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31 lines
1.0 KiB
TypeScript
31 lines
1.0 KiB
TypeScript
/*
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* SPDX-FileCopyrightText: syuilo and misskey-project
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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import _confetti from 'canvas-confetti';
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import * as os from '@/os.js';
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export function confetti(options: { duration?: number; } = {}) {
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const duration = options.duration ?? 1000 * 4;
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const animationEnd = Date.now() + duration;
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const defaults = { startVelocity: 30, spread: 360, ticks: 60, zIndex: os.claimZIndex('high') };
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function randomInRange(min, max) {
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return Math.random() * (max - min) + min;
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}
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const interval = setInterval(() => {
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const timeLeft = animationEnd - Date.now();
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if (timeLeft <= 0) {
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return clearInterval(interval);
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}
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const particleCount = 50 * (timeLeft / duration);
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// since particles fall down, start a bit higher than random
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_confetti(Object.assign({}, defaults, { particleCount, origin: { x: randomInRange(0.1, 0.3), y: Math.random() - 0.2 } }));
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_confetti(Object.assign({}, defaults, { particleCount, origin: { x: randomInRange(0.7, 0.9), y: Math.random() - 0.2 } }));
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}, 250);
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}
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