NwcIO v0.2.0

Major Additions & Capabilities

• Programmatic NWC Generation & Serializer (NwcWriter):
  • Full reverse-engineered serialization of Autodesk Navisworks #LcUStream containers and stream partitions from pure managed C#.
  • Binary partition serialization: PartitionHeader (source metadata, loader plugin, timestamp, options), SceneTree (hierarchy nodes, tags 52/53, property types), Transforms (poses, quaternion rotations, bounding boxes), Guids (16-byte raw identifier tables), Geometry chunk records (IEEE 754 float vertices, record tags), and Toc (Table of Contents record lengths and chunk sizes).
  • Built-in compression using managed ZLibStream producing valid, specification-compliant back-to-back zlib stream containers.
  • Saved viewpoint and 3D camera serialization (tag 517).
• Document Save & Fluent Builder API:
  • NwcDocument.Save(string path) and NwcDocument.Save(Stream stream) methods for direct file output.
  • NwcDocument.Create(...) factory method for creating documents from in-memory objects.
  • NwcDocumentBuilder fluent builder pattern for easily creating .nwc documents from code.
  • NwcDocument.Open(Stream stream) for loading Navisworks documents directly from arbitrary streams.
• CLI Enhancement (nwcio):
  • Added --nwc <output.nwc> option and automatic .nwc extension routing for converting, saving, and merging models and assemblies into .nwc files.
• Full Verification:
  • Comprehensive unit and integration test coverage verifying bit-level roundtripping (Create -> Save -> Open -> Verify) across synthetic models and real-world multi-discipline fixtures.