Creating Detailed Terrain Models in Rhino 8 and Grasshopper
This video tutorial goes through the steps to create detailed terrain models from contour lines in Rhino and Grasshopper. This video uses contour map data from Digimaps. The key steps in this video can be found below:
00:00 - Introduction
00:08 - Data download from digimaps
04:20 - Opening Grasshopper
05:00 - Selecting the contour lines in Grasshopper
05:43 - Extracting points from the curve using 'Control Points' node
06.15 - Flattening the coordinate points
06:55 - Using the 'Delaunay Mesh' node to create a mesh
08:25 - Reducing the mesh density
10:06 - Using the 'Drape' command to create a surface
13:05 - Trimming the edges of the surface
14:02 - Extruding the surface into a 3D closed polysurface
16:15 - Turning this terrain into a drawing using the countour lines and the 'Make2D' command
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