v0.9.1

Changelog

Notable user-facing changes are recorded here. Versions follow Git tags and
the project uses semantic versioning while the public API remains pre-1.0.

Unreleased

0.9.1 - 2026-08-10

• Preserve door and window openings when triangulating walls with several coplanar holes.
• Apply glued component cutting contours to their host faces during Blender import.

Changed

• Blender imports build component meshes only when reachable instances need
  them, while repeated instances continue sharing cached mesh data.
• Blender imports can reuse component definition collections, avoiding
  expanded copies of deeply repeated component object hierarchies when enabled.
• Modern files collect attributes for dense geometry sections during their
  primary parse instead of scanning every vertex and edge a second time.
• Large CAD faces use bounded ear selection and triangle merging, avoiding
  cubic n-gon preparation on boundaries with hundreds of vertices and holes.

Fixed

• Imported Blender cameras use a far clipping plane of at least 100 km so
  large scenes remain visible through saved views.
• Visible loose SketchUp edges, including large imported 2D CAD drawings and
  line-only component definitions, are imported as Blender mesh edges.

v0.9.0

Changelog

Notable user-facing changes are recorded here. Versions follow Git tags and
the project uses semantic versioning while the public API remains pre-1.0.

0.9.0 - 2026-08-10

Changed

• Legacy-format documentation is organized as a concise overview plus focused
  container, class-schema, and field-layout references.
• Agent notes contain only durable public development guidance instead of
  historical session logs or machine-specific procedures.
• Documentation examples are executed by a strict Sphinx doctest gate in local
  builds and CI.

Fixed

• Blender collection instances preserve source parent transforms and instance
  offsets, deduplicate multi-linked objects, and serialize child definitions
  before their containers so official readers recognize the complete asset in
  modern and SketchUp Make 2017 exports.
• Blender mesh export marks an edge soft and smooth only when exactly two
  smooth-shaded faces share a non-sharp edge. Boundary, non-manifold, explicit
  sharp, and smooth/flat-transition edges now remain hard.

0.8.0 - 2026-07-19

Added

• Complete modern writer coverage for geometry, materials/PBR/textures, UVs,
  layers/folders, components/groups/images, annotations, cameras/scenes,
  environments, styles, watermarks, match-photo images, options, axes,
  rendering/shadow state, and typed attribute dictionaries.
• Blender export_scene.skp operator and File > Export UI with object scope,
  unit conversion, evaluated modifiers, reusable mesh definitions, collection
  instances, PBR/textures/UVs, tags, camera-marker scenes, text annotations,
  and scalar custom properties.
• Independent Python-to-C conformance catalog with 59 writer fixtures plus a
  Blender-generated export validated through the public SketchUp SDK.

Changed

• Writer unit tests compare generated data with independent raw bytes rather
  than using the parser as a round-trip oracle.
• The addon manifest and legacy bl_info now advertise bidirectional SKP IO.

Fixed

• Modern annotations without an explicit font now reference the required
  default font, preventing official-reader error 12.
• Annotation entity associations, nested instance paths, shadow state, font
  objects, scene snapshots, multiple environments, and graph identity checks
  are preserved during writing.

0.7.0 - 2026-07-16

Added

• Automatic, version-aware loading of SU3-SU2020 CArchive and SU2021 ZIP/TLV
  containers into one shared public model.
• Shared representations for text, dimensions, page backgrounds, relationship
  IDs, attribute ownership, rendering options, and layer display materials.
• Blender import for layer collections, construction geometry, annotations,
  saved scene cameras, PBR factors, UV projections, and edge shading, with
  responsive progress and cooperative cancellation.
• Generated compatibility validation for all 15 save targets, deterministic
  binary mutation coverage, and CI for Python 3.10-3.14 and Blender LTS/current.

Changed

• Legacy and modern parsers now populate the same data structures directly;
  archive-only state is limited to provenance and unresolved wire identities.
• Parser, mesh-preparation, scene-graph, triangulation, and Blender construction
  phases are split into focused modules with enforced complexity thresholds.
• Dense parsing uses indexed TLV/archive lookups and linear child tracking.
• Modern saved scenes preserve persistent IDs, cameras, repeated references,
  and version-aware metadata defaults.

Fixed

• Legacy and modern projected, positioned, mirrored, inherited, and two-sided
  UV mappings now follow SketchUp's observed material-side semantics.
• Material opacity respects its enable flag; image alpha, PBR factors, and
  dithered transparency are connected correctly in Blender.
• Modern inline layer materials, layer-folder membership, shadow country, scene
  identity, and section-display flags are preserved.
• Polygon reconstruction and triangulation reduce narrow triangles and preserve
  the minimum practical n-gon count, including faces with multiple holes.
• Invalid containers consistently raise InvalidSkpError while preserving the
  low-level cause; unsupported legacy schemas remain explicit.
• Metadata classification no longer truncates ordinary contributor names.

0.6.0 - 2026-06-30

Added

• NumPy-backed vectors, transforms, UV calculations, and image alpha checks.
• Blender edge smoothing and sharp-edge import controls.
• Single-hole n-gon reconstruction and improved triangulation quality.

Changed

• Parser logic and shared data structures were separated into dedicated
  modules without compatibility shims.
• Project documentation and quality checks became part of the release baseline.