71 lines
2.2 KiB
Dart
71 lines
2.2 KiB
Dart
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import 'package:anyhow/anyhow.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter_map/flutter_map.dart';
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import 'package:freezed_annotation/freezed_annotation.dart';
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import 'package:geojson/geojson.dart';
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import 'package:latlong2/latlong.dart';
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part 'model.freezed.dart';
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@freezed
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class Feature with _$Feature {
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const Feature._();
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const factory Feature({
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required String name,
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required FeatureType type,
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String? description,
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required dynamic geometry,
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int? level,
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}) = _Feature;
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bool isPolygon() {
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return geometry is GeoJsonFeature<GeoJsonPolygon>;
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}
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bool isPoint() {
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return geometry is GeoJsonFeature<GeoJsonPoint>;
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}
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Result<Polygon> getPolygon({Polygon Function(List<LatLng>)? constructor}) {
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if (isPolygon()) {
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constructor ??= (pts) => Polygon(
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points: pts, borderColor: Colors.black26, borderStrokeWidth: 2.0);
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final polygon = geometry as GeoJsonFeature<GeoJsonPolygon>;
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// print(polygon.geometry!.geoSeries[0].geoPoints);
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final points = polygon.geometry!.geoSeries[0].geoPoints
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.map((e) => LatLng(e.latitude, e.longitude))
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.toList();
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// print(points);
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return Ok(constructor(points));
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} else {
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return bail("Feature Geometry is not a Polygon");
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}
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}
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Result<LatLng> getPoint() {
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if (isPoint()) {
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final point = geometry as GeoJsonFeature<GeoJsonPoint>;
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return Ok(LatLng(point.geometry!.geoPoint.latitude,
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point.geometry!.geoPoint.longitude));
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} else {
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return bail("Feature Geometry is not a Point");
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}
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}
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}
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@freezed
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class FeatureType with _$FeatureType {
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// multiple feature types like lecture hall, toliet, ...
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const factory FeatureType.building() = Building;
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const factory FeatureType.lectureHall() = LectureHall;
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const factory FeatureType.room() = Room;
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const factory FeatureType.door(List<String> connects) = Door;
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const factory FeatureType.toilet(String toilet_type) = Toilet;
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const factory FeatureType.stairs(List<int> connects_levels) = Stairs;
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const factory FeatureType.lift(List<int> connects_levels) = Lift;
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const factory FeatureType.publicTransport(
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List<String> bus_lines, List<String> tram_lines) = PublicTransport;
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}
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