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Animating layout properties (left/right/top/bottom/margin*) or using
roundProps snaps motion to integer device pixels. Under the seek-by-frame
capture engine this is invisible at high per-frame deltas (fast tweens) but
visibly stutters at low deltas (slow tweens / ease-out tails): sub-pixel
movement rounds to the same pixel for several frames, then jumps a whole
pixel. Transforms (x/y/scale) interpolate sub-pixel and stay smooth.
New rule gsap_non_transform_motion (error):
- Sources timeline tweens from the acorn parser's full animation list, so
label- and relative-positioned tweens (tl.to(..., "label") / "+=1") are
covered and real AST keys avoid phantom-prop / nested-brace misreads.
- Exempts html-in-canvas elements (a <canvas layoutsubtree> ancestor): they
are rasterized from sub-pixel getComputedStyle and do not integer-snap.
Per-element resolution, so a grouped glass+text tween still flags the
plain-DOM half. roundProps is never exempt (it rounds before the style).
- Uses Object.hasOwn for the layout-prop lookup, skips set(), and merges
standalone gsap.* calls.
Migrated 9 registry compositions off layout-prop animation onto transforms,
each render-verified visually identical:
- liquid-glass-{notification,widgets,media-controls,context-menu}: plain-DOM
text overlays -> transforms; glass panels stay on left/top (canvas-exempt).
- vignelli: curtain wipes left:% -> xPercent.
- lt-mask-reveal: sweep left:% -> x px.
- flowchart, flowchart-vertical, decision-tree: cursor paths left/top -> x/y.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
195 lines
5.1 KiB
HTML
Vendored
195 lines
5.1 KiB
HTML
Vendored
<!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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<title>Massimo Vignelli Video</title>
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<script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
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<style>
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body,
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html {
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margin: 0;
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padding: 0;
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background: #ffffff;
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overflow: hidden;
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width: 1080px;
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height: 1920px;
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font-family: "Helvetica", Arial, sans-serif;
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}
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/* 6-Column Grid System */
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.grid-container {
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position: absolute;
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top: 0;
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left: 0;
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width: 1080px;
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height: 1920px;
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display: grid;
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grid-template-columns: repeat(6, 1fr);
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pointer-events: none;
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z-index: 1000;
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opacity: 0; /* Keep grid invisible but present for layout references */
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}
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.grid-column {
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border-right: 1px solid rgba(204, 0, 0, 0.2); /* Vignelli Red accent */
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}
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#main-composition {
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position: relative;
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width: 1080px;
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height: 1920px;
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background: #ffffff;
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overflow: hidden;
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}
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/* Layer Hosts */
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#a-roll-wrapper {
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position: absolute;
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top: 0;
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left: 0;
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width: 100%;
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height: 100%;
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z-index: 10;
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overflow: hidden;
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}
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#a-roll,
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#a-roll-wrapper img.__render_frame__,
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#a-roll-wrapper img.__preview_render_frame__ {
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position: absolute;
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inset: 0;
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width: 100%;
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height: 100%;
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object-fit: cover;
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}
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#overlays-comp,
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#captions-comp {
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position: absolute;
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top: 0;
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left: 0;
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width: 1080px;
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height: 1920px;
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pointer-events: none;
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}
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#overlays-comp {
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z-index: 20;
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}
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#captions-comp {
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z-index: 30;
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}
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/* Curtain Transition Layer */
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.curtain {
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position: absolute;
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top: 0;
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left: 0;
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width: 100%;
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height: 100%;
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background: #1a1a1a;
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z-index: 25;
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pointer-events: none;
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}
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.curtain.red {
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background: #cc0000;
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z-index: 26;
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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="main-composition"
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data-composition-id="main-comp"
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data-width="1080"
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data-height="1920"
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data-start="0"
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data-duration="__VIDEO_DURATION__"
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>
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<!-- Transitions -->
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<div id="curtain-black" class="curtain"></div>
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<div id="curtain-red" class="curtain red"></div>
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<!-- Overlays Composition -->
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<div
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id="overlays-comp"
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data-composition-id="overlays"
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data-composition-src="compositions/overlays.html"
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data-start="0"
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data-duration="__VIDEO_DURATION__"
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data-track-index="2"
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></div>
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<!-- Captions Composition -->
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<div
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id="captions-comp"
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data-composition-id="captions"
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data-composition-src="compositions/captions.html"
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data-start="0"
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data-duration="__VIDEO_DURATION__"
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data-track-index="3"
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></div>
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<!-- Grid Visualization -->
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<div class="grid-container">
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<div class="grid-column"></div>
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<div class="grid-column"></div>
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<div class="grid-column"></div>
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<div class="grid-column"></div>
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<div class="grid-column"></div>
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<div class="grid-column"></div>
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</div>
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<script>
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const tl = gsap.timeline({ paused: true });
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// Curtains rest off-screen left until their wipes begin.
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gsap.set("#curtain-black", { xPercent: -100 });
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gsap.set("#curtain-red", { xPercent: -100 });
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// Transition: Curtain Pull logic
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// A-roll leaves the screen at least once.
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// Timing: Let's do a curtain pull at 3.7s (transitioning to the 62% stat)
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// and return at 7.3s (end of attention stat).
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// Curtain Out (A-roll hidden)
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tl.to("#curtain-black", { xPercent: 0, duration: 0.2, ease: "power2.inOut" }, 3.5);
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tl.to("#a-roll-wrapper", { opacity: 0, duration: 0 }, 3.7);
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tl.to("#curtain-black", { xPercent: 100, duration: 0.4, ease: "power2.inOut" }, 3.7);
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// Curtain In (A-roll return)
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tl.set("#curtain-red", { xPercent: -100 }, 7.1);
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tl.to("#curtain-red", { xPercent: 0, duration: 0.2, ease: "power2.inOut" }, 7.1);
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tl.to("#a-roll-wrapper", { opacity: 1, duration: 0 }, 7.3);
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tl.to("#curtain-red", { xPercent: 100, duration: 0.4, ease: "power2.inOut" }, 7.3);
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window.__timelines = window.__timelines || {};
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window.__timelines["main-comp"] = tl;
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</script>
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</div>
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<!-- A-Roll (direct child of body to avoid video_nested_in_timed_element) -->
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<div id="a-roll-wrapper">
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<video
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id="a-roll"
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src="__VIDEO_SRC__"
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muted
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playsinline
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data-start="0"
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data-duration="__VIDEO_DURATION__"
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data-track-index="0"
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></video>
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</div>
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<audio
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id="a-roll-audio"
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src="__VIDEO_SRC__"
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data-start="0"
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data-duration="__VIDEO_DURATION__"
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data-track-index="5"
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data-volume="1"
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></audio>
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</body>
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</html>
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