Construction of Data Parsing System Based on DGN File

摘要

A efficient data sharing system can not only accelerate the process of software development, the software itself will also be able to compensate for possible vulnerabilities which can greatly improve the quality of software. This paper analyses the storage characteristics and encoding principle of ISFF file format, using the dgnlib open source library to construct a data exchange system, realized data extraction and mapping for the DGN geometric, DRV property data correctly, final implementated model redraw and storage by our custom file format in actual project.