基于Cesium的路基参数化三维建模方法

3D Parametric Modeling Method for Roadbed Using Cesium

针对高速公路三维可视化过程中,由于路基数量多且尺寸不一样,传统的路基三维建模方法需要耗费大量的人力和时间,开展基于Cesium的路基参数化三维建模方法研究。在分析Cesium参数化建模方法的基础上,基于Cesium API进行二次开发,通过PolylineVolume函数实现了路基横断面和公路中心线的快速生成,继而实现了路基三维模型的快速构建。为了方便路基横断面设计方案的检查与修改,利用JavaScript编码设计了路基标准横断面参数设计的界面,可以通过直接输入参数建立路基标准横断面,实现了路基标准横断面的快速构建。研究成果可以为交通规划部门在公路选线等方面提供决策依据。

For the 3D visualization progress of highway projects,considering that the roadbeds are always numerous in quantity and different in sizes,the traditional 3D modeling method of roadbed always costs a lot of manpower and time.Thus,this paper investigates the 3D parametric modeling method of roadbed based on Cesium.Based on the analysis of parametric modeling method using Cesium,the secondary development is carried out on the Cesium API to realize the rapid generation of roadbed cross section and center line of highway in the software by using Polyline Volume Function,which contributes to the realization of rapid 3D modeling of roadbeds.For the convenience of the inspection and modification of the design scheme for roadbed cross section,the JavaScript code is applied to create the interface of parameter design of the standard roadbed cross section.Then the standard roadbed cross section can be created by directly inputting parameters,which realized the rapid model generation of standard roadbed cross section.The research results are able to provide decision-making basis for traffic planning departments in highway route selection and in other aspects.