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https://github.com/FoggedLens/deflock-app.git
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78 lines
2.1 KiB
Dart
78 lines
2.1 KiB
Dart
import 'package:latlong2/latlong.dart';
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class OsmNode {
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final int id;
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final LatLng coord;
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final Map<String, String> tags;
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OsmNode({
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required this.id,
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required this.coord,
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required this.tags,
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});
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Map<String, dynamic> toJson() => {
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'id': id,
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'lat': coord.latitude,
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'lon': coord.longitude,
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'tags': tags,
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};
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factory OsmNode.fromJson(Map<String, dynamic> json) {
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final tags = <String, String>{};
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if (json['tags'] != null) {
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(json['tags'] as Map<String, dynamic>).forEach((k, v) {
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tags[k.toString()] = v.toString();
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});
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}
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return OsmNode(
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id: json['id'] is int ? json['id'] as int : int.tryParse(json['id'].toString()) ?? 0,
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coord: LatLng((json['lat'] as num).toDouble(), (json['lon'] as num).toDouble()),
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tags: tags,
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);
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}
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bool get hasDirection => directionDeg.isNotEmpty;
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List<double> get directionDeg {
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final raw = tags['direction'] ?? tags['camera:direction'];
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if (raw == null) return [];
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// Compass direction to degree mapping
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const compassDirections = {
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'N': 0.0, 'NNE': 22.5, 'NE': 45.0, 'ENE': 67.5,
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'E': 90.0, 'ESE': 112.5, 'SE': 135.0, 'SSE': 157.5,
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'S': 180.0, 'SSW': 202.5, 'SW': 225.0, 'WSW': 247.5,
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'W': 270.0, 'WNW': 292.5, 'NW': 315.0, 'NNW': 337.5,
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};
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// Split on semicolons and parse each direction
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final directions = <double>[];
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final parts = raw.split(';');
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for (final part in parts) {
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final trimmed = part.trim().toUpperCase();
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if (trimmed.isEmpty) continue;
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// First try compass direction lookup
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if (compassDirections.containsKey(trimmed)) {
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directions.add(compassDirections[trimmed]!);
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continue;
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}
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// Then try numeric parsing
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final match = RegExp(r'[-+]?\d*\.?\d+').firstMatch(trimmed);
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if (match == null) continue;
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final numStr = match.group(0);
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final val = double.tryParse(numStr ?? '');
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if (val == null) continue;
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// Normalize: wrap negative or >360 into 0‑359 range
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final normalized = ((val % 360) + 360) % 360;
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directions.add(normalized);
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}
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return directions;
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}
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} |