def find_directions(self, directions, miller):
"""Find missing directions and miller indices from the specified ones.
Also handles the conversion of hexagonal-style 4-index notation to
the normal 3-index notation.
"""
directions = list(directions)
miller = list(miller)
if miller != [None, None, None]:
raise NotImplementedError(
'Specifying Miller indices of surfaces currently '
'broken for hexagonal crystals.')
for obj in (directions, miller):
for i in range(3):
if obj[i] is not None:
(a, b, c, d) = obj[i]
if a + b + c != 0:
raise ValueError(
("(%d,%d,%d,%d) is not a valid hexagonal Miller " +
"index, as the sum of the first three numbers " +
"should be zero.") % (a, b, c, d))
x = 4 * a + 2 * b
y = 2 * a + 4 * b
z = 3 * d
obj[i] = (x, y, z)
TriclinicFactory.find_directions(self, directions, miller)
def find_directions(self, directions, miller):
"""Find missing directions and miller indices from the specified ones.
Also handles the conversion of hexagonal-style 4-index notation to
the normal 3-index notation.
"""
directions = list(directions)
miller = list(miller)
for obj in (directions,miller):
for i in range(3):
if obj[i] is not None:
(a,b,c,d) = obj[i]
x = 4*a + 2*b
y = 2*a + 4*b
z = 3*d
obj[i] = (x,y,z)
TriclinicFactory.find_directions(self, directions, miller)
def find_directions(self, directions, miller):
"""Find missing directions and miller indices from the specified ones.
Also handles the conversion of hexagonal-style 4-index notation to
the normal 3-index notation.
"""
directions = list(directions)
miller = list(miller)
for obj in (directions,miller):
for i in range(3):
if obj[i] is not None:
(a,b,c,d) = obj[i]
if a + b + c != 0:
raise ValueError(
("(%d,%d,%d,%d) is not a valid hexagonal Miller " +
"index, as the sum of the first three numbers " +
"should be zero.") % (a,b,c,d))
x = 4*a + 2*b
y = 2*a + 4*b
z = 3*d
obj[i] = (x,y,z)
TriclinicFactory.find_directions(self, directions, miller)
