Merge branch 'test-rotation-multidim' into 'development'
Increase uniformity in from_X(as_X) tests See merge request damask/DAMASK!676
This commit is contained in:
Martin Diehl
commit
30998d6670
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@ -7,6 +7,7 @@ from damask import Table
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from damask import _rotation
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from damask import grid_filters
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from damask import util
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from damask import tensor
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n = 1000
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atol=1.e-4
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@ -20,6 +21,16 @@ def ref_path(ref_path_base):
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def set_of_rotations(set_of_quaternions):
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return [Rotation.from_quaternion(s) for s in set_of_quaternions]
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@pytest.fixture
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def multidim_rotations(set_of_quaternions):
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L = len(set_of_quaternions)
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i = 0
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while L%(f:=np.random.randint(2,np.sqrt(L).astype(int))) > 0 and i<L:
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i += 1
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f = i if i == L else f
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return Rotation.from_quaternion(set_of_quaternions.reshape((L//f,f,-1)))
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####################################################################################################
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# Code below available according to the following conditions
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@ -691,117 +702,156 @@ class TestRotation:
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def test_to_numpy(self):
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r = Rotation.from_random(np.random.randint(0,10,4))
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assert np.all(r.as_quaternion() == np.array(r))
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assert (r.as_quaternion() == np.array(r)).all()
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@pytest.mark.parametrize('degrees',[True,False])
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def test_Eulers(self,set_of_rotations,degrees):
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for rot in set_of_rotations:
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m = rot.as_quaternion()
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o = Rotation.from_Euler_angles(rot.as_Euler_angles(degrees),degrees).as_quaternion()
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ok = np.allclose(m,o,atol=atol)
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if np.isclose(rot.as_quaternion()[0],0.0,atol=atol):
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ok |= np.allclose(m*-1.,o,atol=atol)
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assert ok and np.isclose(np.linalg.norm(o),1.0), f'{m},{o},{rot.as_quaternion()}'
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def test_bounds(self,multidim_rotations):
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m = multidim_rotations
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@pytest.mark.parametrize('P',[1,-1])
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@pytest.mark.parametrize('normalize',[True,False])
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@pytest.mark.parametrize('degrees',[True,False])
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def test_axis_angle(self,set_of_rotations,degrees,normalize,P):
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c = np.array([P*-1,P*-1,P*-1,1.])
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c[:3] *= 0.9 if normalize else 1.0
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for rot in set_of_rotations:
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m = rot.as_Euler_angles()
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o = Rotation.from_axis_angle(rot.as_axis_angle(degrees)*c,degrees,normalize,P).as_Euler_angles()
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u = np.array([np.pi*2,np.pi,np.pi*2])
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ok = np.allclose(m,o,atol=atol)
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ok |= np.allclose(np.where(np.isclose(m,u),m-u,m),np.where(np.isclose(o,u),o-u,o),atol=atol)
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if np.isclose(m[1],0.0,atol=atol) or np.isclose(m[1],np.pi,atol=atol):
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sum_phi = np.unwrap([m[0]+m[2],o[0]+o[2]])
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ok |= np.isclose(sum_phi[0],sum_phi[1],atol=atol)
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assert ok and (np.zeros(3)-1.e-9 <= o).all() \
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and (o <= np.array([np.pi*2.,np.pi,np.pi*2.])+1.e-9).all(), f'{m},{o},{rot.as_quaternion()}'
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q = m.as_quaternion()
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assert np.allclose(1.,np.linalg.norm(q,axis=-1))
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def test_matrix(self,set_of_rotations):
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for rot in set_of_rotations:
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m = rot.as_axis_angle()
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o = Rotation.from_axis_angle(rot.as_axis_angle()).as_axis_angle()
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ok = np.allclose(m,o,atol=atol)
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if np.isclose(m[3],np.pi,atol=atol):
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ok |= np.allclose(m*np.array([-1.,-1.,-1.,1.]),o,atol=atol)
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assert ok and np.isclose(np.linalg.norm(o[:3]),1.0) \
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and o[3]<=np.pi+1.e-9, f'{m},{o},{rot.as_quaternion()}'
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v = m.as_Rodrigues_vector(compact=False)
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assert np.allclose(1.,np.linalg.norm(v[...,:3],axis=-1))
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def test_parallel(self,set_of_rotations):
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a = np.array([[1.0,0.0,0.0],
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[0.0,1.0,0.0]])
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for rot in set_of_rotations:
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assert rot.allclose(Rotation.from_parallel(a,rot.broadcast_to((2,))@a))
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v = m.as_axis_angle(degrees=False)
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assert np.allclose(1.,np.linalg.norm(v[...,:3],axis=-1))
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assert (v[...,3] >= 0.).all and (v < np.pi+1.e-9).all()
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@pytest.mark.parametrize('P',[1,-1])
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@pytest.mark.parametrize('normalize',[True,False])
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def test_Rodrigues(self,set_of_rotations,normalize,P):
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c = np.array([P*-1,P*-1,P*-1,1.])
