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hyperframes/docs/catalog/blocks/vfx-shatter.mdx
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Miguel ÁngelandMiguel Angel Simon Sierra 1ae2067b8d feat(catalog): put the variables panel back, on payloads (#3199) 
* feat(catalog): put the variables panel back, on payloads

The panel drove its preview by loading an .html from docs/public, a type the
host does not publish, so it showed an empty frame in production and was
parked when the catalog was re-landed.

It now mounts the same JSON payload the plain player uses and re-mounts it as
values change, injecting them as window.__hfVariables into the composition head
before any of its scripts run, which is where the runtime reads overrides from.
Doing it in the markup rather than after load is what stops the composition
initialising with the wrong values first.

172 items with variables get the panel back; the playhead carries across a
change so a tweak mid-shot does not jump back to frame zero.

* fix(docs): drop the unused url form and the needless escapes

* fix(docs): the panel cannot reference a binding beside the export

* feat(catalog): make importing an SVG the obvious move

A reader arrives at this control with a shape, not with path data, and the
panel asked for the coordinates first. Import is now the primary action in a
drop target you can see is a drop target, and the raw path sits behind a
disclosure for anyone who wants it.

* feat(cli): let a fruitless catalog search report the gap

An agent that searches by meaning and finds nothing worth installing knows
something we do not: the name of a move the catalog is missing. There was no
way to tell us, so that knowledge was lost at the end of every run.

hyperframes feedback --search-miss "<query>" --wanted "<the move>" records it.
It carries no rating, so it never lands in the rating metric, and it is a
separate deliberate command rather than something catalog --query does on its
own: plain search still sends nothing, which is what the CLI promises.

--rating stops being required at the arg level, since a miss has no rating to
give. The check moved into the run body, where an absent one is now handled
rather than crashing on undefined.

* feat(cli): carry tuned variable values into the install snippet

Someone who tunes a block on its catalog page had no way to keep those values:
the install command was the same one everybody gets, and the tuning stayed on
the page.

hyperframes add <item> --vars '<json>' now prints a mount element carrying
data-variable-values, so the values land where the block is used.

They ride on the host rather than being written into the installed file. That
keeps the composition on disk byte-identical to the registry's, so a later
reinstall can still tell an edit from an update, and it lets two mounts of the
same block carry different values.

* fix(catalog): serve the item's own directory so runtime paths resolve

Some compositions assemble their asset URLs at run time —
"compositions/components/" + texture + ".png" for the texture masks, a font the
compiler pulled into _remote_media — and no scan of the markup can see a string
that does not exist until a script concatenates it. Those items either rendered
black or were dropped to a video that had never been uploaded.

Each item that needs it now has its prepared directory published, and its
payload carries a <base> pointing at it, so any relative path the composition
invents resolves. caption-texture renders its masks again, and
variable-font-flex has a preview at all for the first time: its MP4 and poster
are both 403.

Both layouts are published, because which one a composition asks for differs
per item, and a directory only earns that if it is under 2 MB. The 12 MB
texture sheet keeps the recorded video it already had.

* fix(catalog): let the variables panel actually drive the composition

Every control on the panel was inert. The values reached the composition and
nothing repainted, because the payload had already been compiled: compiling
inlines a mounted component and resolves its variables into the markup and CSS,
so by the time a reader turns a knob there is nothing left to change.

An item that declares variables now ships uncompiled, keeping the mount the
runtime loads at run time, which is the only state where data-variable-values
still means anything. The component travels inline as a data URI rather than a
sibling file, because .html is the one type the docs host will not publish. The
demo's own pinned values come off, so the reader's choices reach the mount
instead of losing to the values the demo picked to show itself off.

Measured on the rendered frame rather than the DOM: green rgb(98,207,144),
blue rgb(6,6,199), violet rgb(177,147,230), and back to green.

docs/public/catalog drops from 48 MB to 35 MB along the way, since an
uncompiled payload carries far less than an inlined one.

* feat(catalog): keep variable changes in the url

A reader who tuned a piece lost it on reload, and had nothing to send anyone.
The values now live in the query string, scoped by composition id so two links
never read each other,and only the ones that differ from the defaults are
written, so changing one knob gives a short URL rather than every variable
spelled out.

replaceState rather than pushState: dragging a slider should not leave a trail
of history entries. An unreadable value is ignored rather than thrown, so a
truncated or hand-edited link opens the piece at its defaults.

