Optimization design on model loading and rendering of underground cavern group based on Web
In order to reduce the rendering pressure caused by large-scale 3D scenes to WebGL pipeline,the dynamic loading strategy of the 3D scene was adjusted and optimized according to the structure and distribution characteristics of the underground cavern group.By comparing and analyzing the LOD process in BIM and GIS fields,a dual LOD process mechanism considering both the level of detail and the level of development of the model was designed.In addition,by studying the structural characteris-tics and spatial division of the traditional pyramid index,a spatial index structure which can automatically adjust the boundary was designed by integrating various tree structures.A dynamic scheduling algorithm based on progressive loading was proposed.The test results show that this method can improve the rendering efficiency and stability of large-scale BIM models in WebGL.
国家科技期刊平台
NSTL
万方数据
维普
