about some variables in code

[SophieChang66]

hi, thank you for sharing code! I have some questions about some varibales in code, I hope you can explain them for me, thank you again!

1. normal in FacePose, does it mean normal vector of 3D face plane 2._CP, _LR, _CR, _CM, CE, like as vec_cp_kalman_l, vec_cp_pos_l