[Flightgear-devel] A simple question
Hello all, I'm rather new to Flightgear, and therefore apologise for a rather straightforward question. Basically, with which functions should I convert the aircraft orientation from the angle axis representation that seems to be delivered to the multiplayer server by T_PositionMsg to a heading, roll and pitch? Thanks for any help you can offer. Gordon. -- Dr Gordon Hart This email and any attachments are confidential to the intended recipient and may also be privileged. If you are not the intended recipient please delete it from your system and notify the sender. You should not copy it or use it for any purpose nor disclose or distribute its contents to any other person. MBDA UK Limited, a company registered in England and Wales, registration number 3144919 whose registered office is at Six Hills Way, Stevenage, Hertfordshire, SG1 2DA, England. __ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email __- 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=100url=/___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Performance and initialization patch
Hi, it seems this message was deleted (over 40k). I cant find it on the archives so im resending it now with a compressed patch. Please ignore if this is a repost. -- this patch tries to speed up airways laoding. The strutils funcions are meaningfully commented and renamed. It also does timings on the load times. My results: 2 runs no changes wrt. to last patch: Airport load time: 1607 Metar load time: 16 Navaid load time: 499 Airway load time: 1170 Airport load time: 1607 Metar load time: 16 Navaid load time: 483 Airway load time: 1185 --- after changes to airways loader. Airport load time: 1622 Metar load time: 8 Navaid load time: 499 Airway load time: 690 Airport load time: 1614 Metar load time: 8 Navaid load time: 505 Airway load time: 689 Airport load time: 1610 Metar load time: 8 Navaid load time: 498 Airway load time: 689 Airport load time: 1664 Metar load time: 8 Navaid load time: 510 Airway load time: 699 Airport load time: 1684 Metar load time: 7 Navaid load time: 513 Airway load time: 684 -- Then i noticed i had the files (*.dat) unpacked because i'd been peeking at the contents. After repacking i got the following times: Airport load time: 1806 Metar load time: 7 Navaid load time: 526 Airway load time: 732 Airport load time: 1790 Metar load time: 7 Navaid load time: 522 Airway load time: 721 Airport load time: 1793 Metar load time: 7 Navaid load time: 528 Airway load time: 721 greetings, yon On Thu, Nov 27, 2008 at 11:58 AM, Frederic Bouvier [EMAIL PROTECTED] wrote: Tools Options Text editor C/C++ Tabs Thank you, i hope there are no evil tabs now. flightgear-patch.rar Description: Binary data - 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=100url=/___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
[Flightgear-devel] Scenery download
I've been trying to download scenery from flightgear.org since yesterday without success. Is there any problem with the server? With the aircraft there is no problem. Fabian - 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=100url=/___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Performance and initialization patch
Hi, took a quick stab at navaid parsing. Also, i modified strutils::do_strip to avoid calling string::operator[] excessively. Results: Airport load time: 1769 Metar load time: 7 Navaid load time: 349 Airway load time: 726 Airport load time: 1770 Metar load time: 7 Navaid load time: 348 Airway load time: 728 greetings, yon On Fri, Nov 28, 2008 at 11:09 AM, Yon Uriarte [EMAIL PROTECTED] wrote: Hi, it seems this message was deleted (over 40k). I cant find it on the archives so im resending it now with a compressed patch. Please ignore if this is a repost. -- this patch tries to speed up airways laoding. The strutils funcions are meaningfully commented and renamed. It also does timings on the load times. My results: 2 runs no changes wrt. to last patch: Airport load time: 1607 Metar load time: 16 Navaid load time: 499 Airway load time: 1170 Airport load time: 1607 Metar load time: 16 Navaid load time: 483 Airway load time: 1185 --- after changes to airways loader. Airport load time: 1622 Metar load time: 8 Navaid load time: 499 Airway load time: 690 Airport load time: 1614 Metar load time: 8 Navaid load time: 505 Airway load time: 689 Airport load time: 1610 Metar load time: 8 Navaid load time: 498 Airway load time: 689 Airport load time: 1664 Metar load time: 8 Navaid load time: 510 Airway load time: 699 Airport load time: 1684 Metar load time: 7 Navaid load time: 513 Airway load time: 684 -- Then i noticed i had the files (*.dat) unpacked because i'd been peeking at the contents. After repacking i got the following times: Airport load time: 1806 Metar load time: 7 Navaid load time: 526 Airway load time: 732 Airport load time: 1790 Metar load time: 7 Navaid load time: 522 Airway load time: 721 Airport load time: 1793 Metar load time: 7 Navaid load time: 528 Airway load time: 721 greetings, yon On Thu, Nov 27, 2008 at 11:58 AM, Frederic Bouvier [EMAIL PROTECTED] wrote: Tools Options Text editor C/C++ Tabs Thank you, i hope there are no evil tabs now. fg.rar Description: Binary data - 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=100url=/___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] A simple question