* fix(catalog): only rewrite the url when a value actually changed

* refactor(catalog): memoise the declared defaults on their content

* feat(catalog): offer an install command carrying the tuned values

The Install block is generated before anyone touches a knob, so it can only
ever print the plain command. Someone who spent a minute tuning a piece copied
it and got the defaults back.

The panel now carries its own command in the Snippet tab, with --vars holding
exactly the values that differ. An untouched piece still offers the same short
command, so nothing gets noisier for the common case.

* fix(catalog): a piece with nothing to render is a skip, not a failure

caption-blend-difference is a stylesheet and a paragraph of prose — a class you
add to your own captions, with no standalone scene to show. The generator
treated that as a build failure, so every run ended by reporting something
broken when nothing was.

It now reports the shape it is and keeps its recorded video, which is the only
honest preview such an item has. A genuine render failure still throws.

* fix(catalog): restore variables from the url on a cold load

A shared link opened at the defaults. The first render happens on the server,
where there is no window to read the query string from, and React then hydrates
against that markup and never revisits it — so the values only appeared once you
touched a control.

The URL is read again after mount, which is the first moment it exists. The
value is also escaped once now rather than twice: URLSearchParams already
decodes on the way out, and decoding a second time turned an SVG path full of
percent-escapes into something that no longer parsed, besides doubling the
length of every link.

* fix(catalog): mount the preview with the values a link carried

The frame was built from the declared defaults and the shared values were
posted to it afterwards, which is too late for anything the composition reads
once at init: a path arrived after the mark had already been drawn from the
default one, so a link looked right in the panel and wrong on screen.

* feat(catalog): the install command follows the values you tuned

Copying the Install line gave the plain command back, because that block is
generated before anyone touches a knob and had no way to know what changed. The
tuned command only existed in the panel Snippet tab, which is not where anyone
looks for it.

The line now reads the same query string the panel writes, so the two agree
without either component knowing the other exists, and a shared link carries the
right command too. replaceState fires no event, so the panel announces its own
writes.

* fix(catalog): send a text variable to the preview once it is finished

Every other control in the explorer reports a whole value on every event: a
slider at any position is a position, a swatch is a colour. A text field is
not. Typing v3 into a badge posted v first, so the preview remounted and
rendered a composition built from half a word.

The post now waits while a text field has focus and goes out when the edit is
committed, with Enter or by clicking away. The field itself is unchanged and
still tracks every keystroke.

---------

Co-authored-by: Miguel Angel Simon Sierra <miguelangelsi07@gmail.com>
2026-08-10 22:40:01 -04:00

