venue_layout_core 0.2.7

Deterministic portable venue layout geometry and scene protocol.

Venue layout core

Pure Dart immutable venue layout documents, geometry, validation, generators and deterministic scene paths shared by Flutter and JavaScript.

import 'package:venue_layout_core/venue_layout_core.dart';

final document = tableLayout(shape: 'ellipse', count: 6);
final issues = validateDocument(document);
final scene = compileScene(document, resources: fontResources);
final seat = hitTest(document, 400, 382);

Fonts are explicit resource snapshots containing glyph outlines, never runtime text fallback. The package has no Flutter, network, storage or booking dependencies. Geometry uses centered local boxes with clockwise rotations and immutable parent transforms. Serialize through toJson, decode with VenueLayoutDocument.fromJson, and validate before accepting a new document. Unsupported schemas throw UnsupportedLayoutSchema retaining the original data.

See repository doc/blueprint-v2/CORE-API.md for protocol 1 and additional operations. Run tests with dart test; the repository uses its FVM SDK for reproducibility.

Physical placement uses collisionIndexFor(document) for every obstacle kind: seats, tables, furniture and explicitly marked obstacles. Its immutable hulls, candidate queries and cache belong to the geometry module. Table/bar movement, chair reflow, automatic seat fitting and layoutCollisions share that owner. Groups contribute through their physical descendants; ordinary artwork remains decorative. LayoutSpatialIndex keeps precise rendered pointer hit areas. Both indices share the same internal spatial buckets; appearance work is paid only when rendered hit testing needs it. A new immutable document gets a new index.