On lundi 29 septembre 2008, Vivian Meazza wrote: > 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?
sorry, my language is not good ( out from the hospital, i need some rest :) , same problem in French :( ) > > > 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. I had tried to get the effect that i get with the Catalina wakes OSG, without any success. When testing the xml scripts, i never got the same result ( may be i am wrong), the result was very poor. The content of the OSG scripts (when reading it) shows that there is an animation into an other animation, and a processing of shape colors and transparencies which avoid any texture ( the texture looks to be created randomly). We can notice that, these OSG examples are a very low level examples ( even they are better than my XML translation) With it we can have an higher complexity ( i am working on it) and i hope to get better and better effects, without any limitations, but the know how the "writer" and the power of the CPU. So, i concluded that only OSG script is able to answer the requested complexity. > > > 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. You are right, if we only want the basic ones, which answer today to most of the "generic" requests, in addition to it, we still have Plib which answer too ( the Catalina water bomber use it, i don't need to translate it in OSG) However with OSG we can do more and better, the wake effects , the fire effect, exploding effect are other specific cases which wants more complexity. > > > Vivian > Cheers -- Gérard http://pagesperso-orange.fr/GRTux/ "J'ai décidé d'être heureux parce que c'est bon pour la santé. Voltaire " ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
