def exercise_basis_of_mirror_plane_with_normal():
from cctbx.math_module import basis_of_mirror_plane_with_normal
for u in [(1,0,0), (0,1,0), (0,0,1), (1,1,0), (1,1,1), (0,-1,1), (-1,1,1)]:
u = mat.col(u)
v,w = [ mat.col(x) for x in basis_of_mirror_plane_with_normal(u.elems) ]
assert u.dot(v) == 0
assert u.dot(w) == 0
assert abs(v.cross(w)) != 0
try:
basis_of_mirror_plane_with_normal((0,0,0))
except AssertionError:
pass
else:
raise Exception_expected
def exercise_basis_of_mirror_plane_with_normal():
from cctbx.math_module import basis_of_mirror_plane_with_normal
for u in [(1, 0, 0), (0, 1, 0), (0, 0, 1), (1, 1, 0), (1, 1, 1),
(0, -1, 1), (-1, 1, 1)]:
u = mat.col(u)
v, w = [mat.col(x) for x in basis_of_mirror_plane_with_normal(u.elems)]
assert u.dot(v) == 0
assert u.dot(w) == 0
assert abs(v.cross(w)) != 0
try:
basis_of_mirror_plane_with_normal((0, 0, 0))
except AssertionError:
pass
else:
raise Exception_expected
def basis_of_invariant(self):
from cctbx.math_module import basis_of_mirror_plane_with_normal
if not hasattr(self, '_basis_of_invariant'):
if self.type() == 1:
basis = ((1, 0, 0), (0, 1, 0), (0, 0, 1))
elif self.type() == -2:
basis = basis_of_mirror_plane_with_normal(self.ev())
elif self.type() < 0:
basis = ()
else:
basis = (self.ev(), )
self._basis_of_invariant = basis
return self._basis_of_invariant
def basis_of_invariant(self):
from cctbx.math_module import basis_of_mirror_plane_with_normal
if not hasattr(self, '_basis_of_invariant'):
if self.type() == 1:
basis = ((1,0,0), (0,1,0), (0,0,1))
elif self.type() == -2:
basis = basis_of_mirror_plane_with_normal(self.ev())
elif self.type() < 0:
basis = ()
else:
basis = (self.ev(), )
self._basis_of_invariant = basis
return self._basis_of_invariant
