readSplatPly

function readSplatPly(buffer: ArrayBuffer): SplatData

import { readSplatPly } from '@driftengine/splats';

Parameters

In depth

The encodings are the whole of this function's risk. Scale is stored as its logarithm and opacity as its logit, so both are undone here — and here only, because packSplats documents that it takes linear values. Getting the boundary wrong produces a capture that is either invisible or a solid block, and both have been reported against other viewers as rendering bugs.

The file stores rotation as wxyz — rot_0 is the real part — and SplatSource takes xyzw, so the reorder happens here for the same reason it happens in the .splat reader.