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I am interested in this issue you want a toggle between zoom pan and rotation you can achieve it by making an object having all properties and pass it as argument in function

I am the person involved in modifying orbitControl().
Regarding rotation and zoom, this can be prevented by setting the coefficient to 0. Therefore, I feel like there is little point in making it an option, in my opinion.
Regarding pan, it does not work on mobile tphones unless you use two or more fingers. The buttons used on the mouse are also different. I don't quite understand what the problem is.

However, if there is something useful other than the freeRotation option that I have prepared, and it makes sense in terms of convenience, I will not deny its introduction.
Of course, in that case, you need to make sure that the default behavior does not change.