Re: [Flightgear-devel] Re: Bypass FG Physics and Draw
[EMAIL PROTECTED] wrote: Does this mean that we would have the ability to save and load flight data so as to reproduce, say, a taxi, take off, pattern and landing at KSFO or another airport automatically (i.e., as a demo or as a training exercise). Perhaps a short flight around the SF area also showing off the new scenery? Could we ship such flights around scenic areas (Mount Ranier, Crater Lake, the Grand Canyon) for new users in the base package or as downloadables off of flightgear.org? How big would such files be? How much data needs to be kept, how much can be calculated on the fly? Do weather conditions need to be saved also? Would flights around scenic areas be done better as flight plans with waypoints or tied into this new playback method somehow? Can this playback tool be used as a training method for new simulator pilots? If we are not saving a real recorded flight, perhaps we can use a similar method to extract either entire flights or the last XX number of seconds of a flight to save to disk for later replay? MS FlightSimulator has an extensive tutorial that involves pre-saved flights which the users can break into at certain points in the flights. How difficult would it be to add something similar to FG and where would one begin (if no one is already working on something like this). Thanks! Ima ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d I think that the ability to play a flight recorded by an external source is different from the ability to save/load a flight from FG. In other words, I don't think we should save any state variable - ie parts of totality of the property tree. We have an initial state when FG is launched with a specific set of parameters. Now how do you fly ? You use your joystick, mouse, keyboard et al to interact with the simulator. So a recorded fligth could be defined as a list of user interactions paired with a time stamp, and to be more accurate a very limited set of properties could be added lets say every 10 or 20 seconds (position, heading, etc). The advantage would be : - short record file size - accurate property tree because the simultor would run exactly with the same imputs - easy to implement because it is not tied to the internals of the simulator (like fdm). Harald. ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
Re: [Flightgear-devel] STL string and lowercase
Jon Berndt wrote: Does anyone know a good algorithm to take an STL string to lower case? With or without locale support? All the best, David ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
RE: [Flightgear-devel] STL string and lowercase
-Original Message- From: Jon Berndt Sent: 24 August 2004 13:39 To: FlightGear developers discussions Subject: RE: [Flightgear-devel] STL string and lowercase With or without locale support? What is locale support? If that means for different character sets (as in different geographic and language areas), it has to work around the world, of course. Is that what locale refers to? Jon Yes, the locale accounts for the different habits of people around the world. Things like the fact that parts of Europe use a , as a decimal point, and . as a thousands separator. The locale settings usually also have information about currency symbol, date and time formet, time offset from GMT etc etc etc. Richard This e-mail has been scanned for Bede Scientific Instruments for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
Re: [Flightgear-devel] STL string and lowercase
Jon Berndt wrote: What is locale support? If that means for different character sets (as in different geographic and language areas), it has to work around the world, of course. Is that what locale refers to? Localization (L10N) and Internationalization (I18N) are more than just character sets -- different languages and even different regions using the same language have different ideas of what lower- and upper-case characters match, and some languages have no concept of case at all. There are many other issues involved, including sorting. Some languages also mix character sets from different languages -- for example, in Japanese you can see Japanese syllabic characters, Roman characters, and Han Chinese characters all in the same sentence. Unix has some support for localization -- you can set the locale (language/region) using an environment variable and then some functions in the standard library will use that to look up tables for case translation, sorting, etc. I imagine that there's something similar in Windows. I don't claim to be an expert in L10N or I18N, but Google or the Wikipedia can probably bring you to some good programmer's tutorials. All the best, David ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
[Flightgear-devel] (no subject)
