Re: [Flightgear-devel] Flightgear visualization as streaming video

2007-05-23 Thread Antonio Almeida
Thanks! That sounds like it could solve my problem. However, I couldn't get
it to work -- FlightGear reports: Unknown option '--jpg_httpd=5502'

My command line, as generated by the wizard, was:

C:\Program Files\FlightGear\bin\win32fgfs.exe --fg-root=C:\Program
Files\Fligh
tGear\data --fg-scenery=C:\Program
Files\FlightGear\data\Scenery;C:\Program
Files\FlightGear\scenery --airport-id=02Q --aircraft=f16 --control=joystick
--d
isable-random-objects --disable-ai-models --jpg_httpd=5502

I tried with --jpg-httpd=5502, and I get the same error: Unknown option
'--jpg-httpd=5502'

I'm running v0.9.10, could that be the problem?

Antonio

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Ron
Jensen
Sent: quarta-feira, 23 de Maio de 2007 3:30
To: FlightGear developers discussions
Subject: Re: [Flightgear-devel] Flightgear visualization as streaming video

On Tue, 2007-05-22 at 18:13 +0100, Antonio Almeida wrote:
 Hi,
  
 I would like to use FlightGear to generate the scene observed by a 
 UAV's onboard camera.
  
 Basically, this would translate to feeding FlightGear the FDM data and 
 visualizing the image generated by FlightGear in another computer, 
 across a network, using for example streaming video.
  
 I suppose this is a bit of a far-fetched idea, but is there any sort 
 of support for this (or something similar) already implemented?
  
 If not, do you have any suggestions on how to achieve it, using 
 external tools and/or contributing to FlightGear?
  
 At the moment I'm just brainstorming!
  
 Thanks,
 António Almeida

Have you looked at the --jpg-httpd option yet?  
From fgfs --help --verbose:
--jpg-httpd=portEnable screen shot http server on the specified
port


This works to send jpeg images over the net that can be refreshed fairly
rapidly...  Not exactly streaming video, but close.  I'm not sure if/how you
could scale it down short of scaling the window on the server machine.

Ron




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Re: [Flightgear-devel] Flightgear visualization as streaming video

2007-05-23 Thread Antonio Almeida
Thanks, I'll check out the latest CVS version as soon as I get around to
implementing.
 
Your experience is very similar to what I was looking for! If it is as fast
as you mention then it will surely be enough to simulate a streaming video,
from the viewer's perspective.
 
I believe jpg-httpd will be enough for my purposes, however a standard
streaming video would still be nicer. If FlightGear is able to generate
those jpgs, then it may be possible to encode them to a video in real-time,
using third party tools, and stream it. Perhaps I could contribute with such
a feature (not in the near future, I'm afraid).
 
Antonio

  _  

From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Leidson
Campos A. Ferreira
Sent: quarta-feira, 23 de Maio de 2007 14:51
To: FlightGear developers discussions
Subject: Re: [Flightgear-devel] Flightgear visualization as streaming video


Yes, the v0.9.10 there a problem with FlightGear Wizard on Windows, but I've
done a fix, please check latest CVS version.

About video streaming, jpg-httpd is working fine and very fast. I've done a
ground station using Borland C++ Builder for a client that is using
Flightgear and this implementation seems to be like your project. 

The jpg-httpd option works with impressive performance.


Leidson Campos
PlanetaMessenger.org Java Universal Messenger



On 5/23/07, Antonio Almeida [EMAIL PROTECTED] wrote: 

Thanks! That sounds like it could solve my problem. However, I couldn't get
it to work -- FlightGear reports: Unknown option '--jpg_httpd=5502'

My command line, as generated by the wizard, was:

C:\Program Files\FlightGear\bin\win32fgfs.exe --fg-root=C:\Program
Files\Fligh
tGear\data --fg-scenery=C:\Program
Files\FlightGear\data\Scenery;C:\Program
Files\FlightGear\scenery --airport-id=02Q --aircraft=f16 --control=joystick

--d
isable-random-objects --disable-ai-models --jpg_httpd=5502

I tried with --jpg-httpd=5502, and I get the same error: Unknown option
'--jpg-httpd=5502'

I'm running v0.9.10, could that be the problem? 

