Determining if a Polygon is drawn clockwise or counterclockwise

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According to the ESRI Shapefile Documentation, “The neighborhood to the right of an observer walking along the ring in vertex order is the inside of the polygon”.  Meaning that all normal or “clean” polygons are drawn in a clockwise fashion.  When it comes to holes in the polygons, these are defined by a counterclockwise path delineating… Read more »