-
Notifications
You must be signed in to change notification settings - Fork 88
/
track.html
112 lines (92 loc) · 3.27 KB
/
track.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
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Hello, World</title>
<style type="text/css">
html{height:100%}
body{height:100%;margin:0px;padding:0px}
#container{height:100%;margin: 20px;}
</style>
<script type="text/javascript" src="http://api.map.baidu.com/api?v=1.5&ak=YWdGplhYjUGQ3GtpKNeuTM2S"></script>
</head>
<body>
<div id="container"></div>
<script type="text/javascript">
// 实时轨迹demo。
// 实际运用的话可能ajax实时读取后台数据,加载到地图上。
// 获取随机数
function getRandom(n){
return Math.floor(Math.random()*n+1)
}
//在轨迹点上创建图标,并添加点击事件,显示轨迹点信息。points,数组。
function addMarker(points){
var pointsLen = points.length;
if(pointsLen == 0){
return;
}
var myIcon = new BMap.Icon("track.ico", new BMap.Size(5, 5), {
offset: new BMap.Size(5, 5)
});
// 创建标注对象并添加到地图
for(var i = 0;i <pointsLen;i++){
var point = new BMap.Point(points[i].lng,points[i].lat);
var marker = new BMap.Marker(point, {icon: myIcon});
map.addOverlay(marker);
}
}
//添加线
function addLine(points){
var linePoints = [],pointsLen = points.length,i,polyline;
if(pointsLen == 0){
return;
}
// 创建标注对象并添加到地图
for(i = 0;i <pointsLen;i++){
linePoints.push(new BMap.Point(points[i].lng,points[i].lat));
}
polyline = new BMap.Polyline(linePoints, {strokeColor:"red", strokeWeight:2, strokeOpacity:0.5}); //创建折线
map.addOverlay(polyline); //增加折线
}
//随机生成新的点,加入到轨迹中。
function dynamicLine(){
var lng = 100+getRandom(40);
var lat = 35+getRandom(30);
var id = getRandom(1000);
var point = {"lng":lng,"lat":lat,"status":1,"id":id}
var makerPoints = [];
var newLinePoints = [];
var len;
makerPoints.push(point);
addMarker(makerPoints);//增加对应该的轨迹点
points.push(point);
bPoints.push(new BMap.Point(lng,lat));
len = points.length;
newLinePoints = points.slice(len-2, len);//最后两个点用来画线。
addLine(newLinePoints);//增加轨迹线
setZoom(bPoints);
setTimeout(dynamicLine, 1000);
}
//根据点信息实时更新地图显示范围,让轨迹完整显示。设置新的中心点和显示级别.
//更新。设置不是每次增加点都重新设置显示范围。因为有可能会想放大了看。
function setZoom(bPoints){
var view = map.getViewport(eval(bPoints));
if(map.oldView != JSON.stringify(view)){
var mapZoom = view.zoom;
var centerPoint = view.center;
map.centerAndZoom(centerPoint,mapZoom);
map.oldView = JSON.stringify(view);
}
}
//数据准备,
var points = [];//原始点信息数组
var bPoints = [];//百度化坐标数组。用于更新显示范围。
//地图操作开始
var map = new BMap.Map("container");
map.centerAndZoom(new BMap.Point(103.388611,35.563611), 5); //初始显示中国。
map.enableScrollWheelZoom();//滚轮放大缩小
setTimeout(dynamicLine, 1000);//动态生成新的点。
</script>
</body>
</html>