private void setEAxis ( ) { Rotation e = rotations . get ( 0 ) ; Rotation h = rotations . get ( principalAxisIndex ) ; e . setAxisAngle ( new AxisAngle4d ( h . getAxisAngle ( ) ) ) ; e . getAxisAngle ( ) . angle = 0.0 ; e . setFold ( h . getFold ( ) ) ; }
Add E operation to the highest order rotation axis . By definition E belongs to the highest order axis .