ceometric presents a new version of the ComputationalCAD for AutoCAD add-on. This high performance add-on supports
- terrain modelling (triangulations, contours, profiles, surface slicing, projections and more)
- convex hulls in 2d and 3d
- surface reconstruction from unordered wireframe data
- minimum 2d bounding rectangles and circles
- minimum 3d bounding boxes
- stereolithography STL and other import / export formats.
Check out http://www.computational-cad.com/