管廊复杂网格参数化算法及其大规模在线渲染  

Parameterization of Complex Pipeline Meshes and Its Large-scale Online Visualization

作　　者：张惠娟[1] 刘帆 王冬青 贾金原[1] Zhang Huijuan;Liu Fan;Wang Dongqing;Jia Jinyuan(School of Software Engineering,Tongji University,Shanghai 201804,China)

机构地区：[1]同济大学软件学院,上海201804

出　　处：《系统仿真学报》2020年第8期1489-1497,共9页Journal of System Simulation

摘　　要：随着WebBIM(Web Building Information Modeling)技术的大力发展,建筑模型的复杂度与构件数量呈几何倍数增长,其中管廊复杂网格是影响模型轻量化和在线渲染速率的一个关键性问题。为有效减少管廊复杂网格模型的数据量及复杂度,针对一般圆柱体形管廊,复杂网格的弯管管廊模型及中空管廊网格模型,提出了一套轻量级参数化算法。该算法对场景中的管廊模型进行参数化重绘并辅助以多细节层次等视觉优化手段,以减轻WebBIM场景中的管廊模型渲染负担,其在拥有大量管廊模型的场景中应用成功,具有较强的工程实践意义。With the application of WebBIM technology in the field of large-scale building models,the complexity of models and the number of components are growing geometrically.The complex pipeline grid model is a key issue of affecting the lightweight of the BIM models and online rendering rate.In order to reduce the data volume and complexity of the complex pipeline meshes,a lightweight parameterization algorithm for the general cylindrical pipeline meshes,the curved pipeline meshes and also the hollow pipeline meshes is proposed.Redrawing the parameterized pipeline model and some visual optimization methods such as LOD technology being used reduce the rendering burden in the WebBIM scene.The application in the large-scale scene shows its significance in engineering practice.

关 键 词：管廊参数化 复杂网格 轻量化 WebBIM 大规模在线可视化 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]