def reverse_equal_line(self, arc_a, arc_b):
i_a, j_a = arc_a[0], arc_a[1]
i_b, j_b = arc_b[0], arc_b[1]
if i_a - j_a != i_b - j_b:
return False
while i_a <= j_a:
if not equal_point(self.coordinates[i_a], self.coordinates[j_b]):
return False
else:
i_a += 1
j_b -= 1
return True
def reverse_equal_ring(self, arc_a, arc_b):
i_a, j_a = arc_a[0], arc_a[1]
i_b, j_b = arc_b[0], arc_b[1]
n = j_a - i_a
if n != j_b - i_b:
return False
k_a = self.find_minimum_offset(arc_a)
k_b = n - self.find_minimum_offset(arc_b)
for i in range(n):
if not equal_point(self.coordinates[i_a + (i + k_a) % n],
self.coordinates[j_b - (i + k_b) % n]):
return False
return True
def equal_index(self, i, j):
return equal_point(self.coordinates[i], self.coordinates[j])