Jon S Berndt <[EMAIL PROTECTED]> said: > On Wed, 3 Apr 2002 18:44:23 -0500 > "Norman Vine" <[EMAIL PROTECTED]> wrote: > > >My take on this is that all we need is a 'fixed' position ie 'Center of > >Geometry' returned by the FDM. This fixed position can be anywhere > >on the AirFrame and it needs to be described more exactly in the > >individual model's configuration > >file so as the Viewer part of the program can do it's thing > > Yeah, I think that's where we're headed. It might work > that we could keep doing things as we (JSBSim) are doing, > with an added step. The initial CG of the aircraft could > be defined to be the refernce point that we both > understand. We would continue to "burn fuel" and drop > stores and launch carried vehicles, etc. and change the > CG. However, when reporting location (lat/lon/alt) we'd > need to report NOT merely the location of the current > aircraft CG, but the location of the current aircraft CG > minus the delta from the original - i.e. the location of > the original CG. (?) >
Ok, I think this means I can continue in the same direction with the viewer code. It would be just a matter of editing xml to switch from using /position/lat||lon||alt to somewhere else in the property tree, so if folks want to experiment they can. As for the xyz viewer eyepoint offsets, those will be in the /sim/view[x] tree(s) and can be set with aircraft-set.xml or whatever else. Best, Jim _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
