matplotlib/matplotlib — pull request #529 by jkseppan (2011-10-15 21:12:34+00:00)
Title: Add a RoundedPolygon patch

This is a somewhat cleaned-up version of my answer to [this stackoverflow question](http://stackoverflow.com/questions/7702773/python-produce-pdf-files-draw-polygons-with-rounded-corners). It adds a few utilities that may be of wider use.