Norman Vine writes: > Christian Mayer writes: > > > >Norman Vine wrote: > >> > >> Christian Mayer writes: > >> > > >> >Norman Vine wrote: > >> >> > >> >> Well if you just wanted to drift with the wind and be 'cheesy' > >> >> you could use the simgear direct geodetic solver to get a new lat lon > >> >> based on current position speed and course > >> > >> int geo_direct_wgs_84 ( double alt, double lat1, double > >> > >> Need anything else ?? > > > >Thnks, that should do the job. > > The 'Brakes' could work as a simulated 'tethering device' < anchor > > while on the ground :-)
One thing I've noticed (from the magic carpet mode) is that if you call geo_direct_wgs_84() with zero distance and zero direction (i.e. zero velocity) you don't get *exactly* the starting lat/lon back because of numerical precision issues. This is not a big deal at higher velocities, but is a problem at very slow velocities. Curt. -- Curtis Olson Intelligent Vehicles Lab FlightGear Project Twin Cities [EMAIL PROTECTED] [EMAIL PROTECTED] Minnesota http://www.menet.umn.edu/~curt http://www.flightgear.org _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