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---
title: "Shatter"
description: "VFX composition block"
---
import { InstallCommand } from "/snippets/install-command.jsx";
<video className="w-full aspect-video rounded-xl object-cover bg-zinc-100 dark:bg-zinc-800" src="https://static.heygen.ai/hyperframes-oss/docs/images/catalog/blocks/vfx-shatter.mp4" poster="https://static.heygen.ai/hyperframes-oss/docs/images/catalog/blocks/vfx-shatter.png" autoPlay muted loop playsInline />
## Install
<InstallCommand command="npx hyperframes add vfx-shatter" item="vfx-shatter" />
That writes one file: `compositions/vfx-shatter.html`.
<Danger>
Live preview needs the `chrome://flags/#canvas-draw-element` flag switched on.
Without it this item's screen renders black. Rendering from the CLI switches
it on for you. [How it works](/guides/html-in-canvas)
</Danger>
## Source
<Accordion title={`vfx-shatter.html`}>
```html
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=1920, height=1080" />
<title>HTML Glass Shatter</title>
<link
href="https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap"
rel="stylesheet"
/>
<script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/three@0.147.0/build/three.min.js"></script>
<style>
*,
*::before,
*::after {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
background: #000;
overflow: hidden;
font-family: "Inter", system-ui, sans-serif;
}
#root {
position: relative;
width: 1920px;
height: 1080px;
overflow: hidden;
background: #06080d;
}
#scene-canvas {
position: absolute;
top: 0;
left: 0;
width: 1920px;
height: 1080px;
}
.panel {
position: absolute;
top: 0;
left: 0;
overflow: hidden;
color: #fff;
}
/* ── Panel A: Write HTML, Render Video ─────────────────────────── */
.panel-a-inner {
width: 100%;
height: 100%;
background: linear-gradient(160deg, #0a0c14 0%, #0d1117 40%, #111820 100%);
display: flex;
flex-direction: column;
padding: 80px 120px;
gap: 0;
position: relative;
overflow: hidden;
}
.panel-a-inner::before {
content: "";
position: absolute;
top: -200px;
right: -200px;
width: 600px;
height: 600px;
background: radial-gradient(circle, rgba(56, 189, 248, 0.06) 0%, transparent 70%);
pointer-events: none;
}
.panel-a-inner::after {
content: "";
position: absolute;
bottom: -150px;
left: -150px;
width: 500px;
height: 500px;
background: radial-gradient(circle, rgba(139, 92, 246, 0.05) 0%, transparent 70%);
pointer-events: none;
}
.pa-badge {
display: inline-flex;
align-items: center;
gap: 8px;
padding: 8px 20px;
background: rgba(56, 189, 248, 0.08);
border: 1px solid rgba(56, 189, 248, 0.15);
border-radius: 100px;
font-size: 14px;
font-weight: 600;
color: #38bdf8;
letter-spacing: 1.5px;
text-transform: uppercase;
width: fit-content;
margin-bottom: 40px;
}
.pa-badge-dot {
width: 6px;
height: 6px;
border-radius: 50%;
background: #38bdf8;
}
.pa-headline {
font-size: 88px;
font-weight: 800;
letter-spacing: -3px;
line-height: 1;
color: #f0f4f8;
margin-bottom: 48px;
max-width: 1100px;
}
.pa-headline em {
font-style: normal;
color: #38bdf8;
}
.pa-chart {
display: flex;
align-items: flex-end;
gap: 40px;
margin-bottom: 56px;
}
.pa-chart-group {
display: flex;
flex-direction: column;
align-items: center;
gap: 12px;
}
.pa-chart-bars {
display: flex;
align-items: flex-end;
gap: 8px;
height: 160px;
}
.pa-bar {
width: 64px;
border-radius: 6px 6px 0 0;
}
.pa-bar-v1 {
height: 60px;
background: rgba(255, 255, 255, 0.08);
border: 1px solid rgba(255, 255, 255, 0.06);
}
.pa-bar-v2 {
height: 150px;
background: linear-gradient(to top, #38bdf8, #818cf8);
}
.pa-chart-label {
font-size: 14px;
color: rgba(255, 255, 255, 0.4);
font-weight: 500;
}
.pa-chart-sublabel {
font-size: 13px;
font-weight: 600;
}
.pa-chart-sublabel.dim {
color: rgba(255, 255, 255, 0.25);
}
