Re: [Flightgear-devel] Conditional Input assignments

[Alex P. <ale...@ie...>]

> On Saturday 16 June 2001 07:26 pm, Alex wrote:
> > When button X is depressed,
> > 	joystick channel Y has a linear mapping to P and Q is forced to zero.
> > When button X is released,
> > 	joystick channel Y has a linear mapping to Q and P is forced to zero.

Tony asked: 
> I don't know the answer but I'd sure be interested in hearing why you'd like 
> to do this.

Because ...
(1) When doing a demo in the field, rudder pedals are not feasible.
(2) Joystick handle rotation as the rudder axis is inaccurate in flight.
(3) Linking aileron and rudder gives silly negative dutch roll effects.
(4) Getting diff brakes from lateral joystick disables common brakes.
(5) Ground steering needs rudder or differential braking support.
(6) The SJC scenery needs ground handling for effective demonstration.

An alternative would be to define the brakes as sum and difference 
of the two joystick axes, but I don't know how to do that either.
Also, that would not be a very good solution because full back elevator is
used during landing flare and having the brakes on would burst the tires.