Need a trackbar control mode

[wongshek]

Could you add a trackbar control mode to this great viewer, just like meshlab~
The default mouse and keyboard control modes are a bit uncomfortable to use now :(

[shg8]

Do you mean a trackball? There's this imGUI library that I should be able to integrate fairly easily if it helps your use case.

[wongshek]

Yes, it's trackball, not trackbar. imGUI library is exactly what I need, it would be great if it could be integrated, thank you very much :)