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DAMASK_EICMD
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use physical/ISO convention

This commit is contained in:
Martin Diehl 2022-04-28 15:56:24 +02:00
parent a0455cadf3
commit 06cef42927
2 changed files with 7 additions and 6 deletions
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5
python/damask/_rotation.py
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@ -1137,14 +1137,15 @@ class Rotation:
Examples
--------
tbd
"""
rng = np.random.default_rng(rng_seed)
sigma_,alpha,beta = (np.radians(coordinate) for coordinate in (sigma,crystal,sample)) if degrees else \
map(np.array, (sigma,crystal,sample))
d_cr = np.array([np.sin(alpha[1])*np.cos(alpha[0]), np.sin(alpha[1])*np.sin(alpha[0]), np.cos(alpha[1])])
d_lab = np.array([np.sin( beta[1])*np.cos( beta[0]), np.sin( beta[1])*np.sin( beta[0]), np.cos( beta[1])])
d_cr = np.array([np.sin(alpha[0])*np.cos(alpha[1]), np.sin(alpha[0])*np.sin(alpha[1]), np.cos(alpha[0])])
d_lab = np.array([np.sin( beta[0])*np.cos( beta[1]), np.sin( beta[0])*np.sin( beta[1]), np.cos( beta[0])])
ax_align = np.append(np.cross(d_lab,d_cr), np.arccos(np.dot(d_lab,d_cr)))
if np.isclose(ax_align[3],0.0): ax_align[:3] = np.array([1,0,0])
R_align = Rotation.from_axis_angle(ax_align if ax_align[3] > 0.0 else -ax_align,normalize=True) # rotate fiber axis from sample to crystal frame

8
python/tests/test_Rotation.py
View File

@ -1077,11 +1077,11 @@ class TestRotation:
def test_from_fiber_component(self,sigma,shape):
p = []
for run in range(5):
alpha = np.random.random()*2*np.pi,np.arccos(np.random.random())
beta = np.random.random()*2*np.pi,np.arccos(np.random.random())
alpha = np.arccos(np.random.random()),np.random.random()*2*np.pi
beta = np.arccos(np.random.random()),np.random.random()*2*np.pi
f_in_C = np.array([np.sin(alpha[1])*np.cos(alpha[0]), np.sin(alpha[1])*np.sin(alpha[0]), np.cos(alpha[1])])
f_in_S = np.array([np.sin(beta[1] )*np.cos(beta[0] ), np.sin(beta[1] )*np.sin(beta[0] ), np.cos(beta[1] )])
f_in_C = np.array([np.sin(alpha[0])*np.cos(alpha[1]), np.sin(alpha[0])*np.sin(alpha[1]), np.cos(alpha[0])])
f_in_S = np.array([np.sin( beta[0])*np.cos( beta[1]), np.sin( beta[0])*np.sin( beta[1]), np.cos( beta[0])])
ax = np.append(np.cross(f_in_C,f_in_S), - np.arccos(np.dot(f_in_C,f_in_S)))
n = Rotation.from_axis_angle(ax if ax[3] > 0.0 else ax*-1.0 ,normalize=True) # rotation to align fiber axis in crystal and sample system