.pa-chart-sublabel.lit {
color: #38bdf8;
}
.pa-features {
display: flex;
gap: 32px;
margin-bottom: 56px;
}
.pa-feature {
display: flex;
align-items: flex-start;
gap: 14px;
flex: 1;
}
.pa-feature-icon {
width: 44px;
height: 44px;
border-radius: 10px;
background: rgba(56, 189, 248, 0.08);
border: 1px solid rgba(56, 189, 248, 0.12);
display: flex;
align-items: center;
justify-content: center;
font-size: 20px;
flex-shrink: 0;
color: #38bdf8;
}
.pa-feature-text h3 {
font-size: 16px;
font-weight: 600;
color: #e2e8f0;
margin-bottom: 4px;
}
.pa-feature-text p {
font-size: 13px;
color: rgba(255, 255, 255, 0.35);
line-height: 1.5;
}
.pa-cta {
display: inline-flex;
align-items: center;
gap: 10px;
padding: 16px 40px;
background: linear-gradient(135deg, #38bdf8, #818cf8);
border-radius: 12px;
font-size: 18px;
font-weight: 700;
color: #fff;
border: none;
width: fit-content;
letter-spacing: -0.3px;
}
/* ── Panel B: Welcome to v2.0 ──────────────────────────── */
.panel-b-inner {
width: 100%;
height: 100%;
background: linear-gradient(160deg, #0a0f1a 0%, #0c1220 50%, #0f1628 100%);
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
padding: 80px 120px;
gap: 48px;
position: relative;
overflow: hidden;
}
.pb-confetti {
position: absolute;
inset: 0;
overflow: hidden;
pointer-events: none;
}
.pb-dot {
position: absolute;
border-radius: 50%;
opacity: 0.12;
}
.pb-badge {
display: inline-flex;
align-items: center;
gap: 8px;
padding: 10px 24px;
background: rgba(52, 211, 153, 0.08);
border: 1px solid rgba(52, 211, 153, 0.2);
border-radius: 100px;
font-size: 15px;
font-weight: 600;
color: #34d399;
letter-spacing: 1px;
}
.pb-headline {
font-size: 80px;
font-weight: 800;
letter-spacing: -3px;
color: #f0f4f8;
text-align: center;
}
.pb-metrics {
display: flex;
gap: 48px;
}
.pb-metric {
text-align: center;
padding: 32px 48px;
background: rgba(255, 255, 255, 0.03);
border: 1px solid rgba(255, 255, 255, 0.06);
border-radius: 16px;
min-width: 220px;
}
.pb-metric-value {
font-size: 52px;
font-weight: 800;
letter-spacing: -2px;
margin-bottom: 8px;
}
.pb-metric-value.green {
color: #34d399;
}
.pb-metric-value.blue {
color: #38bdf8;
}
.pb-metric-value.purple {
color: #a78bfa;
}
.pb-metric-label {
font-size: 15px;
color: rgba(255, 255, 255, 0.4);
font-weight: 500;
}
.pb-cta {
display: inline-flex;
align-items: center;
gap: 10px;
padding: 16px 40px;
background: linear-gradient(135deg, #34d399, #38bdf8);
border-radius: 12px;
font-size: 18px;
font-weight: 700;
color: #fff;
border: none;
letter-spacing: -0.3px;
}
/* ── Error Overlay ─────────────────────────────────────── */
#error-overlay {
position: absolute;
inset: 0;
background: #06080d;
display: none;
align-items: center;
justify-content: center;
z-index: 100;
flex-direction: column;
gap: 16px;
}
#error-overlay.visible {
display: flex;
}
#error-overlay h2 {
font-size: 24px;
color: #f0f4f8;
font-weight: 600;
}
#error-overlay p {
font-size: 14px;
color: rgba(255, 255, 255, 0.5);
max-width: 480px;
text-align: center;
line-height: 1.6;
}
#error-overlay code {
background: rgba(255, 255, 255, 0.1);
padding: 2px 8px;
border-radius: 4px;
font-size: 13px;
}
</style>
</head>
<body>
<div
id="root"
data-composition-id="glass-shatter"
data-width="1920"
data-height="1080"
data-start="0"
data-duration="12"
data-root="true"
>
<!-- Capture canvas: Panel A -->
<canvas
id="cap-a"
layoutsubtree
width="1920"
height="1080"
style="
position: absolute;
top: 0;
left: 0;
width: 1920px;
height: 1080px;
z-index: -1;
pointer-events: none;
"
>
<section class="panel" id="panel-a" data-panel-a style="width: 1920px; height: 1080px">
<div class="panel-a-inner">
<div class="pa-badge">
<span class="pa-badge-dot"></span>
Write HTML, Render Video
</div>
<h1 class="pa-headline">Everything you loved.<br /><em>Now 10x faster.</em></h1>
