Re: [Flightgear-devel] Messages FDM -- FGFS

2001-11-14 Thread Andy Ross
David Megginson wrote: Jon S. Berndt wrote: I'd like to consider using this to send the sound manager events of interest, but a protocol for message passing must be reached. Jon sent me some ideas by private mail, and they look workable -- it really comes down to a judgement call about

Re: [Flightgear-devel] Stall horn question

2001-11-28 Thread Andy Ross
David Megginson wrote: Alex Perry wrote: Many Cessnas have a small metal tab that sticks out of the front of the wing, at the stagnant airflow point for the desired angle of attack. Do you have to turn it off manually when you're sitting on the tarmac or taxiing slowly? It

Re: [Flightgear-devel] Stall horn question

2001-11-29 Thread Andy Ross
Don Baker wrote: It isn't gravity. It is simply that only at high angle of attack conditions is there enough air to shove it upward. Ahem, shove it upwards against what force? :) At zero speed, there is zero aerodynamic force. What holds it down, if not gravity? At least on the Cherokee

[Flightgear-devel] YASim, yet another FDM

2001-11-29 Thread Andy Ross
OK, as promised, I've put together a first release of my YASim (sue me, I couldn't think of a better name) FDM for FlightGear. Actually, I promised over on the flightmodel list, for those who aren't subscribed. Basically, this is a rough, first cut of a different take on FDM design. It's

Re: [Flightgear-devel] RFC: Keybinding Changes for Powerplant

2001-12-04 Thread Andy Ross
Dave Luff wrote: John Wojnaroski writes: Some want to work spins, prop contact points, etc. But a LOT of accidents occur because the PIC failed to do a proper weight and balance, overloaded the A/C, and/or exceeded the CG limits. Something to consider - how about a weight and

[Flightgear-devel] Another YASim source drop

2001-12-05 Thread Andy Ross
OK, I've finally cobbled YASim back into a releasable state, so there's a new source distribution available at: http://12.232.180.89/andy/yasim-0.1.1.tar.gz Eventually, this will be www.plausible.org again, as soon as I can get Network Solutions to find my account. Things are a little

Re: [Flightgear-devel] YASim config files

2001-12-06 Thread Andy Ross
David Megginson wrote: Since we have the YASim FDM in the FlightGear source tree, it makes sense to add Andy's four config files to the base package. Right now, YASim looks for the config files in $FG_ROOT/Aircraft; that's probably going to be a bit confusing, since the JSBSim models are

Re: [Flightgear-devel] Compiler Compliance and Coding Conventions (was: Another YASim source drop)

2001-12-06 Thread Andy Ross
I'm not quite sure how things got out of hand this time, but they sure did... Norman Vine wrote: Andy Ross wrote: OK, clearly I have to cut out the microsoft stuff. So noted. And it wasn't a windows.h problem, but instead with cygwin. And the no-underscore-followed-by-capital

Re: [Flightgear-devel] buildings or planes?

2001-12-06 Thread Andy Ross
Jeff wrote: So my question is: What is more important to FlightGear buildings or planes? For me? Neither: Aircraft carrier! Adding a tail hook and catapult mechanism would be really, really simple, and a meatball (and VASI/PAPI) renderer wouldn't be too hard. A cockpit AoA indexer would

Re: [Flightgear-devel] buildings or planes?

2001-12-06 Thread Andy Ross
John Check wrote: Andy Ross wrote: For me? Neither: Aircraft carrier! Pretty sure Objects/Geometry/saratoga.obj is a carrier You're kidding, really? OK, I feel dumb. I've never touched the geometry side of fgfs, so any pointers would be appreciated. What can I use to look

Re: [Flightgear-devel] Another YASim source drop

2001-12-07 Thread Andy Ross
Erik Hofman wrote: Err, I must confess I actaully found it! (Man, MipsPro has way too many compiler switches, it was hidden int the -LANG:ansi-for-init-scope=ON flag). Anyway, I won't bug you any more with this :-) Doh! Too late, I already changed it. :( It turns out the MSVC has

Re: [Flightgear-devel] c310 Panel

2001-12-07 Thread Andy Ross
John Wojnaroski wrote: Curt Olson wrote: If both props spin the same way, you only have one engine type to worry about, you only need to keep one spare on hand, etc. It greatly simplifies things. Not to mention the fact that the manufacturer's production run sizes for the engine(s)

Re: Including instrumenst was: Re: [Flightgear-devel] c310 Panel

2001-12-08 Thread Andy Ross
I found the following magazine review, which I used to fix the performance of the YASim model. It's the turbo variant. http://www.planeandpilotmag.com/content/specs/79cessnaturbo.html Also, this site, which is a buyer's guide for the 310 family, has lots of good trivia about equipment

Re: [Flightgear-devel] Starting up flightgear.

