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Vance IngallsandClaude Opus 4.8
1c0eef835f
The kinetic-letter-in motion-primitive (a music-to-video reference authors copy) animated the word's letterSpacing as a settle — a reflow tween that micro-stutters under seek-by-frame capture, and outside the registry scan so the rule never fired on it. The chars are already per-glyph spans, so migrate the settle to a per-glyph x spread ((0.04em − −0.04em) × 280px = 22.4px/gap, centered about index 3), with a comment naming the hazard and the rule. Render-verified: faithful, smooth. Document two intentional design choices in gsap_non_transform_motion so future readers don't read them as misses: - No per-line/per-file suppression by design — the stance is fix-the-motion, not silence-the-rule; every plain-DOM case has a faithful transform equivalent. - set() is skipped intentionally: a set() that seats an integer-snapped layout position before a later transform tween is a single from-state frame, not motion. Also hoist loadParseGsapScript() above the per-script loop (the other async rules do the same; dynamic-import cache makes it equivalent, but the placement no longer reads as load-bearing). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
99 lines
2.8 KiB
HTML
99 lines
2.8 KiB
HTML
<!doctype html>
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<html lang="en">
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<head>
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<meta charset="UTF-8" />
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<meta name="viewport" content="width=1920, height=1080" />
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<title>02 · kinetic_letter_in</title>
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<script src="../assets/gsap.min.js"></script>
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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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html,
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body {
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margin: 0;
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width: 1920px;
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height: 1080px;
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overflow: hidden;
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background: var(--hg-bg);
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font-family: "Inter", system-ui, sans-serif;
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color: var(--hg-fg);
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-webkit-font-smoothing: antialiased;
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}
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#scene {
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position: absolute;
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inset: 0;
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width: 1920px;
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height: 1080px;
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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: 280px;
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letter-spacing: -0.04em;
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line-height: 0.95;
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color: var(--hg-fg);
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white-space: nowrap;
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}
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.char {
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display: inline-block;
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will-change: transform, opacity;
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}
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</style>
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</head>
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<body>
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<div
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id="root"
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data-composition-id="main"
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data-start="0"
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data-duration="2"
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data-width="1920"
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data-height="1080"
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>
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<div id="scene" class="clip" data-start="0" data-duration="2" data-track-index="1">
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<div class="stage">
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<div class="hero" id="hero">
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<span class="char">K</span><span class="char">I</span><span class="char">N</span
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><span class="char">E</span><span class="char">T</span><span class="char">I</span
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><span class="char">C</span>
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</div>
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</div>
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</div>
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</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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tl.from(
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".char",
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{ y: 80, opacity: 0, stagger: 0.045, ease: "back.out(2)", duration: 0.55 },
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0.05,
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);
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// Letters loosen apart as they settle. Animate each glyph's x (a transform), NOT the
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// word's letter-spacing: animating letter-spacing reflows text and snaps glyph positions
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// to the pixel grid, which micro-stutters on a slow settle under the seek-by-frame
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// capture engine (the gsap_non_transform_motion lint rule flags it). The chars are
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// already per-glyph spans, so spread them directly: (0.04em − (−0.04em)) × 280px = 22.4px
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// per gap, centered about index 3 of the 7-letter word.
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tl.to(".char", { x: (i) => (i - 3) * 22.4, duration: 0.6, ease: "power2.out" }, 0.7);
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window.__timelines["main"] = tl;
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</script>
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</body>
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</html>
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