[ot][spam][crazy][is it appropriate to direct disruption towards things that have been heavily disrupted?]

[Undiscussed Horrific Abuse, One Victim of Many]

more appropriate 3d coordinate frame rotation matrices are documented
at https://en.wikipedia.org/wiki/Rotation_matrix#In_three_dimensions

a general purpose matrix form for any axis is given at
https://en.wikipedia.org/wiki/Rotation_matrix#Rotation_matrix_from_axis_and_angle

i'll copy that matrix into a method