2001-12-08 Thread Andy Ross
David Findlay wrote: Curt Olson wrote: So for instance if you want to try Andy's YASim 747 model, and check out his alternate (blade element-ish) approach to modeling the flight dynamics So what exactly does blade element-ish mean? Is this sorta like a realtime digital wind

Re: [Flightgear-devel] Starting up flightgear.

2001-12-08 Thread Andy Ross
Christian Mayer wrote: But one other observation: I couldn't lift of with the YAsim C310 (172 and 747 worked fine). I can accelerate and pull. The front lifts of but i'm not gaining any altitude. Was your engine RPM stuck at 1700? There is a version skew problem with the c310.xml file.

Re: [Flightgear-devel] c310 engine adjustments

2001-12-08 Thread Andy Ross
Just in case someone is wondering, this is a definition that eluded me for a LONG time: what, exactly, is mixture. Mixture is this: the ratio, by volume (!) of the liquid fuel and gasseous air being drawn into the cylinders. That's why it has to be adjusted with altitude -- the liquid densities

Re: [Flightgear-devel] c310 engine adjustments

2001-12-09 Thread Andy Ross
Dave Luff wrote: Sorry Andy, but you're a bit off track here. The mixture is the ratio by *mass* of the air and fuel being drawn into the cylinders. We're talking about different things. The value controlled by the red lever is a volumetric ratio; think about how the carburetor venturi

Re: [Flightgear-devel] Observations

2001-12-09 Thread Andy Ross
Ross Goldner wrote: The CVS commit logs don't provide much info. Can they be made to send the changes made, too, so people can see the actual detail of the change (as a diff -u). No need. Check out cvs diff. :) Or maybe I'm misunderstanding what you want? Andy -- Andrew J. Ross

Re: [Flightgear-devel] Unable to select '--fdm=larcsim'

2001-12-10 Thread Andy Ross
Norman Vine wrote: G.. One of those variables that only lives in the 'ether world' A VERY GOOD REASON for these things to live in a real 'C' variable .. I think you misunderstood. It *does* live in a real C variable (FGInterface::Tank1Fuel). That variable never got

Re: [Flightgear-devel] Unable to select '--fdm=larcsim'

2001-12-10 Thread Andy Ross
Jim Wilson wrote: Andy Ross writes: 3. Reading information that the FDM hasn't set shouldn't cause a crash. Same with reverse?...seems like the problem with JSBsim and using threads has to do with shared memory, one thread reading before or while the other writes. Eeep

Re: [Flightgear-devel] About last cvs changes

2001-12-10 Thread Andy Ross
John Check wrote: Andy Ross wrote: I assume these changes are already in the queue for the base package. but. but. Sorry, my fault. I had a sticky date tag in my base package. No, I can't for the life of me remember why. Of all of CVS's quirks, this is the worst; doing a cvs

Re: [Flightgear-devel] RFC: FGInterface radical surgery

2001-12-11 Thread Andy Ross
John Wojnaroski wrote: Are we sub-optimizing to a point design for convience? Okay some things get better, but it sounds like this will bypass some of the basic ideas behind C++. Which ideas? Encapsulation? No, we got that in properties via the tie mechanism. Composition? Yup, got that

Re: [Flightgear-devel] Rudder trim

2001-12-11 Thread Andy Ross
Jim Wilson wrote: Is there any support for rudder trim...partially done or otherwise? The property is there, but it's not mapped to any input keystrokes or buttons in the default configuration. Add something like this to the keyboard.xml file to map rudder trim to and : (warning, untested,

Re: [Flightgear-devel] 3d cockpit and some ideas

2001-12-13 Thread Andy Ross
Jim Wilson wrote: Mainly I just want to focus on getting a really nice looking panel without getting too hung up in doing everyting at once. Probably I'll add pilars if any would show facing forward and then possibly very plain doors (if it looks too much like you're sitting in a

Re: [Flightgear-devel] 3d cockpit and some ideas

2001-12-13 Thread Andy Ross
Norman Vine wrote: Here is some code to translate the HUD with the eye vector for those that want to play :-) That won't work, though. The translation approximation is good only for small panning angles, which is violated in a big way by the virtual cockpit notion. I want to pan by 180

