def test_rotation_matrix(self):
R = mut.RotationMatrix()
self.assertTrue(np.allclose(R.matrix(), np.eye(3)))
self.assertTrue(
np.allclose(mut.RotationMatrix.Identity().matrix(), np.eye(3)))
R = mut.RotationMatrix(quaternion=Quaternion.Identity())
self.assertTrue(np.allclose(R.matrix(), np.eye(3)))
R = mut.RotationMatrix(rpy=mut.RollPitchYaw(rpy=[0, 0, 0]))
self.assertTrue(np.allclose(R.matrix(), np.eye(3)))
# - Nontrivial quaternion.
q = Quaternion(wxyz=[0.5, 0.5, 0.5, 0.5])
R = mut.RotationMatrix(quaternion=q)
q_R = R.ToQuaternion()
self.assertTrue(np.allclose(q.wxyz(), q_R.wxyz()))
# - Inverse.
R_I = R.inverse().multiply(R)
self.assertTrue(np.allclose(R_I.matrix(), np.eye(3)))
def test_rigid_transform(self):
def check_equality(X_actual, X_expected_matrix):
# TODO(eric.cousineau): Use `IsNearlyEqualTo`.
self.assertIsInstance(X_actual, mut.RigidTransform)
self.assertTrue(
np.allclose(X_actual.GetAsMatrix4(), X_expected_matrix))
# - Constructors.
X_I = np.eye(4)
check_equality(mut.RigidTransform(), X_I)
check_equality(mut.RigidTransform(other=mut.RigidTransform()), X_I)
R_I = mut.RotationMatrix()
p_I = np.zeros(3)
rpy_I = mut.RollPitchYaw(0, 0, 0)
quaternion_I = Quaternion.Identity()
angle = np.pi * 0
axis = [0, 0, 1]
angle_axis = AngleAxis(angle=angle, axis=axis)
check_equality(mut.RigidTransform(R=R_I, p=p_I), X_I)
check_equality(mut.RigidTransform(rpy=rpy_I, p=p_I), X_I)
check_equality(mut.RigidTransform(quaternion=quaternion_I, p=p_I), X_I)
check_equality(mut.RigidTransform(theta_lambda=angle_axis, p=p_I), X_I)
check_equality(mut.RigidTransform(R=R_I), X_I)
check_equality(mut.RigidTransform(p=p_I), X_I)
# - Accessors, mutators, and general methods.
X = mut.RigidTransform()
X.set(R=R_I, p=p_I)
X.SetFromIsometry3(pose=Isometry3.Identity())
check_equality(mut.RigidTransform.Identity(), X_I)
self.assertIsInstance(X.rotation(), mut.RotationMatrix)
X.set_rotation(R=R_I)
self.assertIsInstance(X.translation(), np.ndarray)
X.set_translation(p=np.zeros(3))
self.assertTrue(np.allclose(X.GetAsMatrix4(), X_I))
self.assertTrue(np.allclose(X.GetAsMatrix34(), X_I[:3]))
self.assertIsInstance(X.GetAsIsometry3(), Isometry3)
check_equality(X.inverse(), X_I)
self.assertIsInstance(X.multiply(other=mut.RigidTransform()),
mut.RigidTransform)
self.assertIsInstance(X.multiply(p_BoQ_B=p_I), np.ndarray)