Re: [Flightgear-devel] Airfoil bending and geometry animation

2006-12-04 Thread AJ MacLeod
On Sunday 03 December 2006 11:56, Mathias Fröhlich wrote:
 But yes. I am thinking about such a thing.
 I believe that I can't resist to implement that with a vertex shader, even
 if this will not work on any machine. But this will be probably the fastest
 approach I can think of.

Great :-)

  Also Rigs of Rods, built on OGRE, features a fully deforming aircraft
  (Antonov of some sort IIRC) along with the trucks which it focusses on.
 Oops!
 I did not have it this far in mind.
 Do we need that?

Well, probably not... it might be nice of course, but probably over the top 
for now.  Really I only mentioned it as an example of a sim where bending is 
already shown...  There are lots of places where a simpler morph animation 
would be a very useful addition though.

Cheers,

AJ

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Re: [Flightgear-devel] Airfoil bending and geometry animation

2006-12-04 Thread Josh Babcock
AJ MacLeod wrote:
 On Sunday 03 December 2006 11:56, Mathias Fröhlich wrote:
 But yes. I am thinking about such a thing.
 I believe that I can't resist to implement that with a vertex shader, even
 if this will not work on any machine. But this will be probably the fastest
 approach I can think of.
 
 Great :-)
 
 Also Rigs of Rods, built on OGRE, features a fully deforming aircraft
 (Antonov of some sort IIRC) along with the trucks which it focusses on.
 Oops!
 I did not have it this far in mind.
 Do we need that?
 
 Well, probably not... it might be nice of course, but probably over the top 
 for now.  Really I only mentioned it as an example of a sim where bending is 
 already shown...  There are lots of places where a simpler morph animation 
 would be a very useful addition though.
 
 Cheers,
 
 AJ
 

This brings up the question of whether flutter and other mechanical
phenomenon are worth simulating. Flutter is a pretty big deal in some
aircraft. There are also aircraft that experience roll control reversal
at certain airspeeds due to torque induced wing twist.

Josh

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[Flightgear-devel] [Fwd: Re: more weirdness]

2006-12-04 Thread Josh Babcock
So Melchior found what is either a bug or a feature. Here's the
background. I broke my model animation code into several separate xml
files that were serially included as a chain. In the last file I noticed
that the first 78 animations were being ignored (actually overwritten by
it's parent files). Then I asked for help. See Melchior's explanation
(attached). For now I will just use explicit numbering.

Perhaps the include= parameter should be two different ones, merge=
and append=? While we are on the subject, I would also like to suggest
that it be possible to include more than one file from a parent file.
Perhaps what is called for is to have merge and append elements that
can be added inside an xml file an arbitrary number of times. The merge
element would use the current behavior, except allowing several files to
be merged in one spot instead of just one. The append element would do
the same, except instead of assuming that the implied index count starts
at zero at the beginning of the file, it would pick where the parent
left off.

The alternatives, individually numbering animation (or whatever)
elements  or lumping everything together in a tens of thousands of lines
of xml both make developing complicated models more difficult than it
has to be.

e.g.

PropertyList include=foo.xml
becomes:
PropertyList
  merge
filenamefoo.xml/filename
  /merge
  !-- followed by any number of additional merge or append elements --
/PropertyList

Also keep in mind that the xml parser will not accept the following
PropertyList include=foo include=bar
leading to awkward chains of files each including only one child.

Josh

PS, Melchior just suggested an import element which would include a
file's contents at that particular spot. This alone would probably be a
suitable solution. I guess the imported file would not have to contain a
valid PropertyList, just a block of xml to be spliced into the file.
This seems to be a simpler.

---BeginMessage---
* Melchior FRANZ -- Monday 04 December 2006 13:13:
 And I'm not sure yet if it's a bug or a feature [...]

I'm afraid it's an obscure feature. The include tag in

  PropertyList include=foo.xml

doesn't *add* that stuff, but it *merges* it! Because your
included animations don't have explicit indices, the first
animation in each of the four *.xml files has implicit index=0,
and they are all thrown together. You get a nicety like this
for the first animation:

  animation
typenoshadow/type
object-nameCockpit/object-name
property-basesim/model/ch53e/materials/Warn.1antiice/property-base
emission
  red-propemission/red/red-prop
  green-propemission/green/green-prop
  blue-propemission/blue/blue-prop
/emission
property/sim/model/ch53e/instrument-pos/ADFFreqDisp1/property
factor36/factor
offset0/offset
axis
  x0/x
  y1/y
  z0/z
/axis
center
  x-m4.045/x-m
  z-m0.737/z-m
/center
object-name n=1FooRotor/object-name
object-name n=2FooTailRotor/object-name
  /animation

... which does, of course, not make a lot of sense. I doubt
that a fix for the XML loader would be very welcomed. The
right thing to make this work, is to assign explicit indices
in all include files (the top file doesn't need them):

in ch53e-body-anim.xml, for example:

  animation n=1000.../animation
  animation n=1001...

