在javascript中获取Bing Map中多边形形状的质心

// 创建地图实例
var map = new Microsoft.Maps.Map(document.getElementById('map'), {
    credentials: 'Your Bing Maps API Key'
});

// 创建多边形对象
var polygon = new Microsoft.Maps.Polygon([
    new Microsoft.Maps.Location(47.6062, -122.3321),
    new Microsoft.Maps.Location(47.6097, -122.3331),
    new Microsoft.Maps.Location(47.6097, -122.3351),
    new Microsoft.Maps.Location(47.6062, -122.3351)
], {
    fillColor: 'rgba(0, 0, 255, 0.5)',
    strokeColor: 'blue',
    strokeThickness: 2
});

// 将多边形添加到地图上
map.entities.push(polygon);

// 获取多边形的顶点坐标
var locations = polygon.getLocations();

// 计算多边形的质心坐标
var centroid = calculateCentroid(locations);

// 创建质心标记
var centroidPin = new Microsoft.Maps.Pushpin(centroid, {
    color: 'red'
});

// 将质心标记添加到地图上
map.entities.push(centroidPin);

// 计算多边形的质心坐标
function calculateCentroid(locations) {
    var xSum = 0;
    var ySum = 0;
    var count = locations.length;

    for (var i = 0; i < count; i++) {
        xSum += locations[i].latitude;
        ySum += locations[i].longitude;
    }

    var centroid = new Microsoft.Maps.Location(xSum / count, ySum / count);
    return centroid;
}