我知道这很旧,但我希望这可以帮助其他人寻找同样的东西。这可能不是最优雅的解决方案,但它完成了任务。我只需映射预定义的图像 url,创建我的 ImageMapTypes,然后将其传递到动画循环中,该循环检查地图上是否有图层,清除是否存在,然后根据循环计数设置新图层。希望这可以帮助。
var map;
// Weather tile url from Iowa Environmental Mesonet (IEM): http://mesonet.agron.iastate.edu/ogc/
var urlTemplate = 'http://mesonet.agron.iastate.edu/cache/tile.py/1.0.0/nexrad-n0q-{timestamp}/{zoom}/{x}/{y}.png';
// The time stamps values for the IEM service for the last 50 minutes broken up into 5 minute increments.
var timestamps = ['900913-m50m', '900913-m45m', '900913-m40m', '900913-m35m', '900913-m30m', '900913-m25m', '900913-m20m', '900913-m15m', '900913-m10m', '900913-m05m', '900913'];
function initMap() {
map = new google.maps.Map(document.getElementById('map'), {
center: {lat: 38.0781, lng: -97.7030},
zoom: 5
});
let tileSources = timestamps.map((timestamp) => {
return new google.maps.ImageMapType({
getTileUrl: function(tile, zoom) {
const { x, y} = tile;
return `https://mesonet.agron.iastate.edu/cache/tile.py/1.0.0/nexrad-n0q-${timestamp}/${zoom}/${x}/${y}.png?`+ (new Date()).getTime();
},
tileSize: new google.maps.Size(256, 256),
opacity:0.60,
name : 'NEXRAD',
isPng: true
});
});
startAnimation(map, tileSources);
}
function startAnimation(map, layers) {
// create empty overlay entry
map.overlayMapTypes.push(null);
var count = 0;
window.setInterval(() => {
if(map.overlayMapTypes.getLength() > 0)
map.overlayMapTypes.clear();
map.overlayMapTypes.setAt("0",layers[count]);
count = (count + 1) % layers.length;
},800);
}