Set the axis of rotation of trackballcontrols to the center of the object

Questions
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1

Hi all,
I am trying to use object trackballconrols to rotate an object axis
however after the pan moves, the central axis of the trackballcontrols is not the center of the object.
How can the rotation axis become the central axis of the object even after moving the pan?

image

Thank you in advance!

2

Have you solved this problem? I have also encountered a similar problem, but I have not found a good solution.