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注意:
1.百度地图ak换成自己在百度地图官网申请
2.建议使用firefox浏览器,google被墙无法调用gps
3.发布到服务器必须使用https,对于localhost和本地测试不用
4.电脑开启位置服务,手机打开gps定位
5.百度地图坐标和gps坐标不一致,要在百度地图正确显示位置必须把gps坐标转为百度坐标
6.多边形范围绘制页面:https://www.idaobin.com/archives/2267.html
7.百度地图判断当前位置是否在一个多边形范围里面:https://www.idaobin.com/archives/2275.html
设计:
将该表转为json数组
sql语句:
select carid,adress,place from T_Car where carid='司机1';
json数组:
[{"adress":"[{\"lng\":102.368698,\"lat\":25.614778},{\"lng\":102.738944,\"lat\":25.044171},{\"lng\":103.85428,\"lat\":25.054646},{\"lng\":103.85428,\"lat\":25.925055}]","carid":"司机1","place":"多边形"},{"adress":"[{\"lng\":101.389042,\"lat\":25.297413},{\"lng\":101.642005,\"lat\":25.104913},{\"lng\":101.731692,\"lat\":25.866811}]","carid":"司机1","place":"三角形"}]
html:
<!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="https://api.map.baidu.com/api?v=2.0&ak=自己申请"></script> <script type="text/javascript" src="GeoUtils.js"></script> <title>多边形区域判断</title> </head> <body> <div>可以把地图缩小,看一下多边形范围画在哪</div> <input type="button" name="" id="daka" value="判定"> <div id="allmap"></div> </body> </html> <script type="text/javascript"> getMyLocation(); function getMyLocation() { if (navigator.geolocation) { //判断是否有这个对象 navigator.geolocation.getCurrentPosition(function (pos) { var bd = GpsToBaiduPoint(pos.coords); var list = new Array(); list.push(bd); initialize(list); var marker = new BMap.Marker(list[0]); //将点转化成标注点 map.addOverlay(marker); //将标注点添加到地图上 var infoWindow = new BMap.InfoWindow("当前位置"); marker.openInfoWindow(infoWindow); //图片加载完后重绘infoWindow }) } else { console.log("当前系统不支持GPS API") } } //创建地图 var map = new BMap.Map("allmap"); var myrange = []; //创建多边形 var poly = [{"adress":"[{\"lng\":102.368698,\"lat\":25.614778},{\"lng\":102.738944,\"lat\":25.044171},{\"lng\":103.85428,\"lat\":25.054646},{\"lng\":103.85428,\"lat\":25.925055}]","carid":"司机1","place":"多边形"},{"adress":"[{\"lng\":101.389042,\"lat\":25.297413},{\"lng\":101.642005,\"lat\":25.104913},{\"lng\":101.731692,\"lat\":25.866811}]","carid":"司机1","place":"三角形"}]; getRange(poly); function getRange(poly) { var range = []; var polygon = ""; for (var j = 0; j < poly.length; j++) { var len = JSON.parse(poly[j].adress); for (var i = 0; i < len.length; i++) { range.push(new BMap.Point(len[i].lng, len[i].lat)); } polygon = new BMap.Polygon(range, { strokeColor: "#f50704", fillColor: "#cfcfcf", strokeWeight: 3, strokeOpacity: 0, fillOpacity: 0, }); map.addOverlay(polygon); myrange.push(range); range = []; } } function showInfo(thisMarker, point) { var mypolygon = ""; var range2 = []; for (var x = 0; x < myrange.length; x++) { var len = myrange[x]; for (var i = 0; i < len.length; i++) { range2.push(new BMap.Point(len[i].lng, len[i].lat)); } mypolygon = new BMap.Polygon(range2, { strokeColor: "#f50704", fillColor: "#cfcfcf", strokeWeight: 3, strokeOpacity: 0, fillOpacity: 0, }); // //判断点是否在 if (BMapLib.GeoUtils.isPointInPolygon(point, mypolygon)) { alert(poly[x].carid + "在" + poly[x].place+"区域内"); } else { alert(poly[x].carid + "不在" + poly[x].place+"区域内"); } range2 = []; } } function initialize(bdpoint) { // 百度地图API功能 map.addControl(new BMap.NavigationControl()); // 添加平移缩放控件 map.addControl(new BMap.ScaleControl()); // 添加比例尺控件 map.addControl(new BMap.OverviewMapControl()); //添加缩略地图控件 map.enableScrollWheelZoom(); //启用滚轮放大缩小 map.addControl(new BMap.MapTypeControl()); //添加地图类型控件 var point = new BMap.Point(bdpoint[0].lng, bdpoint[0].lat); // 创建点坐标 map.centerAndZoom(point, 10); // 初始化地图,设置中心点坐标和地图级别。 //点击事件 var btn = document.getElementById("daka"); btn.addEventListener("click", function () { showInfo(this, bdpoint[0]); }); } function GpsToBaiduPoint(point) { var _t = wgs2bd(point.latitude, point.longitude); var _BPoint = new BMap.Point(_t[1], _t[0]); return _BPoint; } var pi = 3.14159265358979324; var a = 6378245.0; var ee = 0.00669342162296594323; var x_pi = 3.14159265358979324 * 3000.0 / 180.0; //世界大地坐标转为百度坐标 function wgs2bd(lat, lon) { var wgs2gcjR = wgs2gcj(lat, lon); var gcj2bdR = gcj2bd(wgs2gcjR[0], wgs2gcjR[1]); return gcj2bdR; } function gcj2bd(lat, lon) { var x = lon, y = lat; var z = Math.sqrt(x * x + y * y) + 0.00002 * Math.sin(y * x_pi); var theta = Math.atan2(y, x) + 0.000003 * Math.cos(x * x_pi); var bd_lon = z * Math.cos(theta) + 0.0065; var bd_lat = z * Math.sin(theta) + 0.006; var result = []; result.push(bd_lat); result.push(bd_lon); return result; } function bd2gcj(lat, lon) { var x = lon - 0.0065, y = lat - 0.006; var z = Math.sqrt(x * x + y * y) - 0.00002 * Math.sin(y * x_pi); var theta = Math.atan2(y, x) - 0.000003 * Math.cos(x * x_pi); var gg_lon = z * Math.cos(theta); var gg_lat = z * Math.sin(theta); var result = []; result.push(gg_lat); result.push(gg_lon); return result; } function wgs2gcj(lat, lon) { var dLat = transformLat(lon - 105.0, lat - 35.0); var dLon = transformLon(lon - 105.0, lat - 35.0); var radLat = lat / 180.0 * pi; var magic = Math.sin(radLat); magic = 1 - ee * magic * magic; var sqrtMagic = Math.sqrt(magic); dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi); dLon = (dLon * 180.0) / (a / sqrtMagic * Math.cos(radLat) * pi); var mgLat = lat + dLat; var mgLon = lon + dLon; var result = []; result.push(mgLat); result.push(mgLon); return result; } function transformLat(lat, lon) { var ret = -100.0 + 2.0 * lat + 3.0 * lon + 0.2 * lon * lon + 0.1 * lat * lon + 0.2 * Math.sqrt(Math.abs(lat)); ret += (20.0 * Math.sin(6.0 * lat * pi) + 20.0 * Math.sin(2.0 * lat * pi)) * 2.0 / 3.0; ret += (20.0 * Math.sin(lon * pi) + 40.0 * Math.sin(lon / 3.0 * pi)) * 2.0 / 3.0; ret += (160.0 * Math.sin(lon / 12.0 * pi) + 320 * Math.sin(lon * pi / 30.0)) * 2.0 / 3.0; return ret; } function transformLon(lat, lon) { var ret = 300.0 + lat + 2.0 * lon + 0.1 * lat * lat + 0.1 * lat * lon + 0.1 * Math.sqrt(Math.abs(lat)); ret += (20.0 * Math.sin(6.0 * lat * pi) + 20.0 * Math.sin(2.0 * lat * pi)) * 2.0 / 3.0; ret += (20.0 * Math.sin(lat * pi) + 40.0 * Math.sin(lat / 3.0 * pi)) * 2.0 / 3.0; ret += (150.0 * Math.sin(lat / 12.0 * pi) + 300.0 * Math.sin(lat / 30.0 * pi)) * 2.0 / 3.0; return ret; } </script>
原文链接:https://www.idaobin.com/archives/2281.html
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