gerard robin wrote

> 
> On mercredi 19 novembre 2008, Melchior FRANZ wrote:
> > The model manager allows to add models at runtime. Most often
> > they are static (-> geo.put_model()), but one can also
> > register them with adjustable position/orientation properties.
> >
> > If the object was moving (independently or placed relative
> > to a moving aircraft), then one used to run into a nasty
> > fluttering problem: the model didn't keep a constant distance
> > to the aircraft, but -- depending on the speed -- fell behind,
> > jumped forward again, etc.
> >
> > This should now be fixed. It's possible to attach objects
> > to an aircraft or to put an independently moving object
> > (e.g. tanker) in the scenery without any flickering/fluttering.
> > It's possible to put a jeep in the C130, let an animated
> > (female) flight attendent bring coffee to the cockpit etc. :-)
> >
> > See the attached example -- put it in ~/.fgfs/Nasal/. It
> > will place a cow in front of the aircraft.
> >
> > m.
> 
> Nice , now we will be able to make movies/snapshot with Aircraft formation
> flying ( with clones ).
> An other application could be the Canopy, Pilot and Ejection seat, being
> model, controlled by the model manager, and released on request with a
> specific animation in case of emergency.
> We must, only,  mind with the CPU ressource.
> 

We have been able to do almost realistic formations, and to slave sub-models
such as droptanks to parent aircraft which can then be released as a
ballistic object for almost a year now.

The code is reasonably lightweight, and doesn't reduce the frame rate too
much. Examples of all these features are in CVS. 

Vivian



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