在原有的百度路书的基础上,做了修改,使其能实现边走边画线的需求.
源代码如下,其中您的密钥要换成自己的,如果不换,则需要粘贴到百度API示例里面的GPS路书的编辑器中才能运行
<html lang="en">
<head>
<meta charset="utf-8" />
<title>轨迹回放(路书)</title>
<style type="text/css">
body, html{width: 100%;height: 100%;margin:0;font-family:"微软雅黑";}
#map_canvas{width:100%;height:500px;}
#result {width:100%}
</style>
<script src="http://api.map.baidu.com/api?v=2.0&ak=您的密钥"></script>
<script type="text/javascript" src="http://api.map.baidu.com/library/LuShu/1.2/src/LuShu_min.js"></script>
</head>
<body>
<div id="map_canvas"></div>
<div id="result"></div>
<button id="run">开始</button>
<button id="stop">停止</button>
<button id="pause">暂停</button>
<button id="hide">隐藏信息窗口</button>
<button id="show">展示信息窗口</button>
<script>
var marker;
var map = new BMap.Map(‘map_canvas‘);
map.enableScrollWheelZoom();
map.centerAndZoom();
var lushu;
// 实例化一个驾车导航用来生成路线
// var drv = new BMap.DrivingRoute(‘北京‘, {
// onSearchComplete: function(res) {
// if (drv.getStatus() == BMAP_STATUS_SUCCESS) {
// var plan = res.getPlan(0);
// var arrPois =[];
// for(var j=0;j<plan.getNumRoutes();j++){
// var route = plan.getRoute(j);
// arrPois= arrPois.concat(route.getPath());
// }
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BMap.Point(116.354628,40.028941),new BMap.Point(116.354219,40.028938),new BMap.Point(116.353571,40.028934),new BMap.Point(116.353062,40.028941),new BMap.Point(116.352872,40.02894),new BMap.Point(116.351874,40.028934),new BMap.Point(116.350277,40.028937),new BMap.Point(116.347059,40.028961),new BMap.Point(116.346519,40.028971),new BMap.Point(116.343748,40.028925),new BMap.Point(116.343718,40.028925),new BMap.Point(116.343608,40.028925),new BMap.Point(116.342968,40.028888),new BMap.Point(116.341516,40.028704),new BMap.Point(116.340915,40.028537),new BMap.Point(116.340184,40.028331),new BMap.Point(116.337588,40.02754),new BMap.Point(116.337585,40.027539),new BMap.Point(116.337244,40.027532),new BMap.Point(116.336974,40.027464),new BMap.Point(116.336522,40.027388),new BMap.Point(116.336201,40.027321),new BMap.Point(116.33576,40.027336),new BMap.Point(116.335309,40.02738),new BMap.Point(116.334907,40.027494),new BMap.Point(116.334445,40.027659),new BMap.Point(116.334405,40.027679),new BMap.Point(116.333823,40.027946),new BMap.Point(116.333311,40.028252),new BMap.Point(116.332839,40.028617),new BMap.Point(116.331713,40.029801),new BMap.Point(116.331711,40.0298),new BMap.Point(116.330726,40.031463),new BMap.Point(116.330585,40.031744),new BMap.Point(116.330071,40.032911),new BMap.Point(116.330021,40.033112),new BMap.Point(116.329437,40.035059),new BMap.Point(116.329245,40.035672),new BMap.Point(116.329165,40.035913),new BMap.Point(116.329084,40.036174),new BMap.Point(116.328984,40.036465),new BMap.Point(116.328943,40.036576),new BMap.Point(116.328802,40.037018),new BMap.Point(116.328209,40.038366),new BMap.Point(116.327716,40.039103),new BMap.Point(116.32685,40.040136),new BMap.Point(116.326659,40.040299),new BMap.Point(116.325231,40.041552),new BMap.Point(116.323168,40.043356),new BMap.Point(116.323047,40.043468),new BMap.Point(116.323017,40.043489),new BMap.Point(116.322937,40.04357),new BMap.Point(116.322806,40.043682),new BMap.Point(116.322756,40.043733),new 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BMap.Point(116.310103,40.062488),new BMap.Point(116.310063,40.062568),new BMap.Point(116.310033,40.062629),new BMap.Point(116.309309,40.064021),new BMap.Point(116.308897,40.064488),new BMap.Point(116.308555,40.064634),new BMap.Point(116.308375,40.064707),new BMap.Point(116.308244,40.064759),new BMap.Point(116.307963,40.064834),new BMap.Point(116.30756,40.064791),new BMap.Point(116.306866,40.064622),new BMap.Point(116.304856,40.064163),new BMap.Point(116.303499,40.063863),new BMap.Point(116.302966,40.06374),new BMap.Point(116.302856,40.063682),new BMap.Point(116.302854,40.063681),new BMap.Point(116.302995,40.063199),new BMap.Point(116.303979,40.060475),new BMap.Point(116.303989,40.060395),new BMap.Point(116.304079,40.060064),new BMap.Point(116.30432,40.05918),new BMap.Point(116.304501,40.058558),new