基于Web的隧道场景建模与实时绘制  

Tunnel Scene Modeling and Real-time Rendering Based on Web

作　　者：陈国军[1] 滕一诺 宋华婷 姜朕 隋晓燕 CHEN Guo-jun;TENG Yi-nuo;SONG Hua-ting;JIANG Zhen;SUI Xiao-yan(School of Computer Science and Technology,China University of Petroleum(East China),Qingdao 266580,China)

机构地区：[1]中国石油大学(华东)计算机科学与技术学院,山东青岛266580

出　　处：《计算机技术与发展》2021年第11期153-158,共6页Computer Technology and Development

基　　金：山西省科技计划(交通建设)项目(2019-2-8)。

摘　　要：隧道场景模型复杂、数据量大,导致隧道BIM系统的Web应用发展缓慢。对基于Web的隧道场景建模和实时绘制的相关技术进行研究,根据隧道路线和洞身结构的特点,建立隧道横断面参数序列模型,实现施工数据驱动的隧道参数化建模。提出基于Shader的三角网的布尔运算,通过地形裁剪和裂缝修补进行隧道场景的碰撞处理,实现隧道洞口与地形的无缝融合。结合地形的分段三角网数据建立客户端缓存机制及基于视点动态调度,建立本地缓存数据库减少模型数据量的传输和处理,实现隧道施工场景的实时绘制。实验结果表明,依据该方法建立的隧道施工可视化系统提高了响应和绘制效率,实现了基于Web的隧道施工过程的虚拟仿真,展现了较真实的施工场景。The complex tunnel scene model with large amount of data lead to the slow development of the Web application of tunnel BIM system.The relevant technologies of tunnel scene modeling and real-time rendering based on Web are studied.According to the characteristics of tunnel route and tunnel structure,the tunnel cross-section parameter sequence model is established to realize the construction data-driven tunnel parameterized modeling.The Boolean operation of triangulation network based on Shader is proposed,and the collision processing of tunnel scene is carried out through terrain cutting and crack repair,so as to realize the seamless fusion of tunnel entrance and terrain.Combined with the terrain segmenting triangulation network data,the client cache mechanism and viewpoint based dynamic scheduling are established,the local cache database is established to reduce the transmission and processing of model data,and the real-time rendering of tunnel construction scenes is realized.The experiment shows that the tunnel construction visualization system established according to the proposed method improves the response and rendering efficiency,showing a more real construction scene.

关 键 词：隧道BIM 场景建型 碰撞处理 施工可视化 本地缓存 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]