The number is irrelevant, it just needs to be unique.
Or you put everything into the same file (as everybody
else does). Or you suggest an alternative import feature
on the devel list.

m.

---End Message---
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Re: [Flightgear-devel] [Fwd: Re: more weirdness]

2006-12-04 Thread Melchior FRANZ
* Josh Babcock -- Monday 04 December 2006 14:35:

 PropertyList
   merge
 filenamefoo.xml/filename
   /merge
   !-- followed by any number of additional merge or append elements --
 /PropertyList

In this case a simple

   mergefoo.xml/merge

would do. But introducing a global keyword that is executed at
XML load time is a bit problematic. It should probably be different
from other tags ... _MERGE_ or something.Yes, ugly.  :-/
The advantage is that it can be placed everywhere in a file.



 Also keep in mind that the xml parser will not accept the following
 PropertyList include=foo include=bar

The question here is: is this valid XML? Or should the last attribute
always override all former of the same name? Would be cleaner than
the previous method, but less flexible: one could only prepend the
loaded contents.



 PS, Melchior just suggested an import element which would include a
 file's contents at that particular spot. This alone would probably be a
 suitable solution. I guess the imported file would not have to contain a
 valid PropertyList, just a block of xml to be spliced into the file.

Of course it would have to contain the PropertyList tags. But the rest
could be read in as is.

m.

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Re: [Flightgear-devel] [Fwd: Re: more weirdness]

2006-12-04 Thread Melchior FRANZ
* Melchior FRANZ -- Monday 04 December 2006 15:10:
 * Josh Babcock -- Monday 04 December 2006 14:35:
  PropertyList include=foo include=bar
 
 The question here is: is this valid XML?

Apparently not:

  $ xmllint foo.xml
  foo.xml:3: parser error : Attribute foo redefined
  PropertyList foo=123 foo=123

m.

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Re: [Flightgear-devel] [Fwd: Re: more weirdness]

2006-12-04 Thread Josh Babcock
Melchior FRANZ wrote:
 * Melchior FRANZ -- Monday 04 December 2006 15:10:
 * Josh Babcock -- Monday 04 December 2006 14:35:
 PropertyList include=foo include=bar
 The question here is: is this valid XML?
 
 Apparently not:
 
   $ xmllint foo.xml
   foo.xml:3: parser error : Attribute foo redefined
   PropertyList foo=123 foo=123
 
 m.
 

Right, I guess I wasn't clear. This had come up before and someone had
made it clear that you can't have multiple attributes of the same name
in an element.

Josh

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Re: [Flightgear-devel] [Fwd: Re: more weirdness]

2006-12-04 Thread Melchior FRANZ
* Josh Babcock -- Monday 04 December 2006 15:27:
 Melchior FRANZ wrote:
  * Melchior FRANZ -- Monday 04 December 2006 15:10:
   * Josh Babcock -- Monday 04 December 2006 14:35:
PropertyList include=foo include=bar

 Right, I guess I wasn't clear.

You *were* clear. But wrong.  :-}


And here is the law:

  Well-Formedness Constraint: Unique Att Spec
  No attribute name may appear more than once in the same start-tag or
  empty-element tag.  (http://www.w3.org/TR/2006/REC-xml-20060816/)



But we *do* already have a way to include files anywhere in the XML
file. But the contents aren't *inserted* there, but put under a node:

  foo include=bar.xml/

This adds the contents of bar.xml under the node foo/. One could
now declare one property name 'void', which would mean that this isn't
meant to become a node itself, but the contents of bar.xml would
just be inserted in place of it: 

  null include=bar.xml/

Or

  _ include=bar.xml/ :-)OK, too obscure ...

m.

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Re: [Flightgear-devel] [Fwd: Re: more weirdness]

2006-12-04 Thread Stefan Seifert
Melchior FRANZ wrote:
 Also keep in mind that the xml parser will not accept the following
 PropertyList include=foo include=bar
 

 The question here is: is this valid XML?

