建设工程规划用地测绘成果分发系统实现

Realization of Surveying and Mapping Results Distribution System for Planned Land Use of Construction Projects

开发出建设工程规划用地(拨地)测绘成果分发系统,用户通过绘制范围或输入拨地号对数据内容进行请求,服务器端根据请求内容从Oracle数据库中调取相应坐标点和属性信息,并自动生成用于AutoCAD绘图交换文件(Drawing Exchange Format,DXF)图形文件供用户下载。文中阐述了图形生成工艺和凸度算法,实现了DXF文件中图层建立、图形绘制、文字注记、属性信息生成功能,并解决了多段线中圆弧部分绘制问题。利用本功能,工程人员可以直接在AutoCAD软件中加载周边已有拨地数据和历史拨地数据进行参照,极大地提高了工作效率和成果的准确度。

In this paper,based on the relevant technology,the Surveying and mapping results distribution system for planned land use(land allocation)of construction projects was developed.In the system,the user requested the data content by drawing the range or the project ID,the server extracted the corresponding coordinates and attribute information from the ORACLE database according to the request content,and automatically generated DXF graphical files for users to download.In this paper,the graphic generation process and convexity algorithm of system was introduced,the functions of layer establishment,drawing,text annotation and attribute information generation in DXF file were realized to solves the problem of drawing arc part in polylines.With these functions,the existing land allocation data and historical land allocation data in AutoCAD software could be directly load for reference,which greatly improved the work efficiency and the accuracy of the results.