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stress test to reproduce massive lag
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,239 @@ | ||
| import 'dart:math' as math; | ||
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| import 'package:flutter/foundation.dart'; | ||
| import 'package:flutter/material.dart'; | ||
| import 'package:flutter_map/flutter_map.dart'; | ||
| import 'package:flutter_map_example/misc/tile_providers.dart'; | ||
| import 'package:flutter_map_example/widgets/drawer/menu_drawer.dart'; | ||
| import 'package:flutter_map_example/widgets/show_no_web_perf_overlay_snackbar.dart'; | ||
| import 'package:flutter_map_example/widgets/simplification_tolerance_slider.dart'; | ||
| import 'package:latlong2/latlong.dart'; | ||
| import 'package:vector_math/vector_math_64.dart' as vec; | ||
|
|
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| class PolygonPerfStressAltPage extends StatefulWidget { | ||
| static const String route = '/polygon_perf_stress_alt'; | ||
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| const PolygonPerfStressAltPage({super.key}); | ||
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| @override | ||
| State<PolygonPerfStressAltPage> createState() => | ||
| _PolygonPerfStressAltPageState(); | ||
| } | ||
|
|
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| class _PolygonPerfStressAltPageState extends State<PolygonPerfStressAltPage> { | ||
| double simplificationTolerance = 0.33; | ||
| bool useAltRendering = false; | ||
| double borderThickness = 1; | ||
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|
||
| @override | ||
| void initState() { | ||
| super.initState(); | ||
| showNoWebPerfOverlaySnackbar(context); | ||
| } | ||
|
|
||
| @override | ||
| void dispose() { | ||
| super.dispose(); | ||
| } | ||
|
|
||
| @override | ||
| Widget build(BuildContext context) { | ||
| return Scaffold( | ||
| appBar: AppBar(title: const Text('Polygon Stress Test 2')), | ||
| drawer: const MenuDrawer(PolygonPerfStressAltPage.route), | ||
| body: Stack( | ||
| children: [ | ||
| FlutterMap( | ||
| options: MapOptions( | ||
| initialCameraFit: CameraFit.bounds( | ||
| bounds: LatLngBounds( | ||
| const LatLng(47, -120), | ||
| const LatLng(25, -90), | ||
| ), | ||
| padding: const EdgeInsets.only( | ||
| left: 16, | ||
| right: 16, | ||
| top: 145, | ||
| bottom: 175, | ||
| ), | ||
| ), | ||
| ), | ||
| children: [ | ||
| openStreetMapTileLayer, | ||
| PolygonsLayer( | ||
| simplificationTolerance: simplificationTolerance, | ||
| useAltRendering: useAltRendering), | ||
| ], | ||
| ), | ||
| Positioned( | ||
| left: 16, | ||
| top: 16, | ||
| right: 16, | ||
| child: RepaintBoundary( | ||
| child: Column( | ||
| children: [ | ||
| SimplificationToleranceSlider( | ||
| tolerance: simplificationTolerance, | ||
| onChanged: (v) => | ||
| setState(() => simplificationTolerance = v), | ||
| ), | ||
| const SizedBox(height: 12), | ||
| Wrap( | ||
| alignment: WrapAlignment.center, | ||
| spacing: 12, | ||
| runSpacing: 12, | ||
| children: [ | ||
| UnconstrainedBox( | ||
| child: Container( | ||
| decoration: BoxDecoration( | ||
| color: Theme.of(context).colorScheme.surface, | ||
| borderRadius: BorderRadius.circular(32), | ||
| ), | ||
| padding: const EdgeInsets.symmetric( | ||
| vertical: 4, | ||
| horizontal: 16, | ||
| ), | ||
| child: Row( | ||
| children: [ | ||
| const Tooltip( | ||
| message: 'Use Alternative Rendering Pathway', | ||
| child: Icon(Icons.speed_rounded), | ||
| ), | ||
| const SizedBox(width: 8), | ||
