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DAMASK_EICMD
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more sensible type checking and errors

This commit is contained in:
Martin Diehl 2020-05-16 13:23:32 +02:00
parent 9fa1539163
commit 19638168e6
1 changed files with 12 additions and 9 deletions
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21
python/damask/_rotation.py
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@ -98,7 +98,7 @@ class Rotation:
"""
if self.quaternion.shape != (4,):
raise NotImplementedError('Support for multiple rotations missing')
if isinstance(other, Rotation): # rotate a rotation
if isinstance(other, Rotation):
self_q = self.quaternion[0]
self_p = self.quaternion[1:]
other_q = other.quaternion[0]
@ -106,22 +106,23 @@ class Rotation:
R = self.__class__(np.append(self_q*other_q - np.dot(self_p,other_p),
self_q*other_p + other_q*self_p + _P * np.cross(self_p,other_p)))
return R.standardize()
elif isinstance(other, (tuple,np.ndarray)):
if isinstance(other,tuple) or other.shape == (3,): # rotate a single (3)-vector or meshgrid
elif isinstance(other, np.ndarray):
if other.shape == (3,):
A = self.quaternion[0]**2.0 - np.dot(self.quaternion[1:],self.quaternion[1:])
B = 2.0 * np.dot(self.quaternion[1:],other)
C = 2.0 * _P*self.quaternion[0]
return A*other + B*self.quaternion[1:] + C * np.cross(self.quaternion[1:],other)
elif other.shape == (3,3,): # rotate a single (3x3)-matrix
elif other.shape == (3,3,):
return np.dot(self.asMatrix(),np.dot(other,self.asMatrix().T))
elif other.shape == (3,3,3,3,):
raise NotImplementedError('Support for rotation of 4th order tensors missing')
R = self.asMatrix()
return np.einsum('...im,...jn,...ko,...lp,...mnop',R,R,R,R,other)
else:
return NotImplemented
raise ValueError('Can only rotate vectors, 2nd order ternsors, and 4th order tensors')
else:
return NotImplemented
raise TypeError('Cannot rotate {}'.format(type(other)))
def __matmul__(self, other):
@ -130,7 +131,7 @@ class Rotation:
details to be discussed
"""
if isinstance(other, Rotation): # rotate a rotation
if isinstance(other, Rotation):
q_m = self.quaternion[...,0:1]
p_m = self.quaternion[...,1:]
q_o = other.quaternion[...,0:1]
@ -158,7 +159,9 @@ class Rotation:
R = self.asMatrix()
return np.einsum('...im,...jn,...ko,...lp,...mnop',R,R,R,R,other)
else:
raise ValueError
raise ValueError('Can only rotate vectors, 2nd order ternsors, and 4th order tensors')
else:
raise TypeError('Cannot rotate {}'.format(type(other)))
def inverse(self):
"""In-place inverse rotation/backward rotation."""