Hello, I'd like to connect several different Joysticks to the Flightgear Simulator. Those are a stick for elevator and aileron, pedals for rudder and an extra joystick just for thrust. The stick is a CH Flightstick, the Pedals are CH pro-Pedals and the one for thrust is the Wingman Extreme. Which entries in the joystick.xml file do I have to change or which other .xml files are of importance? How is the numeration of the single axes done? Thanks a lot for your help! Stephan ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
Re: [Flightgear-devel] Re: Bypass FG Physics and Draw
While the idea is correct in principle, what you said it is not so straightforward. I've realised a flight recorder and a flight player for Flightgear for my thesis so I played around with few ideas. Basically I developed a virtual cockpit in a distributed environment that uses Flightgear to have some 'meaningful' flight data. I had to test different configurations so I needed to use always the same data that is to fly always the same flight. My experience is that it's very difficult to synchronise Flightgear with an initial-position-and-flight-command approach since the only cross-platform means of communication available is the socket. You always end up with a time shifting of the packets that produces a space shifting of the flight. Therefore sometimes you try to manouevre into a mountain while you did't in the original flight. Now what i've done is to record, through a socket, all the flight at an accettable frame rate onto a file by using the native-fdm data structure. (this is the recorder). Then I wrote a player that reads the file and sends the data over to Flightgear (previously set up with the external-fdm option). It works quite well apart from some adjustment in the speed of replay you need to experiment with. Roberto --- Harald JOHNSEN [EMAIL PROTECTED] ha scritto: [EMAIL PROTECTED] wrote: Does this mean that we would have the ability to save and load flight data so as to reproduce, say, a taxi, take off, pattern and landing at KSFO or another airport automatically (i.e., as a demo or as a training exercise). Perhaps a short flight around the SF area also showing off the new scenery? Could we ship such flights around scenic areas (Mount Ranier, Crater Lake, the Grand Canyon) for new users in the base package or as downloadables off of flightgear.org? How big would such files be? How much data needs to be kept, how much can be calculated on the fly? Do weather conditions need to be saved also? Would flights around scenic areas be done better as flight plans with waypoints or tied into this new playback method somehow? Can this playback tool be used as a training method for new simulator pilots? If we are not saving a real recorded flight, perhaps we can use a similar method to extract either entire flights or the last XX number of seconds of a flight to save to disk for later replay? MS FlightSimulator has an extensive tutorial that involves pre-saved flights which the users can break into at certain points in the flights. How difficult would it be to add something similar to FG and where would one begin (if no one is already working on something like this). Thanks! Ima ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d I think that the ability to play a flight recorded by an external source is different from the ability to save/load a flight from FG. In other words, I don't think we should save any state variable - ie parts of totality of the property tree. We have an initial state when FG is launched with a specific set of parameters. Now how do you fly ? You use your joystick, mouse, keyboard et al to interact with the simulator. So a recorded fligth could be defined as a list of user interactions paired with a time stamp, and to be more accurate a very limited set of properties could be added lets say every 10 or 20 seconds (position, heading, etc). The advantage would be : - short record file size - accurate property tree because the simultor would run exactly with the same imputs - easy to implement because it is not tied to the internals of the simulator (like fdm). Harald. ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d ___ Yahoo! Mail: gratis 100 MB per i messaggi e allegati da 10 MB http://mail.yahoo.it ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
[Flightgear-devel] (no subject)
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[Flightgear-devel] Update: Robin Peel
For what it's worth, here is an update from Robin Peel who maintains the database of airports and Nav Aids for FlightGear and X-Plane: All: It has not been possible to publish new data for a few months due to other pressures on my time. I am now working on a demanding project in my 'day job' which has a weekly commute of nearly 5,000 miles (KSNA-KLGA), and we also just relocated from New Mexico to a new home in southern California (just a few miles from my new home airport of Santa Ana - Orange County, KSNA). Just as soon as I am able, I will incorporate the huge backlog of database updates into the master database and publish new data. Do not fear - none of the updates submitted to me have been lost - the next update will be huge! As soon as this next update has been released, I will work on a number of improvements to the scope and quality of the database. Also please note my new e-mail address for X-Plane issues ([EMAIL PROTECTED] http://games.groups.yahoo.com/group/xplane-news/post?postID=kxnzIVHxpUC2XgZX0h03NbhWRJWo3Cz6VwlhinzA86oP2C0v0ErUrkaVlY8rUfGobQcMxuMVumaWtA). Ben Supnik has graciously allowed me to use an address at his XSquawkBox project. - Robin ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
