Three-dimensional vector data slicing method, device and electronic equipment for three-dimensional vector map

Abstract

The embodiment of the present invention provides a method and device for slicing three-dimensional vector data of a three-dimensional vector map, which acquires the three-dimensional vector data of the three-dimensional vector map to be sliced; determines the multiple scale levels of the preset three-dimensional vector map and cuts under each scale level The number of map tiles; for each scale level, based on the two-dimensional geographic coordinate range covered by the three-dimensional vector map and the number of map tiles at this scale level, determine the two-dimensional geographic coordinate range covered by each map tile; for For each scale level, based on the two-dimensional geographic coordinate range covered by each map tile of the scale level, the three-dimensional vector data is segmented to obtain three-dimensional vector sub-data blocks corresponding to the map tiles of the scale level one by one. It can realize the slice processing of the three-dimensional vector data of the three-dimensional vector map.

Description

technical field [0001] The invention relates to the technical field of electronic maps, in particular to a three-dimensional vector data slicing method, device and electronic equipment for a three-dimensional vector map. Background technique [0002] A vector map is a map obtained by representing geographical roads, rivers, or buildings through geometric elements such as points, lines, and polygons. [0003] At present, the slicing technology of vector maps has been widely used. Specifically, the vector data of the vector map is sliced ​​and saved, and in the process of drawing the vector map at the front end, the vector data of the required partial slices can be directly called for drawing. [0004] However, the existing vector map slicing techniques are all aimed at two-dimensional vector maps and cannot be applied to three-dimensional vector maps. [0005] It can be seen that there is an urgent need for a method capable of slicing the three-dimensional vector data of th...

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Problems solved by technology

[0004] However, the existing vector map slicing techniques are all aimed at two-dimensional vector maps and cannot be applied to three-dimensional vector maps

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