<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:"微軟雅黑";}
</style>
<script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=你自己的AK"></script>
<title>百度地圖利用DrivingRoute做軌跡回放</title>
</head>
<body>
<div id="allmap"></div>
</body>
</html>
<script type="text/javascript">
// 百度地圖API功能
var map = new BMap.Map("allmap"); // 創建Map實例
map.centerAndZoom("哈爾濱",15); // 初始化地圖,用城市名設置地圖中心點
map.setMapStyle({ //可以自己定義地圖底圖 http://developer.baidu.com/map/custom/
styleJson:[
{
"featureType": "water",
"elementType": "all",
"stylers": {
"color": "#72b8fe"
}
},
{
"featureType": "road",
"elementType": "geometry.fill",
"stylers": {
"color": "#ffffff"
}
},
{
"featureType": "road",
"elementType": "geometry.stroke",
"stylers": {
"color": "#bababa"
}
},
{
"featureType": "road",
"elementType": "labels.text.fill",
"stylers": {
"color": "#767676"
}
},
{
"featureType": "road",
"elementType": "labels.text.stroke",
"stylers": {
"color": "#ffffff"
}
},
{
"featureType": "land",
"elementType": "all",
"stylers": {
"color": "#b8cb93"
}
}
]
});
map.addControl(new BMap.NavigationControl());
map.addControl(new BMap.ScaleControl({anchor: BMAP_ANCHOR_TOP_LEFT}));
map.enableScrollWheelZoom(true);
var pts = [
new BMap.Point(126.618398,45.721217),
new BMap.Point(126.62081,45.713008),
new BMap.Point(126.654694,45.732086),
new BMap.Point(126.675481,45.738471)
];
var polyline ;
var options = {
onSearchComplete: function(results){
if (driving.getStatus() == BMAP_STATUS_SUCCESS){
// 獲取第一條方案
var plan = results.getPlan(0);
// 獲取方案的駕車線路
var route = plan.getRoute(0);
//返回路線的地理座標點數組。（自 1.2 新增）
var points = route.getPath();
polyline = new BMap.Polyline(points);
//alert(points.length);
map.addOverlay(polyline); //增加折線
}
}
//,
//renderOptions:{map: map, autoViewport: true}
};
var driving = new BMap.DrivingRoute(map, options);
i=0;
function playLine(i){
if(i==0){//第一個點 直接添加
var marker = new BMap.Marker(pts[i]); // 創建標註
map.addOverlay(marker);
marker.setLabel(new BMap.Label("我是第"+(i+1)+"個點",{offset:new BMap.Size(20,-10)}));
map.panTo(pts[i]);
i++;
setTimeout(function(){
playLine(i);
},2000)
}else{//獲取PolyLine並添加 添加點
if(i<=pts.length){
driving.search(pts[i-1], pts[i]);
map.addOverlay(polyline);
var marker = new BMap.Marker(pts[i]); // 創建標註
map.addOverlay(marker);
marker.setLabel(new BMap.Label("我是第"+(i+1)+"個點",{offset:new BMap.Size(20,-10)}));
map.panTo(pts[i]);
i++;
setTimeout(function(){
playLine(i);
},2000)
}
}
}
playLine(i);
</script>需求：手機上報的GPS座標，需要在網頁上做動態路徑回放
問題：直接用上報的GPS座標構造PolyLine，與實際路徑差別太大。
解決辦法：利用DrivingRoute獲取到兩個座標點直接的優化路徑。
補充說明：此DEMO沒有做大數據量的測試。僅提供思路以供參考。
