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Revert "feat(registry): the video-primitive moves, documented and customisable (#3090)" (#3162)

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This reverts commit 3b53bfd2f7.
This commit is contained in:
Miguel Ángel
2026-08-10 14:47:47 -04:00
committed by GitHub
parent 3b53bfd2f7
commit c86d4013f5
2328 changed files with 5906 additions and 458525 deletions
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registry/components/particle-image-reveal/particle-image-reveal.html
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<!doctype html>
<!--
particle-image-reveal: HyperFrames video primitive (intros & reveals)
A seeded deterministic particle field materializes a supplied image: accent
particles converge and settle across the frame while the image reveals
beneath them (left-to-right wipe or center iris, matching the particle
sweep), the trail thinning until the last particle lands and the image
holds clean.
The image is a SLOT. Callers supply content by placing an inert template
anywhere in the HOST page (templates never render, and the runtime wipes
the host clip's own children on mount, so the slot lives at document
level):
<template data-slot="particle-image-reveal-image"> ... </template>
Slot content may be an <img>, a muted <video>, or arbitrary HTML; direct
img/video children are stretched to cover the stage. When no slot exists,
the primitive renders a token monogram: a surface tile with one display
glyph, drawn entirely from contract tokens.
Variables (declared in data-composition-variables below):
- density ("low" | "med" | "high", default "med"): particle count.
- direction ("ltr" | "center", default "ltr"): ltr sweeps the reveal
left to right; center opens an iris from the middle outward.
- accent ("green" | "blue" | "violet", default "green"): green rides
--brand, blue rides --accent, violet rides --accent-2.
- exit ("none" | "fade" | "up", default "none"): frame roots own
transitions; the default holds the final frame to the last pixel.
Envelope, fixed IN and OUT with elastic HOLD only (never timeScale):
IN_BASE = 2.80s particles converge, image reveals, trail thins to zero
HOLD = max(0, D - IN - OUT); truly still: any fractional transform
drift would re-raster the slot/canvas layer at seek-history-
dependent subpixel offsets and break byte-identical frames
OUT_BASE = 0.45s only when exit != none
If D < IN_BASE + OUT_BASE, IN and OUT compress together.
Determinism (canvas 2D law): one per-particle attribute table is computed
exactly once during synchronous timeline construction from fixed LCG seed
0x50a71c1e. Every painted frame is a pure function of (that table, the
timeline's current time): the timeline's onUpdate clears the canvas and
redraws every particle from scratch. No Math.random, no wall clock, no
incremental state, no requestAnimationFrame. Eventful seeks
(suppressEvents=false, the engine's render path) repaint identically in
any order and either direction; by the end of IN every particle's alpha
is exactly zero, so the HOLD canvas is one clear rect.
Mount contract: the runtime clones only this template. #root fills the
host box (no data-width/data-height, container-type: size, cqmin units),
is styled via #root only, and registers one paused timeline under the
LITERAL "particle-image-reveal" key. All DOM state is set with explicit
endpoints (gsap.set + fromTo) so any seek order lands identical frames.
