Javascript 获取给定中心点和半径的边界框的纬度/经度值

我正在使用Twitter4j API获取给定区域内的所有流式推文

FilterQuery用于定义此查询，并接受以下格式的边界框搜索区域坐标：

double box[][] = {{lon1, lat1}, {lon2, lat2}};
new FilterQuery(count, idToFollow, stringsToTrack, box);

给定我的中心点（latOriginal、longOriginal）和半径（radius），是否有一种聪明的方法来计算这些边界框值坐标

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谢谢

边界框的宽度为2R，高度为2R

var north = google.maps.geometry.spherical.computeOffset(center, radius, 0).lat();
var east  = google.maps.geometry.spherical.computeOffset(center, radius, 90).lng();
var south = google.maps.geometry.spherical.computeOffset(center, radius, 180).lat();
var west  = google.maps.geometry.spherical.computeOffset(center, radius, -90).lng();

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边界框的宽度为2R，高度为2R

var north = google.maps.geometry.spherical.computeOffset(center, radius, 0).lat();
var east  = google.maps.geometry.spherical.computeOffset(center, radius, 90).lng();
var south = google.maps.geometry.spherical.computeOffset(center, radius, 180).lat();
var west  = google.maps.geometry.spherical.computeOffset(center, radius, -90).lng();

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边界框的宽度为2R，高度为2R

var north = google.maps.geometry.spherical.computeOffset(center, radius, 0).lat();
var east  = google.maps.geometry.spherical.computeOffset(center, radius, 90).lng();
var south = google.maps.geometry.spherical.computeOffset(center, radius, 180).lat();
var west  = google.maps.geometry.spherical.computeOffset(center, radius, -90).lng();

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边界框的宽度为2R，高度为2R

var north = google.maps.geometry.spherical.computeOffset(center, radius, 0).lat();
var east  = google.maps.geometry.spherical.computeOffset(center, radius, 90).lng();
var south = google.maps.geometry.spherical.computeOffset(center, radius, 180).lat();
var west  = google.maps.geometry.spherical.computeOffset(center, radius, -90).lng();