<div class="pa-chart">
<div class="pa-chart-group">
<div class="pa-chart-bars">
<div class="pa-bar pa-bar-v1"></div>
<div class="pa-bar pa-bar-v2"></div>
</div>
<div class="pa-chart-label">Render Speed</div>
<div style="display: flex; gap: 16px">
<span class="pa-chart-sublabel dim">v1</span>
<span class="pa-chart-sublabel lit">v2</span>
</div>
</div>
<div class="pa-chart-group">
<div class="pa-chart-bars">
<div class="pa-bar pa-bar-v1" style="height: 90px"></div>
<div class="pa-bar pa-bar-v2" style="height: 145px"></div>
</div>
<div class="pa-chart-label">Throughput</div>
<div style="display: flex; gap: 16px">
<span class="pa-chart-sublabel dim">v1</span>
<span class="pa-chart-sublabel lit">v2</span>
</div>
</div>
<div class="pa-chart-group">
<div class="pa-chart-bars">
<div class="pa-bar pa-bar-v1" style="height: 110px"></div>
<div class="pa-bar pa-bar-v2" style="height: 155px"></div>
</div>
<div class="pa-chart-label">Reliability</div>
<div style="display: flex; gap: 16px">
<span class="pa-chart-sublabel dim">v1</span>
<span class="pa-chart-sublabel lit">v2</span>
</div>
</div>
</div>
<div class="pa-features">
<div class="pa-feature">
<div class="pa-feature-icon">&#9889;</div>
<div class="pa-feature-text">
<h3>Instant Deploys</h3>
<p>Zero-downtime rollouts in under 3 seconds globally.</p>
</div>
</div>
<div class="pa-feature">
<div class="pa-feature-icon">&#128274;</div>
<div class="pa-feature-text">
<h3>End-to-End Encryption</h3>
<p>AES-256 at rest, TLS 1.3 in transit. SOC2 certified.</p>
</div>
</div>
<div class="pa-feature">
<div class="pa-feature-icon">&#128200;</div>
<div class="pa-feature-text">
<h3>Real-time Analytics</h3>
<p>Sub-second queries across billions of events.</p>
</div>
</div>
</div>
<button class="pa-cta">Start Creating &rarr;</button>
</div>
</section>
</canvas>
<!-- Capture canvas: Panel B -->
<canvas
id="cap-b"
layoutsubtree
width="1920"
height="1080"
style="
position: absolute;
top: 0;
left: 0;
width: 1920px;
height: 1080px;
z-index: -1;
pointer-events: none;
"
>
<section class="panel" id="panel-b" data-panel-b style="width: 1920px; height: 1080px">
<div class="panel-b-inner">
<div class="pb-confetti" id="confetti-container"></div>
<div class="pb-badge">&#10003; Powered by HyperFrames</div>
<h1 class="pb-headline">HTML is Video</h1>
<div class="pb-metrics">
<div class="pb-metric">
<div class="pb-metric-value green">10x</div>
<div class="pb-metric-label">Render Speed</div>
</div>
<div class="pb-metric">
<div class="pb-metric-value blue">50%</div>
<div class="pb-metric-label">File Size</div>
</div>
<div class="pb-metric">
<div class="pb-metric-value purple">99.99%</div>
<div class="pb-metric-label">Reliability</div>
</div>
</div>
<button class="pb-cta">View Catalog &rarr;</button>
</div>
</section>
</canvas>
<!-- Three.js render target -->
<canvas id="scene-canvas" width="1920" height="1080"></canvas>
<!-- Error overlay -->
<div id="error-overlay">
<h2>HTML-in-Canvas Required</h2>
<p>
This composition requires the experimental CanvasDrawElement API. Enable it in Chrome or
Brave:
</p>
<p><code>chrome://flags/#canvas-draw-element</code></p>
</div>
<!-- Driver clip -->
<div
id="driver"
class="clip"
data-start="0"
data-duration="12"
data-track-index="0"
style="position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none"
></div>
</div>
<script>
var W = 1920,
H = 1080;
var DURATION = 12;
var SHARD_COUNT = 200;
var CRACK_START = 2.0;
var CRACK_END = 4.0;
var SHATTER_START = 4.0;
var SHATTER_SETTLE = 10.0;
// ── Feature Detection ──────────────────────────────────────────────
function isSupported() {
if (!("layoutSubtree" in document.createElement("canvas"))) return false;
var tc = document.createElement("canvas");