BMap.Point(116.304521,40.058518),new BMap.Point(116.304662,40.058015),new BMap.Point(116.304933,40.057151),new BMap.Point(116.305194,40.056358),new BMap.Point(116.305235,40.056207),new BMap.Point(116.305325,40.055946),new BMap.Point(116.305566,40.055212),new BMap.Point(116.305647,40.054951),new BMap.Point(116.305747,40.05494),new BMap.Point(116.305717,40.05502),new BMap.Point(116.305717,40.055019),new BMap.Point(116.305647,40.05523),new BMap.Point(116.305416,40.055964),new BMap.Point(116.305295,40.056375),new BMap.Point(116.305034,40.057169),new BMap.Point(116.304773,40.058033),new BMap.Point(116.304772,40.058033),new BMap.Point(116.306491,40.058347),new BMap.Point(116.306492,40.058347),new BMap.Point(116.306914,40.05729),new BMap.Point(116.306954,40.05717),new BMap.Point(116.306954,40.05717),new BMap.Point(116.306974,40.057169)];
// map.addOverlay(new BMap.Polyline(arrPois, {strokeColor: ‘#111‘})); //不画线
map.setViewport(arrPois);
marker=new BMap.Marker(arrPois[0],{
icon : new BMap.Icon(‘http://developer.baidu.com/map/jsdemo/img/car.png‘, new BMap.Size(52,26),{anchor : new BMap.Size(27, 13)})
});
var label = new BMap.Label("粤A30780",{offset:new BMap.Size(0,-30)});
label.setStyle({border:"1px solid rgb(204, 204, 204)",color: "rgb(0, 0, 0)",borderRadius:"10px",padding:"5px",background:"rgb(255, 255, 255)",});
marker.setLabel(label);
map.addOverlay(marker);
BMapLib.LuShu.prototype._move=function(initPos,targetPos,effect) {
var pointsArr=[initPos,targetPos]; //点数组
var me = this,
//当前的帧数
currentCount = 0,
//步长，米/秒
timer = 10,
step = this._opts.speed / (1000 / timer),
//初始坐标
init_pos = this._projection.lngLatToPoint(initPos),
//获取结束点的(x,y)坐标
target_pos = this._projection.lngLatToPoint(targetPos),
//总的步长
count = Math.round(me._getDistance(init_pos, target_pos) / step);
//显示折线 syj201607191107
this._map.addOverlay(new BMap.Polyline(pointsArr, {
strokeColor : "#111",
strokeWeight : 5,
strokeOpacity : 0.5
})); // 画线
//如果小于1直接移动到下一点
if (count < 1) {
me._moveNext(++me.i);
return;
}
me._intervalFlag = setInterval(function() {
//两点之间当前帧数大于总帧数的时候，则说明已经完成移动
if (currentCount >= count) {
clearInterval(me._intervalFlag);
//移动的点已经超过总的长度
if(me.i > me._path.length){
return;
}
//运行下一个点
me._moveNext(++me.i);
}else {
currentCount++;
var x = effect(init_pos.x, target_pos.x, currentCount, count),
y = effect(init_pos.y, target_pos.y, currentCount, count),
pos = me._projection.pointToLngLat(new BMap.Pixel(x, y));
//设置marker
if(currentCount == 1){
var proPos = null;
if(me.i - 1 >= 0){
proPos = me._path[me.i - 1];
}
if(me._opts.enableRotation == true){
me.setRotation(proPos,initPos,targetPos);
}
if(me._opts.autoView){
if(!me._map.getBounds().containsPoint(pos)){
me._map.setCenter(pos);
}
}
}
//正在移动
me._marker.setPosition(pos);
//设置自定义overlay的位置
me._setInfoWin(pos);
}
},timer);
};
lushu = new BMapLib.LuShu(map,arrPois,{
defaultContent:"粤A30780",//"从天安门到百度大厦"
autoView:true,//是否开启自动视野调整，如果开启那么路书在运动过程中会根据视野自动调整
icon : new BMap.Icon(‘http://developer.baidu.com/map/jsdemo/img/car.png‘, new BMap.Size(52,26),{anchor : new BMap.Size(27, 13)}),
speed: 4500,
enableRotation:true,//是否设置marker随着道路的走向进行旋转
landmarkPois:[
{lng:116.306954,lat:40.05718,html:‘加油站‘,pauseTime:2}
]
});
marker.addEventListener("click",function(){
marker.enableMassClear(); //设置后可以隐藏改点的覆盖物
marker.hide();
lushu.start();
//map.clearOverlays(); //清除所有覆盖物
});
//}
// }
// });
//drv.search(‘天安门‘, ‘百度大厦‘);
// lushu.start();
// lushu.pause();
//绑定事件
$("run").onclick = function(){
marker.enableMassClear(); //设置后可以隐藏改点的覆盖物
marker.hide();
lushu.start();
// map.clearOverlays(); //清除所有覆盖物
}
$("stop").onclick = function(){
lushu.stop();
}
$("pause").onclick = function(){
lushu.pause();
}
$("hide").onclick = function(){
lushu.hideInfoWindow();
}
$("show").onclick = function(){
lushu.showInfoWindow();
}
function $(element){
return document.getElementById(element);
}
</script>
</body>
</html>
其中,arrPois的点是自定义点,非常适合做轨迹回放用.
注意:landmarkPois 必须要定义,如果没有要显示的点话,就写成[],不能为空,否则会无法运行.
实现边走边画线,首先将百度路书中的画线代码注释掉,然后重写_move方法,参见代码中的重写_move方法.基于此可以实现更加复杂的各种附加信息.
其效果如下图:
也算是给后人留点启发吧
时间： 2024-10-08 14:25:35