/
index.ts
75 lines (70 loc) · 1.82 KB
/
index.ts
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/*
* Copyright 2019 Google LLC. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// [START maps_maptype_image_overlay]
function initMap(): void {
const map = new google.maps.Map(
document.getElementById("map") as HTMLElement,
{
zoom: 18,
center: { lat: 37.783, lng: -122.403 },
}
);
const bounds: Record<number, [[number, number], [number, number]]> = {
17: [
[20969, 20970],
[50657, 50658],
],
18: [
[41939, 41940],
[101315, 101317],
],
19: [
[83878, 83881],
[202631, 202634],
],
20: [
[167757, 167763],
[405263, 405269],
],
};
const imageMapType = new google.maps.ImageMapType({
getTileUrl: function (coord, zoom) {
if (
zoom < 17 ||
zoom > 20 ||
bounds[zoom][0][0] > coord.x ||
coord.x > bounds[zoom][0][1] ||
bounds[zoom][1][0] > coord.y ||
coord.y > bounds[zoom][1][1]
) {
return "";
}
return [
"https://www.gstatic.com/io2010maps/tiles/5/L2_",
zoom,
"_",
coord.x,
"_",
coord.y,
".png",
].join("");
},
tileSize: new google.maps.Size(256, 256),
});
map.overlayMapTypes.push(imageMapType);
}
// [END maps_maptype_image_overlay]
export { initMap };