ifcviewer: rename sidecar transfer/record types; drop unused element hierarchy (sidecar v17)

Rename the streamer/sidecar transfer and record types to describe what
they are rather than how they move:

  MeshChunk         -> StreamedMesh
  InstanceChunk     -> StreamedInstance
  InstanceCpu       -> InstanceInfo
  PackedElementInfo -> ElementTableRecord
  uploadMeshChunk   -> uploadStreamedMesh
  uploadInstanceChunk -> uploadStreamedInstance
  buildMeshChunk    -> buildStreamedMesh

and the two post-index sidecar metadata blocks:

  "critical" metadata -> "geometry" metadata  (meshes/instances/georef/TOC)
  "deferred" metadata -> "element"  metadata  (elements + string table)
  parseSidecarCritical -> parseSidecarGeometryMetadata
  parseSidecarDeferred -> parseSidecarElementMetadata

The one behavioural change: the element hierarchy (parent_id) was
carried through ElementInfo, ElementTableRecord, and the sidecar element
table but never consumed, so drop it and bump SIDECAR_VERSION 16 -> 17.
No back-compat: regenerate sidecars. sample.ifcview is regenerated at v17.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Dion Moult
2026-07-03 19:26:31 +10:00
parent da5c0b7991
commit 66d558ec2d
30 changed files with 240 additions and 240 deletions
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