I'm having problem with this Solver SOP, the Prev_Frame doesn't contain the attributes I modify in the solver, like it's always the first frame.
Maybe I don't understand how this work but isn't the Prev_Frame node containing the output geo from previous frame?
I idea here is to check if a point velocity is above a certain threshold then start a timer on it (decreasing each frame), these points are used as a smoke emitter.
The original geo is a RBD sim, at first a thought is was that but even with a test sphere it doesn't work...
Please help, thanks you!