mirror of
https://github.com/heygen-com/hyperframes.git
synced 2026-09-01 19:42:03 +00:00
Miguel Ángel
9734578e60
Restores the 208 catalog items reverted after their previews 404'd in production, this time on the payload mechanism rather than the .html files that caused the outage. The generator no longer writes a preview document to docs/public. That writer, and the machinery under it, existed only to produce files the docs host discards, so it is gone rather than bypassed. Items now embed the composition itself via a payload, which is what the previous change already does for the items that were already in the catalog. The variables explorer is parked, not restored: it drove its preview through the same unpublished .html path, so it would have shown an empty frame. Items that declare variables get the live player plus the static variables table, and reconnecting the explorer to payloads is a follow-up.
385 lines
14 KiB
HTML
Vendored
385 lines
14 KiB
HTML
Vendored
<!doctype html>
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<!--
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caption-camera-follow: the words do not move, the camera does.
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One sentence. Layout is self similar: every new word is sized as a fraction of the
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bounding box of everything written so far, and is dropped either to the right of that
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box or onto a new line below it, alternating. Because each word is measured against a
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box that keeps growing, the box grows geometrically, so the camera pulls back at a
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steady exponential rate and every word arrives at roughly the same size on screen. Old
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words stay lit and simply become small, piling up toward the top left the way
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handwriting fills a page. The last beat carries the same pull back all the way out
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until the whole sentence is readable at once.
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Every ease is a cubic bezier written out by hand and solved in this file. No preset is
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used anywhere. Motion blur is radial, the way it reads in real camera footage: each word
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carries its own blur share, scaled by how far that word sits from the centre of the move,
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so the frame smears outward from the point the camera is pushing toward. One shared
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amount variable is tweened per move and every word multiplies it by its own distance
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share, so the whole radial pulse costs one tween instead of fourteen.
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Mount contract: everything lives inside <template>, styles and scripts included, and the
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scripts sit INSIDE the composition root. A host clones template content into its own
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mount and only runs scripts found inside the root; markup left outside is copied without
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its behaviour, which renders a black card with no timeline at all.
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-->
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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>Camera Follow Captions - Demo</title>
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</head>
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<body>
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<template>
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<div
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id="root"
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class="clip cf-root"
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data-composition-id="caption-camera-follow"
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data-duration="9"
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data-fps="30"
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>
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<style>
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.cf-root {
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--accent: #ffd84d;
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--ink: #ffffff;
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position: absolute;
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inset: 0;
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overflow: hidden;
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background: #0b0b0d;
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pointer-events: none;
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}
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#cf-stage {
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position: absolute;
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inset: 0;
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overflow: hidden;
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}
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#cf-world {
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position: absolute;
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left: 0;
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top: 0;
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width: 0;
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height: 0;
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--amt: 0px;
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}
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.cf-word {
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position: absolute;
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white-space: nowrap;
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font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
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font-weight: 700;
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text-transform: uppercase;
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letter-spacing: 0.005em;
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line-height: 0.78;
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color: var(--ink);
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opacity: 0;
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--k: 0;
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filter: blur(calc(var(--k) * var(--amt)));
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}
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.cf-word.is-accent {
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color: var(--accent);
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}
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#cf-vignette {
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position: absolute;
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inset: 0;
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background: radial-gradient(
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ellipse at 50% 50%,
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rgba(0, 0, 0, 0) 42%,
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rgba(0, 0, 0, 0.55) 100%
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);
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}
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</style>
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<div id="cf-stage">
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<div id="cf-world"></div>
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</div>
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<div id="cf-vignette"></div>
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<script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
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<script>
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(function () {
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gsap.defaults({ immediateRender: false });
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/* Cubic bezier solver. Newton first, bisection as the fallback, so it is
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exact and deterministic for every input. */
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function bezier(x1, y1, x2, y2) {
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function curve(t, a1, a2) {
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var A = 1 - 3 * a2 + 3 * a1;
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var B = 3 * a2 - 6 * a1;
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var C = 3 * a1;
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return ((A * t + B) * t + C) * t;
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}
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function slope(t, a1, a2) {
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var A = 1 - 3 * a2 + 3 * a1;
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var B = 3 * a2 - 6 * a1;
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var C = 3 * a1;
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return (3 * A * t + 2 * B) * t + C;
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}
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return function (p) {
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if (p <= 0) return 0;
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if (p >= 1) return 1;
