Hi Curt,
On Thursday 23 April 2009 01:06:08 Curtis Olson wrote:
I'm seeing a ton of these nan's when I start at KHAF ... it's just one or
two or three per frame, but that ends up spewing an awful lot of extra text
to my console.
If you use todays OpenSceneGraph trunk, then, since friday
I just commited this patch with some changes:
The properties probe_elev_m[0..4] were uninitialized and used in the Run()
method before being initialized by a scan of the ground elevations.
The first scan was performed after one second, so for the first second the
probe_elev_m were used in an
Torsten Dreyer a écrit :
I just commited this patch with some changes:
The properties probe_elev_m[0..4] were uninitialized and used in the Run()
method before being initialized by a scan of the ground elevations.
The first scan was performed after one second, so for the first second the
Torsten Dreyer a écrit :
I just commited this patch with some changes:
The properties probe_elev_m[0..4] were uninitialized and used in the
Run() method before being initialized by a scan of the ground elevations.
The first scan was performed after one second, so for the first second
I just commited this patch with some changes:
The properties probe_elev_m[0..4] were uninitialized and used in the
Run() method before being initialized by a scan of the ground
elevations. The first scan was performed after one second, so for the
first second the probe_elev_m
Just updated and recompiled looks good here , no more warnings
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Patrice Poly wrote:
I'm a bit at lost for now, as I really don't see any NaN anymore here, and
don't have another platform to test on.
I would be interested to see on which platforms / configuration this happens,
maybe when more feedback comes in ??
I've been seeing this every time I
Stuart Buchanan wrote:
I've been seeing this every time I load on Ubuntu Hardy. I'm 90% sure
that the ridge-lift enhancement is the root cause - it's the only
source change that went in when I rebuilt last.
We've occasionally seen lots of NaN's before addition of the ridge-lift
as well and
On jeudi 23 avril 2009, Martin Spott wrote:
Stuart Buchanan wrote:
I've been seeing this every time I load on Ubuntu Hardy. I'm 90% sure
that the ridge-lift enhancement is the root cause - it's the only
source change that went in when I rebuilt last.
We've occasionally seen lots of NaN's
gerard robin wrote:
Yes it is difficult to trap these nan which are coming ( + or -
randomly ? ? ? , though, getting trouble with carrier) ), and when we get it
the system is closed to be frozen , with black screen, and command line
overflowed with messages.
And when i tried with GDB
so, a possible fix :
line 218-220 should be :
probe_lon_rad[i] =
fmod((deg2rad*user_longitude_deg+asin(sin(ground_wind_from_rad)
*sin(dist_probe_m[i]/earth_rad_m)/cos(probe_lat_rad[i]))+PI)
the fix, as a patch
http://www.bentha.net/fgfs/ridge-lift/Environment.diff.bz2
hope this works...
This includes the correction for the lee side, according to Ian's advice based
on real fly.
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so, a possible fix :
line 218-220 should be :
probe_lon_rad[i] =
fmod((deg2rad*user_longitude_deg+asin(sin(ground_wind_from_rad)
*sin(dist_probe_m[i]/earth_rad_m)/cos(probe_lat_rad[i]))+PI)
I posted the correct version to
www.bentha.net/fgfs/ridge-lift/ridge-lift-in-environment.zip
Can you please send a diff to current cvs?
Torsten
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around
Can you please send a diff to current cvs?
its in the previous post I made. Sorry, I messed up a bit with mail this
morning...
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around Java (TM)
Patrice Poly a écrit :
the fix, as a patch
http://www.bentha.net/fgfs/ridge-lift/Environment.diff.bz2
hope this works...
nope, same behaviour!!
i think that on my slow PC, your ridge lift is sometimes initialised a
little to early (while position is 0,0,0 maybe), resulting in some nan
nope, same behaviour!!
i think that on my slow PC, your ridge lift is sometimes initialised a
little to early (while position is 0,0,0 maybe), resulting in some nan
in the result of terrain scan, wich lead to a nan in
/environment/ridge-lift-fps.
and as it's used to compute the next
On Thu, 2009-04-23 at 11:56 -0400, Patrice Poly wrote:
nope, same behaviour!!
