百度地圖軌跡回放,自定義路書,邊走邊畫線
在原有的百度路書的基礎上,作了修改,使其能實現邊走邊畫線的需求.javascript
源代碼以下,其中您的密鑰要換成本身的,若是不換,則須要粘貼到百度API示例裏面的GPS路書的編輯器中才能運行css
<html lang="en">
<head>
<meta charset="utf-8" />
<title>軌跡回放(路書)</title>
<style type="text/css">
body, html{width: 100%;height: 100%;margin:0;font-family:"微軟雅黑";}
#map_canvas{width:100%;height:500px;}
#result {width:100%}
</style>
<script src="http://api.map.baidu.com/api?v=2.0&ak=您的密鑰"></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">開始</button>
<button id="stop">中止</button>
<button id="pause">暫停</button>
<button id="hide">隱藏信息窗口</button>
<button id="show">展現信息窗口</button>
<script>
var marker;
var map = new BMap.Map('map_canvas');
map.enableScrollWheelZoom();
map.centerAndZoom();
var lushu;
// 實例化一個駕車導航用來生成路線
// 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 BMap.Point(116.322715,40.043764),new BMap.Point(116.322243,40.044202),new BMap.Point(116.322233,40.044222),new BMap.Point(116.321719,40.044821),new BMap.Point(116.321578,40.044983),new BMap.Point(116.320773,40.046077),new BMap.Point(116.320451,40.046673),new BMap.Point(116.319867,40.047743),new BMap.Point(116.319122,40.049116),new BMap.Point(116.31878,40.049552),new BMap.Point(116.317048,40.051744),new BMap.Point(116.316032,40.053022),new BMap.Point(116.315639,40.053519),new BMap.Point(116.313536,40.056347),new BMap.Point(116.313365,40.05658),new BMap.Point(116.313265,40.056712),new BMap.Point(116.313215,40.056783),new BMap.Point(116.313064,40.056985),new BMap.Point(116.31242,40.058037),new BMap.Point(116.311555,40.059442),new BMap.Point(116.311535,40.059473),new BMap.Point(116.311123,40.06015),new BMap.Point(116.311118,40.06015),new BMap.Point(116.311119,40.06048),new BMap.Point(116.310968,40.060772),new BMap.Point(116.310385,40.061943),new BMap.Point(116.310334,40.062044),new 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'})); //不畫線
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("粵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]; //點數組
var me = this,
//當前的幀數
currentCount = 0,
//步長，米/秒
timer = 10,
step = this._opts.speed / (1000 / timer),
//初始座標
init_pos = this._projection.lngLatToPoint(initPos),
//獲取結束點的(x,y)座標
target_pos = this._projection.lngLatToPoint(targetPos),
//總的步長
count = Math.round(me._getDistance(init_pos, target_pos) / step);
//顯示折線 syj201607191107
this._map.addOverlay(new BMap.Polyline(pointsArr, {
strokeColor : "#111",
strokeWeight : 5,
strokeOpacity : 0.5
})); // 畫線
//若是小於1直接移動到下一點
if (count < 1) {
me._moveNext(++me.i);
return;
}
me._intervalFlag = setInterval(function() {
//兩點之間當前幀數大於總幀數的時候，則說明已經完成移動
if (currentCount >= count) {
clearInterval(me._intervalFlag);
//移動的點已經超過總的長度
if(me.i > me._path.length){
return;
}
//運行下一個點
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));
//設置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);
}
}
}
//正在移動
me._marker.setPosition(pos);
//設置自定義overlay的位置
me._setInfoWin(pos);
}
},timer);
};
lushu = new BMapLib.LuShu(map,arrPois,{
defaultContent:"粵A30780",//"從天安門到百度大廈"
autoView:true,//是否開啓自動視野調整，若是開啓那麼路書在運動過程當中會根據視野自動調整
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,//是否設置marker隨着道路的走向進行旋轉
landmarkPois:[
{lng:116.306954,lat:40.05718,html:'加油站',pauseTime:2}
]
});
marker.addEventListener("click",function(){
marker.enableMassClear(); //設置後能夠隱藏改點的覆蓋物
marker.hide();
lushu.start();
//map.clearOverlays(); //清除全部覆蓋物
});
//}
// }
// });
//drv.search('天安門', '百度大廈');
// lushu.start();
// lushu.pause();
//綁定事件
$("run").onclick = function(){
marker.enableMassClear(); //設置後能夠隱藏改點的覆蓋物
marker.hide();
lushu.start();
// map.clearOverlays(); //清除全部覆蓋物
}
$("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的點是自定義點,很是適合作軌跡回放用.html
注意:landmarkPois 必需要定義,若是沒有要顯示的點話,就寫成[],不能爲空,不然會沒法運行.java
實現邊走邊畫線,首先將百度路書中的畫線代碼註釋掉,而後重寫_move方法,參見代碼中的重寫_move方法.基於此能夠實現更加複雜的各類附加信息.canvas
其效果以下圖:api
也算是給後人留點啓發吧數組
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