Tomáš Mládek
9b6b5547ba
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48 lines
1.4 KiB
JavaScript
48 lines
1.4 KiB
JavaScript
import { Command } from 'commander';
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import puppeteer from 'puppeteer';
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import fs from 'fs';
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const program = new Command();
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program
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.requiredOption('-o, --output <output>', 'Output directory')
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.requiredOption('--fps <fps>', 'Frames per second')
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.requiredOption('--cycles <cycles>', 'Number of cycles')
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.requiredOption('--size <size>', 'Size of the output in pixels')
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.requiredOption('--url <url>', 'URL to render')
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.parse(process.argv);
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const options = program.opts();
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// mkdir p output path
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if (!fs.existsSync(options.output)) {
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fs.mkdirSync(options.output, { recursive: true });
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}
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const browser = await puppeteer.launch({
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args: ['--no-sandbox']
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});
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const page = await browser.newPage();
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await page.setViewport({ width: parseInt(options.size, 10), height: parseInt(options.size, 10) });
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await page.goto(options.url);
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await page.evaluate(async (fps) => {
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// @ts-ignore
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await window.setFps(fps);
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}, options.fps);
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const totalFrames = parseInt(options.fps) * parseInt(options.cycles);
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for (let frame = 0; frame < totalFrames; frame++) {
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let start = Date.now();
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await page.evaluate(async (n) => {
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// @ts-ignore
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await window.setFrame(n);
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}, frame);
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const path = `${options.output}/${frame.toString().padStart(Math.log10(totalFrames) + 1, '0')}.png`;
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await page.screenshot({ path, omitBackground: true });
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let end = Date.now();
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console.log(`Captured frame ${frame + 1}/${totalFrames} (took ${end - start}ms)`);
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}
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console.log('Done.');
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await browser.close();
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