OPT: use centermassrot
OPT: use centermassrot

Former-commit-id: c35aab72c83d068d090dcf440d544e974a52c78e [formerly fb864d57966a6f9e2886ee1db9bf409b4f695430]
Former-commit-id: 06e29bda5adcc858315ac985fc0fe2b9c05b29a3
Former-commit-id: f5ae35661e1e26cee460d626f1dca4a7d4ac7e0d
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox