-
Notifications
You must be signed in to change notification settings - Fork 494
/
custom_marker.dart
267 lines (223 loc) · 6.83 KB
/
custom_marker.dart
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
import 'dart:io';
import 'dart:math';
import 'package:flutter/material.dart';
import 'package:flutter/widgets.dart';
import 'package:mapbox_gl/mapbox_gl.dart';
import 'main.dart';
import 'page.dart';
const RANDOM_MARKER_NUM = 100;
class CustomMarker extends ExamplePage {
CustomMarker() : super(const Icon(Icons.place), 'Custom marker');
@override
Widget build(BuildContext context) {
return FullMap();
}
}
class FullMap extends StatefulWidget {
const FullMap();
@override
State createState() => FullMapState();
}
abstract class PositionChangeListener {
LatLng onPositionWillChange();
void onPositionChanged(Point point);
}
class FullMapState extends State<FullMap> {
final Random _rnd = new Random();
MapboxMapController _mapController;
List<Marker> _markers = [];
List<PositionChangeListener> _positionChangeListeners = [];
void _addPositionChangeListener(PositionChangeListener listener) {
_positionChangeListeners.add(listener);
}
void _onMapCreated(MapboxMapController controller) {
_mapController = controller;
controller.addListener(() {
if (controller.isCameraMoving) {
_updateMarkerPosition();
}
});
}
void _onStyleLoadedCallback() {
print('onStyleLoadedCallback');
}
void _onMapLongClickCallback(Point<double> point, LatLng coordinates) {
_addMarker(point, coordinates);
}
void _onCameraIdleCallback() {
_updateMarkerPosition();
}
void _updateMarkerPosition() {
var param = <LatLng>[];
for (final listner in _positionChangeListeners) {
param.add(listner.onPositionWillChange());
}
_mapController.toScreenLocationBatch(param).then((points){
for (final listner in _positionChangeListeners) {
param.add(listner.onPositionWillChange());
}
_positionChangeListeners.asMap().forEach((i, value){
final point = Point(points[i].x, points[i].y);
_positionChangeListeners[i].onPositionChanged(point);
});
});
}
void _addMarker(Point<double> point, LatLng coordinates) {
setState(() {
_markers.add(Marker(_rnd.nextInt(100000).toString(), coordinates, point, _addPositionChangeListener));
});
}
@override
Widget build(BuildContext context) {
return new Scaffold(
body: Stack(
children: [
MapboxMap(
accessToken: MapsDemo.ACCESS_TOKEN,
trackCameraPosition: true,
onMapCreated: _onMapCreated,
onMapLongClick: _onMapLongClickCallback,
onCameraIdle: _onCameraIdleCallback,
onStyleLoadedCallback: _onStyleLoadedCallback,
initialCameraPosition: const CameraPosition(target: LatLng(35.0, 135.0), zoom: 5),
),
IgnorePointer(
ignoring: true,
child:
Stack(
children: _markers,
)
)
]
),
floatingActionButton: FloatingActionButton(
onPressed: (){
//_measurePerformance();
// Generate random markers
var param = <LatLng>[];
for (var i = 0; i < RANDOM_MARKER_NUM; i++) {
final lat = _rnd.nextDouble() * 20 + 30;
final lng = _rnd.nextDouble() * 20 + 125;
param.add(LatLng(lat, lng));
}
_mapController.toScreenLocationBatch(param).then((value) {
for (var i = 0; i < RANDOM_MARKER_NUM; i++) {
var point = Point<double>(value[i].x, value[i].y);
_addMarker(point, param[i]);
}
});
},
child: Icon(Icons.add),
),
);
}
// ignore: unused_element
void _measurePerformance() {
final trial = 10;
final batches = [500, 1000, 1500, 2000, 2500, 3000];
var results = Map<int, List<double>>();
for (final batch in batches) {
results[batch] = [0.0, 0.0];
}
_mapController.toScreenLocation(LatLng(0, 0));
Stopwatch sw = Stopwatch();
for (final batch in batches) {
//
// primitive
//
for (var i = 0; i < trial; i++) {
sw.start();
var list = <Future<Point<num>>>[];
for (var j = 0; j < batch; j++) {
var p = _mapController.toScreenLocation(LatLng(j.toDouble() % 80, j.toDouble() % 300));
list.add(p);
}
Future.wait(list);
sw.stop();
results[batch][0] += sw.elapsedMilliseconds;
sw.reset();
}
//
// batch
//
for (var i = 0; i < trial; i++) {
sw.start();
var param = <LatLng>[];
for (var j = 0; j < batch; j++) {
param.add(LatLng(j.toDouble() % 80, j.toDouble() % 300));
}
Future.wait([_mapController.toScreenLocationBatch(param)]);
sw.stop();
results[batch][1] += sw.elapsedMilliseconds;
sw.reset();
}
print('batch=$batch,primitive=${results[batch][0] / trial}ms, batch=${results[batch][1] / trial}ms');
}
}
}
class Marker extends StatefulWidget {
final Point _initialPosition;
final LatLng _coordinate;
final void Function(PositionChangeListener) _addPositionChangeListener;
Marker(String key, this._coordinate, this._initialPosition, this._addPositionChangeListener) : super(key: Key(key));
@override
State<StatefulWidget> createState() {
final state = _MarkerState(_coordinate, _initialPosition);
_addPositionChangeListener(state);
return state;
}
}
class _MarkerState extends State with TickerProviderStateMixin, PositionChangeListener {
final _iconSize = 20.0;
final LatLng _coordinate;
Point _position;
AnimationController _controller;
Animation<double> _animation;
_MarkerState(this._coordinate, this._position);
@override
void initState() {
super.initState();
_controller = AnimationController(
duration: const Duration(seconds: 2),
vsync: this,
)..repeat(reverse: true);
_animation = CurvedAnimation(
parent: _controller,
curve: Curves.elasticOut,
);
}
@override
void dispose() {
_controller.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
var ratio = 1.0;
try {
ratio = Platform.isIOS ? 1.0 : MediaQuery.of(context).devicePixelRatio; //TODO: iOS returns lp
} catch (UnsupportedError) {
//web does not support Platform._operatingSystem
}; // ignore: empty_statements
return
Positioned(
left: _position.x / ratio - _iconSize / 2,
top: _position.y / ratio - _iconSize / 2,
child:
RotationTransition(
turns: _animation,
child:
Image.asset('assets/symbols/2.0x/custom-icon.png', height: _iconSize))
);
}
@override
void onPositionChanged(Point<num> point) {
setState(() {
_position = point;
});
}
@override
LatLng onPositionWillChange() {
return _coordinate;
}
}