Re: [Flightgear-devel] First time build

2010-11-29 Thread Geoff McLane
On Sun, 2010-11-28 at 21:29 -0500, Roberto Waltman wrote:
 On 11/28/2010 06:36 PM, Martin Spott wrote:
  Did you check if the download really maxes out your DSL link ?
 Yes. It did, but not all the time. I saw numbers ranging from 120 Kb/sec 
 (the maximum I ever get,) down to 35 Kb/sec.
 
Hi Roberto, Martin,

You are LUCKY ;=)) I sometimes see just 20 Kb/sec, or
less... a full clone is 'days'!, and only using --depth 1 
saves my sanity... gitorious is _SLOW_ for me, most of
the time, regardless of the clone size...

On a mapserver clone I can see 200, or even 300+ Kb/sec,
so this is what I use now... Thanks for this alternate...

But also I would certainly welcome a re-opening of the 
split 'fgdata' repo discussion... I forget how it exactly
ended, except no change was made... There seemed some
good ideas in there...

My --depth 1 clone is about 6GB, with Aircraft being abt 
3.4GB. It seems to makes sense to have say a new 'fgair' 
repo of 2-3GB, reducing the present fgdata 'base'
to 2-4GB? Nearly a split in 2...

Maybe fgfs exe could be adjusted to look in $FG_ROOT/fgair,
as well as $FG_ROOT/Aircraft, then 'aircraft' could be cloned,
and updated into/inside the 'base' clone directory, like -
data/Aircraft
/fgair
/AI
/.git
 ...
and base .gitignore adjusted to ignore this 'fgair'...
and not to some 'separate' local directory, which would
then involve copying, moving, etc...

Anyway, glad to hear your first build went well
overall... enjoy the flying...

Geoff.



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Re: [Flightgear-devel] First time build

2010-11-29 Thread Martin Spott
Geoff McLane wrote:

 On a mapserver clone I can see 200, or even 300+ Kb/sec,
 so this is what I use now... Thanks for this alternate...

You're welcome .  these wonderful ressources are not mine, I'm just
maintaining the site  ;-)

Martin.
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Re: [Flightgear-devel] First time build

2010-11-29 Thread Martin Spott
Roberto Waltman wrote:

 My long term interests are to build a multiple computer/multiple monitor 
 system, (already have an X-Plane based system like that, want to try 
 FlightGear) and to try to use/port/convert Microsoft's FS scenery with 
 FlightGear. (Megascenery in particular)

Depending on the format of this Megascenery, converting scenery might
prove to be rather difficult. The technical part of converting file
formats might be feasible, but the way of organizing scenery is
probably a lot different. So, please be prepared to deal with a few
surprises  :-)

The multi-monitor setup should be rather simple these days - you just
have to buy the hardware 

  
https://photos-3.dropbox.com/i/o/k3FspFi0namcvTKhg_pUFqzu_NM83iumPvOgqkeVGec/7455889/1291129200/11c3e98

These are ten screens connected to one single machine running
FlightGear.

Cheers,
Martin.
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Re: [Flightgear-devel] First time build

2010-11-29 Thread Curtis Olson
On Mon, Nov 29, 2010 at 8:21 AM, Martin Spott wrote:

 Roberto Waltman wrote:

  My long term interests are to build a multiple computer/multiple monitor
  system, (already have an X-Plane based system like that, want to try
  FlightGear) and to try to use/port/convert Microsoft's FS scenery with
  FlightGear. (Megascenery in particular)

 Depending on the format of this Megascenery, converting scenery might
 prove to be rather difficult. The technical part of converting file
 formats might be feasible, but the way of organizing scenery is
 probably a lot different. So, please be prepared to deal with a few
 surprises  :-)

 The multi-monitor setup should be rather simple these days - you just
 have to buy the hardware 


 https://photos-3.dropbox.com/i/o/k3FspFi0namcvTKhg_pUFqzu_NM83iumPvOgqkeVGec/7455889/1291129200/11c3e98

 These are ten screens connected to one single machine running
 FlightGear.


Hi Roberto,

Just for the record (and to echo Martin's suggestion) FlightGear supports a
variety of multi-monitor configurations.

1. The old/expensive way is to have one PC for each display and then sync
them together over the network (one master server + n clients that sync to
the master.)  We have supported this natively for many many years.

2. For the last 2+ (?) years we have supported multiple displays attached to
a single PC.  You can get motherboards with multiple PCI express slots for
multiple video cards and typical nVidia graphics cards usually support 2
monitors each.  I have played with a machine that had 4 video cards for a
total of 8 monitors, and Martin and Torsten and the FSWeekend group had a
machine with 5 video cards for a total of 10 displays.

FlightGear is based on OSG which supports a highly threaded architecture, so
you can run multiple displays on multiple CPU/core machines and have quite
impressive results.

3. FlightGear also supports drawing a camera view to a portion of the
display.  This provides excellent support for devices like the Matrox Triple
Head 2 Go box.  Your computer thinks you have 1 large display, but you can
divide that display into 3 separate camera views and set the view parameters
for each camera.  This allows you to account for the frame around each
display so that straight lines in the scenery line up from one display to
the next and you avoid stair stepping of the horizon in turns.

4. More recently, several of our developers have been looking at supporting
curved displays ... like projecting onto a wrap around cylinder, or even a
parabolic curved screen to produce a collimated display (infinite focus/3d)
like the multimillion $$$ full motion sims use.  This code is just being
hashed out right now so it's not ready for prime time.  At the moment we are
building the hooks and Tim has a simple demo of a transform that would be
appropriate for projecting inside a dome.

This is all very exciting stuff, especially for those that are interested in
home cockpit building and pushing the state of the art forward and mimicking
what is done at the absolute top end of the simulation world.

Best regards,

Curt.


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[Flightgear-devel] First time build

2010-11-28 Thread Roberto Waltman

A word of thanks and praise among the build problems posted periodically 
here.

I just wanted to report that a first attempt to download and build 
FlightGear/SimGear/etc. following the instructions in the wiki went 
along without a hitch.

Only (minor) problem was that the required package libungif4 is now part 
of giflib-tools instead a separate entity. (Ubuntu 10.10, 32bit)

Another inconvenience was the time required to download fgdata. (Took 
more than a day with my low-end DSL connection, all the time crossing 
fingers for a power-glitch free session.)

I am not familiar with git, but surely something can be done to create a 
smaller data set (with just a few airplanes and airports, for example) 
that will allow people to get up and running in a shorter time.
(Will be glad to take a stab at this after I learn more about the system.)

My long term interests are to build a multiple computer/multiple monitor 
system, (already have an X-Plane based system like that, want to try 
FlightGear) and to try to use/port/convert Microsoft's FS scenery with 
FlightGear. (Megascenery in particular)

Any pointers to get started will be appreciated

Again, thanks for making this project what it is.

-- 
Roberto Waltman

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Re: [Flightgear-devel] First time build

2010-11-28 Thread Martin Spott
Roberto Waltman wrote:

 Another inconvenience was the time required to download fgdata. (Took 
 more than a day with my low-end DSL connection, all the time crossing 
 fingers for a power-glitch free session.)

Did you check if the download really maxes out your DSL link ?

Cheers,
Martin.
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Re: [Flightgear-devel] First time build

2010-11-28 Thread Roberto Waltman
On 11/28/2010 06:36 PM, Martin Spott wrote:
 Did you check if the download really maxes out your DSL link ?

Yes. It did, but not all the time. I saw numbers ranging from 120 Kb/sec 
(the maximum I ever get,) down to 35 Kb/sec.

-- 
Roberto Waltman

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