Automatic Polygon Clipping

A convex polygon will be automatically fitted to the peripheral control points, analogous to stretching a rubber-band around all of the points.  The polygon can be expanded (inflated) by a specified distance.  When used to clip a model, specifying a conservative number (e.g., Average Minimum Distance Between Control Points) to inflate the convex hull will eliminate abrupt and unrealistic terminations against the convex hull perimeter