This is a neat AutoCAD routine from **Owen Protheroe** that allows you to join any three points with the shortest path. What exactly does that mean? Think of the three points as vertices of a triangle, and you may realize that what this LISP routine actually does is find the Fermat point of any triangle. It is very easy to use: load the LISP file, type in the command FP, and pick three points. Three lines will be constructed, and the intersection of these lines is the result. |