reported and b) I have time -- I think Tony already has JSBSim
reporting gear and flap position.
I'll fix up the elevator today.
Thanks,
David
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Martin Spott writes:
Fortunately this is really simple. But it does not recognize the
position
altitude-ft1500/altitude-ft
/position
JSBSim has an on-ground trimming routine. Try also setting the
velocity to non-zero.
All the best,
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people. We cannot do real trimming without
force-feedback controllers (that can hold a non-neutral position).
All the best,
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finished, or else I might
not have food or a house, much less a computer to use for contributing
new code. We're all in the same position.
All the best,
David
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Rainer Emrich writes:
Compilation stops with: JSBSim.cpp file not found.
I had the same problem. You have to remove src/FDM/JSBSim/.deps then
recompile (yes, it took me an hour to figure that out).
All the best,
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,
David
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in case there's a plane somewhere that uses both.
All the best,
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.
All the best,
David
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the
rotation centers and axes right. People can use
$FG_ROOT/Aircraft/c172/Models/c172-dpm.xml
as a model for writing a wrapper.
All the best,
David
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,
David
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--
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,
David
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it into two, hinged objects. With the
properties coming from the FDMs, I'll be able to animate gear and
flaps much more smoothly.
The fixed gear planes make gear retraction noise
Yeah, that's because the state changes right at the start when the sim
starts.
All the best,
David
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on the
flightgear.org site.
All the best,
David
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-- I'm doing a profiling
build now to help me hunt down the problem. So far, we're making far
fewer than 500 property lookups per frame, so there is no noticable
drop, and you may be just as well off using fg(Get|Set)* directly for
now.
All the best,
David
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them, but it's not a lot of extra trouble (except for
Tony, if he has to change his last checkin).
All the best,
David
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yet.
All the best,
David
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it to 1.0, and bind the
release event to set it to 0.0. That way, the brakes come on a little
more gradually, and you can pump the button to avoid full brakes.
If you have some spare joystick axes, they'd work great for the brakes.
All the best,
David
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and
generating textures is going to be expensive at startup.
I ran it for only 30 seconds. I'll do another run for 5 minutes, with
an actual flight, and report the results.
All the best,
David
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committed the changes to
CVS, and with luck, they'll fix Jim Wilson's problem as well.
All the best,
David
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I've committed Andy's patch for sorting the properties in the property
browser.
All the best,
David
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Tony Peden writes:
Is there a way to dump the entire tree to xml (whether or not the
archivable bit is set)?
Not currently, but I can modified writeProperties to take an extra,
optional argument, then make a dump-properties command.
All the best,
David
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patch with the new ground-view mode.
Thanks, and all the best,
David
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Tony Peden writes:
It seems very strange to me, however, that FGInterface::operator=
would show up at all. According to that output, it was called
almost 200,000 times. What's up with that?
Do we keep two copies and swap between them?
All the best,
David
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on punch cards too? ;-)
Those are for wimps. You should be entering machine instructions
directly using toggles.
All the best,
David
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the best,
David
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- relative wind
(for each gear)
- weight on wheel
- normalized retraction position
- vertical velocity
(for each engine)
- RPM
- manifold pressure
What is the most intuitive way to organize all of this?
All the best,
David
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windmilling. YASim used to
keep it spinning forever, but Andy's latest changes should allow it to
stop. What FDM are you using?
All the best,
David
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.
All the best,
David
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, especially for
joysticks.
All the best,
David
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using
today, not what we plan to use. Cowl flaps are important on the DC-3,
for example, not only for cooling but for drag.
All the best,
David
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but
cut the cooling as well. Usually they're open for take off and
landing and closed for cruise (since there's lots of air anyway).
Some DC-3 pilots actually calculate the extra drag into their
approaches.
All the best,
David
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). Is there any
standard unit abbreviation that conflicts with that and is useful for
flight simulation?
All the best,
David
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that it would be possible to generate airports dynamically at
runtime by cutting a hole in the mesh, but it would be a lot of work
and no one's volunteering yet. It's something we'll want to get to
eventually.
All the best,
David
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, knots or fps.
I'm still undecided myself, but the argument in favour is that the
suffix does show a kind of unit (a normalized value). Otherwise, the
throttle setting could be in inches, the ailerons in degrees, etc.
