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DAMASK_EICMD
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addOrientations now checks its input for convention conformity

This commit is contained in:
Philip Eisenlohr 2018-12-08 13:22:22 -05:00
parent 1de37b9397
commit 3f8726464d
1 changed files with 32 additions and 5 deletions
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35
processing/post/addOrientations.py
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@ -9,6 +9,29 @@ import damask
scriptName = os.path.splitext(os.path.basename(__file__))[0]
scriptID = ' '.join([scriptName,damask.version])
# --------------------------------------------------------------------
# convention conformity checks
# --------------------------------------------------------------------
def check_Eulers(eulers):
if np.any(eulers < 0.0) or np.any(eulers > 2.0*math.pi) or eulers[1] > math.pi: # Euler angles within valid range?
raise ValueError('Euler angles outside of [0..2π],[0..π],[0..2π].\n{} {} {}.'.format(*eulers))
return eulers
def check_quaternion(q):
if q.q < 0.0: # positive first quaternion component?
raise ValueError('quaternion has negative first component.\n{}'.format(q))
return q
def check_matrix(M):
if abs(1.0-np.linalg.det(M)) > 1e-8: # proper rotation?
raise ValueError('matrix is not a proper rotation.\n{}'.format(M))
if abs(np.dot(M[0],M[1])) > 1e-8 \
or abs(np.dot(M[1],M[2])) > 1e-8 \
or abs(np.dot(M[2],M[0])) > 1e-8: # all orthogonal?
raise ValueError('matrix is not orthogonal.\n{}'.format(M))
return M
# --------------------------------------------------------------------
# MAIN
# --------------------------------------------------------------------
@ -103,6 +126,7 @@ if np.sum(input) != 1: parser.error('needs exactly one input format.')
(options.matrix,9,'matrix'),
(options.quaternion,4,'quaternion'),
][np.where(input)[0][0]] # select input label that was requested
toRadians = math.pi/180.0 if options.degrees else 1.0 # rescale degrees to radians
r = damask.Quaternion.fromAngleAxis(toRadians*options.crystalrotation[0],options.crystalrotation[1:]) # crystal frame rotation
R = damask.Quaternion.fromAngleAxis(toRadians*options. labrotation[0],options. labrotation[1:]) # lab frame rotation
@ -149,18 +173,21 @@ for name in filenames:
outputAlive = True
while outputAlive and table.data_read(): # read next data line of ASCII table
if inputtype == 'eulers':
o = damask.Orientation(Eulers = np.array(list(map(float,table.data[column:column+3])))*toRadians)
o = damask.Orientation(Eulers = check_Eulers(np.array(list(map(float,table.data[column:column+3])))*toRadians))
elif inputtype == 'rodrigues':
o = damask.Orientation(Rodrigues = np.array(list(map(float,table.data[column:column+3]))))
elif inputtype == 'matrix':
o = damask.Orientation(matrix = np.array(list(map(float,table.data[column:column+9]))).reshape(3,3))
o = damask.Orientation(matrix = check_matrix(np.array(list(map(float,table.data[column:column+9]))).reshape(3,3)))
elif inputtype == 'frame':
M = np.array(list(map(float,table.data[column[0]:column[0]+3] + \
table.data[column[1]:column[1]+3] + \
table.data[column[2]:column[2]+3]))).reshape(3,3).T
o = damask.Orientation(matrix = M/np.linalg.norm(M,axis=0))
o = damask.Orientation(matrix = check_matrix(M/np.linalg.norm(M,axis=0)))
elif inputtype == 'quaternion':
o = damask.Orientation(quaternion = np.array(list(map(float,table.data[column:column+4]))))
o = damask.Orientation(quaternion = check_quaternion(np.array(list(map(float,table.data[column:column+4])))))
o.quaternion = r*o.quaternion*R # apply additional lab and crystal frame rotations