[vtkusers] mouse control rotation (following the last email)

[Krista Lam]

I'm using Tcl/tk programming.

Dear all,

Is anyone know how to change the way of rotation when we press
the left mouse button? I would like the rotation rotating only with
respect to x-axis when I press the mouse button, how to do that? Thanks
very much.

Best Regards,
Yee