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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| import 'dart:convert'; | ||
|
|
||
| import 'package:eqmonitor/schema/local/prefecture/map_polygon.dart'; | ||
| import 'package:flutter/cupertino.dart'; | ||
| import 'package:flutter/services.dart'; | ||
| import 'package:geojson/geojson.dart'; | ||
| import 'package:hooks_riverpod/hooks_riverpod.dart'; | ||
| import 'package:logger/logger.dart'; | ||
|
|
||
| import '../../utils/map/map_global_offset.dart'; | ||
|
|
||
| /// 市町村等(地震津波関係) | ||
| final mapAreaInformationCityQuakeProvider = | ||
| Provider<List<MapAreaInformationCityQuakePolygon>>((ref) { | ||
| throw UnimplementedError(); | ||
| }); | ||
|
|
||
| class MapAreaInformationCityQuakePolygon extends MapPolygon { | ||
| const MapAreaInformationCityQuakePolygon({ | ||
| required super.code, | ||
| required super.name, | ||
| required super.path, | ||
| required super.points, | ||
| required this.regionname, | ||
| }); | ||
|
|
||
| final String regionname; | ||
| } | ||
|
|
||
| Future<List<MapAreaInformationCityQuakePolygon>> | ||
| loadMapAreaInformationCityQuake() async { | ||
| final stopwatch = Stopwatch()..start(); | ||
| final geo = GeoJson(); | ||
| final logger = Logger(); | ||
|
|
||
| final mapPaths = <MapAreaInformationCityQuakePolygon>[]; | ||
|
|
||
| geo.processedFeatures.listen((feature) { | ||
| if (feature.type == GeoJsonFeatureType.multipolygon) { | ||
| final geometry = feature.geometry as GeoJsonMultiPolygon; | ||
| for (final polygon in geometry.polygons) { | ||
| for (final geoSeries in polygon.geoSeries) { | ||
| if (feature.properties!['regioncode'] == null) { | ||
| continue; | ||
| } | ||
| final tmpPoints = <Offset>[]; | ||
| for (final geoPoint in geoSeries.geoPoints) { | ||
| final offset = MapGlobalOffset.latLonToGlobalPoint(geoPoint.point) | ||
| .toLocalOffset(const Size(476, 927.4)); | ||
| tmpPoints.add(offset); | ||
| } | ||
| mapPaths.add( | ||
| MapAreaInformationCityQuakePolygon( | ||
| code: int.parse(feature.properties!['regioncode'].toString()), | ||
| name: feature.properties!['name'].toString(), | ||
| path: Path()..addPolygon(tmpPoints, true), | ||
| points: tmpPoints, | ||
| regionname: feature.properties!['regionname'].toString(), | ||
| ), | ||
| ); | ||
| } | ||
| } | ||
| } else if (feature.type == GeoJsonFeatureType.polygon) { | ||
| final geometry = feature.geometry as GeoJsonPolygon; | ||
| for (final geoSeries in geometry.geoSeries) { | ||
| if (feature.properties!['regioncode'] == null) { | ||
| continue; | ||
| } | ||
| final tmpPoints = <Offset>[]; | ||
| for (final geoPoint in geoSeries.geoPoints) { | ||
| final offset = MapGlobalOffset.latLonToGlobalPoint(geoPoint.point) | ||
| .toLocalOffset(const Size(476, 927.4)); | ||
| tmpPoints.add(offset); | ||
| } | ||
| mapPaths.add( | ||
| MapAreaInformationCityQuakePolygon( | ||
| code: int.parse(feature.properties!['regioncode'].toString()), | ||
| name: feature.properties!['name'].toString(), | ||
| path: Path()..addPolygon(tmpPoints, true), | ||
| points: tmpPoints, | ||
| regionname: feature.properties!['regionname'].toString(), | ||
| ), | ||
| ); | ||
| } | ||
| } | ||
| }); | ||
| geo.endSignal.listen((_) { | ||
| stopwatch.stop(); | ||
| logger.i( | ||
| 'mapAreaInformationCityQuakeを読み込みました: ' | ||
| '${stopwatch.elapsedMicroseconds / 1000}ms\n' | ||
| '読み込んだ数: ${mapPaths.length}', | ||
| ); | ||
| }); | ||
| await geo.parse( | ||
| utf8.decode( | ||
| (await rootBundle.load('assets/maps/AreaInformationCityQuake.json')) | ||
| .buffer | ||
| .asUint8List(), | ||
| ), | ||
| ); | ||
| return mapPaths; | ||
| } |
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