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86 lines
1.6 KiB
HTML
86 lines
1.6 KiB
HTML
<!-- Licensed under a BSD license. See license.html for license -->
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
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<title>Three.js - OffscreenCanvas w/Fallback</title>
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<style>
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html, body {
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height: 100%;
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margin: 0;
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}
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#c {
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width: 100%;
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height: 100%;
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display: block;
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}
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</style>
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</head>
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<body>
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<canvas id="c"></canvas>
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</body>
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<script type="module">
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import { init, state } from './shared-cubes.js';
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function startWorker( canvas ) {
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const offscreen = canvas.transferControlToOffscreen();
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const worker = new Worker( 'offscreencanvas-worker-cubes.js', { type: 'module' } );
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worker.postMessage( { type: 'init', canvas: offscreen }, [ offscreen ] );
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function sendSize() {
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worker.postMessage( {
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type: 'size',
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width: canvas.clientWidth,
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height: canvas.clientHeight,
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} );
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}
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window.addEventListener( 'resize', sendSize );
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sendSize();
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console.log( 'using OffscreenCanvas' ); /* eslint-disable-line no-console */
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}
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function startMainPage( canvas ) {
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init( { canvas } );
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function sendSize() {
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state.width = canvas.clientWidth;
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state.height = canvas.clientHeight;
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}
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window.addEventListener( 'resize', sendSize );
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sendSize();
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console.log( 'using regular canvas' ); /* eslint-disable-line no-console */
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}
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function main() { /* eslint consistent-return: 0 */
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const canvas = document.querySelector( '#c' );
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if ( canvas.transferControlToOffscreen ) {
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startWorker( canvas );
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} else {
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startMainPage( canvas );
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}
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}
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main();
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</script>
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</html>
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