With the advancement of the three-dimensional (3D) modeling techniques in the recent decade, civil infrastructure design (CID) has been used to produce large-scale 3D infrastructure models that contain a large set of 3D models with a significantly large number of vertices. In the meantime, such large-scale data necessitates a higher requirement for efficient data processing techniques. Two-dimensional (2D)-plane cutting is one of the basic techniques used to observe and analyze 3D models in CID. This paper presents an efficient cutting scheme for a section view of large-scale 3D infrastructure models in CID. The proposed cutting scheme contains a pipeline of locating the intersected faces, computing the intersection points, and the polygon triangulation for visualization. Furthermore, an optimized data structure is introduced to realize the parallel implementation of the efficiency cutting scheme. After integrating to our existing 3D design and visualization platform, the experimental results with different 3D infrastructure model datasets, such as the large-scale electrical substation models, have demonstrated both the effectiveness and the efficiency of the proposed cutting scheme.

中文翻译：

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一种高效的大型基础设施模型剖面图切割方案

随着近十年来三维 (3D) 建模技术的进步，土木基础设施设计 (CID) 已被用于生成包含大量具有大量顶点的 3D 模型的大型 3D 基础设施模型. 同时，如此大规模的数据对高效的数据处理技术提出了更高的要求。二维 (2D) 平面切割是用于在 CID 中观察和分析 3D 模型的基本技术之一。本文为 CID 中大型 3D 基础设施模型的剖面图提出了一种有效的切割方案。所提出的切割方案包含用于定位相交面、计算交点和用于可视化的多边形三角剖分的管道。此外，引入优化的数据结构，实现高效切割方案的并行实现。在集成到我们现有的 3D 设计和可视化平台后，使用不同 3D 基础设施模型数据集（例如大型变电站模型）的实验结果证明了所提出的切割方案的有效性和效率。