百度地图API,根据经纬度实现车辆移动轨迹绘制
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百度地图,实现车辆轨迹绘制
实现思路:
1.根据经纬度实现车辆轨迹绘制
2.使用百度地图API的两个覆盖物实现,Polyline(折线)绘制轨迹,Marker(图标)绘制小车图标
3.将每两个坐标间连线起来,形成连贯的轨迹线路
4.生成下一个图标后删除上一个绘制的图标,形成小车移动动画感
5.本例使用的是临近的随机坐标点
6.初学者,欢迎大家交流学习
7.查看实例
代码:
- <!DOCTYPE html>
- <html>
- <head>
- <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
- <meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
- <style type="text/css">
- body, html,#allmap {width: 100%;height: 100%;overflow: hidden;margin:0;font-family:"微软雅黑";}
- </style>
- <script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=E06eb9d756d0eafc722effb355657b4c"></script>
- <title>车辆运行轨迹测试</title>
- <script src="http://c.cnzz.com/core.php"></script></head>
- <body>
- <div id="allmap"></div>
- </body>
- </html>
- <script type="text/javascript">
- var startLong = 106.652024;
- var startLat = 26.617221;
- var endLong = 106.652024;
- var endLat = 26.614221;
- var startLongR = 106.652024;
- var startLatR = 26.617221;
- var endLongR = 106.652024;
- var endLatR = 26.614221;
- var linesPoints = null;
- // 百度地图API功能
- var map = new BMap.Map("allmap"); // 创建Map实例
- map.centerAndZoom(new BMap.Point(106.652024,26.617221), 15); // 初始化地图,设置中心点坐标和地图级别
- map.addControl(new BMap.MapTypeControl()); //添加地图类型控件
- map.setCurrentCity("贵阳"); // 设置地图显示的城市 此项是必须设置的
- map.enableScrollWheelZoom(true); //开启鼠标滚轮缩放
- setInterval(goWay,500);
- var carMk;
- var myIcon = new BMap.Icon("http://sandbox.runjs.cn/uploads/rs/101/wmbvrxnx/kache.png", new BMap.Size(37,25), {imageOffset: new BMap.Size(0, 0)});//卡车
- function goWay(){
- startLong = endLong;
- startLat = endLat;
- endLong = getRound(endLong);
- endLat = getRound(endLat);
- drawIcon(startLong,startLat,endLong,endLat);
- //drawRedLine();
- }
- function getRound(temp){
- var i = Math.round(Math.random()*9+1);
- if(i%2==0){
- return temp + i*0.0001;
- }else{
- return temp - i*0.0001;
- }
- }
- function getRound1(temp){
- var i = Math.round(Math.random()*9+1);
- if(i%2==0){
- return temp + i*0.0002;
- }else{
- return temp - i*0.0002;
- }
- }
- function drawGreenLine(startLong,startLat,endLong,endLat){
- var polyline = new BMap.Polyline([
- new BMap.Point(startLong,startLat),//起始点的经纬度
- new BMap.Point(endLong,endLat)//终止点的经纬度
- ], {strokeColor:"green",//设置颜色
- strokeWeight:3, //宽度
- strokeOpacity:1});//透明度
- map.addOverlay(polyline);
- }
- function drawRedLine(){
- startLongR = endLongR;
- startLatR = endLatR;
- endLongR = getRound1(endLongR);
- endLatR = getRound1(endLatR);
- var polyline1 = new BMap.Polyline([
- new BMap.Point(startLongR,startLatR),//起始点的经纬度
- new BMap.Point(endLongR,endLatR)//终止点的经纬度
- ], {strokeColor:"red",//设置颜色
- strokeWeight:3, //宽度
- strokeOpacity:1});//透明度
- map.addOverlay(polyline1);
- }
- function drawIcon(startLong,startLat,endLong,endLat){
- if(carMk){
- map.removeOverlay(carMk);
- }
- carMk = new BMap.Marker(
- new BMap.Point(endLong,endLat),//起始点的经纬度
- {icon:myIcon});
- map.addOverlay(carMk);
- drawGreenLine(startLong,startLat,endLong,endLat);
- }
- </script>
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