地图根据POI获取轮廓坐标集合
百度地图方法
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>百度地图DEMO</title>
<script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=百度地图ak"></script>
<script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
var queryHouseOutline = function(hid, callback) {
var baseURL = 'http://map.baidu.com/?reqflag=pcmap&coord_type=3&from=webmap&qt=ext&ext_ver=new&l=18';
var url = baseURL + "&uid=" + hid;
callback && (window.queryHouseOutlineCallback = callback);
$.ajax({
type: "get",
async: false,
url: url,
dataType: "jsonp",
jsonpCallback: "queryHouseOutlineCallback",
success: function(datas) {}
});
};
/**
* 模糊查询小区信息, 无返回值
* @param {} house 小区名称
* @param {} city 所属城市名称
* @param {} ak 百度地图AK
* @param {} callback 回调函数，该函数可以接收到请求的返回值
*/
var queryHouse = function(house, city, ak, callback) {
var baseURL = 'http://api.map.baidu.com/place/v2/search?output=json&scope=2';
var url = baseURL + "&q=" + house + "®ion=" + city + "&ak=" + ak;
callback && (window.queryHouseCallback = callback);
$.ajax({
type: "get",
async: false,
url: url,
dataType: "jsonp",
jsonpCallback: "queryHouseCallback",
success: function(datas) {}
});
};
/**
* 墨卡托坐标转百度坐标
* @param {} coordinate
* @return {}
*/
var coordinateToPoints = function(map, coordinate) {
var points = [];
if (coordinate) {
var arr = coordinate.split(";");
if (arr) {
for (var i = 0; i < arr.length; i++) {
var coord = arr[i].split(",");
if (coord && coord.length == 2) {
var mctXY = new BMap.Pixel(coord[0], coord[1]);
var project = map.getMapType().getProjection();
var point = project.pointToLngLat(mctXY);
points.push(new BMap.Point(point.lng, point.lat));
}
}
}
}
return points;
};
/**
* 墨卡托坐标解析
* @param {} mocator
* @return {}
*/
var parseGeo = function(mocator) {
if (typeof mocator != 'string') {
return {};
}
var t = mocator.split("|");
var n = parseInt(t[0]);
var i = t[1];
var r = t[2];
var o = r.split(";");
if (n === 4) {
for (var a = [], s = 0; s < o.length - 1; s++) {
"1" === o[s].split("-")[0] && a.push(o[s].split("-")[1]);
}
o = a;
o.push("");
}
var u = [];
switch (n) {
case 1:
u.push(o[0]);
break;
case 2:
case 3:
case 4:
for (var s = 0; s < o.length - 1; s++) {
var l = o[s];
if (l.length > 100) {
l = l.replace(/(-?[1-9]\d*\.\d*|-?0\.\d*[1-9]\d*|-?0?\.0+|0|-?[1-9]\d*),(-?[1-9]\d*\.\d*|-?0\.\d*[1-9]\d*|-?0?\.0+|0|-?[1-9]\d*)(,)/g,
"$1,$2;");
u.push(l);
} else {
for (var c = [], d = l.split(","), f = 0; f < d.length; f += 2) {
var p = d[f];
var h = d[f + 1];
c.push(p + "," + h);
}
u.push(c.join(";"))
}
}
break;
default:
break;
}
if (u.length <= 1) {
u = u.toString();
}
var result = {
type: n,
bound: i,
points: u
};
return result;
};
var map = new BMap.Map("allmap"); // 创建Map实例
map.centerAndZoom("北京", 19);
map.addControl(new BMap.MapTypeControl()); //添加地图类型控件
map.enableScrollWheelZoom(false); //开启鼠标滚轮缩放
/**
* 第一个参数是城市名，第二参数是小区名
*/
var showArea = function(city, area) {
queryHouse(area, city, "百度地图ak", function(data) {
if (data.message == 'ok') {
var houses = data.results;
if (houses && houses.length > 0) {
var house = houses[0];
queryHouseOutline(house.uid, function(houseOutline) {
console.log(houseOutline)
var geo = houseOutline.content.geo;
if (!geo) {
var location = house.location;
var point = new BMap.Point(location.lng, location.lat);
map.centerAndZoom(point, 19);
var marker = new BMap.Marker(point);
marker.setAnimation(BMAP_ANIMATION_BOUNCE);
map.addOverlay(marker);
} else {
map.clearOverlays();
var geoObj = parseGeo(geo);
//边界点
var points = coordinateToPoints(map, geoObj.points);
var ply = new BMap.Polygon(points, {
strokeWeight: 2,
strokeColor: "#F01B2D",
strokeOpacity: 0.9,
fillColor: "transparent"
}); //建立多边形覆盖物
// let arr = ''
// ply.Bo.forEach(a=>{
// // arr.push([a.lng,a.lat])
// arr+=arr?(','+a.lng+','+a.lat):(a.lng+','+a.lat)
// }) //用来把轮廓集合根据需要的格式进行打印出来
// console.log(arr)
console.log(ply.Bo)
map.addOverlay(ply); //添加覆盖物
map.setViewport(ply.getPath()); //调整视野
}
});
}
}
});
};
showArea($('#cityId').val(), $('#areaId').val());
$('#showBtn').click(function() {
debugger;
showArea($('#cityId').val(), $('#areaId').val());
});
$("#areaId").keydown(function(e) {
if (event.keyCode == "13") {
showArea($('#cityId').val(), $('#areaId').val());
}
})
});
</script>
</head>
<body>
<table>
<tr>
<td>城市:</td>
<td>
<input id="cityId" type="text" value="重庆" />
</td>
<td>小区:</td>
<td>
<input id="areaId" type="text" value="江北机场" />
</td>
<td>
<button id="showBtn">显示</button>
</td>
</tr>
</table>
<div id="allmap" style="width: 90vw; height: 90vh;"></div>
</body>
</html>
浙公网安备 33010602011771号