-->
<html
lang="en"
data-composition-id="particle-image-reveal"
data-composition-duration="4"
data-composition-variables='[
{ "id": "density", "type": "enum", "role": "style", "label": "Density", "description": "Particle count for the converging field.", "default": "med", "options": [{ "value": "low", "label": "Low" }, { "value": "med", "label": "Medium" }, { "value": "high", "label": "High" }] },
{ "id": "direction", "type": "enum", "role": "timing", "label": "Direction", "description": "ltr sweeps the reveal left to right; center opens an iris from the middle outward.", "default": "ltr", "options": [{ "value": "ltr", "label": "Left to right" }, { "value": "center", "label": "Center out" }] },
{ "id": "accent", "type": "enum", "role": "style", "label": "Accent", "description": "Particle and monogram color: green rides --brand, blue rides --accent, violet rides --accent-2.", "default": "green", "options": [{ "value": "green", "label": "Green" }, { "value": "blue", "label": "Blue" }, { "value": "violet", "label": "Violet" }] },
{ "id": "exit", "type": "enum", "role": "timing", "label": "Exit", "description": "Optional departure. Default none: the revealed image holds until the frame cuts.", "default": "none", "options": [{ "value": "none", "label": "None" }, { "value": "fade", "label": "Fade" }, { "value": "up", "label": "Up" }] }
]'
>
<head>
<meta charset="UTF-8" />
<title>Particle Image Reveal</title>
</head>
<body>
<template>
<div id="root" data-composition-id="particle-image-reveal" data-duration="4" data-fps="30">
<style>
*,
*::before,
*::after {
box-sizing: border-box;
}
#root {
position: absolute;
inset: 0;
overflow: hidden;
container-type: size;
isolation: isolate;
color: var(--fg, #f8fafc);
font-family: var(--font-display, "Inter", system-ui, sans-serif);
pointer-events: none;
}
.pir-clip {
position: absolute;
inset: 0;
overflow: hidden;
background: var(--bg, transparent);
}
.pir-stage {
position: absolute;
inset: 0;
will-change: transform, opacity;
}
.pir-image {
position: absolute;
inset: 0;
display: grid;
place-items: center;
overflow: hidden;
will-change: clip-path, opacity;
}
.pir-image > img,
.pir-image > video {
position: absolute;
inset: 0;
width: 100%;
height: 100%;
object-fit: cover;
}
.pir-monogram {
display: grid;
place-items: center;
width: 52cqmin;
height: 52cqmin;
border: 0.18cqmin solid
color-mix(in srgb, var(--pir-accent) 52%, var(--border, #475569));
border-radius: var(--radius, 3cqmin);
background: color-mix(in srgb, var(--surface, #14171c) 90%, var(--pir-accent));
box-shadow: 0 3cqh 9cqh color-mix(in srgb, var(--bg, #000000) 40%, transparent);
}
.pir-monogram-glyph {
color: var(--pir-accent);
font-size: 26cqmin;
font-weight: 600;
line-height: 1;
letter-spacing: 0.02em;
}
.pir-canvas {
position: absolute;
inset: 0;
width: 100%;
height: 100%;
}
</style>
<div
id="particle-image-reveal-clip"
class="pir-clip clip"
data-start="0"
data-duration="4"
data-track-index="0"
>
<div class="pir-stage">
<div class="pir-image">
<div class="pir-monogram">
<span class="pir-monogram-glyph" aria-hidden="true">H</span>
</div>
</div>
<canvas class="pir-canvas" aria-hidden="true"></canvas>
</div>
</div>
<script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
<script>
(function () {
"use strict";
var root = document.getElementById("root");
var stage = root.querySelector(".pir-stage");
var imageLayer = root.querySelector(".pir-image");
var canvas = root.querySelector(".pir-canvas");
var vars =
window.__hyperframes && window.__hyperframes.getVariables
? window.__hyperframes.getVariables()
: {};
var densityCounts = { low: 320, med: 640, high: 1100 };
var density = Object.prototype.hasOwnProperty.call(densityCounts, vars.density)
? vars.density
: "med";
var direction = vars.direction === "center" ? "center" : "ltr";
// Each enum choice routes to a DIFFERENT contract token so the
// variable stays meaningful under a theme.
var accentColors = {
green: "var(--brand, #71f5a7)",
blue: "var(--accent, #61a8ff)",
violet: "var(--accent-2, #c5a3ff)",
};
var accent = Object.prototype.hasOwnProperty.call(accentColors, vars.accent)
? vars.accent
: "green";
var exit = vars.exit === "fade" || vars.exit === "up" ? vars.exit : "none";
root.style.setProperty("--pir-accent", accentColors[accent]);
// SLOT. Caller templates live at HOST DOCUMENT level (the mount
// wipes host-clip children, and templates never render). The
// scoped document proxy filters queries to this composition's
// subtree, so the lookup deliberately goes through ownerDocument.
