area (l'Huilier fan) = 0.4283604310783730841958038
sum tau = 5.854824876101213392729483 ; sum tau + area - 2pi = -5.6007e-60
rolling development cut at v0: closing gap |w_n - w_0| = 0.08745360578; crossing pairs: [(0, 6, ['0.467473943386', '-0.0515031890342', '-0.0347682870378', '0.484208845382'])]
rolling development cut at v1: closing gap |w_n - w_0| = 0.2627327001; crossing pairs: []
rolling development cut at v2: closing gap |w_n - w_0| = 0.4805977283; crossing pairs: []
rolling development cut at v3: closing gap |w_n - w_0| = 0.1316814432; crossing pairs: []
rolling development cut at v4: closing gap |w_n - w_0| = 0.2576883498; crossing pairs: []
rolling development cut at v5: closing gap |w_n - w_0| = 0.3212644048; crossing pairs: []
rolling development cut at v6: closing gap |w_n - w_0| = 0.2217286647; crossing pairs: []
