def _point_orient(self, point):
e1 = edge_of_neighbor(self.n1)
e2 = edge_of_neighbor(self.n2)
p1 = e1.p1
p2 = e1.p2
p3 = e2.p2
orient1 = orient(p1, p2, point)
orient2 = orient(p2, p3, point)
orient3 = orient(p3, p1, point)
return orient1 + orient2 + orient3
def __contains__(self, point):
return orient(self.p1, self.p2, point) == 0
