Jon S Berndt wrote:
On Fri, 13 Feb 2004 08:22:15 -0800 Andy Ross <[EMAIL PROTECTED]> wrote:
Jon S. Berndt wrote:
Can the view offset or rendering code (whatever it is that draws the 3D aircraft models) move the origin of the set of vertices that defines the model per-frame so that the CG aligns with that reported by the FDM?
Well, yes, because they're just properties. But unless I misunderstand you, you don't want to do that. The FDM reports the lat/lon/alt of the aircraft coordinate origin, not the c.g., no?
Andy
No.
JSBSim currently (the version in in FlightGear, anyhow), reports the position of the CG, since that is what the EOM natively tracks, anyhow. We can *report* anything, though of course, as we have intimate knowledge of euler angles, CG position, and offset from the CG (dynamic) to any other point on the aircraft at any time.
So then the pilot's eyepoint is relative to the dynamic CG? I guess I just assumed JSBSim reported a position from a
fixed point on the aircraft. Ack! Would your VRP then become the point from which the pilot's eyepoint is derived?
-- Russ
Conway's Law: "The structure of a system tends to mirror the
structure of the group producing it."
-- Mel Conway Datamation (1968)_______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
