Re: [Flightgear-devel] updrafts...

2008-09-25 Thread AJ MacLeod
On Friday 26 September 2008 01:00:32 Syd wrote:

 VFR flying in these BC mountains is pretty unrealistic , atmosphere wise
 , which is why I want to attempt this . You can clear a ridge at 50 feet
 if you want , without the danger involved   I.ve been on a few rides
 where cresting a ridge and hitting the downdraft nearly planted you on
 the ceiling .. 

Hi Syd,

I'm glad you're attempting this, and hope you get something useful out of 
it... from my (limited) gliding experiences, the local weather in FG is much 
too stable and predictable as you mention... and obviously there is 
absolutely no lift from ridges (or sinks on the leeward sides, as you also 
point out.)

While atmospheric modelling is not exactly an easy game, I think your simple 
approach might be a useful and workable start and I'd be happy to help with 
testing if nothing else.

Cheers,

AJ

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Re: [Flightgear-devel] updrafts...

2008-09-25 Thread Stuart Buchanan
--- On Thu, 25/9/08, Syd wrote:
  I 've been pondering an idea of adding
 updraft/downdrafts to the 
 environment, probably as a part of turbulence , so it can
 be 
 enabled/disabled...
 My idea is to calculate wind-speed-from -down , by checking
 wind speed , 
 direction , and the normal of the
 scenery triangle directly beneath the aircraft , sampling
 every second 
 or so.Also with a scenery material  and time of day check
 for updrafts 
 over flat country .
 Ive tried to find a starting point in the code , but get
 more 
 discouraged as I get lost in it.

Hi Syd,

I tried doing this a couple of years ago. As I recall, I was able to get the 
normal informaton from the scenery triangle fairly easily, and calculate the 
up/down draft. The problem came when I tried to have the affect the aircraft. 

Unfortunately I can't remember where I inserted the normal calculation code.

Sorry I can't be of more help - but at least you know that part of your 
solution is possible ;)

-Stuart


  

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Re: [Flightgear-devel] Good company on the list;

2008-09-25 Thread Martin Spott
Hi Alex, nice to read you,

Alex Perry wrote:

 FGFS stopped building on my develop machine and I've not resolved the
 issue yet.

May I expect you to increase your participation here if we're going to
solve your trouble ?  ;-)

Martin.
-- 
 Unix _IS_ user friendly - it's just selective about who its friends are !
--

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Re: [Flightgear-devel] [Flightgear-cvslogs] CVS: data/Nasal glide_slope_tunnel.nas, 1.4, 1.5

2008-09-25 Thread Melchior FRANZ
* James Turner -- Wednesday 24 September 2008:
 Well, in the future, the key args for getActiveRunwayForUsage are what  
 I said - the usage type (landing or takeoff, maybe some other flags in  
 the future for weird stuff, like helis) and the inbound / outbound  
 radial, [...]

OK, then let's revisit the topic once there's a necessity. While
we want to offer *data* even if they aren't needed yet, because
one never knows what clever stuff people can do with them, we don't
do the same with interface functions. There, less is more.

Traditionally we only add interface functions when something can't
be done on the Nasal side, or not with the required performance.
Searching through a list of runways (which we have already) is
rather simple. And it's done already with success. We may want to
add some more data to airportinfo() for extensions of that search.

At the moment we don't even have a way to query an aircraft's
weight and size, so there's a limit for the sophistication of
a runway search anyway.



 I see you don't like my long_underscored_function_names [...]

That's because we don't have a single function name with underscores.
It's setprop, not set_prop. It's settimer, not set_timer, etc. It's
about consistency. I'm also a bit unhappy with the active in the
name. You can't search for an active runway based on runway data. What
is active is decided by the ATC. You can at best search for the best
suited runway.  :-}


 
 but I'm not a fan of script functions that take (potentially) hard-to- 
 remember arguments:
 
 foo = airportinfo(EHAM, landing, 40.0) // 40.0 being the  
 inbound radial in degrees

Nasal TNG solves that problem:

  foo = airportinfo(id:EHAM, radial:40);

That's assuming that the function is a wrapper for the built-in
command.



 I guess I was thinking airportinfo was an 'airport lookup' function, I  
 hadn't considered it returned 'everything you ever wanted to know'  
 which seems quite ambitious.

That's understandable. You haven't contributed a single line of Nasal
so far, have you?  :-P

m.

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Re: [Flightgear-devel] updrafts...

2008-09-25 Thread Syd
Thanks for the replies folks, glad to know earlier attempts partly 
successful :).I'll post here if I think I'm making progress with it , 
but since I seem to have half a dozen projects going at once it might be 
sow going Cheers. 

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Re: [Flightgear-devel] Good company on the list;

2008-09-25 Thread Alex Perry
On Thu, Sep 25, 2008 at 3:52 AM, Martin Spott [EMAIL PROTECTED] wrote:
 FGFS stopped building on my develop machine and I've not resolved the
 issue yet.
 May I expect you to increase your participation here if we're going to
 solve your trouble ?  ;-)

Heh.  Yeah, that's why I poke at it occasionally.  Currently, the
build finishes and an attempt to run segfaults immediately.  I haven't
investigated further yet.  Using fgfs, simgear, osg, plib from cvs/svn
and the rest from debian lenny on amd64.

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Re: [Flightgear-devel] key-handler system allowing many actions with only few keyboard shortcuts

2008-09-25 Thread Melchior FRANZ
* Melchior FRANZ -- Tuesday 23 September 2008:
 The implementation is new, the idea isn't: John D. has suggested
 such a feature. (I had started implementing it, but never finished.)

FWIW: I'm about to finish that, so no need to adapt your version. :-)

BTW: there's now a props.runBinding() function that allows to execute
regular bindings from Nasal. That way you can use all of the
fgcommands in your XML config and don't need to implement all the
actions.

m.

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[Flightgear-devel] [OT]100 years of vertical flight- a very great comic!

2008-09-25 Thread Heiko Schulz
Hi,

just found this - I think it could be maybe very interesting for some people 
here. It explaines very great the history about vertical flight- I enjoed this 
comic much:

http://www.eurocopter.com/100years/FO/scripts/myFO_contenu.php?noeu_id=58lang=EN

Regards
HHS


still in work: http://www.hoerbird.net/galerie.html
But already done: http://www.hoerbird.net/reisen.html

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