def precalculate_polygon(self):
diameter = self.diameter
self.bounds_hash = {}
my_polygon = Polygon()
for i in range(len(self.polygon)):
point1 = self.polygon.points[i - 1]
point2 = self.polygon.points[i]
my_polygon.extend(Edge.split(point1, point2, diameter))
self.precalculated_polygon = Polygon.copy(my_polygon.points)
return my_polygon
