mirror of
https://github.com/a-b-street/abstreet.git
synced 2024-11-28 03:35:51 +03:00
56 lines
1.9 KiB
HTML
56 lines
1.9 KiB
HTML
<!DOCTYPE html>
|
|
<html>
|
|
<head>
|
|
<meta charset="UTF-8">
|
|
<script type="module">
|
|
import { default as init } from './osm_viewer.js';
|
|
|
|
function prettyPrintBytes(bytes) {
|
|
if (bytes < 1024 ** 2) {
|
|
return Math.round(bytes / 1024) + " KB";
|
|
}
|
|
return Math.round(bytes / 1024 ** 2) + " MB";
|
|
}
|
|
|
|
async function run() {
|
|
const t0 = performance.now();
|
|
console.log("Started loading WASM");
|
|
let response = await fetch('./osm_viewer_bg.wasm');
|
|
const contentLength = response.headers.get('Content-Length');
|
|
const reader = response.body.getReader();
|
|
let receivedLength = 0;
|
|
let chunks = [];
|
|
while (true) {
|
|
const {done, value} = await reader.read();
|
|
if (done) {
|
|
break;
|
|
}
|
|
chunks.push(value);
|
|
receivedLength += value.length;
|
|
document.getElementById("progress_text").innerText = prettyPrintBytes(receivedLength) + " / " + prettyPrintBytes(contentLength);
|
|
document.getElementById("progress_bar").style.width = (100.0 * receivedLength / contentLength) + "%";
|
|
}
|
|
document.getElementById("progress_text").innerText = "Loaded " + prettyPrintBytes(contentLength) + ", now initializing WASM module";
|
|
let blob = new Blob(chunks);
|
|
let buffer = await blob.arrayBuffer();
|
|
const t1 = performance.now();
|
|
console.log(`It took ${t1 - t0} ms to download WASM, now initializing it`);
|
|
await init(buffer);
|
|
}
|
|
|
|
run();
|
|
</script>
|
|
</head>
|
|
<body style="background-color:black;">
|
|
<div id="loading" style="padding-top: 40px; color: white; text-align: center; font-family: arial; font-size: 200%;">
|
|
<h1>Loading OpenStreetMap viewer...</h1>
|
|
<div style="width: 100%; background-color: white;">
|
|
<div style="width: 1%; height: 30px; background-color: red;" id="progress_bar"></div>
|
|
</div>
|
|
<div id="progress_text"></div>
|
|
<p>If you think something has broken, check your browser's developer console (Ctrl+Shift+I or similar)</p>
|
|
<p>(Your browser must support WebGL and WebAssembly)</p>
|
|
</div>
|
|
</body>
|
|
<html>
|