ofx3dUtils - orienting particles when using orbitAround

hello,

would billboarding your particles work? it’s a technique that makes sure flat sprites always are facing the camera.

There’s a little discussion here about it:
http://forum.openframeworks.cc/t/vbo-billboard-particle-system/2639/0

and a light house tutorial that show some of the vector math:
http://www.lighthouse3d.com/opengl/bill-…-hp?billCyl

hope this is on the right track,

happy new year!