Re: [Flightgear-devel] Compiler error with Cygwin SimGear 0.0.16

2001-12-14 Thread Andy Ross
Erik Hofman wrote: Do you have any idea if the mmap() function is available on all platforms? This is basically like a one shot read of the airports file into memory (but instead leaving it on the drive). It would be easy to search the memory location then. Bad idea. This means that the

[Flightgear-devel] SimGear include path (was: YASim)

2001-12-16 Thread Andy Ross
Is that correct? In my SimGear installation tree, easyxml.h is under /simgear, there is no /simgear/xml directory. In the SimGear *source* tree, that's where the file is. But you're not supposed to be building against the source tree. I suspect you have a bug in your project configuration.

Re: [Flightgear-devel] SimGear include path (was: YASim)

2001-12-16 Thread Andy Ross
David Megginson wrote: Andy is the first easyxml user outside the property manager, so this is the first time the problem has come up. Andy: would you object if I made the fix in YASim in the FlightGear CVS tree after fixing the problem in SimGear? Not at all, we should clearly have

Re: [Flightgear-devel] SimGear include path (was: YASim)

2001-12-16 Thread Andy Ross
David Megginson wrote: Andy Ross writes: The reason this bites only YASim, I suspect, is that I'm the only non-SimGear code that actually uses this file. Everything else uses the PropertyTree wrapper parser instead. I didn't know about this at the time, so I just used the raw SAX

Re: [flightgear-devel] New SimGear Class definition

2001-12-18 Thread Andy Ross
Erik Hofman wrote: Please correct me if I'm wrong, but to my understanding namespaces are like classes but without the overloading and such? Namespaces are just namespaces. :) Some languages call them packages or modules, but the idea is really simple: a symbol (function, class, global

[Flightgear-devel] Runway slopes [was: More on YASim Gear Code]

2002-01-14 Thread Andy Ross
[bouncing this to flightgear-devel from flightgear-flightmodel] David Megginson wrote: Curtis L. Olson writes: [about sloping runways] Depending on how much we trust the underlying DEM data, they may or may not be deliberate ... We shouldn't trust our DEM data at all even at

Re: [Flightgear-devel] altitude hold problem

2002-01-16 Thread Andy Ross
Jon S. Berndt wrote: Alex wrote: For starters, can the JSB filters (etc) stuff be used without JSBSim? The base class of all JSBSim classes - including the FCS classes - is FGJSBBase. So, technically, no. This would be a good feature to look at breaking out of the FDM. At its most

Re: [Flightgear-devel] msvc6 - 0.7.9 release

2002-01-16 Thread Andy Ross
Geoff McLane wrote: Jon, while I too can not yet 'point the finger' at JSBSim specifically, I have now had a chance to try my compiled exe using YASim, and it all went well ... I had a 'reasonable' flight, 'stuttering' along, but some moments when it came together ... That sounds like a

Re: [Flightgear-devel] altitude hold problem

2002-01-16 Thread Andy Ross
Tony Peden wrote: Andy Ross wrote: This would be a good feature to look at breaking out of the FDM. At its most reductionist, a FCS system compares (1) pilot control inputs and (2) FDM output to produce control surface positions. None of that requires access to the internals

Re: [Flightgear-devel] Breaking OpenGL's hold to ease debugging

2002-01-17 Thread Andy Ross
Julian Foad wrote: In my experience, debugging FG (single-stepping, run-to-here, etc.) is almost impossible under GDB and I believe the OpenGL I'm in charge of the main loop philosophy is the main cause. I've successfully and productively run fgfs under gdb just fine. I'm not sure there's

Re: [Flightgear-devel] Re: Re: BUG: option --tile-radius missing

2002-01-21 Thread Andy Ross
Curtis L. Olson wrote: Melchior FRANZ writes: Shouldn't the far_clipping plane be tied to visibility? This slows down rendering and uses more memory, OTOH it doesn't make sense to allow far-reaching visibility but to show white tiles on the horizon. Perhaps it could be tied, but

Re: [Flightgear-devel] msvc6-win32-0.7.9 (minus)

2002-01-24 Thread Andy Ross
Geoff McLane wrote: JSBSim stops after the QNAN's, and now YASim c172 seems unable to get speed to lift off ... Just one of those days ... Odd. Jim Wilson also reported a not enough power situation (with the YASim 747) that I couldn't reproduce. I didn't think to ask about platform.