For JSBSim aircraft, there are properties you can read that give the Euler angles you seek. I'd wager the other FDMs have a similar set of properties available. These are the names of the properties sans the FlightGear-generated prefix. I can't recall what that prefix is, but perhaps someone here can refresh my memory (please!): attitude/phi-rad attitude/theta-rad attitude/psi-rad attitude/roll-rad attitude/pitch-rad attitude/heading-true-rad Jon From: Hart, Gordon (UK) [mailto:[EMAIL PROTECTED] Sent: Friday, November 28, 2008 6:15 AM To: flightgear-devel@lists.sourceforge.net Subject: [Flightgear-devel] A simple question Hello all, I'm rather new to Flightgear, and therefore apologise for a rather straightforward question. Basically, with which functions should I convert the aircraft orientation from the angle axis representation that seems to be delivered to the multiplayer server by T_PositionMsg to a heading, roll and pitch? Thanks for any help you can offer. Gordon. -- Dr Gordon Hart __ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email __ This email and any attachments are confidential to the intended recipient and may also be privileged. If you are not the intended recipient please delete it from your system and notify the sender. You should not copy it or use it for any purpose nor disclose or distribute its contents to any other person. MBDA UK Limited, a company registered in England and Wales, registration number 3144919 whose registered office is at Six Hills Way, Stevenage, Hertfordshire, SG1 2DA, England. - 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=100url=/___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] A simple question
On Fri, 2008-11-28 at 12:15 +, Hart, Gordon (UK) wrote: Hello all, I'm rather new to Flightgear, and therefore apologise for a rather straightforward question. Basically, with which functions should I convert the aircraft orientation from the angle axis representation that seems to be delivered to the multiplayer server by T_PositionMsg to a heading, roll and pitch? Thanks for any help you can offer. Gordon. -- Dr Gordon Hart Unfortunately not a simpler answer. There is a short function in the fgmap sources: static void euler_get(float lat, float lon, float ox, float oy, float oz, float *heading, float *pitch, float *roll) find it here: http://pigeond.net/git/?p=flightgear/fgmap.git;a=blob_plain;f=src/fg_server_xml.cxx;hb=HEAD Ron - 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=100url=/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Scenery download
On Fri, 2008-11-28 at 16:13 +0200, Fabian Grodek wrote: I've been trying to download scenery from flightgear.org since yesterday without success. Is there any problem with the server? With the aircraft there is no problem. Fabian The main scenery server is often too busy and won't talk to anyone else. Try a mirror, like this one: http://mirrors.ibiblio.org/pub/mirrors/flightgear/ftp/Scenery-1.0.1/ Ron - 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=100url=/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Performance and initialization patch
On Fri, Nov 28, 2008 at 10:18 AM, Yon Uriarte wrote: Hi, took a quick stab at navaid parsing. Also, i modified strutils::do_strip to avoid calling string::operator[] excessively. Results: Airport load time: 1769 Metar load time: 7 Navaid load time: 349 Airway load time: 726 Airport load time: 1770 Metar load time: 7 Navaid load time: 348 Airway load time: 728 Am I misreading your stats? There doesn't seem to be any significant different between your two sets of timing data (?) Curt. -- Curtis Olson: http://baron.flightgear.org/~curt/ - 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=100url=/___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Scenery download
On Fri, Nov 28, 2008 at 6:23 PM, Ron Jensen [EMAIL PROTECTED] wrote: The main scenery server is often too busy and won't talk to anyone else. Try a mirror, like this one: http://mirrors.ibiblio.org/pub/mirrors/flightgear/ftp/Scenery-1.0.1/ Ron Thank you Ron, the link is talking to me ! Fabian - 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=100url=/___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Performance and initialization patch
