摘要:为了避免模型在专业软件之间反复导入导出，以及导出过程中的模型要素丢失问题，本文提出了一种基于动态视点的线性工程BIM(building information modeling，建筑信息模型)模型漫游视频制作的方法。首先阐述三维视点的基本特征，结合线性工程的特点，研究了漫游视频制作的总体技术路线；接着具体剖析了基于漫游视角需求的视点参数设置以及漫游过程中的视点生成方法；最后，以CATIA建模软件为基础平台，采用Automation的方式设计并开发了线性工程BIM模型漫游功能。实例表明，该程序能够实现漫游视频素材的自动导出，具有自动化程度高、方便高效、成本低的技术优势，有助于快速生成用于方案展示的视频成果。

Abstract: In order to avoid the repeated import and export of models between professional softwares, as well as the loss of geometric elementsduring the export process, this paper proposes a method for BIM roaming video of linear engineering based on dynamic viewpoints. First, the basic characteristics of 3D viewpoint are explained, and combined with the feature of linear engineering, the overall technical route of roaming video production is studied; then the viewpoint parameters based on roaming requirements and the method of viewpoint generation during the roaming process are analyzed in detail; finally, based on CATIA modeling software, the BIM roaming function of linear engineering is designed and developed by Automation. The example shows that the program can realize the automatic export of roaming video materials, and has the technical advantages of high automation, convenience, efficiency, and low cost, which helps to quickly generate roaming video for design display.