地圖軌跡回放
<!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>Track</title> <style type="text/css"> html{height:100%} body{height:100%;margin:0px;padding:0px} #controller{width:100%; border-bottom:3px outset; height:30px; filter:alpha(Opacity=100); -moz-opacity:1; opacity:1; z-index:10000; background-color:lightblue;} #container{height:100%} </style> <script type="text/javascript" src="http://api.map.baidu.com/api?v=1.5&ak=D2b4558ebed15e52558c6a766c35ee73"></script> <script type="text/javascript"> //获取所有点的坐标 var points = [ new BMap.Point(113.443454,22.356331), new BMap.Point(113.454682,22.370929) ]; var map; //百度地图对象 var car; //汽车图标 var label; //信息标签 var centerPoint; var timer; //定时器 var index = 0; //记录播放到第几个point var followChk, playBtn, pauseBtn, resetBtn; //几个控制按钮 function init() { followChk = document.getElementById("follow"); playBtn = document.getElementById("play"); pauseBtn = document.getElementById("pause"); resetBtn = document.getElementById("reset"); //初始化地图,选取第一个点为起始点 map = new BMap.Map("container"); map.centerAndZoom(points[0], 15); map.enableScrollWheelZoom(); map.addControl(new BMap.NavigationControl()); map.addControl(new BMap.ScaleControl()); map.addControl(new BMap.OverviewMapControl({isOpen: true})); //通过DrivingRoute获取一条路线的point var driving = new BMap.DrivingRoute(map); driving.search(new BMap.Point(113.443454,22.356331),new BMap.Point(113.454682,22.370929) ); driving.setSearchCompleteCallback(function() { //得到路线上的所有point points = driving.getResults().getPlan(0).getRoute(0).getPath(); //画面移动到起点和终点的中间 centerPoint = new BMap.Point((points[0].lng + points[points.length - 1].lng) / 2, (points[0].lat + points[points.length - 1].lat) / 2); map.panTo(centerPoint); //连接所有点 map.addOverlay(new BMap.Polyline(points, {strokeColor: "black", strokeWeight: 5, strokeOpacity: 1})); //显示小车子 label = new BMap.Label("", {offset: new BMap.Size(-20, -20)}); car = new BMap.Marker(points[0]); car.setLabel(label); map.addOverlay(car); //点亮操作按钮 playBtn.disabled = false; resetBtn.disabled = false; }); } function play() { playBtn.disabled = true; pauseBtn.disabled = false; var point = points[index]; if(index > 0) { map.addOverlay(new BMap.Polyline([points[index - 1], point], {strokeColor: "red", strokeWeight: 1, strokeOpacity: 1})); } label.setContent("经度: " + point.lng + "<br>纬度: " + point.lat); car.setPosition(point); index++; if(followChk.checked) { map.panTo(point); } if(index < points.length) { timer = window.setTimeout("play(" + index + ")", 200); } else { playBtn.disabled = true; pauseBtn.disabled = true; map.panTo(point); } } function pause() { playBtn.disabled = false; pauseBtn.disabled = true; if(timer) { window.clearTimeout(timer); } } function reset() { followChk.checked = false; playBtn.disabled = false; pauseBtn.disabled = true; if(timer) { window.clearTimeout(timer); } index = 0; car.setPosition(points[0]); map.panTo(centerPoint); } </script> </head> <body onload="init();"> <div id="controller" align="center"> <input id="follow" type="checkbox"><span style="font-size:12px;">画面跟随</span></input> <input id="play" type="button" value="播放" onclick="play();" disabled /> <input id="pause" type="button" value="暂停" onclick="pause();" disabled /> <input id="reset" type="button" value="重置" onclick="reset()" disabled /> </div> <div id="container"></div> </body> </html>
百度地圖經緯度拾取：http://api.map.baidu.com/lbsapi/getpoint/index.html