All the best,
David
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Jon Stockill writes:
Now, feet, inches, miles, furlongs, etc are another matter :-)
Why don't we give this thread a rest, then resume it in a fortnight?
I have half a stone of paperwork to get through first.
All the best,
David
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Jon S Berndt writes:
Metric isn't perfect either - it's been sort of perverted
by ... I don't know who.
Napoleon.
All the best,
David
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, ending at the wingtip fuel tanks; the flaps might be
beside them, ending at the nacelles, they might be tucked in between
the nacelles and the body, or there might even be leading-edge flaps.
Help.
All the best,
David
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as
I can see.
Thanks,
David
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flaps from the top as well?
All the best,
David
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nice, but since Tony and Andy have agreed on -norm, we may as
well leave the whole discussion closed.
All the best,
David
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conventions. The DC-3 gear do indeed pull up slowly.
What are the direction/orientation conventions that cause trouble?
This is a good time to fix things, before there are a lot of animation
files out there.
All the best,
David
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,
David
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loop the sound instead, playing it as long as the gear position
is changing and stoping it (with a clank sound?) when the movement
stops.
Would it help for the FDM to supply a moving flag in the property
tree?
I don't think that should be necessary.
All the best,
David
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John Wojnaroski writes:
Any ETA when new properties for gear/surfaces will make it into CVS?
Everything's there.
All the best,
David
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John Wojnaroski writes:
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
Do you have the latest CVS code for both FlightGear and the base
package?
All the best,
David
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to respond.
I agree. I have brought this up once or twice, but given the more
serious gear problems, I've never pushed it. Do you find YASim's
nose-gear handling more reasonable?
All the best,
David
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it should be possible, but no one has done that yet. Right ?
Yes, it is possible. I did some gear for the Twin Otter, but it
either never made it into the base package or got overwritten.
All the best,
David
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and acceleration.
Yes, I can reproduce this as well. Of course, you shouldn't push the
stick all the way forward like that during normal flight, but the
program still shouldn't crash I wonder if this still happens with the
engine turned off.
All the best,
David
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, but should
also take common practice into accounts (i.e. key bindings that people
are used to from other sims).
All the best,
David
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I've added the patches.
All the best,
David
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? It shouldn't be too much work
to fix up the 3D model.
Thanks,
David
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at least
slightly. That means that when you look from the right, the wheels
might appear to be floating 6 in above the ground, while from the
left, the wheels might appear to be sunk 6 in underground.
All the best,
David
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.
If he's not using the latest CVS, the default model he's referring to
might be the yellow and blue glider.
All the best,
David
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the best,
David
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Curtis L. Olson writes:
Is anyone still using this ancient file format? Does anyone have any
objections to ending support in flightgear for it?
I think that PPE has support for the old ASCII format but not the new
binary one. Other than that, chuck it.
All the best,
David
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no good to make
public noise about how important Linux is to their operations (they
still need goodwill from the commercial vendors), but trust me, it's
mission critical to at least one I've been involved with, and it's not
Microsoft who's losing the sales.
All the best,
David
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. I'll get a new one put together soon, if you
don't want to do it yourself.
I did it today.
All the best,
David
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. That wouldn't be hard to do from JSBSim (which
actually knows the pitch angle), but it might be trickier from YASim.
I'm worried about how far this will all lead, though.
All the best,
David
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value.
All the best,
David
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, look towards the plane,
reverse view direction [for external], etc.).
All the best,
David
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with the change, before I put
it back?
All the best,
David
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,
David
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the near clip plane to get 3D interior
views working. I'm fixing it now (the problem doesn't show up on
newer hardware, like the GeForce2).
All the best,
David
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,
David
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Altitude = -2.09 -1.85 forcing to 1.15
FGLaRCsim::set_Altitude: 1.14519
Any Ideas?
It probably has something to do with the UIUC gear code.
All the best,
David
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on flight modelling; contributions to other areas from other
people aren't taking away from that.
All the best,
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its
reference point, orientation, offsets, etc. are, it doesn't need to
know whether we're modelling a control tower, chase view, etc.
Eventually we might even control some of the views through external
scripting.
All the best,
David
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think we should aim a lot higher than fixed
2D renditions. Try the Battle of Britain demo to see what a 3D
cockpit is like, and you won't want to go back.
All the best,
David
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position and the world-up vector.
All the best,
David
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, you're supposed to try to get visual confirmation of which prop
is spinning more slowly.
