Processing method and processing device of polygonal plane

Abstract

The embodiment of the invention discloses a processing method of a polygonal plane. The processing method comprises the steps of acquiring the area of each polygonal plane in a first polygonal plane set corresponding to a first proportional scale; judging whether the area of each polygonal plane is greater than or equal to an area threshold corresponding to a preset second proportional scale or not; if so, storing the polygonal planes to a second polygonal plane set corresponding to the second proportional scale, wherein the first proportional scale is greater than the second proportional scale. The embodiment of the invention further discloses a processing device of the polygonal plane. The processing method and the processing device disclosed by the embodiment of the invention realize the purposes of improving the polygonal plane rendering efficiency and reducing occupation for the storage space at the same time.

Description

technical field [0001] The invention relates to the field of electronic maps, in particular to a method and device for processing polygonal surfaces. Background technique [0002] Electronic map (Electronic Map) is a map stored and consulted digitally using computer technology. Because the electronic map can conveniently and quickly view the maps under different scales, it has been widely used. The scale indicates the ratio of a line segment on the map to the actual length of the corresponding line segment on the ground, that is, scale = distance on the map / actual distance, the numerator of the scale is usually 1, and the larger the denominator of the scale, the smaller the scale. Generally, a map with a scale greater than one hundred thousandth is called a large scale map; a map with a scale between one hundred thousandth and one millionth is called a medium scale map; a scale smaller than one millionth is called a map. One of the maps is called a small-scale map. For th...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems in the prior art that the rendering efficiency of polygonal surfaces is low and takes up a lot of storage space due to the use of original detailed data to organize polygonal surfaces of different scales, the present invention provides a method and device for processing polygonal surfaces. To achieve the purpose of improving the rendering efficiency of polygonal faces and reducing the occupation of storage space

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