RE: [Flightgear-devel] Modelling tools

2006-01-17 Thread Norman Vine
flying.toaster writes:
 
  I am fairly new to flightgear and there are two subjects I would like to get 
 involved into.
 
 I am a 3D modeller for Strike Fighters : Project 1 (check out 
 http://www.column5.us, there is a F/A-18 model I made) 
 using blender.
 I am willing to build many models for FlightGear but I can see two issues :
 * Blender does not allow to change easily the transforms in the scenegraph 
 (i.e. hard to orient axis)
 * Using the XML configuration file to adjust animation can be pretty clumsy 
 requiring a long trial  error process.
 
 I would like to know if it could be possible to start a project for a plib 
 application allowing to set up animations, 
 rotating an moving axis in a scenegraph and exporting the corresponding 
 animation in the xml config file. That would make 
 3D models *much* more easy.
 If anybody is interested or knows how to setup such a project I would be 
 happy to join

Hmm it wouldn't be to hard to get PrettyPoly to do this sort of thing,

To bad it has been adbandoned

Perhaps a C++ hacker could add what you wnat to it.

I don't imagine it would take too much to get it to compile

see http://prettypoly.sf.net

Norman



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Re: [Flightgear-devel] Modelling tools

2006-01-17 Thread AJ MacLeod
On Tuesday 17 January 2006 06:24, flying.toaster wrote:
  I am fairly new to flightgear and there are two subjects I would like to
 get involved into.

I hope you decide to stay - I've already pointed out some of your great 
looking models (from the CSP forums) to others here :-)

 I am a 3D modeller for Strike Fighters : Project 1 (check out
 http://www.column5.us, there is a F/A-18 model I made) using blender. I am
 willing to build many models for FlightGear but I can see two issues : *
 Blender does not allow to change easily the transforms in the scenegraph
 (i.e. hard to orient axis) * Using the XML configuration file to adjust
 animation can be pretty clumsy requiring a long trial  error process.

I am also building a model for fgfs, although to rather lower artistic 
standards than yours... but to be honest, most of the animation is actually 
not too hard to do in our XML system.  There are one or two exceptions I've 
come across in gear animation, but aside from that with one or two little 
hints and a bit of practice it mostly becomes fairly straightforward.

You not be aware of Melchoir's fgfs animation exporter for blender (from 
http://members.aon.at/mfranz/fgfs_animation.py - also see 
http://members.aon.at/mfranz/flightgear/blender-textured-lights.html) which 
can do some of the XML legwork for you, although not quite to the degree you 
are looking for.

Also courtesy of Melchoir I hope we might see a morph type animation soon 
which might make some currently difficult things easier.

 I would like to know if it could be possible to start a project for a plib
 application allowing to set up animations, rotating an moving axis in a
 scenegraph and exporting the corresponding animation in the xml config
 file. That would make 3D models *much* more easy. If anybody is interested
 or knows how to setup such a project I would be happy to join

Aside from the script above I don't know of such a project yet... There is 
talk of people wishing to move fgfs to OSG which might make such a thing much 
easier, but that's some way into the future if at all.

In the meantime, if you need advice or hints on using our current animation 
system, the IRC channel is often a great source of quick pointers...

Cheers,

AJ


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RE: [Flightgear-devel] Modelling tools

2006-01-17 Thread Jon S. Berndt
 I am also interested in the modelling of jet engine. I've been 
 looking into the problem for quite some time and have darkened 
 many pages of equations in order to find a model that could meet 
 my expectations.
 
 What I would like to achieve would be the following
 - Engine stall and surge simulation
 - supersonic behavior (intake + nozzle)
 - arbitrary number of spools
 - adequate computation of display parameters (N1, N2, Fuel flow, EGT ...)
 - adequate engine response
 
 I would like to know what is the status of this modelling today 
 in JSBSim and with whom such matters could be discussed
 
 Regards
 
 FT

Hi, FT:

You could discuss this on the JSBSim list, or here.

Right now, we have a turbine model that seems to work pretty well, but you are 
welcome to take a look at that and either suggest/work on specific 
improvements, or see how the interfaces work and try writing one yourself. Note 
that one limitation that makes the task a bit harder is the generalization so 
that it works for many specific engines. And the specification/configuration 
file must be designed with publicly available (or deducible) information in 
mind.

Right now we don't use a nozzle, or inlet. Some discussion on that would be 
interesting.

Jon



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[Flightgear-devel] Modelling tools

2006-01-16 Thread flying.toaster
Hi there,

 I am fairly new to flightgear and there are two subjects I would like to get 
involved into.

I am a 3D modeller for Strike Fighters : Project 1 (check out 
http://www.column5.us, there is a F/A-18 model I made) using blender.
I am willing to build many models for FlightGear but I can see two issues :
* Blender does not allow to change easily the transforms in the scenegraph 
(i.e. hard to orient axis)
* Using the XML configuration file to adjust animation can be pretty clumsy 
requiring a long trial  error process.

I would like to know if it could be possible to start a project for a plib 
application allowing to set up animations, rotating an moving axis in a 
scenegraph and exporting the corresponding animation in the xml config file. 
That would make 3D models *much* more easy.
If anybody is interested or knows how to setup such a project I would be happy 
to join

I am also interested in the modelling of jet engine. I've been looking into the 
problem for quite some time and have darkened many pages of equations in order 
to find a model that could meet my expectations.

What I would like to achieve would be the following
- Engine stall and surge simulation
- supersonic behavior (intake + nozzle)
- arbitrary number of spools
- adequate computation of display parameters (N1, N2, Fuel flow, EGT ...)
- adequate engine response

I would like to know what is the status of this modelling today in JSBSim and 
with whom such matters could be discussed

Regards

FT



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