function latticeSeed
lattice.ts:101
A seed folded down to the one 32-bit lane a lattice hash can carry.
All four lanes, not just a: a seed's lanes are independently derived, so
taking one of them would let two surfaces that differ only in b place every
crater in the same cell. The gradient noise in noise.ts takes seed.a
alone and predates this; it is left as it is because changing it would
regenerate every existing world, which is a version bump rather than a
cleanup.
- seedSeed
- Undocumented
Returnsnumber