Terrain for AutoCAD - Version 1.0 Terrain for AutoCAD is a terrain modeling plug-in for AutoCAD. This plug-in gives AutoCAD the ability to create a terrain mesh from a set of unordered points. The terrain mesh is created as a Delaunay Triangulation. Terrain for AutoCAD can also import a set of points from a text file containing point coordinate data along with point numbersand point descriptions.