Re: [Flightgear-devel] JSBSim and MSVC

2002-01-24 Thread Andy Ross
Christian Mayer wrote: Off course. As I wrote in my mail it's no problem to add additional include/library directories. But I don't see a reason to add K:\Projekte\SimGear\simgear\zlib or ..\SimGear\simgear\zlib to the include directory. The include directory should have only intuitive

Re: [Flightgear-devel] Re: YASIM Options

2002-01-28 Thread Andy Ross
Melchior FRANZ wrote: Andy Ross wrote: There's also a complication with the Harrier. You'll need to map a joystick axis to the /controls/thrust-vector[0] property in order to work the thrust vectoring. Works also reasonably well when mapped to the low/high properties

Re: [Flightgear-devel] CVS trouble

2002-01-28 Thread Andy Ross
Boslough, Mark B wrote: I am again trying to compile the CVS version of FlightGear. I *think* I am following instructions! I have not had any trouble building the version 0.7.8, but with CVS I get the following compile error: Not to be too snooty, but sometimes it's helpful to actually

Re: [Flightgear-devel] YASIM Options

2002-01-29 Thread Andy Ross
John Wojnaroski wrote: both 747 and f15 seem to be underpowered. or possibly too much drag? Can't hold a vertical climb in the f15 and can only get to mid altitudes in the teens with 747 This is the second time this has been reported, but I can't reproduce it. Your note later on,

Re: [Flightgear-devel] YASIM Options

2002-01-29 Thread Andy Ross
John Wojnaroski wrote: New question. controls for teh gear and flaps? will the existinig bindings for the keyboard work? Are the gear and flap values now properties? The gear is controlled by /controls/gear-down, a boolean. The flaps are in /controls/flaps, a floating point number from

Re: [Flightgear-devel] YASIM Options

2002-01-30 Thread Andy Ross
John Wojnaroski wrote: Also, does the gear still exhibit extention/retraction delays. Is there a fgGetDouble(/controls/gear[n]-position') or something like that which returns a value from 0 to 1? Aerodynamically, yes. The gear is interpolated from all to none over the retract-time

Re: [Flightgear-devel] BUG: Reset forgets time offset

2002-02-06 Thread Andy Ross
Cameron Moore wrote: When starting fgfs with a time offset (like '--time-offset=-12:00:00'), resetting fgfs doesn't maintain the specified offset. For example, I use this a lot since I usually mess with fgfs at night but don't want it to be night in fgfs. I can set the offset and

Re: [Flightgear-devel] GeForce4 announced at nVidia

2002-02-06 Thread Andy Ross
Jon S. Berndt wrote: Christian Mayer wrote: Get a card with TL setup (i.e. a GeForce or a Radeon). FlightGear profits heaps from the TL setup. How? Presumably because most (all? I didn't check) of the geometry is stored in display lists. These can be stored on-card and eliminate the

Re: [Flightgear-devel] Observations on latest cvs flightgear

2002-02-07 Thread Andy Ross
Curtis L. Olson wrote: D Luff wrote: YASim initialised at about 40 knots charging down the runway, with the engines running and the magnetos off. Due to the aformentioned full left aileron I didn't get very far. Yes, YASim engine start procedures need to be on the todo list

Re: [Flightgear-devel] OT: Easy on the rudder there, Cowboy

2002-02-08 Thread Andy Ross
Cameron Moore wrote: Safety board says pilots can cause tail fin to break off http://www.cnn.com/2002/US/02/08/ntsb.flight587/index.html IANAPNAE, but this sounds like they're blaming the pilot for a weak tail fin. Thought it was interesting... There's politics at work here

Re: [Flightgear-devel] 747-yasim panel

2002-02-09 Thread Andy Ross
Curtis L. Olson wrote: The 747-yasim-set.xml file references a non-existant panel. Is there something better we can use in the mean time? Or just not specify a panel until we have one we can use? I've been wondering about that myself. :) I figured it was checked in this way because

Re: [Flightgear-devel] Re: Back to Linux

2002-02-10 Thread Andy Ross
John Wojnaroski wrote: Melchior FRANZ wrote: That's the metakit. You find it in in the SimGear directory. Just have to compile and install it. Right! I thought I caught that when building SimGear and it complained about finding the metakit. followed the readme steps. The library

Re: [Flightgear-devel] YASim DC3 startup problems

2002-02-12 Thread Andy Ross
Jim Wilson wrote: Are you talking about the newer 3D model or newer xml? I'm not sure exactly what affects the position of the model, but using Yasim-DC3 any model including the glider is sideways. Now, that's interesting. I'd just assumed this was a modelling issue, but you're saying

