On mar 26 août 2008, Csaba Halász wrote: > On Tue, Aug 26, 2008 at 11:23 AM, gerard robin <[EMAIL PROTECTED]> wrote: > > On mar 26 août 2008, gerard robin wrote: > >> On lun 25 août 2008, Jon S. Berndt wrote: > >> > As posted by Dave in the JSBSim mailing list, I firmly agree: > >> > determining carrier location and orientation should not be an FDM > >> > specific function. This needs to be more configurable from the > >> > FlightGear side, so any FDM can take that information and do with it > >> > what it needs to do cat/hook ops. > > I might be misunderstanding something here, but currently the generic > groundcache code returns catapults and wires: > > // Return the nearest catapult to the given point > // pt in wgs84 coordinates. > double get_cat(double t, const SGVec3d& pt, > SGVec3d end[2], SGVec3d vel[2]); > > // Return 1 if the hook intersects with a wire. > // That test is done by checking if the quad spanned by the points pt* > // intersects with the line representing the wire. > // If the wire is caught, the cache will trace this wires endpoints > until // the FDM calls release_wire(). > bool caught_wire(double t, const SGVec3d pt[4]); > > // Return the location and speed of the wire endpoints. > bool get_wire_ends(double t, SGVec3d end[2], SGVec3d vel[2]); > > // Tell the cache code that it does no longer need to care for > // the wire end position. > void release_wire(void); > > The FDM only has to use this information. I have done that for the > wires, but I don't understand the catapult model so couldn't do the > cats.
Hello Csaba This will probably not answer directly your question. Anyhow , because most of my models were developed with older ( very old) FG version i do use that JSBSim patched version ( was done by Mathias Fröhlich) which include the Carrier features. It is perfectly working, catapults and wire using the FG Groundcache I have a lot of Naval AC which are still flying with it into some friends old computers (old, both, friends and computers :) ) Sure we can't get any comparison with JSBSim now, was the copper age :) I hope that, source, could give you explanations Here the JSBSIm source patched http://pagesperso-orange.fr/GRTux/JSBSim.tar.gz Cheers -- Gérard http://pagesperso-orange.fr/GRTux/ "J'ai décidé d'être heureux parce que c'est bon pour la santé. Voltaire " ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Flightgear-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/flightgear-devel
