使用百度地图api绘制车辆多点行驶路径

最新推荐文章于 2025-02-19 10:22:05 发布

转载最新推荐文章于 2025-02-19 10:22:05 发布 · 3.8k 阅读

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#JavaScript #百度地图

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本示例展示了如何使用百度地图API实现多个标注点沿预设的折线轨迹进行运动的效果。通过调用驾车路线规划接口获取路径点，并借助定时器控制标注点的移动，实现了动态展示车辆行驶过程的功能。

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示例代码：

<!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=您的密钥"></script>
	<title>多个标注点沿折线的轨迹运动</title>
</head>
<body>
	<div id="allmap"></div>
</body>
</html>
<script type="text/javascript">
	// 百度地图API功能
	var map = new BMap.Map("allmap");
	map.centerAndZoom(new BMap.Point(116.404, 39.915), 15);
	var bounds = null;
	var linesPoints = null;
	var spoi1 = new BMap.Point(116.380967,39.913285);    // 起点1
	var spoi2 = new BMap.Point(116.380967,39.953285);    // 起点2
	var epoi  = new BMap.Point(116.424374,39.914668);    // 终点
	var myIcon = new BMap.Icon("http://lbsyun.baidu.com/jsdemo/img/Mario.png", new BMap.Size(32, 70), {imageOffset: new BMap.Size(0, 0)});
	function initLine(){
		bounds = new Array();
		linesPoints = new Array();
		map.clearOverlays();                                                    // 清空覆盖物
		var driving3 = new BMap.DrivingRoute(map,{onSearchComplete:drawLine});  // 驾车实例,并设置回调
			driving3.search(spoi1, epoi);                                       // 搜索一条线路
		var driving4 = new BMap.DrivingRoute(map,{onSearchComplete:drawLine});  // 驾车实例,并设置回调
			driving4.search(spoi2, epoi);                                       // 搜索一条线路
	}
	function run(){
		for(var m = 0;m < linesPoints.length; m++){
			var pts = linesPoints[m];
			var len = pts.length;
			var carMk = new BMap.Marker(pts[0],{icon:myIcon});
			map.addOverlay(carMk);
			resetMkPoint(1,len,pts,carMk)
		}
		
		function resetMkPoint(i,len,pts,carMk){
			carMk.setPosition(pts[i]);
			if(i < len){
				setTimeout(function(){
					i++;
					resetMkPoint(i,len,pts,carMk);
				},100);
			}
		}
		
	}
	function drawLine(results){
		var opacity = 0.45;
		var planObj = results.getPlan(0);
		var b = new Array();
		var addMarkerFun = function(point,imgType,index,title){
			var url;
			var width;
			var height
			var myIcon;
			// imgType:1的场合，为起点和终点的图；2的场合为车的图形
			if(imgType == 1){
				url = "http://lbsyun.baidu.com/jsdemo/img/dest_markers.png";
				width = 42;
				height = 34;
				myIcon = new BMap.Icon(url,new BMap.Size(width, height),{offset: new BMap.Size(14, 32),imageOffset: new BMap.Size(0, 0 - index * height)});
			}else{
				url = "http://lbsyun.baidu.com/jsdemo/img/trans_icons.png";
				width = 22;
				height = 25;
				var d = 25;
				var cha = 0;
				var jia = 0
				if(index == 2){
					d = 21;
					cha = 5;
					jia = 1;
				}
				myIcon = new BMap.Icon(url,new BMap.Size(width, d),{offset: new BMap.Size(10, (11 + jia)),imageOffset: new BMap.Size(0, 0 - index * height - cha)});
			}
			
			var marker = new BMap.Marker(point, {icon: myIcon});
			if(title != null && title != ""){
				marker.setTitle(title);
			}
			// 起点和终点放在最上面
			if(imgType == 1){
				marker.setTop(true);
			}
			map.addOverlay(marker);
		}
		var addPoints = function(points){
			for(var i = 0; i < points.length; i++){
				bounds.push(points[i]);
				b.push(points[i]);
			}
		}	
		// 绘制驾车步行线路
		for (var i = 0; i < planObj.getNumRoutes(); i ++){
			var route = planObj.getRoute(i);
			if (route.getDistance(false) <= 0){continue;}
			addPoints(route.getPath());
			// 驾车线路
			if(route.getRouteType() == BMAP_ROUTE_TYPE_DRIVING){
				map.addOverlay(new BMap.Polyline(route.getPath(), {strokeColor: "#0030ff",strokeOpacity:opacity,strokeWeight:6,enableMassClear:true}));
			}else{
			// 步行线路有可能为0
				map.addOverlay(new BMap.Polyline(route.getPath(), {strokeColor: "#30a208",strokeOpacity:0.75,strokeWeight:4,enableMassClear:true}));
			}
		}	
		map.setViewport(bounds);	
		// 终点
		addMarkerFun(results.getEnd().point,1,1);
		// 开始点
		addMarkerFun(results.getStart().point,1,0);
		linesPoints[linesPoints.length] = b;
	}
	initLine();
	setTimeout(function(){
		run();
	},1500);
</script>

运行效果：