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@Bigismall

Bigismall/getTileFromLatLon.js

Forked from spite/gist:051604efd1d971ab4b6ef1bc1ae2636e
Last active June 25, 2021 11:39
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zoom - lat -lon to mapzen/tilezen tile
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getTileFromLatLon.js
function getTileFromLatLon(zoom, lat, lon) {
const width = Math.pow(2, zoom);
const height = Math.pow(2, zoom);
const latRad = (lat * Math.PI) / 180;
const x = ~~((width * (lon + 180)) / 360);
const y = ~~(((1 - Math.asinh(Math.tan(latRad)) / Math.PI) / 2.0) * height);
return {zoom, x, y};
}
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https://registry.opendata.aws/terrain-tiles/

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