需要将这个覆盖物置于地图中间且不超过地图边界的放至最大

计算覆盖物中心点，定为地图中心点

计算覆盖物的最大经纬度，和最小经纬度，测算出实际最长距离，根据距离与zoom对应关系设置zoom

function getAreaCenter(params, info) {let code = info.codeif (!params.target) {return;}let PolygonPath = params.target.getPath();let PolygonArr = [];PolygonPath.forEach((item) => {let path = [item.KL, item.kT];PolygonArr.push(path);});let total = PolygonArr.length;if (total <= 0) {return;}let X = 0;let Y = 0;let Z = 0;PolygonArr.forEach((lnglat) => {let lng = (lnglat[0] * Math.PI) / 180;let lat = (lnglat[1] * Math.PI) / 180;let x, y, z;x = Math.cos(lat) * Math.cos(lng);y = Math.cos(lat) * Math.sin(lng);z = Math.sin(lat);X += x;Y += y;Z += z;});X = X / total;Y = Y / total;Z = Z / total;let Lng = Math.atan2(Y, X);let Hyp = Math.sqrt(X * X + Y * Y);let Lat = Math.atan2(Z, Hyp);let center = [(Lng * 180) / Math.PI, (Lat * 180) / Math.PI];let maxL = Math.max(...PolygonArr.map(item=> item[0]))let minL = Math.min(...PolygonArr.map(item=> item[0]))let maxK = Math.max(...PolygonArr.map(item=> item[1]))let minK = Math.min(...PolygonArr.map(item=> item[1]))let p1 = [maxL,maxK]let p2 = [minL,minK]let dis = AMap.GeometryUtil.distance(p1, p2);
let zoom = 12let zooms = [[10000,11,],[5000,12,],[2000,15,],[1000,16,],[600,16.5,],[500,17,],[200,18,],[100,19,],[50,20,],[15,21,],[10,22,]]for(let i = 0;i<zooms.length;i++){let item = zooms[i]if(dis>item[0]){zoom = item[1]break}}map.setZoomAndCenter(zoom, center);
}