hi, those are 2 consecutive samples of the new navaid.dat parser. Compare with the times in the previous posts. It has gone down from 520msec to 350msec. Not a big difference on a fast machine, but it was a very easy change. On slower machines it should add up. greetings, yon On Fri, Nov 28, 2008 at 5:25 PM, Curtis Olson [EMAIL PROTECTED] wrote: On Fri, Nov 28, 2008 at 10:18 AM, Yon Uriarte wrote: Hi, took a quick stab at navaid parsing. Also, i modified strutils::do_strip to avoid calling string::operator[] excessively. Results: Airport load time: 1769 Metar load time: 7 Navaid load time: 349 Airway load time: 726 Airport load time: 1770 Metar load time: 7 Navaid load time: 348 Airway load time: 728 Am I misreading your stats? There doesn't seem to be any significant different between your two sets of timing data (?) Curt. -- Curtis Olson: http://baron.flightgear.org/~curt/ - 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=100url=/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel - 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=100url=/___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Scenery download
Fabian Grodek wrote: I've been trying to download scenery from flightgear.org since yesterday without success. Is there any problem with the server? If you're familiar with FlightGear CVS, then you might want to build the new 'terrasync' tool and download your Scenery from the pre-defined SVN service. Cheers, Martin. -- Unix _IS_ user friendly - it's just selective about who its friends are ! -- - 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=100url=/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Call for aircraft nominations
On Sunday 05 October 2008 10:13:54 Durk Talsma wrote: While I'm at it. :-) With each release we include a selection of representative aircraft that highlight FlightGear's capabilities. Inclusion criteria include: Completeness, variability across categories, realism, suitability for demo flights (think of aerotowing, AI/Multiplayer refueling, carrier landing, etc etc.), relative ease of operation (ie don't want to intimidate new users too much), and disk space (we don't want to bloat the base package too much). So, with these criteria in mind, what would be your current top 10 of aircraft? I hope to make some serious progress in pushing out a release candidate this weekend. So far I've been given valuable suggestions for potential aircraft to include in the release. I still have a gut feeling that there might be hidden little gems in our CVS repository that haven't received much attention yet. So, if you have your top ten ready, please let me know... Cheers, Durk - 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=100url=/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Performance and initialization patch
Hi,
another little detail. In zfstream.cxx the input buffer for reading
buffered .gz files is set at page_size (4k). It is my understanding this
means files will be read at 4k chunks (uncompressed 4k). By changing the
multiplier to 16 (64k) or even 64 i could unscientifically measure a small
gain. I believe gzstream is used for terrain loading, too. I guess a value
of 16*page_size should be adecuate, not too small, small enough that it
might stay in the cache for the caller to process. This should save on
system calls, too.
Non scientific measurements, twice for each size:
original, 1 page buffer:
Airport load time: 1769
Metar load time: 7
Navaid load time: 349
Airway load time: 726
Airport load time: 1770
Metar load time: 7
Navaid load time: 348
Airway load time: 728
istream.gz buffer from 1 to 16 pages size
Airport load time: 1746
Metar load time: 7
Navaid load time: 343
Airway load time: 716
Airport load time: 1742
Metar load time: 8
Navaid load time: 343
Airway load time: 724
at 64 pages
Airport load time: 1728
Metar load time: 7
Navaid load time: 344
Airway load time: 720
Airport load time: 1736
Metar load time: 7
Navaid load time: 345
Airway load time: 728
Patch:
Index: zfstream.cxx
===
RCS file: /var/cvs/SimGear-0.3/source/simgear/misc/zfstream.cxx,v
retrieving revision 1.5
diff -u -r1.5 zfstream.cxx
--- zfstream.cxx 25 Jul 2008 18:35:42 - 1.5
+++ zfstream.cxx 28 Nov 2008 17:15:05 -
@@ -42,7 +42,7 @@
ibuffer(0)
{
// try {
-ibuf_size = page_size / sizeof(char);
+ibuf_size = 16*(page_size / sizeof(char));
ibuffer = new char [ibuf_size];
// } catch (...) {
//delete [] ibuffer;
-
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Re: [Flightgear-devel] Scenery download
On Fri, Nov 28, 2008 at 6:52 PM, Martin Spott [EMAIL PROTECTED]wrote: Fabian Grodek wrote: I've been trying to download scenery from flightgear.org since yesterday without success. Is there any problem with the server? If you're familiar with FlightGear CVS, then you might want to build the new 'terrasync' tool and download your Scenery from the pre-defined SVN service. Cheers, Martin. -- Well, I'm not really familiar with FlighGear CVS, but I think I'll get into that soon. I see it's well worth. Thank you. Fabian - 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=100url=/___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
