Camera controller can't handle very small sensitivities

[ThomasOrtner]

behavior

When using a very small navigation sensitivity, e.g. 10^-5, the mouse interactions zoom, pan, and wheel zoom do not move the camera, while keyboard movement works fine.

expected behavior

super accurate pan and zoom movements with arbitrarily small movement intervals

my setup

let sensitivity = -5.0
let config = { 
  cam'.freeFlyConfig with
    panMouseSensitivity       = exp(sensitivity) * 0.0025
    dollyMouseSensitivity     = exp(sensitivity) * 0.0025
    zoomMouseWheelSensitivity = exp(sensitivity) * 0.1
    moveSensitivity           = sensitivity
    lookAtMouseSensitivity    = 0.004
    lookAtDamping             = 50.0
    }