exy = TransformationMatrices.to_exy(T);
This function returns unit vectors e_x and e_y which define axes of frame 2 resolved in frame 1, provided T is a transformation matrix to rotate frame 1 into 2.
from_nxy, from_nxz, Frames.to_exy.
function to_exy extends Modelica.Icons.Function; input TransformationMatrices.Orientation T "Orientation object to rotate frame 1 into frame 2"; output Real exy[3, 2] "= [e_x, e_y] where e_x and e_y are axes unit vectors of frame 2, resolved in frame 1"; end to_exy;