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, lines, polylines and splines. The terrain mesh is created as a Delaunay Triangulation, which is regarded as the best method to create a terrain mesh from unorganized point data. Terrain for AutoCAD can also import a set of points from a text file containing point coordinate data along with point numbers and point descriptions. Terrain for AutoCAD is powered by PointLib, a state of the art terrain modeling library developed by SYCODE. Terrain for AutoCAD is designed to be extremely user friendly and easy to use. The plug-in adds a new command to AutoCAD called Terrain. The Terrain command has a single parameter called Search Radius. The search radius determines the whether two points can be part of the same triangular face. If the distance between two points is larger than the search radius then they are not connected by a face. A search radius of zero will remove the connectivity constraint and all points will be connected, however far they may be from each other.

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