Re: [Flightgear-devel] Update: Robin Peel
On Tue, 24 Aug 2004 11:13:42 -0500 Curtis L. Olson [EMAIL PROTECTED] wrote: [ quoting Robin Peel ] Also please note my new e-mail address for X-Plane issues ([EMAIL PROTECTED] http://games.groups.yahoo.com/group/xplane-news/post?postID=kxnzIVHxpU C2XgZX0h03NbhWRJWo3Cz6VwlhinzA86oP2C0v0ErUrkaVlY8rUfGobQcMxuMVumaWtA). Ben Supnik has graciously allowed me to use an address at his XSquawkBox project. Hi, I'm a bit confused by this. Is the email address secret, and you have to go through Yahoo groups to send him email? I sent him some email about the taxiway designation stuff in updates a few weeks ago, and now I'm wondering if I sent to an incorrect address . . . -c -- Chris Metzler [EMAIL PROTECTED] (remove snip-me. to email) As a child I understood how to give; I have forgotten this grace since I have become civilized. - Chief Luther Standing Bear pgpnwfwkCKgdu.pgp Description: PGP signature ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
Re: [Flightgear-devel] Update: Robin Peel
Chris Metzler wrote: On Tue, 24 Aug 2004 11:13:42 -0500 Curtis L. Olson [EMAIL PROTECTED] wrote: [ quoting Robin Peel ] Also please note my new e-mail address for X-Plane issues ([EMAIL PROTECTED] http://games.groups.yahoo.com/group/xplane-news/post?postID=kxnzIVHxpU C2XgZX0h03NbhWRJWo3Cz6VwlhinzA86oP2C0v0ErUrkaVlY8rUfGobQcMxuMVumaWtA). Ben Supnik has graciously allowed me to use an address at his XSquawkBox project. Hi, I'm a bit confused by this. Is the email address secret, and you have to go through Yahoo groups to send him email? I sent him some email about the taxiway designation stuff in updates a few weeks ago, and now I'm wondering if I sent to an incorrect address . . . I just pasted from his Yahoo groups email and that's what I got. Yahoo groups hides your email address, and in today's world of spam, I hestate to post people's actual email addresses anyway ... Curt. -- Curtis Olsonhttp://www.flightgear.org/~curt HumanFIRST Program http://www.humanfirst.umn.edu/ FlightGear Project http://www.flightgear.org Unique text:2f585eeea02e2c79d7b1d8c4963bae2d ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
Re: [Flightgear-devel] Re: Bypass FG Physics and Draw
For a real flight playback, if attitude accuracy is not so important, only GPS position data (one shot every second) is enought for a smooth FG playback (if no acrobatics have been perform...). I think this playback function could be a nice for the debriefing of Flight Intructors who let their students for their first solo country flight. Spy on board... - Original Message - From: Roberto Manca [EMAIL PROTECTED] To: FlightGear developers discussions [EMAIL PROTECTED] Sent: Tuesday, August 24, 2004 3:11 PM Subject: Re: [Flightgear-devel] Re: Bypass FG Physics and Draw While the idea is correct in principle, what you said it is not so straightforward. I've realised a flight recorder and a flight player for Flightgear for my thesis so I played around with few ideas. Basically I developed a virtual cockpit in a distributed environment that uses Flightgear to have some 'meaningful' flight data. I had to test different configurations so I needed to use always the same data that is to fly always the same flight. My experience is that it's very difficult to synchronise Flightgear with an initial-position-and-flight-command approach since the only cross-platform means of communication available is the socket. You always end up with a time shifting of the packets that produces a space shifting of the flight. Therefore sometimes you try to manouevre into a mountain while you did't in the original flight. Now what i've done is to record, through a socket, all the flight at an accettable frame rate onto a file by using the native-fdm data structure. (this is the recorder). Then I wrote a player that reads the file and sends the data over to Flightgear (previously set up with the external-fdm option). It works quite well apart from some adjustment in the speed of replay you need to experiment with. Roberto --- Harald JOHNSEN [EMAIL PROTECTED] ha scritto: [EMAIL PROTECTED] wrote: Does this mean that we would have the ability to save and load flight data so as to reproduce, say, a taxi, take off, pattern and landing at KSFO or another airport automatically (i.e., as a demo or as a training exercise). Perhaps a short flight around the SF area also showing off the new scenery? Could we ship such flights around scenic areas (Mount Ranier, Crater Lake, the Grand Canyon) for new users in the base package or as downloadables off of