Post #3324380

I doubt this one is going to dazzle siggraph but the gist of it is if you draw a bunch of dots on paper and then sweep a ruler across the page such that it is perpendicular to the axis of movement, and mark runs of vertices it crosses that either all ascend or all descend along the y axis (so if the first three are ascending, and the 4th would be descending that's the end of the run, the 4th starts a new one) you will produce an ordered set of short chains of non-intersecting line segments