All the best,
David
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David Megginson writes:
3. The orientation is incorrect when the view is not straight forward
and the plane is not flying level (waiting for a fix from me, but I
don't understand matrix math well enough) -- that means that when you
look out the side window during a climb or turn
might represent in LISP as
('person ('name David Megginson) ('citizenship Canadian))
you can represent in XML as
person
nameDavid Megginson/name
citizenshipCanadian/citizenship
/person
An element name must begin with an alpha or '_', and may contain only
alphabetic characters
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the property browser inside FlightGear).
Then all you need is a simple schema format (which can also be
property-list-based) to say what is and isn't allowed in each format,
and the UI will be dynamically reconfigurable.
All the best,
David
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is rearranged,
but other european layouts move the letters around as well.
What we need to do is have FlightGear read a local config file in a
user directory after reading the defaults from $FG_ROOT.
All the best,
David
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Cameron Moore writes:
[ Why doesn't Tarzan have a beard? ]
Jane, n'est-ce pas?
All the best,
David
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, and all of the
FlightGear-related stuff in the view manager class. That way, person
A who knows nothing about matrix math can design new views, etc., and
person B who knows little about the rest of FlightGear, properties,
etc. can optimize the matrix math, etc.
All the best,
David
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-- a file with the same name as a 3D model and the XML
extension is a wrapper file for the 3D model containing animation and
placement information.
All the best,
David
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,-0.936000
17965,-0.00,-0.534000
19013,-0.00,-0.294000
20044,-0.00,0.27
21090,-0.00,-1.00
22097,-0.00,-0.168000
All the best,
David
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the best,
David
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stuff like
forces and moments.
All the best,
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saying this for a couple months now...but hey I'm slow :-)).
Thanks -- the internal cockpit view seems much better. Now the ball's
in Andy's court to patch up the virtual panel code (and de-quat the
mouse code), and we're flying!
All the best,
David
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Norman Vine writes:
David Megginson writes:
(and de-quat the mouse code)
exactly the kind of response that led me to coin the phrase
MAYDAY MAYDAY FlightGear has been hijacked
Actually, that was Andy's idea, but I do agree with it entirely.
I'm not saying to de-quat
it
as FlightGear becomes more sophisticated. We all owe Norm an enormous
debt of gratitude for getting all this stuff working in the program's
early days, or there would have been no program for us to work on now.
All the best,
David
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. This will matter if the C++
code ever runs slower than the framerate (i.e. if 200fps video cards
become common).
Comments?
All the best,
David
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,
David
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so that we know what
we actually have to support.
I'll look forward to seeing the patch.
All the best,
David
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John Check writes:
It doesn't have everything you need but incase you haven't seen it:
http:www.douglasdc3.com
Yes, it's an excellent source for photos and low-res technical drawings.
All the best,
David
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to calculate the scenery center for each tile can
simply go away.
That sounds like an excellent idea. Are there any hidden gotchas?
All the best,
David
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() const;
// Matrices
virtual const sgVec4 * get_VIEW () const;
virtual const sgVec4 * get_VIEW_ROT () const;
virtual const sgVec4 * get_UP () const;
private:
// whatever we decide to put here
};
All the best,
David
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the position offsets may live elsewhere, of
course, but it makes sense to let the viewer calculate the actual
transformation from the reference geodetic position, since it will
already have rotation and transformation matrices set up.
All the best,
David
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Andy Ross writes:
This looks really good to me.
Thanks.
A few nits below, based on the way I think about the problem.
David Megginson wrote:
1. looking from a known position outwards
2. looking at a known position from an offset
3. looking at one known position from
,
David
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Jim Wilson writes:
Nice seats too :-)
I'm probably not going to be able to get away with such low poly
counts for the interior for long, but I don't want to fork the models
quite yet.
All the best,
David
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David Megginson
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to model interior as well as exterior views
of 3-D models. There's not much, yet, but you might want to keep that
in mind. The most important thing, under all circumstances, is to
keep the polygon count low.
All the best,
David
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David Megginson
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David Megginson writes:
Danie Heath writes:
Just a question. If I create a 3-d model in GMAX, convert it into a .MDL
file for FS2K2, is there a way to get it (as well as detail things like
rotating wheels, moving control surfaces) into Flightgear ?
Yes.
Or no, according
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