blend option in 3d space

[raphmeelo]

hello everyone!
i've encountered an unespected problem turning a particle system in a 3d space.
in this case i've built a 2d circular orbit with a red png as particle that goes around smoothing like a comet.
i put the (ADD) blending mode but when i rotate the orbit in the 3d space (on the Y axis) the blend screws up.

look at this screenshot with the same particle system at three different rotation, with the same blend mode

after that i also tried to change the 2d particle with a 3d, but all i've obtained is 3 spheres turning around with no trails.

[scotthmurray]

This is an old repo and is no longer monitored.

I'd suggest posing this question to forum.processing.org