def __cmp__(self, other):
"""Compare points for sort ordering in an arbitrary heirarchy."""
longzip = ziplong(self._values, other, fillvalue=0.0)
for v1, v2 in reversed(list(longzip)):
val = cmp(v1, v2)
if val != 0:
return val
return 0
def __cmp__(self, p):
"""Compare points for sort ordering in an arbitrary heirarchy."""
longzip = ziplong(self._values, p, fillvalue=0.0)
for v1, v2 in reversed(list(longzip)):
val = v1 - v2
if val != 0:
val /= abs(val)
return val
return 0
def __cmp__(self, other):
"""Compare faces for sorting in an arbitrary heirarchy."""
cl1 = [sorted(v[i] for v in self.vertices) for i in range(3)]
cl2 = [sorted(v[i] for v in other.vertices) for i in range(3)]
for i in reversed(range(3)):
for c1, c2 in ziplong(cl1[i], cl2[i]):
if c1 is None:
return -1
val = cmp(c1, c2)
if val != 0:
return val
return 0
