Re: [Flightgear-devel] an idea about dialog-apply command

2009-02-21 Thread Melchior FRANZ
I object to the proposed change. (Reasons below.)



* Sébastien MARQUE -- 2/21/2009 2:39 AM:
 In this script you'll find several listeners linked to several 
 properties that can be modified using instrument-failures.xml or 
 system-failures.xml.

Except that these are *not* change-only listeners.

|   setlistener(f ~ /serviceable, failure[f]);

You should have used:

setlistener(f ~ /serviceable, failure[f], 0, 1);

... as described on the wiki page about Nasal.



But there are two other ways to avoid your problem:

- Use live on the checkbox and don't apply the whole dialog
  every time.

- Use dialog-apply on selected checkboxes (object-name!):

  binding
  commanddialog-apply/command
  object-namecheckbox1/object-name
  /binding



Because (default Nasal-)listeners are *by design* triggered whenever
they are written to, and this can be desired behavior (what about
applying a signal property multiple times?), and because there are
three methods to avoid problems arising from that, I don't think
applying the patch would be a good idea.

m.

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Re: [Flightgear-devel] [PATCH] to enhance translate animation

2009-02-21 Thread Durk Talsma
Hi Torsten,

Committed. Thanks!

Cheers,
Durk

On Sunday 15 February 2009 20:01:11 Torsten Dreyer wrote:
 the rotate animation has two ways to define a axis
 1. by using center/x-m and axis/[xyz]
 2. by using axis/[xyz]1-m and axis/[xyz]2-m

 The translate animation only supports method 1. and here comes a patch that
 enables method 2 for this animations, too.


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Re: [Flightgear-devel] an idea about dialog-apply command

2009-02-21 Thread Melchior FRANZ
* Melchior FRANZ -- 2/21/2009 9:33 AM:
 You should have used:
 
   setlistener(f ~ /serviceable, failure[f], 0, 1);

Whoops. Of course, I meant:

setlistener(f ~ /serviceable, failure[f], 0, 0);


The meaning of the first optional argument is:

  0 ... just attach  (default)
  1 ... attach and run initially

and that of the second is:

  0 ... trigger on change only
  1 ... trigger on writing -- independent of value (default)
  2 ... trigger on writing to node or children, as well
as addition and removal of children


BTW: We might decide at some point that we only want to dialog-apply
if values changed, but this needs more consideration, and one broken
dialog isn't enough reason to convince me.  ;-)

BTW2: dialog-{apply,update} should handle an arbitrary number
of object-name, not just one.

m.

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Re: [Flightgear-devel] an idea about dialog-apply command

2009-02-21 Thread Sébastien MARQUE
Hi Csaba and Melchior,

oops, sorry, I've made a mistake attaching the failures.nas script, but 
please believe me that I've first tried
setlistener(f ~ /serviceable, failure[f], 0, 0);
in order to behave as written in setlistener doc (wiki and globals.nas).

I've just write back to correct listeners args (0 ,0), and unapply patch 
but here is the result, I only unchecked Airspeed Indicator, in 
Instrument Failures dialog, then use the Apply button:

airspeed indicator failure
altimeter failure
turn indicator failure
slip-skid ball failure
heading indicator failure
vertical speed indicator failure

which is not correct. With the small patch applied, correct listeners 
args (0, 0) and unchecking Airspeed Indicator again:

airspeed indicator failure

which is correct. I think that it wasn't discovered before (was it?) 
because nobody has put several listeners on several properties contained 
in one single dialog, or maybe it has no effects (tests on property 
value as I've done myself before searching to modify dialog-apply?). I 
don't think that the dialog is broken, but for me the dialog-appply 
command is.

Reading the code about dialog-apply fgcommand I've seen that every 
object-name is copied in dialog.cxx, FGDialog::applyValues

 for (unsigned int i = 0; i  _propertyObjects.size(); i++) {
 const string name = _propertyObjects[i]-name;
 if (objectName  name != objectName)
 continue;

 copy_from_pui(_propertyObjects[i]-object,
   _propertyObjects[i]-node);
 }

independantly of changes, so I thought that it was maybe the reason for 
listeners to be fire up.

best regards
seb

Melchior FRANZ a écrit :
 * Melchior FRANZ -- 2/21/2009 9:33 AM:
 You should have used:

  setlistener(f ~ /serviceable, failure[f], 0, 1);
 
 Whoops. Of course, I meant:
 
   setlistener(f ~ /serviceable, failure[f], 0, 0);
 
 
 The meaning of the first optional argument is:
 
   0 ... just attach  (default)
   1 ... attach and run initially
 
 and that of the second is:
 
   0 ... trigger on change only
   1 ... trigger on writing -- independent of value (default)
   2 ... trigger on writing to node or children, as well
 as addition and removal of children
 
 
 BTW: We might decide at some point that we only want to dialog-apply
 if values changed, but this needs more consideration, and one broken
 dialog isn't enough reason to convince me.  ;-)
 
 BTW2: dialog-{apply,update} should handle an arbitrary number
 of object-name, not just one.
 
 m.
 