i think that on my slow PC, your ridge lift is sometimes initialised a
little to early (while position is 0,0,0 maybe), resulting in some nan
in the result of terrain scan, wich lead to a nan in
On Thu, 2009-04-23 at 10:56 -0600, Ron Jensen wrote:
On Thu, 2009-04-23 at 11:56 -0400, Patrice Poly wrote:
nope, same behaviour!!
i think that on my slow PC, your ridge lift is sometimes initialised a
little to early (while position is 0,0,0 maybe), resulting in some nan
in the
Am Donnerstag, den 23.04.2009, 17:43 +0200 schrieb jean pellotier:
Patrice Poly a écrit :
the fix, as a patch
http://www.bentha.net/fgfs/ridge-lift/Environment.diff.bz2
hope this works...
nope, same behaviour!!
i think that on my slow PC, your ridge lift is sometimes
I tried this but no luck here Im still getting this message about every
second:
Warning: invalid line segment passed to IntersectVisitor::addLineSegment(..)
nan nan 3.87514e+06 nan nan 3.85687e+06 segment ignored.
i tested :
_ridge_lift_fps_node-setDoubleValue( 0 );
and no
syd adams writes:
I tried this but no luck here Im still getting this message
about every second:
Warning: invalid line segment passed to IntersectVisitor::addLineSegment(..)
nan nan 3.87514e+06 nan nan 3.85687e+06 segment ignored.
i think this depends on the version of osg
so here comes another attempt to reduce these error to silence :
line 238 :
if ( alt 0.1 ) { probe_elev_m[i] = alt; } else { probe_elev_m[i] = 0.1 ;};
lines 319-321 for desperate cases :
strength = lift_mps * SG_METER_TO_FEET ;
if(isnan(strength)) strength=0;
udpated the patch again, with another Nan killer from jano.
That seems to have worked for him, at least
http://www.bentha.net/fgfs/ridge-lift/Environment.diff.bz2
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On Thu, Apr 23, 2009 at 12:29 PM, Alex Romosan romo...@sycorax.lbl.govwrote:
syd adams writes:
I tried this but no luck here Im still getting this message
about every second:
Warning: invalid line segment passed to
IntersectVisitor::addLineSegment(..)
nan nan
Just a note :
I applied the last patch posted here and success !
No more warnings so far ,with the 777-200, at least.
I'll try more.
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hi
And ty Torsten for committing ! I hope it doesn't trigger too much bugs. My
side I don't see weird things.
for me FG is quite impossible to use with the ridge drift, on startup it
start having full of nan nan nan, cull visitor and so on, with 1 fps,
nearly 90% of my try to start are
Patrice Poly wrote:
I have just received a mail from Ian Forster-Lewis , the author of the
original ridge lift ground sampling algorithm, in which he agrees for
inclusion of his work into FG, provided that his name and link is included in
the code.
Great addition, marvellous !
for me FG is quite impossible to use with the ridge drift, on startup it
start having full of nan nan nan, cull visitor and so on, with 1 fps,
nearly 90% of my try to start are bad.
i commented some lines in ridge_lift.cxx (from 210 to 307, and change
309 to:
I'm seeing a ton of these nan's when I start at KHAF ... it's just one or
two or three per frame, but that ends up spewing an awful lot of extra text
to my console.
Regards,
Curt.
On Wed, Apr 22, 2009 at 5:32 PM, Patrice Poly wrote:
for me FG is quite impossible to use with the ridge
Curtis Olson wrote:
I'm seeing a ton of these nan's when I start at KHAF ... it's just one or
two or three per frame, but that ends up spewing an awful lot of extra text
to my console.
That's weird, at least using the ASK 21 I don't see a single one - on
Linux/AMD64 with GCC-4.3.2,
Le Wednesday 22 April 2009 19:20:54 Martin Spott, vous avez écrit :
Curtis Olson wrote:
I'm seeing a ton of these nan's when I start at KHAF ... it's just one or
two or three per frame, but that ends up spewing an awful lot of extra
text to my console.
That's weird, at least using the ASK
With floating point numbers you usually don't want to check for zero.
Usually you want to check if fabs( number ) epsilon (where epsilon is some
really small number.) This is more stable since inside the computer, a
floating point number is just an approximation ... 1/10 for instance becomes
a
I'm a bit at lost for now, as I really don't see any NaN anymore here, and
don't have another platform to test on.
I would be interested to see on which platforms / configuration this happens,
maybe when more feedback comes in ??
