百度地图API（3）：判断地图上的点是否在 圆形 多边形 区域内
GeoUtils.js
这是官方提供的一个js
可以从我gihub下载: https://github.com/liaotuo/BMapAPI/js
js行数过多就不展示了
效果图
源码
- github https://github.com/liaotuo/BMapAPI
Tips
- 要注意Point和Circle 都必须是:BMap.Point和BMap.Bounds对象
- 此案例只展示了多边形和圆形 GeoUtils.js还提供了 矩形 等其他判断API
判断在圆形内
<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=百度地图API开发者密钥AK">script>
<script type="text/javascript" src="js/GeoUtils.js">script>
<title>圆形区域判断title>
head>
<body>
<div id="allmap">div>
body>
html>
<script type="text/javascript">
//创建地图
var map = new BMap.Map("allmap");
//创建一个圆
var circle = new BMap.Circle(new BMap.Point(112.595384,26.904631),1000,{fillColor:"blue", strokeWeight: 1 ,fillOpacity: 0.3, strokeOpacity: 0.3});
var point2s = [
new BMap.Point(112.586149,26.913201),
new BMap.Point(112.58464,26.909432),
new BMap.Point(112.585143,26.899219),
new BMap.Point(112.600953,26.898832),
new BMap.Point(112.607421,26.900572),
new BMap.Point(112.606631,26.904825),
new BMap.Point(112.606523,26.909142),
new BMap.Point(112.59772,26.909399),
];
//创建标注点并添加到地图中
function addMarker(points) {
//循环建立标注点
for(var i=0, pointsLen = points.length; ivar marker = new BMap.Marker(points[i]); //将点转化成标注点
map.addOverlay(marker); //将标注点添加到地图上
//添加监听事件
(function() {
var thePoint = points[i];
marker.addEventListener("click",
function() {
showInfo(this,thePoint);
});
})();
}
}
function showInfo(thisMarker,point) {
//判断点是否在
if(BMapLib.GeoUtils.isPointInCircle(point,circle)){
var infoWindow = new BMap.InfoWindow("在圆形区域内");
thisMarker.openInfoWindow(infoWindow); //图片加载完后重绘infoWindow
}else
{
var infoWindow = new BMap.InfoWindow("不在圆形区域内");
thisMarker.openInfoWindow(infoWindow); //图片加载完后重绘infoWindow
}
}
function initialize() {
alert("点击标注点可以显示是否在区域内");
// 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(112.595384,26.904631); // 创建点坐标
map.centerAndZoom(point,15); // 初始化地图,设置中心点坐标和地图级别。
addMarker(point2s);
map.addOverlay(circle);
}
initialize();
script>判断在多边形内
<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=百度地图API开发者密钥AK">script>
<script type="text/javascript" src="js/GeoUtils.js">script>
<title>圆形区域判断title>
head>
<body>
<div id="allmap">div>
body>
html>
<script type="text/javascript">
//创建地图
var map = new BMap.Map("allmap");
//创建一个多边形
//创建多边形
var polygon2 = new BMap.Polygon([
new BMap.Point(112.579325,26.915291),
new BMap.Point(112.584967,26.899086),
new BMap.Point(112.608287,26.898023),
new BMap.Point(112.605035,26.90764),
new BMap.Point(112.602825,26.914356),
new BMap.Point(112.588254,26.909862),
], {strokeColor:"#f50704",fillColor:"#cfcfcf", strokeWeight:5, strokeOpacity:0,fillOpacity:0,});
var point2s = [
new BMap.Point(112.586149,26.913201),
new BMap.Point(112.58464,26.909432),
new BMap.Point(112.585143,26.899219),
new BMap.Point(112.600953,26.898832),
new BMap.Point(112.607421,26.900572),
new BMap.Point(112.606631,26.904825),
new BMap.Point(112.606523,26.909142),
new BMap.Point(112.59772,26.909399),
];
//创建标注点并添加到地图中
function addMarker(points) {
//循环建立标注点
for(var i=0, pointsLen = points.length; ivar marker = new BMap.Marker(points[i]); //将点转化成标注点
map.addOverlay(marker); //将标注点添加到地图上
//添加监听事件
(function() {
var thePoint = points[i];
marker.addEventListener("click",
function() {
showInfo(this,thePoint);
});
})();
}
}
function showInfo(thisMarker,point) {
//判断点是否在
if(BMapLib.GeoUtils.isPointInPolygon(point,polygon2)){
var infoWindow = new BMap.InfoWindow("在区域内");
thisMarker.openInfoWindow(infoWindow); //图片加载完后重绘infoWindow
}else
{
var infoWindow = new BMap.InfoWindow("不在区域内");
thisMarker.openInfoWindow(infoWindow); //图片加载完后重绘infoWindow
}
}
function initialize() {
alert("点击标注点可以显示是否在区域内");
// 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(112.595384,26.904631); // 创建点坐标
map.centerAndZoom(point,15); // 初始化地图,设置中心点坐标和地图级别。
addMarker(point2s);
map.addOverlay(polygon2);
}
initialize();
script>