rotation_matrix_to_axis

static Quaternion.rotation_matrix_to_axis(rotation_matrix)

Convert a rotation matrix to the corresponding axis of rotation. Parameters ———- rotation_matrix : tuple of tuples or list of lists

A 3x3 rotation matrix defined as a tuple of tuples or a list of lists. The matrix should be orthogonal.

Returns

tuple

The X, Y, and Z axes of the rotated frame.

Examples

>>> from ansys.aedt.core.generic.quaternion import Quaternion
>>> rotation_matrix = (
...     (0.7071067811865476, 0.0, 0.7071067811865476),
...     (0.0, 1.0, 0.0),
...     (-0.7071067811865476, 0.0, 0.7071067811865476),
... )
>>> x, y, z = Quaternion.rotation_matrix_to_axis(rotation_matrix)
>>> x
(0.7071067811865476, 0.0, -0.7071067811865476)
>>> y
(0.0, 1.0, 0.0)
>>> z
(-0.7071067811865476, 0.0, 0.7071067811865476)