var hostDoc = root.ownerDocument;
var slotTemplate = null;
try {
slotTemplate = hostDoc.querySelector(
'template[data-slot="particle-image-reveal-image"]',
);
} catch (error) {
slotTemplate = null;
}
if (slotTemplate) {
imageLayer.querySelector(".pir-monogram").remove();
imageLayer.appendChild(hostDoc.importNode(slotTemplate.content, true));
}
// Envelope: fixed IN/OUT, elastic HOLD, never time-scaled.
var IN_BASE = 2.8;
var OUT_BASE = exit === "none" ? 0 : 0.45;
var duration = Math.max(0.001, parseFloat(root.dataset.duration || "4"));
var totalBase = Math.max(0.001, IN_BASE + OUT_BASE);
var scale = duration < totalBase ? duration / totalBase : 1;
var IN = IN_BASE * scale;
var OUT = OUT_BASE * scale;
var HOLD = Math.max(0, duration - (IN + OUT));
var OUT_START = IN + HOLD;
// Canvas raster basis is fixed once at mount. Elastic root: the
// host box decides the resolution; the same host always yields
// the same raster, so painted frames stay byte-stable.
var dpr = Math.min(2, Math.max(1, Number(window.devicePixelRatio) || 1));
var box = root.getBoundingClientRect();
var cssW = Math.max(1, Math.round(box.width) || 640);
var cssH = Math.max(1, Math.round(box.height) || 360);
canvas.width = Math.round(cssW * dpr);
canvas.height = Math.round(cssH * dpr);
var ctx = canvas.getContext("2d");
var minDim = Math.min(canvas.width, canvas.height);
// Resolve the accent token to a concrete color once at mount so
// canvas fills never depend on style recalc during seeks.
var probe = hostDoc.createElement("span");
probe.style.color = accentColors[accent];
root.appendChild(probe);
var particleColor = getComputedStyle(probe).color || "#71f5a7";
probe.remove();
// The LCG and every per-particle decision live here. This IIFE
// runs once before timeline construction, then only the table is
// read. Particle state at any time is a pure function of
// (table row, timeline time).
var COUNT = densityCounts[density];
var particles = (function () {
var state = 0x50a71c1e;
function next() {
state = (Math.imul(1664525, state) + 1013904223) >>> 0;
return state / 4294967296;
}
var rows = [];
for (var i = 0; i < COUNT; i += 1) {
var tx = next();
var ty = next();
var key =
direction === "center"
? Math.min(1, Math.hypot(tx - 0.5, ty - 0.5) / 0.7071)
: tx;
// Arrival and birth are fractions of IN. Arrivals sweep with
// the reveal front; every fade completes by p = 1 exactly.
var arrive = 0.24 + 0.66 * key + 0.04 * next();
var travel = 0.2 + 0.12 * next();
var fade = 0.05 + 0.04 * next();
var angle;
if (direction === "center") {
// Converge inward: start displaced radially outward.
angle = Math.atan2(ty - 0.5, tx - 0.5);
if (tx === 0.5 && ty === 0.5) angle = next() * Math.PI * 2;
} else {
// Fly in from the left, within a 90 degree cone.
angle = Math.PI + (next() - 0.5) * (Math.PI / 2);
}
rows.push({
tx: tx,
ty: ty,
arrive: Math.min(0.94, arrive),
birth: Math.max(0, arrive - travel),
fade: fade,
offset: (0.06 + 0.14 * next()) * minDim,
ox: Math.cos(angle),
oy: Math.sin(angle),
radius: (0.28 + 0.62 * next()) * (minDim / 100),
dim: 0.55 + 0.45 * next(),
});
}
return rows;
})();
function clamp01(v) {
return v < 0 ? 0 : v > 1 ? 1 : v;
}
// Pure repaint: clear, then draw every particle from (row, p).
