openskp 1.1.0

A pure Dart OpenSKP parser and writer - extract, create, and edit SketchUp (.skp) geometry, materials, and layers; export to GLB, OBJ, STL, PLY, DXF, and IFC4.

Changelog

1.1.0

• Write support — create() returns an SkpBuilder that assembles a legacy MFC CArchive-format .skp file: geometry (addFace, addCircle, addArc, addPolyline, including holes and non-coplanar auto-triangulation), solid-color and PNG/JPEG-textured materials, named layers, reusable component definitions with multiple positioned instances, groups, and custom key/value attribute dictionaries — then save(path)/toBytes() writes it out. No SketchUp SDK involved at any point.
• Edit support — openExisting(path) loads an existing legacy-format file, replays everything this package's own reader understood back through the writer API, and returns a builder more geometry can still be added to before saving.
• Ports the same feature set already shipped in the Python package this release, verified byte-identical to Python's own output on the same input and validated against the real SketchUp SDK.

1.0.0

• Added native Wavefront OBJ exporter (toObj/exportObj) plus a companion MTL material-library writer (toMtl), linked via mtllib and an exportMtl flag on exportObj.
• Added native STL exporter (toStlAscii/toStlBinary/exportStl), ASCII and little-endian binary, with an optional unit-scale multiplier.
• Added native PLY exporter (toPlyAscii/toPlyBinary/exportPly), ASCII and little-endian binary, carrying positions, normals, UVs, and RGBA vertex colors.
• Added native 3D DXF exporter (toDxf/exportDxf) targeting AutoCAD R2000 (AC1015) compliance, in both 3dface and AutoCAD Polyface Mesh (default) modes — verified opening cleanly in real desktop AutoCAD, not just lenient DXF readers.
• Added native IFC4 (BIM) exporter (toIfc/exportIfc) with full spatial hierarchy, tessellated geometry, element classification, dynamic properties, material colors, and layer preservation — validated with IfcOpenShell.

0.3.0

• Added buildScene() scene-baking API (Scene, MeshIndex, GlbPrimitive) for world-space, triangulated mesh outputs.
• Added binary glTF 2.0 (GLB) export functions (toGlb, exportGlb, toGlbBytes).
• Added canonical JSON export (toJson) matching cross-platform schema.
• Added meta/meta.dat units parsing (model.units).
• Added face UV transforms (uvTransform, uvTransformBack) and back-face material handling.
• Added layer, face, and instance hidden visibility flags (hidden).
• Added ZIP decompression-bomb size cap and recursion/cycle guard in scene baking.
• Routed internal debug/warning logs through ParseOptions.onLog callback.

0.2.0

• SketchUp 2025 support.
• Materials rendering support.
• Older SKP version fixes.
• Version bump to 0.2.0.

0.1.1

• Add comprehensive documentation and package installation details.

0.1.0

• Initial release of the OpenSKP Dart package.