flightgear.org? How big would such files be? How much data needs to be kept, how much can be calculated on the fly? Do weather conditions need to be saved also? Would flights around scenic areas be done better as flight plans with waypoints or tied into this new playback method somehow? Can this playback tool be used as a training method for new simulator pilots? If we are not saving a real recorded flight, perhaps we can use a similar method to extract either entire flights or the last XX number of seconds of a flight to save to disk for later replay? MS FlightSimulator has an extensive tutorial that involves pre-saved flights which the users can break into at certain points in the flights. How difficult would it be to add something similar to FG and where would one begin (if no one is already working on something like this). Thanks! Ima ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d I think that the ability to play a flight recorded by an external source is different from the ability to save/load a flight from FG. In other words, I don't think we should save any state variable - ie parts of totality of the property tree. We have an initial state when FG is launched with a specific set of parameters. Now how do you fly ? You use your joystick, mouse, keyboard et al to interact with the simulator. So a recorded fligth could be defined as a list of user interactions paired with a time stamp, and to be more accurate a very limited set of properties could be added lets say every 10 or 20 seconds (position, heading, etc). The advantage would be : - short record file size - accurate property tree because the simultor would run exactly with the same imputs - easy to implement because it is not tied to the internals of the simulator (like fdm). Harald. ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d ___ Yahoo! Mail: gratis 100 MB per i messaggi e allegati da 10 MB http://mail.yahoo.it ___ Flightgear-devel mailing list [EMAIL PROTECTED]
Re: [Flightgear-devel] Update: Robin Peel
Curtis L. Olson wrote: Chris Metzler wrote: On Tue, 24 Aug 2004 11:13:42 -0500 Curtis L. Olson [EMAIL PROTECTED] wrote: [ quoting Robin Peel ] Also please note my new e-mail address for X-Plane issues ([EMAIL PROTECTED] http://games.groups.yahoo.com/group/xplane-news/post?postID=kxnzIVHxpU C2XgZX0h03NbhWRJWo3Cz6VwlhinzA86oP2C0v0ErUrkaVlY8rUfGobQcMxuMVumaWtA). Ben Supnik has graciously allowed me to use an address at his XSquawkBox project. Hi, I'm a bit confused by this. Is the email address secret, and you have to go through Yahoo groups to send him email? I sent him some email about the taxiway designation stuff in updates a few weeks ago, and now I'm wondering if I sent to an incorrect address . . . I just pasted from his Yahoo groups email and that's what I got. Yahoo groups hides your email address, and in today's world of spam, I hestate to post people's actual email addresses anyway ... Curt. Well, I'm sure if you send mail to the address on the X-Plane site it will eventually get to him. Josh ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
[Flightgear-devel] 3-space coordinate transformations
Does anyone know of where in the FG code base I can find a function that takes a position in 3-space and gives the resulting position after a pitch/roll/yaw set of rotations? In case you're wondering, this is needed by the new submodel system. A submodel is an object that has a position (x,y,z) defined relative to the center of the user aircraft (say a left-wing drop tank, which is attached to the airplane at 1,-8,-3, where x is forward, y is right, and z is up). If the airplane rotates to a certain pitch/roll/yaw, what is the new location of the drop tank? I need to know this so the drop tank can be released from the correct world coordinates (lat,lon,alt) no matter the aircraft's orientation. I assume this function already exists somewhere, either in SimGear or in an FDM. From what I've managed to learn about the matrices involved, I see that there are many more ways of getting this wrong than there are of getting it right :) Especially for me. I'm flexible on the coordinate system. I know axis conventions might be different. Dave -- David Culp [EMAIL PROTECTED] ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
Re: [Flightgear-devel] 3-space coordinate transformations
David Culp wrote: Does anyone know of where in the FG code base I can find a function that takes a position in 3-space and gives the resulting position after a pitch/roll/yaw set of rotations? I assume this function already exists somewhere, either in SimGear or in an FDM. From what I've managed to learn about the matrices involved, I see that there are many more ways of getting this wrong than there are of getting it right :) Especially for me. There's one in YASim, in Glue.cpp. It uses a slightly different cartesian coordinate system (x forward, y left, z up) than JSBSim does, but I'm pretty sure the euler axes are the same. Andy ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
