High-performance rendering method and device for urban information model and storage medium

Abstract

The invention discloses a high-performance rendering method and device for an urban information model and a storage medium. The high-performance rendering method comprises the steps: constructing a tile pyramid according to geographic information data in the urban information model, so as to obtain tile data, wherein the geographic information data comprises terrain data, point cloud data and oblique photography data; obtaining a visible region range and a display scale in the current rendering window; acquiring tile data, point cloud data, oblique photography data and BIM data in the visibleregion range; judging the size relationship among the display scale, a first threshold value and a second threshold value; and respectively deploying rendering processes of the tile data, the point cloud data, the oblique photography data and the BIM data in the visible region range at a front end and a rear end according to the size relationship among the display scale, the first threshold valueand the second threshold value. By adopting the high-performance rendering method and device, the rendering time can be effectively reduced, and the rendering efficiency is improved, so that rapid andsmooth use experience is provided for users.

Description

technical field [0001] The invention relates to the technical field of geographic information, in particular to a high-performance rendering method, device and storage medium of a city information model. Background technique [0002] BIM is a kind of building information model, which is based on the cost, progress, safety quality, material and equipment information in the project construction, and simulates, simulates and applies the construction building model by means of the data simulation of the engineering entity data of the construction project. . The theory and practice of BIM technology in China are constantly improving, and its application in project implementation is becoming more and more frequent. However, with the continuous advancement of smart city construction, the demand for the expression, analysis and management of large-scale three-dimensional spatial information in the city has become more and more urgent, but most single building engineering data based...

AI Technical Summary

Problems solved by technology

However, the inventor found in the process of implementing the present invention that because a single front-end rendering needs to retrieve a large amount of data from the back-end for processing, and the city information model carries a variety of data at the city-scale level, its data volume has reached GB , TB level, when the display scale of the current rendering window is at a large or medium scale, more details need to be displayed in the scene, but due to the limitation of the front-end performance, the rendering pressure of the front-end is high, and rendering bottlenecks are prone to occur, causing freezes or delays, etc. The problem is that the rendering time is long, the rendering efficiency is low, and it cannot provide users with a fast and smooth user experience.

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