我有一个使用Bing和Google地图的网站。每个功能都有Bing和Google版本。我在Bing地图中复制google.maps.geometry.poly.containsLocation函数时遇到了麻烦。有这样的事吗?
基本上我构建了一个多边形,我正在寻找一个图钉是否位于地图上多边形内部。
答案 0 :(得分:3)
Bing Maps V8有一个空间数学模块,可以使用相交函数轻松地为您进行计算:
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta http-equiv='Content-Type' content='text/html; charset=utf-8'/>
</head>
<body>
<div id='myMap' style='width: 100vw; height: 100vh;'></div>
<script type='text/javascript'>
function load() {
var map = new Microsoft.Maps.Map(document.getElementById('myMap'), {
credentials: 'YOUR BING MAPS KEY'
});
//Create a polygon and location for testing.
var center = map.getCenter();
var polygon = new Microsoft.Maps.Polygon([new Microsoft.Maps.Location(center.latitude - 0.05, center.longitude - 0.05),
new Microsoft.Maps.Location(center.latitude + 0.01, center.longitude - 0.05),
new Microsoft.Maps.Location(center.latitude + 0.01, center.longitude + 0.05)], { fillColor: 'yellow', strokeColor: 'orange',
strokeThickness: 5, strokeDashArray: [1, 2, 5, 10] });
map.entities.push(polygon);
var location = new Microsoft.Maps.Location(center.latitude, center.longitude);
//Load the Spatial Math module
Microsoft.Maps.loadModule('Microsoft.Maps.SpatialMath', function () {
//Check to see if the shapes intersect.
var intersects = Microsoft.Maps.SpatialMath.Geometry.intersects(location, polygon);
if(intersects){
alert("The location is inside in the polygon");
} else {
alert("The location is NOT inside in the polygon");
}
});
}
</script>
<script type='text/javascript' src='https://www.bing.com/api/maps/mapcontrol?callback=load' async defer></script>
</body>
</html>
答案 1 :(得分:0)
您可以使用Bing Maps AJAX控件的可扩展性添加自己的方法。您可以将该扩展方法放在Microsoft.Maps.Location类上。
Microsoft.Maps.Location.prototype.IsInPolygon=function(polygon)
{
var isInside = false;
var j = 0;
var x = this.longitude;
var y = this.latitude;
var paths = polygon.getLocations();
for (var i = 0; i < paths.length ; i++) {
j++;
if (j == paths.length) { j = 0; }
if (((paths[i].latitude < y) && (paths[j].latitude >= y)) || ((paths[j].latitude < y) && (paths[i].latitude >= y))) {
if (paths[i].longitude + (y - paths[i].latitude) / (paths[j].latitude - paths[i].latitude) * (paths[j].longitude - paths[i].longitude) < x) {
isInside = !isInside
}
}
}
return isInside;
};
这是Bing Maps V8的一个工作示例:
<!DOCTYPE html>
<html>
<head>
<title>Bing Maps - V8 - Polygon test</title>
<meta http-equiv='Content-Type' content='text/html; charset=utf-8'/>
</head>
<body>
<div id='myMap' style='width: 100vw; height: 100vh;'></div>
<script type='text/javascript'>
function load() {
Microsoft.Maps.Location.prototype.IsInPolygon=function(polygon)
{
var isInside = false;
var j = 0;
var x = this.longitude;
var y = this.latitude;
var paths = polygon.getLocations();
for (var i = 0; i < paths.length ; i++) {
j++;
if (j == paths.length) { j = 0; }
if (((paths[i].latitude < y) && (paths[j].latitude >= y)) || ((paths[j].latitude < y) && (paths[i].latitude >= y))) {
if (paths[i].longitude + (y - paths[i].latitude) / (paths[j].latitude - paths[i].latitude) * (paths[j].longitude - paths[i].longitude) < x) {
isInside = !isInside
}
}
}
return isInside;
};
var map = new Microsoft.Maps.Map(document.getElementById('myMap'), {
credentials: 'YOUR KEY'
});
var center = map.getCenter();
var polygon = new Microsoft.Maps.Polygon([new Microsoft.Maps.Location(center.latitude - 0.05, center.longitude - 0.05),
new Microsoft.Maps.Location(center.latitude + 0.01, center.longitude - 0.05),
new Microsoft.Maps.Location(center.latitude + 0.01, center.longitude + 0.05)], { fillColor: 'yellow', strokeColor: 'orange',
strokeThickness: 5, strokeDashArray: [1, 2, 5, 10] });
map.entities.push(polygon);
var location = new Microsoft.Maps.Location(center.latitude, center.longitude);
alert("The location is inside in the polygon : " + location.IsInPolygon(polygon));
}
</script>
<script type='text/javascript' src='https://www.bing.com/api/maps/mapcontrol?callback=load' async defer></script>
</body>
</html>