Device and corresponding method for controlling electronic map to move horizontally

Abstract

The invention discloses a device and method for controlling an electronic map to move horizontally. The method comprises the steps that when an instruction for horizontally moving the map is received, a plurality of target tiles needing loading and displaying are found out; the pre-loading displaying grade is selected based on the current displaying grade, and pre-loading tiles corresponding to the target tiles are found out based on the pre-loading displaying grade; the pre-loading tiles and the target tiles are obtained according to a priority sequence, and the pre-loading tiles are loaded and displayed in an amplification mode according to the grade difference between the pre-loading display grade and the current display grade; after the target tiles are obtained, the target tiles are loaded and displayed to replace the amplified pre-loading tiles in the corresponding positions. By selecting the pre-loading displaying grade and loading and displaying the pre-loading tiles in the amplification mode, the blurry pre-loading tiles are rapidly displayed, and the effect of reducing the probability that blanks exist in an electronic map window when the electronic map is horizontally moved is achieved.

Description

technical field [0001] The invention relates to the technical field of electronic maps, in particular to a device and a method for controlling electronic map translation. Background technique [0002] At present, when the electronic map client pans the map according to the user's command to pan the map (see Baidu map, Tencent map and other electronic map network clients, the electronic map can be panned by clicking and dragging with the mouse), it needs to load the For multiple target tiles around the displayed tiles, it is necessary to request the target tiles from the server and perform image rendering on the target tiles. Therefore, when panning the electronic map, it takes a lot of time to display some tiles in time. tiles, there will be gaps in the electronic map window; when the network performance is poor, the gaps in the electronic map will be more obvious. Contents of the invention [0003] In view of the above problems, the present invention is proposed to provi...

AI Technical Summary

Problems solved by technology

[0002] At present, when the electronic map client pans the map according to the user's command to pan the map (see Baidu map, Tencent map and other electronic map network clients, the electronic map can be panned by clicking and dragging the mouse), it needs to load the The multiple target tiles around the displayed tiles need to request the target tiles from the server and perform image rendering and other processing on the target tiles. Therefore, when panning the electronic map, some of them cannot be displayed in time because it takes a lot of time. tiles, there will be gaps in the electronic map window; when the network performance is poor, the gaps in the electronic map will be more obvious

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