-
Notifications
You must be signed in to change notification settings - Fork 447
/
Animate a Line.html
158 lines (130 loc) · 5.98 KB
/
Animate a Line.html
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
<!DOCTYPE html>
<html lang="en">
<head>
<title>Animate a Line - Azure Maps Web SDK Samples</title>
<meta charset="utf-8" />
<link rel="shortcut icon" href="/favicon.ico"/>
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no" />
<meta name="description" content="This sample shows how to animate the position of a line on the map by updating its coordinates and layer." />
<meta name="keywords" content="Microsoft maps, map, gis, API, SDK, animate, animation, line, linestring, polyline" />
<meta name="author" content="Microsoft Azure Maps" /><meta name="version" content="1.0" />
<meta name="screenshot" content="screenshot.gif" />
<!-- Add references to the Azure Maps Map control JavaScript and CSS files. -->
<link href="https://atlas.microsoft.com/sdk/javascript/mapcontrol/3/atlas.min.css" rel="stylesheet" />
<script src="https://atlas.microsoft.com/sdk/javascript/mapcontrol/3/atlas.min.js"></script>
<script>
var map, datasource, line;
var speedFactor = 30; //The number of frames per longitude degree.
var animation;
var startTime = 0;
var progress = 0; //Progress = timestamp - startTime
var resetTime = false; //Indicates if the animation time needs to be reset.
var pauseButton = document.getElementById('pause');
function getMap() {
//Initialize a map instance.
map = new atlas.Map('myMap', {
view: 'Auto',
//Add authentication details for connecting to Azure Maps.
authOptions: {
//Use Microsoft Entra ID authentication.
authType: 'anonymous',
clientId: 'e6b6ab59-eb5d-4d25-aa57-581135b927f0', //Your Azure Maps client id for accessing your Azure Maps account.
getToken: function (resolve, reject, map) {
//URL to your authentication service that retrieves an Microsoft Entra ID Token.
var tokenServiceUrl = 'https://samples.azuremaps.com/api/GetAzureMapsToken';
fetch(tokenServiceUrl).then(r => r.text()).then(token => resolve(token));
}
//Alternatively, use an Azure Maps key. Get an Azure Maps key at https://azure.com/maps. NOTE: The primary key should be used as the key.
//authType: 'subscriptionKey',
//subscriptionKey: '[YOUR_AZURE_MAPS_KEY]'
}
});
//Wait until the map resources are ready.
map.events.add('ready', function () {
//Create a data source and add it to the map.
datasource = new atlas.source.DataSource();
map.sources.add(datasource);
//Create a layer that defines how to render the line on the map.
map.layers.add(new atlas.layer.LineLayer(datasource, null, {
strokeColor: 'red',
strokeWidth: 5
}));
//Create a line object and wrap it with the Shape class for easier updating.
line = new atlas.Shape(new atlas.data.Feature(new atlas.data.LineString([[0, 0], [0, 0]])));
datasource.add(line);
startTime = performance.now();
//Start the animation.
animateLine();
var pauseButton = document.getElementById('pause');
pauseButton.addEventListener('click', function () {
pauseButton.classList.toggle('pause');
if (pauseButton.classList.contains('pause')) {
cancelAnimationFrame(animation);
} else {
resetTime = true;
animateLine();
}
});
//If the browser tab gains/losses focus, reset startTime and progress, and pause requestAnimationFrame.
document.addEventListener('visibilitychange', function () {
resetTime = true;
});
});
}
function animateLine(timestamp) {
if (resetTime) {
//Resume previous progress.
startTime = performance.now() - progress;
resetTime = false;
} else if (timestamp) {
progress = timestamp - startTime;
} else {
progress = 0;
}
//Restart if it finishes a loop.
if (progress > speedFactor * 360) {
startTime = timestamp;
line.setCoordinates([[0, 0], [0, 0]]);
} else {
var x = progress / speedFactor;
//Draw a sine wave with some math.
var y = Math.sin(x * Math.PI / 90) * 40;
//Append new coordinates to the line.
var coords = line.getCoordinates();
coords.push([x, y]);
//Update the line on the map.
line.setCoordinates(coords);
}
// Request the next frame of the animation.
animation = requestAnimationFrame(animateLine);
}
</script>
<style>
#myMap {
position: relative;
width: 100%;
min-width:290px;
height: 600px;
}
#pause {
position: absolute;
top: 20PX;
left: 20PX;
}
#pause::after {
content: 'Pause';
}
#pause.pause::after {
content: 'Play';
}
</style>
</head>
<body onload='getMap()'>
<div id='myMap'></div>
<button id="pause">pause</button>
<fieldset style="width:calc(100% - 30px);min-width:290px;margin-top:10px;">
<legend>Animate a Line</legend>
This sample shows how to animate the position of a line on the map by appending coordinates to it over time.
</fieldset>
</body>
</html>