Can I Invert OrbitControls.js drag control?

Questions
6

hi guys,
Thank you for many replies, and I solved it, but I am concerned about is this solution good for all devices.

I want to invert mouse drug control of OrbitControls, so I changed controls.rotateSpeed for minus number.

like this:

var controlsrotatespeed = -0.15;
    switch (device) {
        case 'PC':
            controlsrotatespeed = -0.15;
            break;
        case 'TB':
            controlsrotatespeed = -0.4;
            break;
        case 'SP':
            controlsrotatespeed = -0.6;
            break;
    }
    controls.rotateSpeed = controlsrotatespeed;

It looks working, but I can’t judge this solution is good for any device.
Can anybody advise this?

Thank you