World A
Seeding...
coordinate invariants
Invariant Silhouette
Two seeded worlds. One three-lobe mouse mask. The coordinates can be reshuffled, but the filtered silhouette stays put if the mask is the thing that matters.
World B
Seeding...
The visible region is the signed-distance mask. Everything else is background noise. Seed changes reorder the sample clouds, but the accepted shape is the same invariant. The green gem is just there to stay suspiciously alive.