Morning all,

Okay, bear with me if this seems an extremely dumb question.  I'm extremely new 
to OSG (heck, I'm new to 3D graphics in general, I've only made it through 
Chapter 5 of the OpenGL red book...), and I'm basically having to learn as much 
as fast as I can and what might seem obvious may be moderately difficult to 
me...

Anyway, the question is this:  I'm trying to simulate a jet stream emanating 
from a projectile in motion (ie. jet, rocket, space shuttle, etc.).  I've 
managed to get through setting up a ParticleEffect and attaching it to the back 
of a Node model and everything, and in terms of where it's placed and such it 
actually looks pretty good, but it's in the details I'm a little bothered.  

While I've been able to change the actual size of the particles, I can't seem 
to figure out how to change the SHAPE of the particles.  I'd like to try to 
round them out a little.  I noticed the Particle object has the function 
setRadius but I've changed that to all sorts of extrema and don't see any 
difference...  changing the size range works but they're still perfect squares. 
 Is there no way to produce round (or even just rounded edge) particles? 

Thanks to anyone that can offer any help...

Kris

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http://forum.openscenegraph.org/viewtopic.php?p=14247#14247





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