No it's not valid. In such cases space delimited lists are usually used:
PropertyList include=foo bar

Nine

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Re: [Flightgear-devel] [Fwd: Re: more weirdness]

2006-12-04 Thread Frederic Bouvier
Quoting Melchior FRANZ :

 But we *do* already have a way to include files anywhere in the XML
 file. But the contents aren't *inserted* there, but put under a node:

   foo include=bar.xml/

 This adds the contents of bar.xml under the node foo/. One could
 now declare one property name 'void', which would mean that this isn't
 meant to become a node itself, but the contents of bar.xml would
 just be inserted in place of it:

   null include=bar.xml/

 Or

   _ include=bar.xml/ :-)OK, too obscure ...

I am still unclear about what you want to achieve, but the current syntax allows
to remap the included PropertyNode to another name.

If you want to have the content of the included PropertyNode that replace the
content of a node, that if another behavior, why not using a syntax like this :

   foo replaced-by=bar.xml/

Anyway, the new semantic should be represented by a new attribute and not by a
reserved node name, because node names are free ( with the exception of the
root one ) and attributes are all fixed in the current scheme.

-Fred

--
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http://www.fotolia.fr/p/2278/partner/2278  Other photo gallery
http://fgsd.sourceforge.net/   FlightGear Scenery Designer

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Re: [Flightgear-devel] [Fwd: Re: more weirdness]

2006-12-04 Thread Melchior FRANZ
* Stefan Seifert -- Monday 04 December 2006 15:47:
 Zope Page Templates for example have an attribute for cases where the
 tag should be omitted, like:
 
 foo include=bar.xml omit-tag=yes/

Yes, that's probably the cleanest solution. (Using y instead of or
in addition to yes, to be consistent with other attribute values.)

m.

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Re: [Flightgear-devel] recent spam on atlas-devel

2006-12-04 Thread Dave
Frederic Bouvier wrote:
 Quoting Vassilii Khachaturov :

   
 For some reason, recently the signal to noise ratio on the atlas-devel
 list has diminished virtually to zero due to lots of spam. Can you
 please restrict posting to subscribers only?
 

 Althougth I am an admin for the Atlas project, I don't have the password for 
 the
 mailman administration page, so I'll leave Dave Luff do the job.

   

I'll have a look, but I'm pretty sure that Per Liedman might be the only 
one with the password, hence my inaction so far.  I'll try and get hold 
of him if that is the case.

Cheers - Dave


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Re: [Flightgear-devel] recent spam on atlas-devel

2006-12-04 Thread Frederic Bouvier
Hi Dave,

Quoting Dave :

 Frederic Bouvier wrote:
  Quoting Vassilii Khachaturov :
 
 
  For some reason, recently the signal to noise ratio on the atlas-devel
  list has diminished virtually to zero due to lots of spam. Can you
  please restrict posting to subscribers only?
 
 
  Althougth I am an admin for the Atlas project, I don't have the password
 for the
  mailman administration page, so I'll leave Dave Luff do the job.
 
 

 I'll have a look, but I'm pretty sure that Per Liedman might be the only
 one with the password, hence my inaction so far.  I'll try and get hold
 of him if that is the case.

The admin console of the project allows to change it if needed. Of course, it
nullifies the previous one. I just didn't want to step on your feet.

-Fred

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Re: [Flightgear-devel] Airfoil bending and geometry animation

2006-12-04 Thread Jim Wilson
It hasn't been mentioned in this particular thread, but there is a function in 
plib called the tween controller that does morphs.  I looked at it a bit when 
doing the Wright Flyer.  IIRC there was an issue regarding the way the 
callbacks were done that made it a problem defining the multiple branches that 
were required establish the banks of vertices to morp between.  But probably I 
just didn't spend enough time on it.

Anyway, the logic of morphing vertices would only require that all the branches 
in the model that defined the various positions to be morphed between would 
have the same vertex count and order.  You'd need a way to define the values 
(interpolation points) that each branch represented, then go from there.  In 
the simplest form you would have two sets of wings in the model (each wing 
version being a sg branch).  For each side of the aircraft the wing version 
that is bent all the way up would be assigned to 1.0 and the wing version 
that is bent all the way down would be assinged to -1.0, thus representing the 
extremes of the range of motion.  For more complex flapping, you could have 
multiple sets of wings and each could be assigned to interpolation points 
within the full range.

It might be worth looking at the plib code and seeing how this approach could 
be applied in OSG.

Best,

Jim

 -Original Message-
 From: Roberto Inzerillo [EMAIL PROTECTED]
 Sent: Saturday, 2. Dec 2006 11:57 -0500
 To: FlightGear developers discussions flightgear-devel@lists.sourceforge.net
 Subject: [Flightgear-devel] Airfoil bending and geometry animation
 
 Hi,
  I wonder if someone is working on simulating wings geometry bending 
 into FGFS.
 