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[Flightgear-devel] Property System Overview?

2009-02-21 Thread Curtis Olson
Do we have any documentation or overview of the property system that gives a
high level view.  I found something about the contents of the property tree
on our wiki.  There's probably some api documentation floating around.  But
what I really would like is a higher level description of what the property
system is, why it's useful our application, etc.

Pretend Curt is in a meeting and he's given 30 seconds to explain the
property system to smart people who have never seen this concept before.
I've just burned my first 15 seconds with U, er, It's like ,
you know   Now all these smart people are scowling.  Now what!?!

Thanks,

Curt.
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Re: [Flightgear-devel] Property System Overview?

2009-02-21 Thread Torsten Dreyer
 Pretend Curt is in a meeting and he's given 30 seconds to explain the
 property system to smart people who have never seen this concept before.
 I've just burned my first 15 seconds with U, er, It's like ,
 you know   Now all these smart people are scowling.  Now what!?!
I'd try this:
The property system - or property tree - represents the internal state of all 
systems within FlightGear, like the flight dynamics model. The content of 
these internal state variables are presented in a hierarchically manner and 
can easily be accessed through a well known API. A system may present it's 
current state to other systems and let other systems change it's current 
state by allowing them to write to it's own properties. 
One might think of the property system as a global, normalized communication 
platform.

13 seconds - so you have two seconds for Any questions? at the end...

Torsten

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Re: [Flightgear-devel] Property System Overview?

2009-02-21 Thread LeeE
On Saturday 21 February 2009, Torsten Dreyer wrote:
  Pretend Curt is in a meeting and he's given 30 seconds to
  explain the property system to smart people who have never seen
  this concept before. I've just burned my first 15 seconds with
  U, er, It's like , you know   Now all these
  smart people are scowling.  Now what!?!

 I'd try this:
 The property system - or property tree - represents the internal
 state of all systems within FlightGear, like the flight dynamics
 model. The content of these internal state variables are
 presented in a hierarchically manner and can easily be accessed
 through a well known API. A system may present it's current state
 to other systems and let other systems change it's current state
 by allowing them to write to it's own properties.
 One might think of the property system as a global, normalized
 communication platform.

 13 seconds - so you have two seconds for Any questions? at the
 end...

 Torsten

or...

The property system acts as a routing interface, both between 
different high-level FG sub-systems and the outside world.  Data 
that is required by one FG sub-system can be exposed in the 
property tree, where it can then be read or modified, either by 
other internal FG sub-systems, or by  for external input  output.  

  [For example, a left banking joystick input is exposed in the 
property tree where it is read by the FG FDM sub-system.  The FG 
FDM sub-system then in turn outputs an aileron deflection back to 
the property tree where it is then read by the FG animation 
sub-system to animate the aileron deflection in the 3D model.]

Alternatively data [the joystick input], once exposed in the 
property tree, can be read and modified by an external application 
via the FG IO sub-system, such as an external FDM.

  [The output from the external FDM can then be fed back in to FG by 
writing it's data back to the property tree, once again, via the FG 
IO sub-system.]

In addition to the protocols supported by the FG IO sub-system there 
are also telnet and http interfaces, which allow property tree data 
to be read and modified via these interfaces.

An important feature of the property tree interface is that it can 
be tailored and new entries added as required.

  [If you wish to use a custom-written sub-system, such as your own 
Terrain Following and Avoidance sub-system, for example, and 
perhaps implemented or prototyped in Nasal,]

A[a]dding new property tree branches and nodes to handle your unique 
data presents no problems.

If you need to cut it down you can take out the examples [].  You 
can then give examples once you've got their attention.

LeeE

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Re: [Flightgear-devel] Property System Overview?

2009-02-21 Thread Tim Moore
LeeE wrote:
 On Saturday 21 February 2009, Torsten Dreyer wrote:
 Pretend Curt is in a meeting and he's given 30 seconds to
 explain the property system to smart people who have never seen
 this concept before. I've just burned my first 15 seconds with
 U, er, It's like , you know   Now all these
 smart people are scowling.  Now what!?!
 I'd try this:
 The property system - or property tree - represents the internal
 state of all systems within FlightGear, like the flight dynamics
 model. The content of these internal state variables are
 presented in a hierarchically manner and can easily be accessed
 through a well known API. 

