I have a project that involves manipulating the rotation of particles using cryosparc-tools. I’ve been looking at the “alignments3D/pose” key on the particles and see a vector of three numbers that look like they are in radians. However, I am uncertain as to how their rotational information is encoded. I am aware of numerous ways they could be, including rodrigues vector and many varieties of euler angle (e.g. ZYZ).
I found the guidance in that thread very helpful. I also made this animation for a guide page which I will not end up using, so I may as well post it here. You can see that as the vector’s length increases, the rotation increases; as the vector’s direction changes, the axis about which the object rotates changes.
