code: def convertTupleArrayToPoints(self, arrayOfPointTuples):
          
          points = ""
          for tuple in arrayOfPointTuples:
              points += str(tuple[0]) + "," + str(tuple[1]) + " "
          return points
docs: Method used to convert an array of tuples (x,y) into a string
          suitable for createPolygon or createPolyline
          @type  arrayOfPointTuples: An array containing tuples eg.[(x1,y1),(x2,y2]
          @param arrayOfPointTuples:  All points needed to create the shape
          @return a string in the form "x1,y1 x2,y2 x3,y3"