Rotating on Diagonal X,Y axis

Support Animation and Rigging
1

I’m trying to flip a plane diagonally (about the x and y axis), but when I set keyframes for the X and Y axis (0-180) it wobbles a lot. After some research, I’ve come to realize that this is normal, but what is the best way to rotate on a diagonal? (I would prefer python script with an explanation if possible)

.blend file attached

Thanks!Diagonal Rotation.blend (462 KB)

2

Simply orient an empty to the desired angle to the global axes and parent your plane to that - then keyframe rotations of the empty in the Transform Boxes on the empty’s object panel. If you rotate in the view, remember you can use keystroke like R ZZ 20 CR, which will rotate an object about it own local Z axis rather than the global Z axis (CR = Return…).

Cheers, Clock.