style - The style of polygon to render (string)

                        fill: draw a filled polygon using color attribute

                        line: draw a line using color attribute

                        lineloop: draw a line (with connected ends) in the using color attribute

                        filloutline: draw a filled polygon using color attribute, then outlined with outlinecolor attribute

antialias - whether to antialias the polygon (number)

                        0: do not antialias

                        1: antialias

points - a list of points for the polygon (string)

                        List of points separated by a space.  Each point looks like:  x:y

color - The color used to stroke the polygon. (color)

outlinecolor - The color used to outline a filled polygon if the style is filloutline, this is currently a 1 pixel outline. (color)

linewidth - Thickens with which to draw the outline