gerard robin wrote:

> -----Original Message-----
> From: [mailto:[EMAIL PROTECTED]
> Sent: 29 September 2008 15:45
> To: FlightGear developers discussions
> Subject: Re: [Flightgear-devel]Bug or Feature? Or an accidently way to
> landinglights; -)?
> 
> On lundi 29 septembre 2008, Vivian Meazza wrote:
> > gerard robin wrote
> >
> 
> >
> > So, if I understand you correctly, there are no missing features, just
> the
> > 2 bugs: z buffer and jitter. Tim has submitted a fix for both those to
> OSG.
> > I've been using it for some time now. Works perfectly, but AFAIKS have
> not
> > been taken aboard by OSG.
> >
> > Before:
> >
> > ftp://ftp.abbeytheatre2.org.uk/fgfs/Screen-shots/bucc-particles.jpg
> >
> > After:
> >
> > ftp://ftp.abbeytheatre2.org.uk/fgfs/Screen-shots/bucc-particles-2.jpg
> >
> > Vivian
> >
> >
> Not exactly what i mean.
> Yes, with xml,  had bug with the z buffer
> 
> No ,xml don't gives every feature which are available with OSG script,
> The result from FG xml script is very simple ( not far from we had with
> PLIB
> effects ).
> OSG script can be very complex with animations into animations regarding
> particles  shapes, particles  colors ... and so on.

 I'm not sure I understand the problems that you describe - the xml
particles do particle colour, size, transparency, texture, and the gravity,
fluid, and wind programs all work (which they don't in the .osg script) -
I'm not aware of anything missing?  Only 2 shapes are available: QUAD and
LINE. I would guess that they cover pretty much all our needs; do you have
an example of requirement for another shape?

> For instance, the effect does not need any texture which is processed
> randomly, according the OSG script. 

Sorry you lost me there - random texture? Language difficulty perhaps?

> To me (and today) there is only one way to get the best nice effects (more
> realistic):
> =>  it is to use the OSG script,  but if it will be fully translated to
> XML
> (which could give some "heavy" coding).

If you could describe what is missing in your opinion, we could perhaps at
least put it on the TODO list. Don't think the coding would be too heavy.

> 
> So up to now, because OSG opened a wide door to many features, i guess
> that we
> must not reduce the size of that door :)
> 
> Again, i agree with the common usage  of it,  like trailing smoke, or some
> dust on the wheel when touching the ground, however we can do more than we
> did with PLIB.
> 

I haven't found an effect I couldn't do yet, but perhaps you have? Let us
know and we will look into it.


Vivian





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