tbplas.rotate_coord

tbplas.rotate_coord(coord: ndarray, angle: float = 0.0, axis: str = 'z', center: ndarray = array([0., 0., 0.])) → ndarray

Rotate Cartesian coordinates according to Euler angles.

Reference: https://en.wikipedia.org/wiki/Rotation_matrix#Rotation_matrix_from_axis_and_angle

Note that the right-hand rule is used, i.e., a positive value means the angle is counter-clockwise.

Parameters:

  • coord – (num_coord, 3) float64 array Cartesian coordinates to rotate

  • angle – float rotation angle in RADIAN, not degrees

  • axis – string axis around which the rotation is performed

  • center – (3,) float64 array Cartesian coordinate of rotation center

Returns:

(num_coord, 3) float64 array rotated Cartesian coordinates

Raises:

ValueError – if axis is not “x”, “y” or “z”