hello everyone.

I've built a circular prefractured pattern in SOP with the Voronoi fracture Sop.
so far so good.

now I would like to make the differents pieces fall down with gravity but starting in the center than gradually growing to the outside and sending more and more objects to the solver.

I'm quite new to the RBD solver and under pressure.
if anyone had a pointer or to give me the global idea how to do that it would be great help.
thanks in advance
luc

Can you post a scene file up showing what you have done so far

Rob

this is a simplified scene that I hope explain the thing.
I'd like to have this kind of effect but without using the ball , only gravity starting from center and growing radially.
thanks in advance
luc

Just to start fall of objs from center , use active value dop with condition $OBJID<$F*n , where n is number of objects you want to fall down per frame.

In sop play with sort sop, just choose different methods of point sort and see how it affects the dop output.