Some things I'd add:
Naming a property is very much like naming a file in a file system,
with levels of hierarchy.

The property tree maps very nicely to XML. This is convenient for
initializing the property tree and saving its state.

Values in the tree are typed, but they can also be untyped strings which
will be converted to a typed value when read.

Tim

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Re: [Flightgear-devel] an idea about dialog-apply command

2009-02-21 Thread Csaba Halász
On Sat, Feb 21, 2009 at 11:32 AM, Melchior FRANZ mfr...@aon.at wrote:

setlistener(f ~ /serviceable, failure[f], 0, 0);

  0 ... trigger on change only

As I wrote in my other email, this doesn't work as expected. The
listener is triggered initially even if the property doesn't change.

Sébastien, I think your listeners should check the value of the
property. It might very well happen that a failed instrument is later
fixed, can't it? So the listeners would get triggered again and you'd
have to differentiate between failure and fixing. This would also make
the dialog-apply problem go away.

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[Flightgear-devel] Patch for positioned.cxx

2009-02-21 Thread 黄志勇
Hi,
Compiling the file positioned.cxx with MSVC in debug model, it have some 
problems.
but in release model , it have not.
I think that it is the problem of implementation of STL by Microsoft in debug 
model.
So i add a method for class LowerLimitOfType, and it works.
I'd be happy if someone considers commiting this.

Thanks, ZhiYong Huang


Index: positioned.cxx
===
RCS file: /var/cvs/FlightGear-0.9/source/src/Navaids/positioned.cxx,v
retrieving revision 1.12
diff -u -r1.12 positioned.cxx
--- positioned.cxx   9 Jan 2009 13:15:03 -   1.12
+++ positioned.cxx   21 Feb 2009 17:54:27 -
@@ -55,6 +55,9 @@
   }
 };
 
+typedef std::setFGPositioned*, OrderByType BucketEntry;
+typedef std::maplong int, BucketEntry SpatialPositionedIndex;
+
 class LowerLimitOfType
 {
 public:
@@ -67,11 +70,16 @@
   {
 return a  b-type();
   }
+#if defined(_MSC_VER)  defined(_DEBUG)
+  bool operator()(const FGPositioned* a, const FGPositioned* b) const
+  {
+ return a-type()  b-type();
+  }
+#endif
 };
 
 
-typedef std::setFGPositioned*, OrderByType BucketEntry;
-typedef std::maplong int, BucketEntry SpatialPositionedIndex;
+
 
 static NamedPositionedIndex global_namedIndex;
 static SpatialPositionedIndex global_spatialIndex;

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Re: [Flightgear-devel] Patch for positioned.cxx

2009-02-21 Thread Geoff McLane
Hi,

I have been applying this patch since sometime before Sep last year -
see -
http://geoffair.net/fg/txt/fgfs-047.patch.txt

IMHO the _MSC_VER and _DEBUG switches do NOT need to be applied. I am
forever puzzled how gcc resolves this since the comparison is indeed two
pointers ...

diff -ur CVS\FlightGear\source\src\Navaids\positioned.cxx FlightGear\src
\Navaids\positioned.cxx
--- CVS\FlightGear\source\src\Navaids\positioned.cxxMon Sep 08 21:25:45 2008
+++ FlightGear\src\Navaids\positioned.cxx   Sat Nov 01 19:02:22 2008
@@ -147,6 +147,10 @@
   {
 return a  b-type();
   }
+  bool operator()(const FGPositioned* a, const FGPositioned* b) const
+  {
+return a-type()  b-type();
+  }
 };
 
 static void

Hope this helps...

Regards,

Geoff.

On Sun, 2009-02-22 at 02:14 +0800, 黄志勇 wrote:
 Hi,
 Compiling the file positioned.cxx with MSVC in debug model, it have some 
 problems.
 but in release model , it have not.
 I think that it is the problem of implementation of STL by Microsoft in debug 
 model.
 So i add a method for class LowerLimitOfType, and it works.
 I'd be happy if someone considers commiting this.
 
