#16 2-axis control should be configurable

[Vaken]

It seems that the control is currently assumed to be
made via the aileron stick for the rudder for 2-axis
flight.

That's not always how it's done. We put it on the
right stick (mode 1) with the elevator being on the
left stick.

As it's currently done, going from a 2-axis model to a
3-axis one means that the input control must be
reconfigured.

It would be nice to have a separate configuration for
2-axis and 3-axis models.

[Jan Reucker]

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Well, there are several different philosophies here: Some
people like to have the roll-controlling function on the
same stick for all models (and this is rudder for a 2-axis
plane), others like the rudder to stay where it is when
switching to an aileron plane. In the first case you have
two options: plug the rudder servo into the aileron output
of the Rx, or switch modes on the Tx. I'm usually flying the
same Tx mode for all models and plug rudder into aileron on
2-axis gliders, simply because I'm used to it.

The original authors of most 2-axis-models in CRRCsim must
have done it the same way, because this is defined in the
model XML files and not in the program code. It could be
made configurable in a future version of CRRCsim, but one
has to think of a convenient and universal way to integrate
this feature into the current flight model code.

I wouldn't consider this to be a bug, rather a feature
request, so I redeclare this item accordingly.

Kind regards,
Jan R.