Hi!
I'm new here. I have checked out CVS version of FG about
On Wed, 2009-04-22 at 19:57 -0400, Patrice Poly wrote:
Le Wednesday 22 April 2009 19:20:54 Martin Spott, vous avez écrit :
Curtis Olson wrote:
I'm seeing a ton of these nan's when I start at KHAF ... it's just one or
two or three per frame, but that ends up spewing an awful lot of extra
I would be interested to see on which platforms / configuration this happens,
maybe when more feedback comes in ??
I've got a 32 bits debian SID system, and my athlon xp 2800+ is a single
core, i usually got nearly 20 fps near KSFO.
jano
On Sunday 19 April 2009 17:51:13 Patrice Poly wrote:
I have just received a mail from Ian Forster-Lewis , the author of the
original ridge lift ground sampling algorithm, in which he agrees for
inclusion of his work into FG, provided that his name and link is included
in the code.
You can
I'll see if I can help a bit with the FG ridgelift implementation.
Which glider has the best flight model and instruments? Ridgelift only really
pays off when you have a decent glider.
I've expanded the wiki stub
http://wiki.flightgear.org/index.php/Improving_Glider_Realism to at least
create
Patrice,
I had some nice ridge flights with your work and really enjoyed it! That is a
great improvement not only for sail planes.
Everything compiled nicely here on linux and I hope it does so on the other
supported platformes, too.
I have just committed your files, let's wait for the bugs to
On Mon, Apr 20, 2009 at 9:24 AM, Torsten Dreyer tors...@t3r.de wrote:
Patrice,
I had some nice ridge flights with your work and really enjoyed it! That is
a
great improvement not only for sail planes.
Everything compiled nicely here on linux and I hope it does so on the other
supported
On Mon, Apr 20, 2009 at 9:24 AM, Torsten Dreyer tors...@t3r.de wrote:
Patrice,
I had some nice ridge flights with your work and really enjoyed it! That
is a
great improvement not only for sail planes.
Everything compiled nicely here on linux and I hope it does so on the
other
On Monday 20 April 2009 13:12:27 Ian Lewis wrote:
I'll see if I can help a bit with the FG ridgelift implementation.
Fantastic! This is something that we've been missing for a long time in FG.
Which glider has the best flight model and instruments? Ridgelift only
really pays off when you have
Hi Torsten/Patrice,
What steps would a person need to perform to test out this code. Is it on
by default? Can I see the effect in any aircraft?
Thanks,
Curt.
Hello Curt,
I'm very happy to see this found some interest !
you don't need to set anything, its on by default, just monitor
I have just received a mail from Ian Forster-Lewis , the author of the
original ridge lift ground sampling algorithm, in which he agrees for
inclusion of his work into FG, provided that his name and link is included in
the code.
He also proposes a refinement of the way sink is calculated on
I have it working now in environment.
It leaves room for thermals, and mixes good with them.
I also refined the thermal model, so that it behaves more like a real
thermal.
I am still waiting for an answer from the guy who wrote the algorithm for
ridge lift, regarding licensing. I'm almost
2009/4/11 Patrice Poly p.pol...@gmail.com:
I made a working ridge lift in a AI object.
It WORKS, and , even, it works GOOD !
Great!!
I'm wait for this feature already for a couple of years...
Please keep to develop it!
--
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WBR, Vadym.
This looks really neat. I'm not sure why you put it into the AI
subsystem, though. It makes more sense to me to have it in
Environment/environment.cxx with the other basic wind calculations?
I have been looking into environment.cxx
I am not sure I understand how this works.
environment.cxx
Hello, thanks to the info by Hooray in the forum, and most of all thanks to
the awesome paper found by him here :
http://carrier.csi.cam.ac.uk/forsterlewis/soaring/sim/fsx/dev/sim_probe/sim_probe_paper.html
I made a working ridge lift in a AI object.
It WORKS, and , even, it works GOOD !
I am
On Sat, 2009-04-11 at 04:52 -0400, Patrice Poly wrote:
Hello, thanks to the info by Hooray in the forum, and most of all thanks to
the awesome paper found by him here :
http://carrier.csi.cam.ac.uk/forsterlewis/soaring/sim/fsx/dev/sim_probe/sim_probe_paper.html
I made a working ridge
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