pynbody.util.random_rotation_matrix#
- pynbody.util.random_rotation_matrix()[source]#
Return a random rotation matrix (Haar measure for 3x3 case), using fast algorithm from Graphics Gems III
- Returns:
A 3x3 rotation matrix
- Return type:
array-like
Notes
This is a Python implementation of the algorithm from Graphics Gems III, by Ken Shoemake. The original code was available at http://tog.acm.org/resources/GraphicsGems/gemsiii/rand_rotation.c, but was removed. An archived version is available at https://web.archive.org/web/20120621201232/http://tog.acm.org/resources/GraphicsGems/gemsiii/rand_rotation.c