[Plib-users] PARTICLES BILLBOARDING

[Luca M. <luc...@li...>]

Hi,

It's about a week that I'm trying to create a particle system with=
 FlightGear. Although it works into the 
simulator, I'm not able to make=
 the particles visible from all the positions of the view (they are 
vis=
ible in some position but if the view rotates they disappear). 

How I =
could solve the problem? It's fearfully annoying the fact that I see them=
 only for a few 
seconds... 

I've set to true the flag turn_to_face, =
but it doesn't works. I've also tried to get some data from 
FlightGear =
about the position of the viewer, but I don't understand the use of GL_MO=
DELVIEW_MATRIX 
so I don't know which data I've to get (there's a lot of=
 stuff; relative position, absolute position, a view 
matrix ...).

Pl=
ease, someone could help me... 

Thanks,
Luca