Orbit Control Problem

Dear all
Site is as follows…
https://penghu.info/3D/Test.php

I can not rotate xy-axis(hold z axis still) smoothly, could anyone teach me how to reset my parameter ? thank you.

Hi, welcome to the forum,

It looks like in the example you provided OrbitControls works as intended… It would help if you could explain in more details what you want to achieve, or even to show a video.

In the meantime have you considered these other controls options ?