Construct the canonical "no visible lines at this slice" payload. Mirrors createEmptyPointsData in points/projection.ts and createEmptyGSplatsData in gsplats/projection.ts.
createEmptyPointsData
points/projection.ts
createEmptyGSplatsData
gsplats/projection.ts
Construct the canonical "no visible lines at this slice" payload. Mirrors
createEmptyPointsDatainpoints/projection.tsandcreateEmptyGSplatsDataingsplats/projection.ts.