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c[:3] *= 0.9 if normalize else 1.0
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for rot in set_of_rotations:
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m = rot.as_matrix()
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o = Rotation.from_Rodrigues_vector(rot.as_Rodrigues_vector()*c,normalize,P).as_matrix()
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ok = np.allclose(m,o,atol=atol)
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assert ok and np.isclose(np.linalg.det(o),1.0), f'{m},{o}'
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r = m.as_matrix()
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assert np.allclose(1.,np.linalg.det(r))
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def test_Rodrigues_compact(self,set_of_rotations):
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for rot in set_of_rotations:
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c = rot.as_Rodrigues_vector(compact=True)
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r = rot.as_Rodrigues_vector(compact=False)
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assert np.allclose(r[:3]*r[3], c, equal_nan=True)
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e = m.as_Euler_angles(degrees=False)
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assert (e >= 0.).all and (e < np.pi*np.array([2.,1.,2.])+1.e-9).all()
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c = m.as_cubochoric()
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assert (np.linalg.norm(c,ord=np.inf,axis=-1) < np.pi**(2./3.)*0.5+1.e-9).all()
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h = m.as_homochoric()
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assert (np.linalg.norm(h,axis=-1) < (3.*np.pi/4.)**(1./3.) + 1.e-9).all()
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@pytest.mark.parametrize('P',[1,-1])
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def test_homochoric(self,set_of_rotations,P):
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cutoff = np.tan(np.pi*.5*(1.-1e-4))
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for rot in set_of_rotations:
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m = rot.as_Rodrigues_vector()
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o = Rotation.from_homochoric(rot.as_homochoric()*P*-1,P).as_Rodrigues_vector()
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ok = np.allclose(np.clip(m,None,cutoff),np.clip(o,None,cutoff),atol=atol)
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ok |= np.isclose(m[3],0.0,atol=atol)
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assert ok and np.isclose(np.linalg.norm(o[:3]),1.0), f'{m},{o},{rot.as_quaternion()}'
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@pytest.mark.parametrize('P',[1,-1])
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def test_cubochoric(self,set_of_rotations,P):
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for rot in set_of_rotations:
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m = rot.as_homochoric()
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o = Rotation.from_cubochoric(rot.as_cubochoric()*P*-1,P).as_homochoric()
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ok = np.allclose(m,o,atol=atol)
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assert ok and np.linalg.norm(o) < (3.*np.pi/4.)**(1./3.) + 1.e-9, f'{m},{o},{rot.as_quaternion()}'
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@pytest.mark.parametrize('P',[1,-1])
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@pytest.mark.parametrize('accept_homomorph',[True,False])
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@pytest.mark.parametrize('normalize',[True,False])
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def test_quaternion(self,set_of_rotations,P,accept_homomorph,normalize):
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c = np.array([1,P*-1,P*-1,P*-1]) * (-1 if accept_homomorph else 1) * (0.9 if normalize else 1.0)
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for rot in set_of_rotations:
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m = rot.as_cubochoric()
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o = Rotation.from_quaternion(rot.as_quaternion()*c,accept_homomorph,normalize,P).as_cubochoric()
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ok = np.allclose(m,o,atol=atol)
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if np.count_nonzero(np.isclose(np.abs(o),np.pi**(2./3.)*.5)):
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ok |= np.allclose(m*-1.,o,atol=atol)
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assert ok and o.max() < np.pi**(2./3.)*0.5+1.e-9, f'{m},{o},{rot.as_quaternion()}'
