discontinuedPackage jet_cad_floor_plan has been discontinued and replaced by jet_cad_2d_plan.

buildSymbolLibrary function

DraftDocument buildSymbolLibrary(List<FurnitureSymbol> catalog)

The document holding every symbol of catalog as a definition with its leaves (spec 14 V-3: any catalog, the furniture one or a host's). Deterministic: handles ascend in catalog order (a definition, then its leaves, then the next definition), so two builds encode to identical bytes. A servable symbol's definition also carries its SeatingComponent (spec 14 S2), set right after its SymbolComponent.

Leaves are BYBLOCK-friendly: layer 0, BYBLOCK linetype, ByBlockColor, lineweight and transparency BYBLOCK, no flag. A BYBLOCK lineweight resolves from the instance, whose own default is also BYBLOCK, which resolves from the document default; both values are on the loader's allow-list.

Implementation

DraftDocument buildSymbolLibrary(List<FurnitureSymbol> catalog) {
  final doc = DraftDocument.empty();
  registerAppComponents(doc.components);
  doc.header.units = DrawingUnits.millimeters;

  final commands = <DraftCommand>[];
  for (final s in catalog) {
    final def = doc.handleSeed.next();
    commands
      ..add(AddDefinitionCommand(Definition(
        handle: def,
        name: '${s.key}@${s.version}',
        basePoint: Vector2(s.baseX, s.baseY),
        children: const [],
      )))
      ..add(SetComponentCommand<SymbolComponent>(
        def,
        SymbolComponent(
          key: s.key,
          name: s.name,
          category: s.category,
          tags: s.tags,
          version: s.version,
        ),
      ));
    final seats = s.seats;
    if (seats != null) {
      commands.add(SetComponentCommand<SeatingComponent>(
          def, SeatingComponent(seats: seats)));
    }
    for (final shape in s.shapes) {
      commands.add(AddEntityCommand(
        record: EntityRecord(
          handle: doc.handleSeed.next(),
          owner: def,
          kind: shape.kind,
          layer: ReservedHandles.layerZero,
          linetype: ReservedHandles.byBlockLinetype,
          linetypeScale: 1.0,
          geomIndex: 0,
          color: const ByBlockColor(),
          lineweight: kByBlock,
          transparency: kByBlock,
          flags: 0,
        ),
        payload: shape.payload(),
      ));
    }
  }
  doc.commands.execute(CompoundCommand(commands, label: 'Furniture library'));
  doc.commands.clearHistory();
  return doc;
}