[Flightgear-devel] Constant property in a JSBSim model
Hello, I have a JSBSim aircraft model in which, at the beginning of the flight_control block, I defined a constant property as follows: property value=0.80fcs/KSelev/property I need this constant to factor a number of coefficients in the aerodynamics section. Although this seems to work in standalone JSBSim simulations, in FlightGear this property gets the value of 0.0. What is the correct way of defining a constant? (seems a very stupid question, so I accept similar kind of answers :) ) Fabian - 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=100url=/___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Constant property in a JSBSim model
Is this again a factor of using an older version of JSBSim? Check the file, FGFCS.cpp, compared between the latest JSBSim release and the code you are using in FlightGear. If you are using the same code, this should work. Jon From: Fabian Grodek [mailto:[EMAIL PROTECTED] Sent: Friday, November 28, 2008 1:53 PM To: FlightGear developers discussions Subject: [Flightgear-devel] Constant property in a JSBSim model Hello, I have a JSBSim aircraft model in which, at the beginning of the flight_control block, I defined a constant property as follows: property value=0.80fcs/KSelev/property I need this constant to factor a number of coefficients in the aerodynamics section. Although this seems to work in standalone JSBSim simulations, in FlightGear this property gets the value of 0.0. What is the correct way of defining a constant? (seems a very stupid question, so I accept similar kind of answers :) ) Fabian - 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=100url=/___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] altimeter patch
On Fri, Nov 28, 2008 at 6:57 AM, Syd [EMAIL PROTECTED] wrote: The reason I would like this added , once I find a solution to the listeners writing to each other You could compare the value already in the property to the newly calculated one, and only update if they differ (possibly allowing for a little floating point error). -- Csaba/Jester - 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=100url=/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Constant property in a JSBSim model
On vendredi 28 novembre 2008, Jon S. Berndt wrote: Is this again a factor of using an older version of JSBSim? Check the file, FGFCS.cpp, compared between the latest JSBSim release and the code you are using in FlightGear. If you are using the same code, this should work. Jon From: Fabian Grodek [mailto:[EMAIL PROTECTED] Sent: Friday, November 28, 2008 1:53 PM To: FlightGear developers discussions Subject: [Flightgear-devel] Constant property in a JSBSim model Hello, I have a JSBSim aircraft model in which, at the beginning of the flight_control block, I defined a constant property as follows: property value=0.80fcs/KSelev/property I need this constant to factor a number of coefficients in the aerodynamics section. Although this seems to work in standalone JSBSim simulations, in FlightGear this property gets the value of 0.0. What is the correct way of defining a constant? (seems a very stupid question, so I accept similar kind of answers :) ) Fabian And, you should get with FG cvs on your console, during the moading of JSBSim, for instance the following messages Declared properties systems/hook/tailhook-cmd-norm (initial value: 0) systems/hook/tailhook-length-ft (initial value: 4) systems/hook/tailhook-pos-min-deg (initial value: -5) systems/hook/tailhook-pos-max-deg (initial value: 50) systems/hook/tailhook-offset-x-in (initial value: 210.17) systems/hook/tailhook-offset-y-in (initial value: 0) systems/hook/tailhook-offset-z-in (initial value: -31.57) Channel Hook -- 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=100url=/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Performance and initialization patch
Yon Uriarte wrote: Hi, logstream.cxx: Modified a bit the logstream implementation to avoid (stack) descent down into (iostream) hell if we are not logging anything anyway. As it is right now, it happily builds the string to print (iostream hell, deep stacks, strings new/delete/copy) and then discards it. I´ve counted over half a million calls to sglog() before the scenery is fully loaded (cant remember with what configuration, more on config below). Also, the global logstream is initialized once at startup (constructors, struct ignore_me), no need to check everytime it is called if it's initialized. Maybe if sglog() is used in any global constructor it could happen that it is not initialized and crash, so please, dont use it in the global constructors ;) I've reworked the logstream changes a bit and checked this in. Thanks. Tim - 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=100url=/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
