Ive posted a new version of the JSBSim reference manual with much more
included on input/output and scripting. You might be interested in the part
on the stripchart application I described below.
Jon
From: Jon S. Berndt [mailto:jonsber...@comcast.net]
Sent: Saturday, August 15, 2009 4:42 PM
To: 'FlightGear developers discussions'
Subject: Re: [Flightgear-devel] Printing Logging Values on FlightGear Screen
Greetings,
It may not be straightforward, but I can tell you how to send output from
any JSBSim aircraft model in FlightGear to a stripchart program, which plots
data at runtime. But, the stripchart program only runs on a Windows machine.
It communicates via socket, so you could send the data from
FlightGear/JSBSim running on any machine to a Windows machine running the
stripchart application.
You can get the stripchart application here:
www.jsbsim.org/stripchart.zip
You need to have an <output> element in your JSBSim aircraft definition
file. I will be posting an updated version of the JSBSim Reference Manual in
the next day or two. I will try to add some information about this
Stripchart application.
I really should modify this application to support any arbitrary data stream
coming from FlightGear as well as JSBSim, because its such a darned useful
tool. Im sure there are other ways to do this, too, using Matlab or
something.
I might be willing to send the code to someone if there is a serious desire
to port it, but its an old Borland C++Builder application u sing Steemas
TeeChart library.
Jon
From: Behlül UÇAR [mailto:ucarbeh...@gmail.com]
Sent: Saturday, August 15, 2009 7:33 AM
To: flightgear-devel@lists.sourceforge.net
Subject: [Flightgear-devel] Printing Logging Values on FlightGear Screen
Hi, I'm researching for weeks to understand FlightGear system.
First, I tried to examine the source code of FlightGear project, it was hard
though. Although I understood some basic things, such as which source file
is needed for what, I couldn't go into details.
Then, I researched the wiki page and saw that there is an API system called
property tree, it can be accessed by C++, XML or Nasal scripting language. I
studied Nasal a bit and learned how to use it.
Actually what i want to do is that I want to print some logging properties
directly on the FlightGear screen. I couldn't see any information how to
print something directly on the FlightGear screen. I can handle properties
with Nasal and show them on terminal but as i said i want them to show up on
gamescreen.
If anyone knows, can you just explain how I can do it, at least which source
file? Or is there a declared API function to do that?
Any help would be appreciated, thanks!!!
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