 As much as I know geometry deformation animations have not been 
 implemented in any other simulator. Of course, that needs a way to morph 
 the geometry of 3d objects which is currently not available inside FGFS, 
 will that be possible in the near future?
 
   Roberto


-- 
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Kelco Industries
PO Box 160
Milbridge, ME 04658
207-546-7989



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Re: [Flightgear-devel] Eurocopter EC 135 - some delay but....

2006-12-04 Thread Heiko Schulz
Hi,

Well, the german police is changing their color - see
the police of Hamburg!

But the Livery of their helos is their own thing.
Every  federal state of germany has it's own
helo-design. 

Greets
HHS 
--- Karsten Krispin [EMAIL PROTECTED]
schrieb:

 Hi Heiko,
 
 Am Montag, 27. November 2006 23:04 schrieb Heiko
 Schulz:
 

http://hoerbird.ho.funpic.de/flightgear/ec135.baypo.jpg
 
 Great work so far! 
 
 But won't the german police change their color to
 blue in the near future?
 
 Greetings,
 Karsten
 
 

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Re: [Flightgear-devel] [Fwd: Re: more weirdness]

2006-12-04 Thread Melchior FRANZ
* Melchior FRANZ -- Monday 04 December 2006 15:53:
 * Stefan Seifert -- Monday 04 December 2006 15:47:
  foo include=bar.xml omit-tag=yes/
 
 Yes, that's probably the cleanest solution. (Using y instead of or
 in addition to yes, to be consistent with other attribute values.)

My current favorite is omit-node. The syntax would be:

  whatever  include=some-file.xml  omit-node=y/

but this would work, too, and do what one would expect:

  whatever  include=some-file.xml  omit-node=y
  somethingbad/something
  /whatever

The contents of some-file.xml as well as the something node
would appear on the same level where whatever was, as that
node was simply dropped. The whatever is completely arbitrary.
One could have written:

  _ include=some-file.xml omit-node=y/

or 

  imported-instrument-animations include=some-file.xml omit-node=y/




The changes are less intrusive than I had feared:



diff -u -p -r1.14 props_io.cxx
--- props_io.cxx8 Mar 2006 18:16:09 -   1.14
+++ props_io.cxx4 Dec 2006 18:34:18 -
@@ -229,6 +229,21 @@ PropsVisitor::startElement (const char *
   } catch (sg_io_exception e) {
setException(e);
   }
+
+  const char *omit = atts.getValue(omit-node);
+  if (omit  !strcmp(omit, y)) {
+int nChildren = node-nChildren();
+for (int i = 0; i  nChildren; i++) {
+  SGPropertyNode *src = node-getChild(i);
+  const char *name = src-getName();
+  int index = st.counters[name];
+  st.counters[name]++;
+  SGPropertyNode *dst = st.node-getChild(name, index, true);
+  copyProperties(src, dst);
+}
+st.node-removeChild(node-getName(), node-getIndex(), false);
+node = st.node;
+  }
 }

 const char *type = atts.getValue(type);


Does anyone have objections to the whole idea? Or not understand
what it's good for? Or better suggestions for omit-node?

m.

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Re: [Flightgear-devel] Eurocopter EC 135 - some delay but....

2006-12-04 Thread Heiko Schulz
Hi,

Well, the german police is changing their color - see
the police of Hamburg!

But the Livery of their helos is their own thing.
Every  federal state of germany has it's own
helo-design. 

Greets
HHS 
--- Karsten Krispin [EMAIL PROTECTED]
schrieb:

 Hi Heiko,
 
 Am Montag, 27. November 2006 23:04 schrieb Heiko
 Schulz:
 

http://hoerbird.ho.funpic.de/flightgear/ec135.baypo.jpg
 
 Great work so far! 
 
 But won't the german police change their color to
 blue in the near future?
 
 Greetings,
 Karsten
 
 

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Re: [Flightgear-devel] KLN 89

2006-12-04 Thread Dave
[EMAIL PROTECTED] wrote:
 After some back tracing it appears that after 9/1 on the precomplied 
 versions for WIN32 the KLN 89 display is blank in the C172P 2D panel.
  
 Is this by design or just unnoticed?
  

Just unnoticed.  I haven't had much time to touch FlightGear for a 
while, and I guess most people don't use the 2D panel on the C172P since 
it ceased to be the default some years ago.

Thanks for pointing this out - I'll take a look, but it won't be until 
after Christmas.