tc.setAttribute("layoutsubtree", "");
var ctx = tc.getContext("2d");
return ctx && typeof ctx.drawElementImage === "function";
}
if (!isSupported()) {
document.getElementById("error-overlay").classList.add("visible");
}
// ── Seeded PRNG (mulberry32, seed 42) ──────────────────────────────
function mulberry32(seed) {
return function () {
seed |= 0;
seed = (seed + 0x6d2b79f5) | 0;
var t = Math.imul(seed ^ (seed >>> 15), 1 | seed);
t = (t + Math.imul(t ^ (t >>> 7), 61 | t)) ^ t;
return ((t ^ (t >>> 14)) >>> 0) / 4294967296;
};
}
var rng = mulberry32(42);
// ── Generate confetti dots for Panel B ─────────────────────────────
var confettiEl = document.getElementById("confetti-container");
if (confettiEl) {
var dotColors = ["#34d399", "#38bdf8", "#a78bfa", "#f472b6", "#fbbf24"];
for (var d = 0; d < 60; d++) {
var dot = document.createElement("div");
dot.className = "pb-dot";
var sz = 4 + rng() * 12;
dot.style.width = sz + "px";
dot.style.height = sz + "px";
dot.style.left = rng() * 100 + "%";
dot.style.top = rng() * 100 + "%";
dot.style.background = dotColors[Math.floor(rng() * dotColors.length)];
dot.style.opacity = (0.06 + rng() * 0.12).toFixed(3);
confettiEl.appendChild(dot);
}
}
// ── Parse capture canvases ─────────────────────────────────────────
var capA = document.getElementById("cap-a");
var capB = document.getElementById("cap-b");
var ctxA = capA.getContext("2d");
var ctxB = capB.getContext("2d");
var panelA = document.getElementById("panel-a");
var panelB = document.getElementById("panel-b");
function capturePanels() {
ctxA.clearRect(0, 0, W, H);
ctxA.drawElementImage(panelA, 0, 0, W, H);
ctxB.clearRect(0, 0, W, H);
ctxB.drawElementImage(panelB, 0, 0, W, H);
}
// ── Voronoi Shard Generation ───────────────────────────────────────
// Generate ~200 seed points, compute Voronoi via brute force,
// triangulate each cell, extract per-shard geometry + UVs.
// Normalized coordinates: x in [0, aspectRatio], y in [0, 1]
var aspect = W / H;
// Generate seed points with weighted density toward center
var seeds = [];
for (var s = 0; s < SHARD_COUNT; s++) {
var sx, sy;
// 40% of points biased toward center for denser cracking there
if (s < SHARD_COUNT * 0.4) {
var angle = rng() * Math.PI * 2;
var radius = rng() * 0.35;
sx = 0.5 * aspect + Math.cos(angle) * radius * aspect;
sy = 0.5 + Math.sin(angle) * radius;
} else {
sx = rng() * aspect;
sy = rng();
}
seeds.push({ x: sx, y: sy });
}
// For each seed, compute a convex polygon via intersection of half-planes
// (simplified: sample angles around seed, find nearest boundary)
function computeShardPolygons(seeds) {
var shards = [];
var ANGLES = 32;
for (var i = 0; i < seeds.length; i++) {
var cx = seeds[i].x;
var cy = seeds[i].y;
var verts = [];
for (var a = 0; a < ANGLES; a++) {
var theta = (a / ANGLES) * Math.PI * 2;
var dx = Math.cos(theta);
var dy = Math.sin(theta);
// Find closest bisector intersection along this ray
var minT = 999;
for (var j = 0; j < seeds.length; j++) {
if (j === i) continue;
// Midpoint between seeds i and j
var mx = (cx + seeds[j].x) * 0.5;
var my = (cy + seeds[j].y) * 0.5;
// Normal of bisector: direction from i to j
var nx = seeds[j].x - cx;
var ny = seeds[j].y - cy;
// Ray-plane intersection: t = dot(m - c, n) / dot(d, n)
var denom = dx * nx + dy * ny;
if (denom <= 0.0001) continue;
var t = ((mx - cx) * nx + (my - cy) * ny) / denom;
if (t > 0.001 && t < minT) minT = t;
}
// Clamp to bounding box
if (dx > 0) {
var tb = (aspect - cx) / dx;
if (tb > 0 && tb < minT) minT = tb;
}
if (dx < 0) {
var tb2 = -cx / dx;
if (tb2 > 0 && tb2 < minT) minT = tb2;
}
if (dy > 0) {
var tb3 = (1 - cy) / dy;
if (tb3 > 0 && tb3 < minT) minT = tb3;
}
if (dy < 0) {
var tb4 = -cy / dy;
if (tb4 > 0 && tb4 < minT) minT = tb4;
}
