Here a plugin which will set it’s origin to center for all layers which will have bline and origin (doesn’t support groups yet)
Set the orgin to center.zip (3.8 KB)
Extract the zip file and then move it to your plugins directory . Restart Synfig and you can see the option in plugin menu “Center the Origin”.
This will center the origin. This is based on position of vertices the center is calculated by where the vertices are. Considering a imaginary rectangle around that object the midpoint is calculated for diagonal which will be the center of object. This technique has few limitations which I will fix, and the updates will be on this thread.
Any suggestions are greatly appreciated