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@pytest.mark.parametrize('P',[1,-1])
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def test_quaternion(self,multidim_rotations,accept_homomorph,normalize,P):
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c = np.array([1,-P,-P,-P]) * (-1 if accept_homomorph else 1) * (0.9 if normalize else 1.0)
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m = multidim_rotations
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o = Rotation.from_quaternion(m.as_quaternion()*c,
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accept_homomorph=accept_homomorph,
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normalize=normalize,
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P=P)
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f = Rotation(np.where(np.isclose(m.as_quaternion()[...,0],0.0,atol=atol)[...,np.newaxis],~o,o))
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assert np.logical_or(m.isclose(o,atol=atol),
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m.isclose(f,atol=atol)
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).all()
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@pytest.mark.parametrize('degrees',[True,False])
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def test_Eulers(self,multidim_rotations,degrees):
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m = multidim_rotations
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o = Rotation.from_Euler_angles(m.as_Euler_angles(degrees),
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degrees=degrees)
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f = Rotation(np.where(np.isclose(m.as_quaternion()[...,0],0.0,atol=atol)[...,np.newaxis],~o,o))
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assert np.logical_or(m.isclose(o,atol=atol),
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m.isclose(f,atol=atol)
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).all()
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@pytest.mark.parametrize('degrees',[True,False])
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@pytest.mark.parametrize('normalize',[True,False])
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@pytest.mark.parametrize('P',[1,-1])
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def test_axis_angle(self,multidim_rotations,degrees,normalize,P):
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c = np.array([-P,-P,-P,1.])
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c[:3] *= 0.9 if normalize else 1.0
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m = multidim_rotations
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o = Rotation.from_axis_angle(m.as_axis_angle(degrees)*c,
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degrees=degrees,
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normalize=normalize,
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P=P)
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f = Rotation(np.where(np.isclose(m.as_quaternion()[...,0],0.0,atol=atol)[...,np.newaxis],~o,o))
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assert np.logical_or(m.isclose(o,atol=atol),
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m.isclose(f,atol=atol)
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).all()
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def test_matrix(self,multidim_rotations):
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m = multidim_rotations
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o = Rotation.from_matrix(m.as_matrix())
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f = Rotation(np.where(np.isclose(m.as_quaternion()[...,0],0.0,atol=atol)[...,np.newaxis],~o,o))
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assert np.logical_or(m.isclose(o,atol=atol),
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m.isclose(f,atol=atol)
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).all()
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def test_parallel(self,multidim_rotations):
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m = multidim_rotations
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a = np.broadcast_to(np.array([[1.0,0.0,0.0],
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[0.0,1.0,0.0]]),m.shape+(2,3))
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assert m.allclose(Rotation.from_parallel(a,m.broadcast_to(m.shape+(2,))@a))
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@pytest.mark.parametrize('normalize',[True,False])
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@pytest.mark.parametrize('P',[1,-1])
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def test_Rodrigues(self,multidim_rotations,normalize,P):
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c = np.array([-P,-P,-P,1.])
