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所在平台: Udemy |
课程主页: https://www.udemy.com/course/civil-3d-2023-to-2024-surface-essentials/
课程评论：没有评论
**Civil 3D 曲面基础** 本课程主要介绍 Autodesk Civil 3D 中曲面的概念、创建和编辑。 **核心内容：** * **曲面定义：** 曲面是三维空间对地块的几何表示，体积曲面则表示两个曲面区域之间的差值或组合。 * **曲面构建：** Civil 3D 通过连接构成曲面数据的点来生成三角形或网格，这是曲面的基本组成部分。 * **数据填充与导入：** 可以创建空曲面并填充数据，也可导入包含曲面数据的文件（如 LandXML、TIN、DEM）。 * **曲面数据构成：** 曲面的基础数据通常包括点和等高线，并可通过细部高程线（breaklines）和边界（boundaries）进行补充。 * **边界与掩膜：** 边界界定了曲面的可视范围，并影响面积和体积计算。掩膜（masks）可用于隐藏或显示特定区域，便于编辑或展示，同时这些区域仍会被纳入计算。 * **细部高程线：** 在 TIN 曲面上，细部高程线用于标识三角形无法穿过的线性特征（如挡土墙、溪流），直接影响曲面三角化。 * **曲面显示与编辑：** 可以创建不同间距的等高线，并通过平滑整个曲面获得更好的显示效果。 * **曲面更新与管理：** Civil 3D 中的曲面构建过程是渐进式的，新数据或更新数据会实时更新曲面。每个曲面都有一份定义列表，记录了所有的操作。通过启用或禁用这些操作，可以改变曲面以适应不同的分析需求，或恢复到之前的状态。
An area of land is represented geometrically in three dimensions as a surface, or in the case of volume surfaces, as a difference or composite between two surface areas.When Autodesk Civil 3D links the points that make up the surface data, it produces triangles or grids, which are the building blocks of surfaces.You can make a surface that is empty and then fill it with data to use it in your drawing. Additionally, you can import pre-existing files containing surface data, including LandXML, TIN, or DEM files.The fundamental components of the initial surface information are often points or contours, which are augmented by breaklines and borders.A surface's viewable area is determined by its boundaries. When calculating things like total area and volume, only the space inside the boundary is taken into account. Masks can be created to hide or reveal specific areas of a surface for editing or presentation needs while still accounting for those areas in computations.On TIN surfaces, breaklines are used to identify linear features, such as retaining walls and streams, that triangles cannot cross. Surface triangulation is impacted by breaklines.For instance, you can create various sets of contours for various intervals. The results are better when the surface object is smoothed as a whole rather than just the contours. The build procedure for surfaces in Autodesk Civil 3D is gradual. The surface is updated as new or updated data is added. Definitions are listed for each surface. All of the operations carried out on the surface are included in this list. You can change a surface to accommodate different sorts of analysis or restore it to a prior condition by turning the operations on and off.
