百度地图：根据地图上的坐标点数组获取自适应的地图中心点和地图层级

var points = [point1, point2, point3];  
var view = map.getViewport(eval(points));  
var mapZoom = view.zoom;   
var centerPoint = view.center;   
map.centerAndZoom(centerPoint,mapZoom); 

转载至：https://www.cnblogs.com/Apply-fly/p/7197867.html