Lesson objectives: After completing this lesson, you will be able to: Defining outer boundaries in a large 3D surface improve the performance of a TIN Surface plan. The surface boundaries can be created with closed polylines. Boundaries are the features to define bounded 3D surfaces.Breaklines can be created from linear entities such as line, polyline, arc, circle. These lines also define the edges of triangles. Breaklines represent linear infrastructure features like curbs, retaining walls, etc. The surface triangulation is based on the Delaunay algorithm, which ensures that no point is inside the circumcircle of any triangle. All points are used to make a connection with the two nearest neighbours to create triangles. Points contain x, y coordinates, and z values. Overview: In BricsCAD, topographical surfaces are created using the TIN Surface (triangulated irregular network) tool.
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