Jon S. Berndt wrote: > OK. But I am not sure I agree with FlightGear's convention.
It less a FlightGear thing than a PC joystick convention, I believe. Stomping on the left pedal makes the rudder axis value returned from the joystick driver positive. > The rudder Z axis is downward. [...] Personally, I would have > thought that a positive aileron deflection should result in a > positive roll rate, but it is opposite. That's coordinate system dependent. YASim (internally) has X forward, Y left and Z up. So a positive elevator (joystick up) produces a positive torque about Y, positive aileron* (joystick left) produces a positive torque about X, and positive rudder produces a positive torque about Z. Hopefully I got the conventions right. The point being not that YASim's coordinate system is inherently better**, but that making the joystick inputs match the coordinate sense is possible with a right handed coordinate system. Andy * On the left wing, which is the one YASim defines as the master. A vertical stabilizer is just an unmirrored left wing with a dihedral of 90. ** The real reason it's better is that I can model it on my right hand without pain while typing at the keyboard. -- Andrew J. Ross NextBus Information Systems Senior Software Engineer Emeryville, CA [EMAIL PROTECTED] http://www.nextbus.com "Men go crazy in conflagrations. They only get better one by one." - Sting (misquoted) _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
