I tried using the spline tool. That works if the line is stationary, but starts to deform if you animate (like rotate) it. So I’m looking for a simple straight line drawing tool, like in PowerPoint or something.
Hi and welcome
Did you try to place your line in a group and then animate the group’s rotation?
The rotation will occur around the origin (green dot) of the group layer.
You can still move the origin of the group pushing CTRL down while dragging it