Method and device for loading map annotations

Abstract

The invention provides a method and a device for loading map annotations. The method includes responding to a map amplifying instruction, and finding newly-increased points of interest in a current visible area of a map after being amplified relative to the map before being amplified; carrying forward annotations of original points of interest in the current visible area of the map before being amplified; performing collision detection and loading on annotations of the newly-increased points of interest. Compared with the prior art, the method and the device have the advantages that visual experience of users in the process of map loading can be improved remarkably.

Description

technical field

[0001] The invention relates to the field of electronic maps, in particular to a method and device for loading map annotations. Background technique

[0002] At present, in the field of electronic maps, when responding to zoom-in instructions, the annotations of all points of interest in the map, including the original point of interest and the newly added point of interest, will undergo collision detection and reloading. The so-called collision detection mainly refers to the Calculate to detect whether the positions of the labels of each POI and the labels of other POIs may overlap or intersect in the zoomed-in map. If there is overlap or intersection, the labels of some of the points of interest were accidentally collided (that is, the labels that were accidentally collided are no longer loaded into the enlarged map, so they cannot be displayed in the enlarged map) or their labels A large change in position causing its callout to flicker from disappearing ...

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