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c[:3] *= 0.9 if normalize else 1.0
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m = multidim_rotations
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o = Rotation.from_Rodrigues_vector(m.as_Rodrigues_vector()*c,
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normalize=normalize,
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P=P)
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f = Rotation(np.where(np.isclose(m.as_quaternion()[...,0],0.0,atol=atol)[...,np.newaxis],~o,o))
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assert np.logical_or(m.isclose(o,atol=atol),
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m.isclose(f,atol=atol)
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).all()
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def test_Rodrigues_compact(self,multidim_rotations):
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m = multidim_rotations
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c = m.as_Rodrigues_vector(compact=True)
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r = m.as_Rodrigues_vector(compact=False)
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assert np.allclose(r[...,:3]*r[...,3:], c, equal_nan=True)
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@pytest.mark.parametrize('P',[1,-1])
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def test_homochoric(self,multidim_rotations,P):
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m = multidim_rotations
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o = Rotation.from_homochoric(m.as_homochoric()*-P,
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P=P)
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f = Rotation(np.where(np.isclose(m.as_quaternion()[...,0],0.0,atol=atol)[...,np.newaxis],~o,o))
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assert np.logical_or(m.isclose(o,atol=atol),
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m.isclose(f,atol=atol)
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).all()
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@pytest.mark.parametrize('P',[1,-1])
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def test_cubochoric(self,multidim_rotations,P):
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m = multidim_rotations
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o = Rotation.from_cubochoric(m.as_cubochoric()*-P,
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P=P)
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f = Rotation(np.where(np.isclose(m.as_quaternion()[...,0],0.0,atol=atol)[...,np.newaxis],~o,o))
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assert np.logical_or(m.isclose(o,atol=atol),
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m.isclose(f,atol=atol)
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).all()
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@pytest.mark.parametrize('reciprocal',[True,False])
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def test_basis(self,set_of_rotations,reciprocal):
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for rot in set_of_rotations:
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om = rot.as_matrix() + 0.1*np.eye(3)
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rot = Rotation.from_basis(om,False,reciprocal=reciprocal)
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assert np.isclose(np.linalg.det(rot.as_matrix()),1.0)
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def test_basis(self,multidim_rotations,reciprocal):
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m = multidim_rotations
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r = m.as_matrix()
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r = np.linalg.inv(tensor.transpose(r)/np.pi) if reciprocal else r
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o = Rotation.from_basis(r,
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reciprocal=reciprocal)
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f = Rotation(np.where(np.isclose(m.as_quaternion()[...,0],0.0,atol=atol)[...,np.newaxis],~o,o))
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assert np.logical_or(m.isclose(o,atol=atol),
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m.isclose(f,atol=atol)
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).all()
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@pytest.mark.parametrize('shape',[None,1,(4,4)])
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def test_random(self,shape):
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r = Rotation.from_random(shape)
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if shape is None:
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assert r.shape == ()
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elif shape == 1:
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assert r.shape == (1,)
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else:
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assert r.shape == shape
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assert r.shape == () if shape is None else (1,) if shape == 1 else shape
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@pytest.mark.parametrize('shape',[None,5,(4,6)])
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def test_equal(self,shape):
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@ -822,7 +872,7 @@ class TestRotation:
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def test_equal_ambiguous(self):
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qu = np.random.rand(10,4)
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qu[:,0] = 0.
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qu/=np.linalg.norm(qu,axis=1,keepdims=True)
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qu /= np.linalg.norm(qu,axis=1,keepdims=True)
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assert (Rotation(qu) == Rotation(-qu)).all()
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def test_inversion(self):
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@ -947,13 +997,13 @@ class TestRotation:
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p = np.random.rand(n,3)
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o = Rotation._get_pyramid_order(p,direction)
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for i,o_i in enumerate(o):
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assert np.all(o_i==Rotation._get_pyramid_order(p[i],direction))
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assert (o_i==Rotation._get_pyramid_order(p[i],direction)).all()
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def test_pyramid_invariant(self):
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a = np.random.rand(n,3)
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f = Rotation._get_pyramid_order(a,'forward')
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b = Rotation._get_pyramid_order(a,'backward')
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assert np.all(np.take_along_axis(np.take_along_axis(a,f,-1),b,-1) == a)
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assert (np.take_along_axis(np.take_along_axis(a,f,-1),b,-1) == a).all()
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@pytest.mark.parametrize('data',[np.random.rand(5,3),
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