Terrain for AutoCAD
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 for AutoCAD is powered by PointLib, a state of the art terrain modeling library developed by SYCODE. ... 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.
http://www.sycode.com/installers/terrain_ac.exe - 2Mb - Download - Screenshot