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var t = p;
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for (var i = 0; i < 8; i++) {
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var d = slope(t, x1, x2);
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if (Math.abs(d) < 1e-6) break;
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var e = curve(t, x1, x2) - p;
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if (Math.abs(e) < 1e-7) return curve(t, y1, y2);
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t -= e / d;
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}
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var lo = 0;
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var hi = 1;
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t = p;
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for (var j = 0; j < 24; j++) {
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var x = curve(t, x1, x2);
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if (Math.abs(x - p) < 1e-7) break;
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if (x > p) hi = t;
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else lo = t;
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t = (lo + hi) / 2;
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}
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return curve(t, y1, y2);
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};
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}
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/* Leaves the mark fast, spends most of its time arriving. */
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var EASE_STEP = bezier(0.31, 0, 0.11, 1);
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/* The closing pull back: slower to leave, glides a long way out. */
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var EASE_WIDE = bezier(0.42, 0, 0.14, 1);
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/* Word ink coming up. */
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var EASE_INK = bezier(0.2, 0.7, 0.3, 1);
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/* Blur rising into the move and wiped off out of it. */
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var EASE_BLUR_UP = bezier(0.2, 0.8, 0.4, 1);
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var EASE_BLUR_DOWN = bezier(0.5, 0, 0.2, 1);
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var DUR = 9;
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var STEP = 0.52;
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var MOVE = 0.4;
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var WORDS = [
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{ text: "write" },
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{ text: "the" },
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{ text: "html", accent: true },
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{ text: "and" },
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{ text: "the" },
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{ text: "video", accent: true },
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{ text: "renders" },
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{ text: "itself" },
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{ text: "no" },
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{ text: "timeline" },
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{ text: "no" },
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{ text: "keyframes", accent: true },
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{ text: "just" },
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{ text: "code", accent: true },
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];
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var world = document.getElementById("cf-world");
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var stage = document.getElementById("cf-stage");
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/* The runtime strips the root id on clone, so reach the root through a
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descendant instead of getElementById. */
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var root = stage.parentElement;
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var FRAME_W = root.clientWidth || 1080;
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var FRAME_H = root.clientHeight || 1920;
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/* Base size is picked so the opening shot sits near 1:1. Everything after it
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is a pull back, so the world is only ever scaled down and type stays crisp. */
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var BASE = Math.max(FRAME_W, FRAME_H) * 0.16;
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/* Each new word is this fraction of the current box height. */
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var RATIO = 0.72;
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var MARGIN = 1.36;
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var ruler = document.createElement("div");
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ruler.style.cssText =
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"position:absolute;left:-99999px;top:0;white-space:nowrap;visibility:hidden;" +
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'font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-weight:700;' +
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"text-transform:uppercase;letter-spacing:0.005em;line-height:0.78";
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world.appendChild(ruler);
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var box = null;
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WORDS.forEach(function (wd, i) {
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var fs = i === 0 ? BASE : (box.y1 - box.y0) * RATIO;
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ruler.style.fontSize = fs + "px";
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ruler.textContent = wd.text;
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var w = ruler.getBoundingClientRect().width;
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var h = fs * 0.78;
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var gap = fs * 0.07;
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var x, y;
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if (i === 0) {
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x = 0;
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y = 0;
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} else if ((box.x1 - box.x0) / (box.y1 - box.y0) < FRAME_W / FRAME_H) {
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/* block is narrower than the frame, so grow sideways: to the right of
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everything, sitting on the same baseline */
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x = box.x1 + gap;
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y = box.y1 - h;
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} else {
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/* block is already wide enough, so grow downward: onto a new line under
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everything, left edges aligned */
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x = box.x0;
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y = box.y1 + gap;
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}
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wd.fs = fs;
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wd.x = x;
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wd.y = y;
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box = box
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? {
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x0: Math.min(box.x0, x),
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y0: Math.min(box.y0, y),
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x1: Math.max(box.x1, x + w),
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y1: Math.max(box.y1, y + h),
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}
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: { x0: x, y0: y, x1: x + w, y1: y + h };
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wd.box = { x0: box.x0, y0: box.y0, x1: box.x1, y1: box.y1 };
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});
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world.removeChild(ruler);
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var FULL = box;
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function poseFor(b, margin) {
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var bw = (b.x1 - b.x0) * margin;
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var bh = (b.y1 - b.y0) * margin;
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var s = Math.min(FRAME_W / bw, FRAME_H / bh);
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return {
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x: FRAME_W / 2 - (s * (b.x0 + b.x1)) / 2,
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y: FRAME_H / 2 - (s * (b.y0 + b.y1)) / 2,
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scale: s,
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};
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}
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var els = WORDS.map(function (wd) {
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var el = document.createElement("div");
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el.className = "cf-word" + (wd.accent ? " is-accent" : "");
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el.textContent = wd.text;
