pop rbd scale over time

[ela1995 0]

I have a DOP Network with multi solver, which spawn rbd sphere with pop solver. How do I make the size of the sphere small at the source, then become bigger as the current size when it touches the ground.

 

pop_rbd.hip

[GDonkey 1]

Hi there,

Try putting a Sop Solver between the pop solver and bullet solver. Then in there, a primitive sop, turn on transformations. and use a fit expression with @age to scale them over time starting from when each particle is born. Hope that helps.

[toadstorm 343]

If you want Packed RBDs to grow over time, you need to do two things: scale up the transform intrinsic attribute, and force the solver to recalculate collision geometry.

You can do all this in a Geometry Wrangle or POP Wrangle, it's faster than a SOP Solver.

matrix3 xf = primintrinsic(0, "transform", @ptnum);

scale(xf, 1.02);

setprimintrinsic(0, "transform", @ptnum, xf);

i@id = -1; // force collision recompute