function paint(timeSeconds) {
ctx.clearRect(0, 0, canvas.width, canvas.height);
var p = IN > 0 ? clamp01(timeSeconds / IN) : 1;
// Global end clamp: the whole field is gone exactly at p = 1,
// and the trail thins as the reveal completes.
var endClamp = clamp01((1 - p) / 0.05);
if (endClamp === 0) return;
var thin = 1 - 0.4 * clamp01((p - 0.72) / 0.28);
ctx.fillStyle = particleColor;
for (var i = 0; i < particles.length; i += 1) {
var row = particles[i];
var u = clamp01((p - row.birth) / (row.arrive - row.birth));
if (u <= 0) continue;
var settled = clamp01((p - row.arrive) / row.fade);
var alpha = clamp01(u / 0.14) * (1 - settled) * endClamp * thin * row.dim * 0.92;
if (alpha <= 0.002) continue;
var e = 1 - Math.pow(1 - u, 3);
var x = row.tx * canvas.width + row.ox * row.offset * (1 - e);
var y = row.ty * canvas.height + row.oy * row.offset * (1 - e);
var r = row.radius * dpr * (0.6 + 0.4 * (1 - settled));
ctx.globalAlpha = alpha;
ctx.beginPath();
ctx.arc(x, y, r, 0, Math.PI * 2);
ctx.fill();
}
ctx.globalAlpha = 1;
}
// Image reveal geometry follows the particle sweep.
var clipFrom =
direction === "center" ? "circle(0% at 50% 50%)" : "inset(0% 100% 0% 0%)";
var clipTo = direction === "center" ? "circle(75% at 50% 50%)" : "inset(0% 0% 0% 0%)";
gsap.set(stage, { opacity: 1, y: "0cqh" });
gsap.set(imageLayer, { opacity: 0, clipPath: clipFrom });
var tl = gsap.timeline({
paused: true,
onUpdate: function () {
paint(tl.time());
},
});
// Anchor tween: an inert plain-object tween spanning the full
// authored duration. Without it the timeline would end at the
// last DOM tween (2.69s) and seeks into the hold would clamp
// tl.time() below IN, freezing the particle field short of its
// authored zero. It also guarantees onUpdate fires (and the
// canvas repaints) for every eventful seek anywhere in [0, D].
tl.to({ p: 0 }, { p: 1, duration: duration, ease: "none" }, 0);
// IN: the image fades up beneath the particles and reveals along
// the same front the arrivals sweep. Both endpoints authored.
tl.fromTo(
imageLayer,
{ opacity: 0 },
{ opacity: 1, duration: IN * 0.42, ease: "power2.out" },
IN * 0.18,
);
tl.fromTo(
imageLayer,
{ clipPath: clipFrom },
{ clipPath: clipTo, duration: IN * 0.74, ease: "power2.inOut" },
IN * 0.22,
);
// HOLD: truly still, deliberately. Fractional transform drift
// re-rasters the slot/canvas layer at history-dependent subpixel
// offsets and breaks byte-identical seeks (the K1 cq-transform
// trap); the reveal supplies the life, the hold supplies calm.
// OUT: optional departure; exit none holds until the frame cuts.
if (exit === "up") {
tl.to(stage, { y: "-4cqh", duration: OUT, ease: "power2.in" }, OUT_START);
tl.to(stage, { opacity: 0, duration: OUT, ease: "power2.in" }, OUT_START);
} else if (exit === "fade") {
tl.to(stage, { opacity: 0, duration: OUT, ease: "power2.in" }, OUT_START);
}
tl.seek(0);
paint(0);
window.__timelines = window.__timelines || {};
window.__timelines["particle-image-reveal"] = tl;
})();
</script>
</div>
</template>
</body>
</html>