106 lines
3.1 KiB
HTML
106 lines
3.1 KiB
HTML
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<template id="particle-burst-template">
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<div data-composition-id="particle-burst" data-width="1920" data-height="1080" data-duration="2">
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<style>
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:root {
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--hg-violet: #7c3aed;
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--hg-violet-2: #a855f7;
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--hg-bg: #0a0a0f;
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--hg-fg: #f5f5fa;
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--hg-dim: #6b6b78;
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}
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* {
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margin: 0;
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padding: 0;
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box-sizing: border-box;
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}
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.stage {
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position: absolute;
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inset: 0;
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display: flex;
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align-items: center;
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justify-content: center;
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}
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.hero {
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font-weight: 900;
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font-size: 320px;
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letter-spacing: -0.05em;
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color: var(--hg-fg);
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white-space: nowrap;
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will-change: transform, opacity;
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position: relative;
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z-index: 10;
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}
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.particle-stage {
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position: absolute;
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inset: 0;
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display: flex;
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align-items: center;
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justify-content: center;
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pointer-events: none;
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}
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.particle {
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position: absolute;
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width: 8px;
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height: 8px;
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border-radius: 50%;
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background: var(--hg-violet-2);
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box-shadow: 0 0 12px var(--hg-violet-2);
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opacity: 0;
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will-change: transform, opacity;
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}
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</style>
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<div class="particle-stage" id="particles"></div>
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<div class="stage"><div class="hero">SPARK</div></div>
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<script>
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window.__timelines = window.__timelines || {};
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const tl = gsap.timeline({ paused: true });
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// Build N particles deterministically
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const N = 36;
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const container = document.getElementById("particles");
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const particles = [];
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for (let i = 0; i < N; i++) {
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const p = document.createElement("div");
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p.className = "particle";
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// Vary size per particle for visual interest
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const sz = 4 + (i % 4) * 3;
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p.style.width = sz + "px";
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p.style.height = sz + "px";
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// Slight color variation
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const hue = ((i * 17) % 60) - 30;
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p.style.filter = `hue-rotate(${hue}deg)`;
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container.appendChild(p);
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particles.push(p);
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}
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// Hero punch + flash entry
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tl.fromTo(
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".hero",
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{ scale: 0.85, opacity: 0 },
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{ scale: 1, opacity: 1, duration: 0.3, ease: "power4.out" },
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0.3,
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);
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// Particles burst out
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particles.forEach((p, i) => {
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const angle = (i / N) * Math.PI * 2 + i * 0.137; // golden-angle jitter
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const radius = 500 + (i % 5) * 90 + (i % 3) * 40;
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const tx = Math.cos(angle) * radius;
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const ty = Math.sin(angle) * radius;
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const dur = 1.1 + (i % 5) * 0.08;
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tl.fromTo(
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p,
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{ x: 0, y: 0, scale: 1, opacity: 1 },
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{ x: tx, y: ty, scale: 0, opacity: 0, duration: dur, ease: "expo.out" },
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0.35 + (i % 6) * 0.012,
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);
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});
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// Hero settle wobble
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tl.to(".hero", { scale: 1.04, duration: 0.1, ease: "power3.out" }, 0.35);
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tl.to(".hero", { scale: 1.0, duration: 0.5, ease: "elastic.out(1, 0.5)" }, 0.45);
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window.__timelines["particle-burst"] = tl;
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</script>
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</div>
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</template>
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