If you think on the shots where she create her ice castle, and few particle patterns.... then...
Hmmm... I definitely think they had lines created as specified patterns (according to camera angle (so it looks cool), and they used their lines for emitter trajectory.
However, I don't think they spawned particles on these emitters , but rather, they spawned some fluid smoke (like fumefx or Phoenix FD), and then they used velocity pass from that to drive particles motion.
In any way, keep in mind that Disney is so big studio, that if they wanted, they could create every particle manually animating it. :
These are my thoughts,
Cheers.
Hmmm... I definitely think they had lines created as specified patterns (according to camera angle (so it looks cool), and they used their lines for emitter trajectory.
However, I don't think they spawned particles on these emitters , but rather, they spawned some fluid smoke (like fumefx or Phoenix FD), and then they used velocity pass from that to drive particles motion.
In any way, keep in mind that Disney is so big studio, that if they wanted, they could create every particle manually animating it. :
These are my thoughts,
Cheers.