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el.style.left = wd.x + "px";
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el.style.top = wd.y + "px";
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el.style.fontSize = wd.fs + "px";
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world.appendChild(el);
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return el;
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});
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/* Re-derive every framing box from what the browser actually laid out, so
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the camera is fitted to real ink and never to arithmetic that drifted. */
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var run = null;
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els.forEach(function (el, i) {
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var r = {
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x0: el.offsetLeft,
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y0: el.offsetTop,
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x1: el.offsetLeft + el.offsetWidth,
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y1: el.offsetTop + el.offsetHeight,
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};
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run = run
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? {
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x0: Math.min(run.x0, r.x0),
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y0: Math.min(run.y0, r.y0),
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x1: Math.max(run.x1, r.x1),
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y1: Math.max(run.y1, r.y1),
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}
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: r;
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WORDS[i].box = { x0: run.x0, y0: run.y0, x1: run.x1, y1: run.y1 };
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});
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FULL = run;
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/* Rest state is pinned outside the timeline. */
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var first = poseFor(WORDS[0].box, MARGIN);
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gsap.set(world, {
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transformOrigin: "0 0",
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x: first.x,
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y: first.y,
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scale: first.scale,
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});
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gsap.set(els, { opacity: 0, "--k": 0 });
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gsap.set(world, { "--amt": "0px" });
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/* The first word is already on the page when the shot opens, so frame zero
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is never empty. */
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gsap.set(els[0], { opacity: 1 });
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var tl = gsap.timeline({ paused: true });
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/* Peak smear at the rim of the frame, in screen pixels. */
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var BLUR = FRAME_W * 0.026;
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var HALF_DIAG = Math.sqrt(FRAME_W * FRAME_W + FRAME_H * FRAME_H) / 2;
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/* Radial blur, the way a real zoom smears: a point far from the centre of
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the move sweeps across more of the frame than one sitting on it, so it
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streaks more. Each word gets its own share, --k, of one shared amount,
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--amt, which is the only thing that animates. The share is fixed for the
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length of a move and set with the camera, so this stays one tween per
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move rather than one per word per move. --amt is authored in world units,
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because a filter on a scaled child is applied before the scale, so the
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screen blur has to be divided back out by the camera scale. */
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function smear(centre, scale, count, at, up, down, peak) {
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for (var j = 0; j < count; j++) {
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var el = els[j];
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var cx = el.offsetLeft + el.offsetWidth / 2;
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var cy = el.offsetTop + el.offsetHeight / 2;
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var d =
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(scale *
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Math.sqrt(
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(cx - centre.x) * (cx - centre.x) + (cy - centre.y) * (cy - centre.y),
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)) /
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HALF_DIAG;
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tl.set(el, { "--k": (0.2 + 1.15 * Math.min(1, d)).toFixed(3) }, at);
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}
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var amt = peak / scale;
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tl.fromTo(
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world,
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{ "--amt": "0px" },
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{ "--amt": amt + "px", duration: up, ease: EASE_BLUR_UP },
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at,
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);
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tl.to(world, { "--amt": "0px", duration: down, ease: EASE_BLUR_DOWN }, at + up);
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}
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WORDS.forEach(function (wd, i) {
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var t = i * STEP;
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if (i === 0) return;
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tl.fromTo(els[i], { opacity: 0 }, { opacity: 1, duration: 0.16, ease: EASE_INK }, t);
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var p = poseFor(wd.box, MARGIN);
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tl.to(world, { x: p.x, y: p.y, scale: p.scale, duration: MOVE, ease: EASE_STEP }, t);
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smear(
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{ x: (wd.box.x0 + wd.box.x1) / 2, y: (wd.box.y0 + wd.box.y1) / 2 },
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p.scale,
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i + 1,
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t,
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MOVE * 0.24,
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MOVE * 0.44,
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BLUR,
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);
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});
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/* The resolve: the same pull back, carried all the way out. */
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var wide = poseFor(FULL, 1.2);
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var wideAt = (WORDS.length - 1) * STEP + 0.62;
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tl.to(
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world,
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{
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x: wide.x,
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y: wide.y,
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scale: wide.scale,
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duration: 0.94,
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ease: EASE_WIDE,
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},
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wideAt,
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);
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smear(
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{ x: (FULL.x0 + FULL.x1) / 2, y: (FULL.y0 + FULL.y1) / 2 },
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wide.scale,
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els.length,
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wideAt,
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0.3,
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0.58,
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BLUR * 0.8,
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);
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tl.set({}, {}, DUR);
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tl.seek(0);
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window.__timelines = window.__timelines || {};
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window.__timelines["caption-camera-follow"] = tl;
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})();
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</script>
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</div>
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</template>
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</body>
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</html>
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