百度地图电子围栏功能的实现

ゝ一纸荒年。 2023-02-24 11:28 24阅读 0赞

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyOTYzODQx_size_16_color_FFFFFF_t_70][]

判断在不在有效范围内：

直接上代码

<!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{width: 100%;height: 100%;margin:0;font-family:"微软雅黑";}
    	#allmap {width: 100%; height:500px; overflow: hidden;}
    	#result {width:100%;font-size:12px;}
    	dl,dt,dd,ul,li{
    		margin:0;
    		padding:0;
    		list-style:none;
    	}
    	p{font-size:12px;}
    	dt{
    		font-size:14px;
    		font-family:"微软雅黑";
    		font-weight:bold;
    		border-bottom:1px dotted #000;
    		padding:5px 0 5px 5px;
    		margin:5px 0;
    	}
    	dd{
    		padding:5px 0 0 5px;
    	}
    	li{
    		line-height:28px;
    	}
    	</style>
    	<script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=sSelQoVi2L3KofLo1HOobonW"></script>
    	
        <script type="text/javascript" src="http://api.map.baidu.com/library/DrawingManager/1.4/src/DrawingManager_min.js"></script>
       
    	<link rel="stylesheet" href="http://api.map.baidu.com/library/DrawingManager/1.4/src/DrawingManager_min.css" />
    	
    	<script type="text/javascript" src="http://api.map.baidu.com/library/SearchInfoWindow/1.4/src/SearchInfoWindow_min.js"></script>
    	<link rel="stylesheet" href="http://api.map.baidu.com/library/SearchInfoWindow/1.4/src/SearchInfoWindow_min.css" />
    	<title>鼠标绘制工具</title>
    </head>
    <body>
    	<div id="allmap" style="overflow:hidden;zoom:1;position:relative;">	
    		<div id="map" style="height:100%;-webkit-transition: all 0.5s ease-in-out;transition: all 0.5s ease-in-out;"></div>
    	</div>
    	<div id="result">
            <input type="button" value="获取绘制覆盖物个数" onclick="alert(overlays.length)"/>
            <input type="button" value="获取绘制覆盖物信息" onclick="getLayerInformation()">
            <input type="button" value="绘制多边形" onclick="drawPolygon()">
            <input type="button" value="清除所有覆盖物" onclick="clearAll()"/>
            <label for="">经度：</label> <input type="text" id="ILng" value="120.971601">
            <label for="">纬度：</label> <input type="text" id="ILat" value="31.502151">
    
    
    
    
            <input type="button" value="判断点是否在多边形内" onclick="IsInPolygon()">
        </div>  
    
    </body>
    </html>
    <script src="http://libs.baidu.com/jquery/2.1.4/jquery.min.js"></script>
    <script type="text/javascript" src="GeoUtils.js"></script>
    <script type="text/javascript">
    	// 百度地图API功能
        var map = new BMap.Map('map');
        var poi = new BMap.Point(120.983962,31.500796);
        map.centerAndZoom(poi, 16);
        map.enableScrollWheelZoom();  
        var overlays = [];
    	var overlaycomplete = function(e){
            overlays.push(e.overlay);
        };
    
        var styleOptions = {
            strokeColor:"red",    //边线颜色。
            fillColor:"red",      //填充颜色。当参数为空时，圆形将没有填充效果。
            strokeWeight: 3,       //边线的宽度，以像素为单位。
            strokeOpacity: 0.8,	   //边线透明度，取值范围0 - 1。
            fillOpacity: 0.6,      //填充的透明度，取值范围0 - 1。
            strokeStyle: 'solid' //边线的样式，solid或dashed。
        }
        //实例化鼠标绘制工具
        var drawingManager = new BMapLib.DrawingManager(map, {
            isOpen: false, //是否开启绘制模式
            enableDrawingTool: true, //是否显示工具栏
            drawingToolOptions: {
                anchor: BMAP_ANCHOR_TOP_RIGHT, //位置
                offset: new BMap.Size(5, 5), //偏离值
            },
            circleOptions: styleOptions, //圆的样式
            polylineOptions: styleOptions, //线的样式
            polygonOptions: styleOptions, //多边形的样式
            rectangleOptions: styleOptions //矩形的样式
        });  
    	 //添加鼠标绘制工具监听事件，用于获取绘制结果
        drawingManager.addEventListener('overlaycomplete', overlaycomplete);
        function clearAll() {
    
    		for(var i = 0; i < overlays.length; i++){
                map.removeOverlay(overlays[i]);
            }
            overlays.length = 0   
        }
    
        function getLayerInformation(){
            console.log(overlays[0].getPath());
        }
        let polygon;
    
    
    
    
        function drawPolygon(){
            let point = [
                {
                    lng:"120.971601",
                    lat:"31.502151"
                },
                {
                    lng:"120.96923",
                    lat:"31.496424"
                },
                {
                    lng:"120.976129",
                    lat:"31.495685"
                },
                {
                    lng:"120.977889",
                    lat:"31.499441"
                },
                {
                    lng:"120.974871",
                    lat:"31.501874"
                },
                {
                    lng:"120.971709",
                    lat:"31.502151"
                },
    
            ];
            let polArry = [];
            point.forEach(item => {
                let p = new BMap.Point(item.lng,item.lat);
                polArry.push(p);
            });
            polygon = new BMap.Polygon(polArry,styleOptions);
            map.addOverlay(polygon);
        }
    
        function IsInPolygon(){
            let lng = $("#ILng").val();
            let lat = $("#ILat").val();
            let point = new BMap.Point(lng,lat);
            let marker = new BMap.Marker(point);
            map.addOverlay(marker);
            if(BMapLib.GeoUtils.isPointInPolygon(point,polygon)){
                console.log("在区域内");
            }else{
                console.log("不再区域内");
            }
           
        }
    
    
        function getLayerInformation(){
            console.log(overlays[0].getPath());
        }
    
    /*
    
        function getLayerInformation(){
    
            console.log(overlays[0].getPath());
            let polArry = [];
            let pol = overlays[0].getPath();
            let t = 0.001;
            pol.forEach(item => {
                let point = new BMap.Point(item.lng + t,item.lat + t);
                polArry.push(point);
            });
           let polygon = new BMap.Polygon(polArry,styleOptions);
            map.addOverlay(polygon);
            alert(overlays[0]);
        }
    */
    
    
    </script>

ak我这边用的是我自己的，你拿去用也行吧

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyOTYzODQx_size_16_color_FFFFFF_t_70]: /images/20230209/27013d426b4a44c4adc21d1d7b08be0a.png