| Switch.adaptive( | ||
| value: useAltRendering, | ||
| onChanged: (v) => | ||
| setState(() => useAltRendering = v), | ||
| ), | ||
| ], | ||
| ), | ||
| ), | ||
| ), | ||
| // Not ideal that we have to re-parse the GeoJson every | ||
| // time this is changed, but the library gives no easy | ||
| // way to change it after | ||
| UnconstrainedBox( | ||
| child: Container( | ||
| decoration: BoxDecoration( | ||
| color: Theme.of(context).colorScheme.surface, | ||
| borderRadius: BorderRadius.circular(32), | ||
| ), | ||
| padding: const EdgeInsets.symmetric( | ||
| vertical: 8, | ||
| horizontal: 16, | ||
| ), | ||
| child: Wrap( | ||
| crossAxisAlignment: WrapCrossAlignment.center, | ||
| spacing: 6, | ||
| children: [ | ||
| const Tooltip( | ||
| message: 'Border Thickness', | ||
| child: Icon(Icons.line_weight_rounded), | ||
| ), | ||
| if (MediaQuery.devicePixelRatioOf(context) > 1 && | ||
| borderThickness == 1) | ||
| const Tooltip( | ||
| message: 'Screen has a high DPR: 1lp > 1dp', | ||
| child: Icon( | ||
| Icons.warning, | ||
| color: Colors.amber, | ||
| ), | ||
| ), | ||
| const SizedBox.shrink(), | ||
| ...List.generate( | ||
| 4, | ||
| (i) { | ||
| final thickness = i * i; | ||
| return ChoiceChip( | ||
| label: Text( | ||
| thickness == 0 | ||
| ? 'None' | ||
| : '${thickness}px', | ||
| ), | ||
| selected: borderThickness == thickness, | ||
| shape: const StadiumBorder(), | ||
| ); | ||
| }, | ||
| ), | ||
| ], | ||
| ), | ||
| ), | ||
| ), | ||
| ], | ||
| ), | ||
| ], | ||
| ), | ||
| ), | ||
| ), | ||
| if (!kIsWeb) | ||
| Positioned( | ||
| bottom: 16, | ||
| left: 0, | ||
| right: 0, | ||
| child: PerformanceOverlay.allEnabled(), | ||
| ), | ||
| ], | ||
| ), | ||
| ); | ||
| } | ||
| } | ||
|
|
||
| class PolygonsLayer extends StatelessWidget { | ||
| final bool useAltRendering; | ||
| final double simplificationTolerance; | ||
|
|
||
| const PolygonsLayer( | ||
| {super.key, | ||
| required this.useAltRendering, | ||
| required this.simplificationTolerance}); | ||
|
|
||
| @override | ||
| Widget build(BuildContext context) { | ||
| MapCamera mapCamera = MapCamera.maybeOf(context)!; | ||
| final polygons = [ | ||
| for (int y = 0; y < 70; y++) | ||
| for (int x = 0; x < 30; x++) | ||
| Polygon( | ||
| // Color per row (so 30 different colors) | ||
| borderColor: Color.fromARGB(255, 255, 0 + (x * 5), 0 + (x * 5)), | ||
| color: Color.fromRGBO(255, 0 + (x * 5), 0 + (x * 5), 0.075), | ||
| borderStrokeWidth: mapCamera.zoom * 0.15, | ||
| points: [ | ||
| // 31 segments per polygon | ||
| for (double rot = 0; rot < 360; rot += 360 / 31) | ||
| LatLng( | ||
| 47 + | ||
| (-x * 0.5) + | ||
| (math.sin(rot * vec.degrees2Radians) * 0.25), | ||
| -122 + | ||
| (y * 0.5) + | ||
| (math.cos(rot * vec.degrees2Radians) * 0.25)), | ||
| ]) | ||
| ]; | ||
|
|
||
| final polygonsOutline = [ | ||
| for (final poly in polygons) | ||
| Polygon( | ||
| points: poly.points, | ||
| borderColor: Colors.black, | ||
| borderStrokeWidth: mapCamera.zoom * 0.30), | ||
| ]; | ||
|
|
||
| return Stack( | ||
| children: [ | ||
| PolygonLayer( | ||
| polygonCulling: true, | ||
| polygons: polygonsOutline, | ||
| useAltRendering: useAltRendering, | ||
| simplificationTolerance: simplificationTolerance, | ||
| ), | ||
| PolygonLayer( | ||
| polygonCulling: true, | ||
| polygons: polygons, | ||
| useAltRendering: useAltRendering, | ||
| simplificationTolerance: simplificationTolerance, | ||
| ), | ||
| ], | ||
| ); | ||
| } | ||
| } |
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