Re: [Flightgear-devel] Crash when KMYF not KSFO

2002-02-14 Thread Andy Ross
Curtis L. Olson wrote: Ok, looking further, it appears that nothing, no place, no where is setting the runway elevation any more ... it get's initialized at startup, but then never is updated as the aircraft moves. Ah, which explains why I've never seen this. I only ever bother testing in

Re: [Flightgear-devel] Crash when KMYF not KSFO

2002-02-15 Thread Andy Ross
Curtis L. Olson wrote: JSBSim properly handles updating the runway/ground elevation most of the time, but here is at least one situation where it doesn't. YASim doesn't handle this at all (but Andy's the new kid so we can cut him some slack.) :-) Uh, stupid question: where do I stick

Re: [Flightgear-devel] JSBsim C310 crashes the sim on gear retrac tion.

2002-02-15 Thread Andy Ross
David Megginson wrote: Curtis L. Olson writes: What code determines whether the gear is retracted or extended or in some intermediate state? That's FDM-specific. In FGControls, we keep the position of the gear selector (up or down), but not the actual gear position (likewise for

Re: [Flightgear-devel] Crash when KMYF not KSFO

2002-02-15 Thread Andy Ross
Curtis L. Olson wrote: Andy Ross wrote: Uh, stupid question: where do I stick the number? I can't imagine this is difficult to fix. Should be a breeze. Essentially you are assuming that the runway elevation field in the FGInterface structure is getting updated externally

Re: [Flightgear-devel] Aileron trim aid.

2002-02-15 Thread Andy Ross
Martin van Beilen wrote: Unfortunately the script won't work very well with JSBSim. JSBSim's aileron trim is so insensitive that it can't even compensate for one notch of rudder. (IANAP, so I don't know how realistic that is.) YASim's aileron trim seems to behave like a secondary aileron

Re: [Flightgear-devel] Aileron trim aid.

2002-02-17 Thread Andy Ross
Martin van Beilen wrote: Andy Ross wrote: But... sh and awk? Goodness gracious, learn some perl, man! :) I'm fluent in Perl, thank you very much. However: ls -l /usr/bin/{awk,nc,perl} - -rwxr-xr-x 2 root root88236 Jun 19 1999 /usr/bin/awk* - -rwxr-xr-x 1 root

Re: [Flightgear-devel] Wind confusion.

2002-02-17 Thread Andy Ross
Martin van Beilen wrote: I think I am beginning to understand what the source of the confusion is. As most of you know, weather reports specify the winds as a _from_ heading. However, in simulated space I tend to think of wind as a vector, i.e. a _to_ heading. Apparently, two out of three

Re: [Flightgear-devel] Problem with panel code

2002-02-20 Thread Andy Ross
David Megginson wrote: Jim Wilson writes: And the question that brings to mind is, how will we be able to set the z axis in a way that it can handle the panel? In other words, the scale is so large now that it'll disappear just like airplane model components do when viewed too

[Flightgear-devel] Sorted property picker list

2002-02-20 Thread Andy Ross
[This didn't seem to come through the first time. Apologies if you see it twice.] Here's a fun toy. I've been using the property picker a lot recently, while working on a panel for the Harrier. Sometimes it gets difficult to find the property you're looking for in a crowded tree. The

Re: [Flightgear-devel] plane banks to left side

2002-02-21 Thread Andy Ross
Martin Spott wrote: I had some tests with 0.7.9 source and today's CVS (_very_ nice panel), with 0.7.9 base package and today's CVS, I tried different airports but the 'feature' is still there: Several models tend to bank to the left when the stick is in the middle: c172-larcsim does

[Flightgear-devel] YASim skid ball [was: plane banks to left side]

2002-02-22 Thread Andy Ross
Martin Dressler wrote: Please start with some yasim aircraft and apply parking break. Look at skid ball. I thought that it should be in the middle of tube, when sitting on runway. but it isn't. Hrm... that one's weird. I'm on it, no ideas yet. Andy -- Andrew J. Ross

Re: [Flightgear-devel] YASim skid ball [was: plane banks to left side]

2002-02-22 Thread Andy Ross
Tony Peden wrote: Andy Ross wrote: Martin Dressler wrote: Please start with some yasim aircraft and apply parking break. Look at skid ball. I thought that it should be in the middle of tube, when sitting on runway. but it isn't. Hrm... that one's weird. I'm on it, no ideas

