Let's say my unpacked geometry contains 5000 pieces. Is there a way I can control the Assemble sop so it creates only 2 packed primitives?

In a primitive wrangle, I used:


...and in the Assemble after it, I checked the Piece Attribute and used "class" but it doesnt work...

-Olivier

Is each "piece" a single prim? If not you don't want to use @primnum.
I would use a connectivity sop to give each connected piece a unique attrib first, then you can do:

i@class = 0;
if(i@attrib > 2500) i@class = 1;

That would not work because the Assembly is where it's not working.

I ended up not using a for-each loop with a Pack sop to do the trick.

Sorry I thought Assemble took a piece attribute, that's what I get for trying to help from memory. You shouldn't need a loop though. Give half of your pieces one name and the other half another name and the pack sop should do what you want.