ReadonlyboundsThe posed root box, [minX, minY, minZ, maxX, maxY, maxZ].
Readonlynodesf32 nodes (64 bytes each), refit: their boxes are exact for the pose.
Readonlytriangles48-byte records with the posed corners (flags, ids and padding kept); null for an indexed tree, whose triangles name vertices and don't change.
A mesh tree refit to a new pose on the CPU (refitLayoutToPose).