Re: [Flightgear-devel] Problem report on release 0.7.9

2002-02-22 Thread Andy Ross
Tony Peden writes: Just for the record, what's most likely happening here is that since JSBSim senses that the gear are underground on the first update(), the gear code calculate a reaction force based on how far underground they are. One thing you might try is clamping the gear force to

Re: [Flightgear-devel] FG/Opengc Interface

2002-02-23 Thread Andy Ross
John Wojnaroski wrote: On the 747 YASim model, have not been able to slow to a resonable approach speed 150kts and maintain altitude, run out of elevator authority around 184 kts and flap settings seem to have no effect. The numbers I have in my 747 flight manual don't match up with what

Re: [Flightgear-devel] FG/Opengc Interface

2002-02-24 Thread Andy Ross
Jim Wilson wrote: IIRC the 747-400 comes down pretty fast anyway. I think you're looking at 195 KIAS range for final dropping down to 175 KIAS (with full flaps) at the outer marker. But note again, this is from memory. Still, there is no way that pig flies at 150. The biggest

Re: [Flightgear-devel] FG/Opengc Interface

2002-02-25 Thread Andy Ross
Jim Wilson wrote: Yes agreed. And probably with a 747-400 it is only those longer flights like London-Vancouver that get filled to the brim with fuel. Andy, is the aircraft otherwise considered filled to capacity (passenger/cargo) in the fdm? Um... I'm not sure. :) The configured

Re: [Flightgear-devel] New subsystem: FGEnvironment

2002-02-25 Thread Andy Ross
Martin van Beilen wrote: Actually it is fairly easy to make the property manager Thread Safetm. All regular r/w locking can happen on a per-node basis, and can be encapsulated transparently. The property manager seems like an ideal candidate for IPC messaging, so if we want, it can be

Re: [Flightgear-devel] New subsystem: FGEnvironment

2002-02-25 Thread Andy Ross
Martin van Beilen wrote: Andy Ross wrote: For those with Java experience, consider the Vector class. It's threadsafe, right? No, it's not. Imagine what happens when one thread is reading it while another thread is writing to it. :-) Right. Now enumerate over it in one thread

Re: [Flightgear-devel] Animated C172

2002-02-26 Thread Andy Ross
Alex Perry wrote: David Megginson wrote: I've been wondering for a while - suppose I take a non-force feedback yoke, and attach a wheel that actually moved the neutral position by moving the end points of both springs backwards or forwards, and use this instead of the software trim,

Re: [Flightgear-devel] Animated C172

2002-02-26 Thread Andy Ross
David Megginson wrote: ... if I hold the yoke in *exactly* the same position and move the trim wheel, the elevator surface will not move; only the amount of force required to hold the yoke in position will change. Is that right? Yes. On any aircraft that is not fly-by-wire*, the

Re: [Flightgear-devel] Animated C172

2002-02-26 Thread Andy Ross
Tony Peden wrote: OK, JSBSim now reports control surface positions. I set up the following properties: /surface-positions/elevator-pos-deg /surface-positions/left-aileron-pos-deg /surface-positions/right-aileron-pos-deg /surface-positions/rudder-pos-deg

Re: [Flightgear-devel] Model Performance and dc3 donuts

2002-02-26 Thread Andy Ross
Jim Wilson wrote: Also noticed the rudder control seems to be broken on the dc3 at the moment. Blame David. :) The DC-3 is a taildragger, and therefore doesn't have a steerable wheel to turn with. Instead, real aircraft use differential braking to do this. The problem is, typical control

Re: [Flightgear-devel] Profiling run

2002-02-26 Thread Andy Ross
Wow, good stuff. Skimming through to apply my own intuition: 6.99% ssgEntity::cull_test 5.28% ssgBranch::cull 4.85% ssgVtxTable::draw_geometry 3.42% FGHitList::IntersectLeaf 3.28% FGHitList::IntersectBranch 2.85% ssgVtxTable::getNumVertices 2.71% sgFrustum::contains 1.85% sgdPointInTriangle

[Flightgear-devel] Virtual Cockpit!

2002-02-26 Thread Andy Ross
I spent most of today working on a virtual cockpit interface for the panel, and I'll be damned, it works! What the attached patch does is map your panel definition onto a (non z-buffered) quad in front of your face. You can twist the view around and see it move in the appropriate ways. Apply

[Flightgear-devel] Product Reviews [was: Model Performance and dc3 donuts]

2002-02-27 Thread Andy Ross
David Megginson wrote: John Check writes: Hey David, I was thinking of getting another controller, what was that one you recommended? I use a Logitech WingMan RumblePad. It is USB-based and has two thumb-controlled joysticks, a throttle, two triggers, a view hat, and seven or

Re: [Flightgear-devel] patches?