 Thanks, ZhiYong Huang
 
 Index: positioned.cxx
 ===
 RCS file: /var/cvs/FlightGear-0.9/source/src/Navaids/positioned.cxx,v
 retrieving revision 1.12
 diff -u -r1.12 positioned.cxx
 --- positioned.cxx   9 Jan 2009 13:15:03 -   1.12
 +++ positioned.cxx   21 Feb 2009 17:54:27 -
 @@ -55,6 +55,9 @@
}
  };
  
 +typedef std::setFGPositioned*, OrderByType BucketEntry;
 +typedef std::maplong int, BucketEntry SpatialPositionedIndex;
 +
  class LowerLimitOfType
  {
  public:
 @@ -67,11 +70,16 @@
{
  return a  b-type();
}
 +#if defined(_MSC_VER)  defined(_DEBUG)
 +  bool operator()(const FGPositioned* a, const FGPositioned* b) const
 +  {
 + return a-type()  b-type();
 +  }
 +#endif
  };
  
  
 -typedef std::setFGPositioned*, OrderByType BucketEntry;
 -typedef std::maplong int, BucketEntry SpatialPositionedIndex;
 +
  
  static NamedPositionedIndex global_namedIndex;
  static SpatialPositionedIndex global_spatialIndex;
 
 
 
 
 
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Re: [Flightgear-devel] an idea about dialog-apply command

2009-02-21 Thread Sébastien MARQUE
Yes, I will be obliged to check the value to avoid the instrument fix in 
some cases. But as I discover this problem I wanted to try a solution 
for every dialog-apply, to make the listeners work as expected, for 
future uses, not only the failures system I'm trying to write.

If the fix is rejected, that's not a problem for me, but I think we let 
a problem that can go out again some day...

regards
seb

Csaba Halász a écrit :
 On Sat, Feb 21, 2009 at 11:32 AM, Melchior FRANZ mfr...@aon.at wrote:
setlistener(f ~ /serviceable, failure[f], 0, 0);

  0 ... trigger on change only
 
 As I wrote in my other email, this doesn't work as expected. The
 listener is triggered initially even if the property doesn't change.
 
 Sébastien, I think your listeners should check the value of the
 property. It might very well happen that a failed instrument is later
 fixed, can't it? So the listeners would get triggered again and you'd
 have to differentiate between failure and fixing. This would also make
 the dialog-apply problem go away.
 

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[Flightgear-devel] northern hemisphere vs southern hemisphere

2009-02-21 Thread BARANGER Emmanuel

Hi all,

After some tests, I just discovered something amusing in FG.

In fact, you do not know can be, but the gravity is reversed between the 
northern hemisphere and southern hemisphere. Finally it is the 
impression that it was ;)


Look the Bo105 in northen hemisphere : http://helijah.free.fr/LFKJ2.png
the same in southern hemisphere : http://helijah.free.fr/FACT2.png

Or the Aircrane (blades longer) in northen hemisphere : 
http://helijah.free.fr/LFKJ.png

and in southern hemisphere : http://helijah.free.fr/FACT.png

Although this will not interfere with many of us. Many of us live in the 
northern hemisphere. But what should we say to those who live in the 
southern hemisphere ?


Funny is not it ?

Best regards. Emmanuel

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Re: [Flightgear-devel] Patch for positioned.cxx

2009-02-21 Thread Csaba Halász
On Sat, Feb 21, 2009 at 7:34 PM, Geoff McLane ubu...@geoffair.info wrote:

 IMHO the _MSC_VER and _DEBUG switches do NOT need to be applied. I am
 forever puzzled how gcc resolves this since the comparison is indeed two
 pointers ...

No it isn't. Both uses in lower_bound and upper_bound take an iterator
range and a const Type. So it is a pointer and a reference. gcc is
right.

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Re: [Flightgear-devel] METAR++ or: live wind aloft data for FlightGear

2009-02-21 Thread Vadym Kukhtin
2009/2/19 Torsten Dreyer tors...@t3r.de:

 Comments welcome.

All works fine, thank you very much for this feature.
From now long-range flights got new level of realism.


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Re: [Flightgear-devel] northern hemisphere vs southern hemisphere

2009-02-21 Thread 黄志勇
BARANGER,
It's really funny! :)!

Huang.
在2009-02-22,BARANGER Emmanuel embaran...@free.fr 写道:
Hi all,

After some tests, I just discovered something amusing in FG.

In fact, you do not know can be, but the gravity is reversed between the 
northern hemisphere and southern hemisphere. Finally it is the impression that 
it was ;)

Look the Bo105 in northen hemisphere : http://helijah.free.fr/LFKJ2.png
the same in southern hemisphere : http://helijah.free.fr/FACT2.png

Or the Aircrane (blades longer) in northen hemisphere : 
http://helijah.free.fr/LFKJ.png
and in southern hemisphere : http://helijah.free.fr/FACT.png

Although this will not interfere with many of us. Many of us live in the 
northern hemisphere. But what should we say to those who live in the southern 
hemisphere ?

Funny is not it ?

Best regards. Emmanuel


-- 
BARANGER Emmanuel

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