Cheers - Dave

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Re: [Flightgear-devel] [Flightgear-users] FlightGear on Linux.com

2006-12-04 Thread Curtis Olson

On 12/4/06, Joe Barr wrote:


http://www.linux.com/article.pl?sid=06/11/20/0533247




Hi Joe,

Thanks for the heads up.  That looks like a very intelligent and well done
review.  Perhaps the best review of FlightGear I've seen so far (in terms of
the reviewer getting his head around what FlightGear is all about and how to
really make it sing.)

Regards,

Curt.
--
Curtis Olson - University of Minnesota - FlightGear Project
http://baron.flightgear.org/~curt/  http://www.humanfirst.umn.edu/
http://www.flightgear.org
Unique text: 2f585eeea02e2c79d7b1d8c4963bae2d
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[Flightgear-devel] EC 135 now to download on CVS

2006-12-04 Thread Heiko Schulz
Hi,

I proudly present my first aircraft ready to download:
the Ec 135! 

It's now avalaible in CVS.

A special thank goes to Melchior for uploading and
fixing some mistakes!
Another thnak goes to Maik Justus for helping with the
fdm, which isn't still realistic.
Thanks George Arana for the sound.

Greets
HHS



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Re: [Flightgear-devel] [Fwd: Re: more weirdness]

2006-12-04 Thread Josh Babcock
Melchior FRANZ wrote:

 Does anyone have objections to the whole idea? Or not understand
 what it's good for? Or better suggestions for omit-node?
 
 m.

This seems like a very good solution from a model builder's point of view.

Josh

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[Flightgear-devel] How to drive the Flight Gear airplanes by radar data

2006-12-04 Thread 唐勇
 

Hi,the Flight Gear can be drived by Keyboard,Mouse,Joystick etc.But my question 
is that how can I drive the Flight Gear by my  radar data.My radar data 
contains the flight position(lon,lat,alt) and oritation(pitch,roll,heading).I 
want to know how to input these data to the Flight Gear,and make  many 
airplanes fly automatically.
Thank u very much!!!
 
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[Flightgear-devel] How to drive the Flight Gear airplanes by radar data

2006-12-04 Thread 唐勇
 


Hi,the Flight Gear can be drived by Keyboard,Mouse,Joystick etc.But my question 
is that how can I drive the Flight Gear by my  radar data.My radar data 
contains the flight position(lon,lat,alt) and oritation(pitch,roll,heading).I 
want to know how to input these data to the Flight Gear,and make  many 
airplanes fly automatically.
Thank u very much!!!
 
 -
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[Flightgear-devel] How to drive the Flight Gear airplanes by radar data

2006-12-04 Thread 唐勇
 

Hi,the Flight Gear can be drived by Keyboard,Mouse,Joystick etc.But my question 
is that how can I drive the Flight Gear by my ATC radar data.My radar data 
contains the flight position(lon,lat,alt) and oritation(pitch,roll,heading).I 
want to know how to input these data to the Flight Gear,and make  many 
airplanes fly automatically.
Thank u very much!!!
 
 -
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Re: [Flightgear-devel] How to drive the Flight Gear airplanes by radar data

2006-12-04 Thread Dene
Hi, I don't know the answer to your question, but I do know that posting
3 time in 2 hours with the same question with out a recognized name is a
sure way NOT to get an answer... if you need an answer, my experience
(learnt the hard way) is to post once, with a name that although might
not be pronounceable by some, is at least recognized as a name or
nick-name... good luck in your quest for answers, your endeavors
certainly look interesting.

Cheers
Dene
NZWN

唐勇 wrote:
 Hi,the Flight Gear can be drived by Keyboard,Mouse,Joystick etc.But my
 question is that how can I drive the Flight Gear by my ATC radar
 data.My radar data contains the flight position(lon,lat,alt) and
 oritation(pitch,roll,heading).I want to know how to input these data
 to the Flight Gear,and make many airplanes fly automatically.
 Thank u very much!!!




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[Flightgear-devel] 2d instruments in 3d cockpit

2006-12-04 Thread Yurik V. Nikiforoff

I want use 2d panel into 3d cockpit. I write some like it:

 panel
  pathAircraft/c172p/Models/c172p-2d-panel.xml/path
  bottom-left
   x-m-0.37/x-m
   y-m-0.50/y-m
   z-m-0.10/z-m
  /bottom-left
...
 /panel

to model.xml file.

Panel is visible, instruments work, all right. But if I change view to 
external, I can see instruments through fuselage. 

What I do wrong?

-- 
Wbr, Yurik

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