RE: [Flightgear-users] [OT] Aircraft Drawing Package

2005-08-17 Thread Richard Bytheway
I thought of something like this for debugging Yasim models a couple of years 
back 
(http://mail.flightgear.org/pipermail/flightgear-users/2002-August/001511.html),
 but never got anything put together.

If this works in 3D, it could be used to generate simple 3D models for external 
views in FG. So it is not offtopic at all!

Richard


-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Jon Berndt
Sent: 17 August 2005 04:08
To: FlightGear user discussions
Subject: RE: [Flightgear-users] [OT] Aircraft Drawing Package


I've thought about this occasionally (how many of my posts start like that?). I 
wonder if there's anything that could do the reverse of that? Take an aircraft 
drawing (with labeled parts) and turn it into a DATCOM+ file?

Jon

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Bill Galbraith
Sent: Tuesday, August 16, 2005 7:39 PM
To: 'FlightGear user discussions'; [EMAIL PROTECTED]
Subject: [Flightgear-users] [OT] Aircraft Drawing Package


Off Topic - Sorry if I am wasting your time

I am looking for a graphics package to draw aircraft from my DATCOM+ 
configuration files. In that file, I have data available such as airfoil 
sections, wing span, fuselage cross-sections, horizontal and vertical tail 
locations, engine locations, etc.

I'm not expecting highly detailed drawing, but merely rough pictures of what 
the aircraft looks like. I think it would help uncover problems in the 
configuration file. The input would be via a text file, which I can tailor to 
whatever is needed. I don't want to do any interaction with it (at least not 
yet).

I fully expect to have to do something from scratch, but I thought I would ask 
first, to see if anyone has anything that they can suggest.


Thanks,
Bill



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Re: [Flightgear-users] [OT] Aircraft Drawing Package

2005-08-16 Thread Curtis L. Olson

Bill Galbraith wrote:


Off Topic - Sorry if I am wasting your time
 
I am looking for a graphics package to draw aircraft from my DATCOM+ 
configuration files. In that file, I have data available such as 
airfoil sections, wing span, fuselage cross-sections, horizontal and 
vertical tail locations, engine locations, etc.
 
I'm not expecting highly detailed drawing, but merely rough pictures 
of what the aircraft looks like. I think it would help uncover 
problems in the configuration file. The input would be via a text 
file, which I can tailor to whatever is needed. I don't want to do any 
interaction with it (at least not yet).
 
I fully expect to have to do something from scratch, but I thought I 
would ask first, to see if anyone has anything that they can suggest.



Let me first say that there are at least a hundred million 2d drawing 
libs available.  If you want to add this functionality to an existing 
application that might steer you in one particular direction or 
another.  If you want to start something from scratch, you'll probably 
get as many suggestions as there are subscribers to this list.


My first knee jerk reaction would be to look at Perl-Tk.  That's 
something I have experience with and the Tk canvas widget will let you 
do all kinds of 2d drawing, and even some interactive object 
manipulation if you want to get fancy (i.e. maybe you want to eventually 
draw the design and have the application kick out the FlightGear/JSBSim 
configuration file?)


If you suspect you might eventually want to have a 3d component to your 
application, you might want to think about using OpenGL.  It's pretty 
straightforward to set up a 2d drawing surface and then draw lines and 
text in screen coordinates.


FLTK might be an interesting option ... that's a cross platform 
interactive gui builder that generates C code and is then compiled (i.e. 
theoretically fast).  Perl-Tk is a scripted language so edit / run 
/debug turn around time is much faster, but it might start to bog down 
on complicated drawing tasks (but it ought to be more than fast enough 
for what you are proposing.)


There's other ways to approach this too.  If you just want to produce a 
picture, you might look at the GD package for perl.  This allows you 
to open am image drawing surface and draw stuff to it, then save it out 
to png or jpg file for viewing with any image viewer.  I use this 
approach for the Scenery download map.


Of course for those who's brains have opposite polarity compared to 
mine, you can substitude python where ever I've written perl.


I'm sure I'm just scratching the surface here, good luck!

Curt.


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RE: [Flightgear-users] [OT] Aircraft Drawing Package

2005-08-16 Thread Jon Berndt



I've 
thought about this occasionally (how many of my posts start like that?). I 
wonder if there's anything that could do the reverse of that? Take an aircraft 
drawing (with labeled parts) and turn it into a DATCOM+ 
file?

Jon


  -Original Message-From: 
  [EMAIL PROTECTED] 
  [mailto:[EMAIL PROTECTED]On Behalf Of Bill 
  GalbraithSent: Tuesday, August 16, 2005 7:39 PMTo: 
  'FlightGear user discussions'; 
  [EMAIL PROTECTED]Subject: [Flightgear-users] [OT] 
  Aircraft Drawing Package
  Off Topic - Sorry 
  if I am wasting your time
  
  I am looking for a 
  graphics package to draw aircraft from my DATCOM+ configuration files. In that 
  file, I have data available such as airfoil sections, wing span, fuselage 
  cross-sections, horizontal and vertical tail locations, engine locations, 
  etc.
  
  I'm not expecting 
  highly detailed drawing, but merely rough pictures of what the aircraft looks 
  like. I think it would help uncover problems in the configuration file. The 
  input would be via a text file, which I can tailor to whatever is needed. I 
  don't want to do any interaction with it (at least not 
  yet).
  
  I fully expect to 
  have to do something from scratch, but I thought I would ask first, to see if 
  anyone has anything that they can suggest.
  
  
  Thanks,
  Bill
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