2002-02-27 Thread Andy Ross
Curtis L. Olson wrote: Martin Dressler writes: I'm now working on Ground view mode and I just go through code to fully understand the problem. I find some small nearly cosmetic bugs. What is the best way to rapair them. Should I make diff of affected code or should I tar the whole

Re: [Flightgear-devel] patches?

2002-02-27 Thread Andy Ross
Tony Peden wrote: Andy Ross wrote: + They're more human readable. Inevitably, you're going to be doing a diff between revisions to see what's changed anyway. This just give it to you up front. If you want to look at more surrounding code, you certainly can, but everyone

Re: [Flightgear-devel] patches?

2002-02-27 Thread Andy Ross
Curtis L. Olson wrote: It does do a pretty darn good job all things considered, but it's not magic and it can't figure the 'right' thing to do given a conflicting situation. And the number of times conflicting situations arise is more than most patch apologists would probably admit. :-)

Re: [Flightgear-devel] DC-3 model now animated

2002-02-27 Thread Andy Ross
David Megginson wrote: Changes for gear and flaps are still abrupt, but I have great faith that I'll be able to get the normalized gear and flap positions from YASim very, very soon now. Actually, now that the subject's been brought up, I realize that YASim doesn't time-interpolate the

Re: [Flightgear-devel] Product Reviews [was: Model Performance and dc3 donuts]

2002-02-27 Thread Andy Ross
John Check wrote: Andy Ross wrote: One rocker axis on the throttle to simulate rudder (not very well -- I still use my analog TM pedals for that). Rudder control is really what I'm interested in. I tried binding the throttle wheel of my gravis Blackhawk, but the pot is super cheesy

Re: [Flightgear-devel] JSBSim changes

2002-02-28 Thread Andy Ross
Tony Peden wrote: David Megginson wrote: Tony Peden wrote: I certainly like the idea of having some sort of units indicator on every property name, though I agree risk of breakage is high in this case. I can change everything in FlightGear and the base package, but I'm

Re: [Flightgear-devel] JSBSim changes

2002-02-28 Thread Andy Ross
David Megginson wrote: Andy Ross writes: I agree in general. I'd suggest the use of -fraction or somesuch instead of -pct if the range is 0:1, as it is for most of these properties currently. An earlier suggestion was -n for normalized, which is probably the most accurate

Re: [Flightgear-devel] JSBSim changes

2002-02-28 Thread Andy Ross
Jim Wilson wrote: But if those settings don't represent a form of units--just arbitrary values, why do they need a suffix? The suffixes were intended to reflect units and make sense only when they mean something, like knowing if the value is in feet or meters, degrees or radians, knots

Re: [Flightgear-devel] JSBSim changes

2002-02-28 Thread Andy Ross
Erik Hofman wrote: Jon S. Berndt wrote: Erik Hofman wrote: Christian Mayer wrote: Jon S Berndt wrote: In my mind, mass is in kg. and force is in Newtons. That's correct. Are you sure [...]? See? My bad Oh, dear. Time for the whirlwind tour of unit conventions.

[Flightgear-devel] YASim changes / new XML files

2002-02-28 Thread Andy Ross
I just checked in YASim changes that allow for more cleaner export of control output to the property tree (and flaps now extend slowly now, to boot). But this breaks the XML syntax in an incompatible way, so you'll need to update your planes in order to run the code in CVS. Get the new planes

Re: [Flightgear-devel] JSBSim changes

2002-03-01 Thread Andy Ross
David Megginson wtore: Alex Perry writes: How about tackng -1 on the end ? That's nice, but since Tony and Andy have agreed on -norm, we may as well leave the whole discussion closed. Oooh, actually I really like -1. Shorter and really obvious. Alas that it's too late. I weep for

Re: [Flightgear-devel] YASim changes / new XML files

2002-03-01 Thread Andy Ross
John Check wrote: Andy Ross wrote: I did try these out against David's (freakishly cool) model animations, though, and they seem to work really well modulo a few direction/orientation conventions. The DC-3 gear do indeed pull up slowly. I'm not seeing the slow gear transition

Re: [Flightgear-devel] Surface Positions (almost there)

2002-03-01 Thread Andy Ross
Erik Hofman wrote: David Megginson wrote: Erik Hofman wrote: If I see it right, you could do that in the animation files also by having different factor falues, doesn't it? Probably, but then the sound wouldn't sync up. I could change the pitch a bit (changing factor also).

