle selection method and device, a touch device, and a readable storage medium. Background technique [0002] In the prior art, when a user circles the handwriting in a touch screen device (such as an electronic whiteboard), after obtaining the circled track of the user, it is judged whether the user selects the handwriting through the following steps 1) to 7). Handwriting: [0003] 1) Connect the starting point and the end point of the circled track to obtain a closed circled track; [0004] 2) Make a straight line passing through a certain handwriting point in the handwriting, and obtain the intersection point between the straight line and the above-mentioned closed circle selection track; [0005] 3) judging whether the number of intersection points distributed on the left side or the right side of the above-mentioned handwriting point in the above-mention...

AI Technical Summary

Problems solved by technology

[0010] By performing the above steps 1) to 7), the user can obtain the result of circle selection of handwriting, but the existing technology is not applicable to all circle selection situations, such as figure 1 As shown in , it is a schematic diagram of an inapplicable circle selection situation

exist figure 1 In , the handwriting is located inside the circle selection track. Theoretically, the user has selected the handwriting. However, if the judgment is made according to the above steps 1) to 7), the opposite circle selection result will be obtained

It can be seen that, due to the loopholes in the judgment logic in the prior art, there will be a phenomenon that the user cannot select the handwriting despite clearly circled the handwriting. Easy to bring bad user experience

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