>>13279666You'd multiply a frame (euclidean coordinate system) around a universal origin with those 3 rotation matrices to make a new frame, and then whatever points were in that original frame get reoriented to the new frame via whatever algorithm you want.
In robotics you use 4x4 "homogeneous transform matrices" which encompass both rotation and translation to move/rotate a point around in 3D space. CSfags probably do something similar in vidya programming.