Re: [Flightgear-devel] YASim changes / new XML files

2002-03-01 Thread Andy Ross
Davig Megginson wrote: Andy Ross writes: Also, I think the right aileron deflection is reversed in the model file. Right, because it was originally reading a single value from /controls/aileron. Oh, yeah. Duh. Sorry. :) Andy -- Andrew J. RossNextBus Information

Re: [Flightgear-devel] Cessna 310 Model

2002-03-03 Thread Andy Ross
David Megginson wrote: For some reason, the animations are not working with the YASim Cessna 310 model (despite the fact that the same kinds of animations work fine with the YASim DC-3). I cannot find anything obvious in the config file, but perhaps Andy could take a glance. It's not

Re: [Flightgear-devel] Virtual Cockpit!

2002-03-03 Thread Andy Ross
David Findlay wrote: Andy Ross wrote: I spent most of today working on a virtual cockpit interface for the panel, and I'll be damned, it works! Umm, one problem. When you look down, the panel follows the bottom of the screen. Other than that it's great. We just need the interiors

Re: [Flightgear-devel] Plane above the runway

2002-03-03 Thread Andy Ross
Curtis L. Olson wrote: David Megginson writes: David Findlay writes: It appears that the plane is above the runway at least with the c172. It's very hard to get it exactly right. Another thing that might be helpful is if the FDM's would report the amount of each gear

Re: [Flightgear-devel] Cessna 310 Model

2002-03-03 Thread Andy Ross
John Wojnaroski wrote: I added the tags to the 747 file, but it appears the code is not exporting a value for the nose gear or the flap settings. Can you post what you changed? I'm not sure from the above exactly which tags went where. Certainly, if you put the right tags in the right

Re: [Flightgear-devel] Plane above the runway

2002-03-04 Thread Andy Ross
Curtis L. Olson wrote: Andy Ross writes: No problems there. YASim now reports this number in /gear/gears[n]/compression-norm (should be an OK choice, according to our rapidly evolving property conventions). The remaining problems are only bookkeeping. We need to make exactly

Re: [Flightgear-devel] Cessna 310 Model

2002-03-04 Thread Andy Ross
John Wojnaroski wrote: For both YASim and JSBSim the flaps seem inop. Gear, flight surfaces, engines are okay. Except it looks like the YASim 747 needs a nose gear Key board ] and [ activate audio flap sound and panel movement of flap switch, just nothing from properties Here is

Re: [Flightgear-devel] Cessna 310 Model

2002-03-04 Thread Andy Ross
John Wojnaroski wrote: How complete is the 747 wing model for slats, spoilers? Note they are in the XML file; is it just a question of specifying the control axis input. Indeed. I have the /controls/spoilers property bound to the same joystick axis I use for mixture (or maybe propeller

Re: [Flightgear-devel] Re: [Flightgear-cvslogs] CVS: FlightGear/src/Main main.cxx,1.245,1.246

2002-03-05 Thread Andy Ross
Curtis L. Olson wrote: I'm really nervous about forcing this down to 0.1 for all cases. This will mess things up for people with voodoo cards. Can we change this back? Perhaps we need to do a separate pass for rendering the 3d model and change the near clip plane just for that

Re: [Flightgear-devel] Re: [Flightgear-cvslogs] CVS: FlightGear/src/Main main.cxx,1.245,1.246

2002-03-05 Thread Andy Ross
Jim Wilson wrote: Ummm...why not clear the z-buffer and use a seperate scene graph? Note that there are *lots* of people using pre-geforce generation hardware. Probably more than not. Actually, it's those folks who are at risk. Clearing the whole z buffer soaks up big chunks of

[Flightgear-devel] Virtual cockpit update

2002-03-05 Thread Andy Ross
Here's another batch of virtual cockpit stuff. There is a patch attached, and the two modified files in full can be found at: http://www.plausible.org/andy/vc-20020305.tar.gz Folks who want to try the patch (it's easy, really!) can just get into their just-updated FlightGear source

Re: [Flightgear-devel] CC compiler problem?

2002-03-06 Thread Andy Ross
Erik Hofman wrote: I have a propblem with a peace of CC code which is pretty standard for common C. When I define a structure and point an array to a pre-defined array; [...] this works for C but not for CC? Am I doing something wrong here, or doesn't CC allow this type of

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