There are doubts about the function utils_cython.get_normalized

[BJHYZJ]

Thanks for your contributions to the field of motion prediction. In the process of reading the code, I have doubts about the function utils_cython.get_normalized, I think it rotates the coordinates of all agents based on the coordinates and angular velocity of the 11th frame of the influencer, but I still can't find the rotation pattern after visualizing several scenes, and I don't know what the role of rotation is.



(The left side is the original trajectory, the right side is the trajectory after rotation)