Antonio

-Original Message-
From: [EMAIL PROTECTED]
[mailto:  mailto:[EMAIL PROTECTED]
[EMAIL PROTECTED] On Behalf Of Ron
Jensen
Sent: quarta-feira, 23 de Maio de 2007 3:30
To: FlightGear developers discussions
Subject: Re: [Flightgear-devel] Flightgear visualization as streaming video 

On Tue, 2007-05-22 at 18:13 +0100, Antonio Almeida wrote:
 Hi,

 I would like to use FlightGear to generate the scene observed by a
 UAV's onboard camera.

 Basically, this would translate to feeding FlightGear the FDM data and 
 visualizing the image generated by FlightGear in another computer,
 across a network, using for example streaming video.

 I suppose this is a bit of a far-fetched idea, but is there any sort 
 of support for this (or something similar) already implemented?

 If not, do you have any suggestions on how to achieve it, using
 external tools and/or contributing to FlightGear?

 At the moment I'm just brainstorming!

 Thanks,
 António Almeida

Have you looked at the --jpg-httpd option yet?
From fgfs --help --verbose:
--jpg-httpd=portEnable screen shot http server on the specified 
port


This works to send jpeg images over the net that can be refreshed fairly
rapidly...  Not exactly streaming video, but close.  I'm not sure if/how you
could scale it down short of scaling the window on the server machine. 

Ron




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[Flightgear-devel] Flightgear visualization as streaming video

2007-05-22 Thread Antonio Almeida
Hi,
 
I would like to use FlightGear to generate the scene observed by a UAV's
onboard camera. 
 
Basically, this would translate to feeding FlightGear the FDM data and
visualizing the image generated by FlightGear in another computer, across a
network, using for example streaming video.
 
I suppose this is a bit of a far-fetched idea, but is there any sort of
support for this (or something similar) already implemented? 
 
If not, do you have any suggestions on how to achieve it, using external
tools and/or contributing to FlightGear?
 
At the moment I'm just brainstorming!
 
Thanks,
António Almeida
 
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[Flightgear-devel] Problem using external FDM

2006-12-19 Thread Antonio Almeida
Hello all,

I'm trying to get my FDM to work with FlightGear.

My FDM runs in Linux and sends packets to FlightGear using UDP.
Everything works fine when FlightGear runs in Windows on another machine
in my network.

What I cannot do is get things to work when FlightGear is running under
Linux and on the same machine as the FDM. What happens is that my FDM
correctly sends the packets to the loopback interface and specified
port, as reported by a packet sniffer, but FlightGear does not react. 

Possibly relevant information follows:

Linux: SUSE 9.3
FlightGear version: 0.9.3-91
Ports tried: 5500, 12204, 7789
Example FlightGear parameters: fgfs --native=socket,in,30,,7789,udp
--fdm=external 
(also tried --native-fdm instead of --native)

Relevant FlightGear console output:
Parse I/O channel request: native,socket,in,30,,7789,udp
  protocol = native
  medium = socket
  direction = in
  hertz = 30
  hostname =
  port = 7789
  style = udp


Thanks,
Antonio Almeida


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[Flightgear-devel] Addressing the discontinuity that occurs when using discrete terrain altitude data during landing...

2006-12-07 Thread Antonio Almeida
Hi!

I've been working on a prototype flight simulator and I'm running into
an issue I have no idea how to solve, so I decided to ask here since
this very same problem might have been addressed in FlightGear.

I want to model the landing of my aircraft. My problem lies in the
altitude data. The data I have to use is a pixel map, which means that
one square (which has around 100 meters side) has a certain value of
altitude and the adjacent square has a completely different value...
This means that if I try to land the aircraft in the border between two
squares... it will either fall down or crash against this virtual
discontinuity!

I'm betting there's an obvious solution to this, but I'm out of
ideas!... Any suggestions?

Thanks!

Antonio

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