const ROCK_PIXELS: 2
How many pixels the smallest rock has to cover to be worth drawing.
Two. Below that an instanced blob is an aliasing point sample of one — it flickers as the camera moves and contributes nothing a slightly rougher normal would not — and the whole population past that distance is thousands of draws for a dusting of noise.
Exported because the streamer applies the same figure per rock — the range sizes the disk of regions and the per-rock cut thins the population inside it, and two spellings of the threshold is a disk sized for a field the cut no longer draws.
scatterSelect.ts:86