if (minT < 998) {
verts.push({
x: cx + dx * minT,
y: cy + dy * minT,
});
}
}
if (verts.length < 3) continue;
// Sort vertices by angle from centroid
var centX = 0,
centY = 0;
for (var v = 0; v < verts.length; v++) {
centX += verts[v].x;
centY += verts[v].y;
}
centX /= verts.length;
centY /= verts.length;
verts.sort(function (a, b) {
return Math.atan2(a.y - centY, a.x - centX) - Math.atan2(b.y - centY, b.x - centX);
});
// Fan triangulation from centroid
var triangles = [];
for (var v2 = 0; v2 < verts.length; v2++) {
var next = (v2 + 1) % verts.length;
triangles.push([{ x: centX, y: centY }, verts[v2], verts[next]]);
}
shards.push({
seedX: cx,
seedY: cy,
centroidX: centX,
centroidY: centY,
triangles: triangles,
verts: verts,
});
}
return shards;
}
var shardData = computeShardPolygons(seeds);
// ── Three.js Scene ─────────────────────────────────────────────────
var sceneCanvas = document.getElementById("scene-canvas");
var renderer = new THREE.WebGLRenderer({
canvas: sceneCanvas,
antialias: true,
alpha: false,
preserveDrawingBuffer: true,
powerPreference: "high-performance",
});
renderer.setSize(W, H, false);
renderer.setPixelRatio(1);
renderer.toneMapping = THREE.NoToneMapping;
renderer.setClearColor(0x06080d, 1);
var scene = new THREE.Scene();
var camera = new THREE.OrthographicCamera(-aspect * 0.5, aspect * 0.5, 0.5, -0.5, 0.1, 100);
camera.position.z = 10;
// ── Textures from capture canvases ─────────────────────────────────
var texA = new THREE.CanvasTexture(capA);
texA.minFilter = THREE.LinearFilter;
texA.magFilter = THREE.LinearFilter;
texA.generateMipmaps = false;
var texB = new THREE.CanvasTexture(capB);
texB.minFilter = THREE.LinearFilter;
texB.magFilter = THREE.LinearFilter;
texB.generateMipmaps = false;
// ── Phase 1 & 2: Full plane with panel A + crack shader ────────────
var crackShaderMaterial = new THREE.ShaderMaterial({
uniforms: {
tPanel: { value: texA },
uCrackProgress: { value: 0.0 },
uAspect: { value: aspect },
uTime: { value: 0.0 },
},
vertexShader: [
"varying vec2 vUv;",
"void main() {",
" vUv = uv;",
" gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0);",
"}",
].join("\n"),
fragmentShader: [
"uniform sampler2D tPanel;",
"uniform float uCrackProgress;",
"uniform float uAspect;",
"uniform float uTime;",
"varying vec2 vUv;",
"",
"// Hash functions for Voronoi",
"vec2 hash22(vec2 p) {",
" p = vec2(dot(p, vec2(127.1, 311.7)), dot(p, vec2(269.5, 183.3)));",
" return fract(sin(p) * 43758.5453);",
"}",
"",
"// Voronoi distance for crack pattern",
"float voronoi(vec2 p) {",
" vec2 ip = floor(p);",
" vec2 fp = fract(p);",
" float d1 = 8.0;",
" float d2 = 8.0;",
" for (int x = -1; x <= 1; x++) {",
" for (int y = -1; y <= 1; y++) {",
" vec2 neighbor = vec2(float(x), float(y));",
" vec2 point = hash22(ip + neighbor);",
" vec2 diff = neighbor + point - fp;",
" float dist = length(diff);",
" if (dist < d1) {",
" d2 = d1;",
" d1 = dist;",
" } else if (dist < d2) {",
" d2 = dist;",
" }",
" }",
" }",
" return d2 - d1;",
"}",
"",
"void main() {",
" vec4 color = texture2D(tPanel, vUv);",
" ",
" if (uCrackProgress <= 0.0) {",
" gl_FragColor = color;",
" return;",
" }",
" ",
" // Distance from center (in UV space, aspect-corrected)",
" vec2 center = vec2(0.5, 0.5);",
" vec2 uv_aspect = vec2((vUv.x - 0.5) * uAspect, vUv.y - 0.5);",
" float distFromCenter = length(uv_aspect);",
" ",
" // Crack wavefront: radiates outward based on progress",
" float maxRadius = length(vec2(uAspect * 0.5, 0.5));",
" float wavefront = uCrackProgress * maxRadius * 1.4;",
" ",
" if (distFromCenter > wavefront) {",
" gl_FragColor = color;",
" return;",
" }",
" ",
" // Multi-scale Voronoi for cracks",
" vec2 crackUV = vUv * vec2(uAspect, 1.0);",
" float v1 = voronoi(crackUV * 8.0);",
" float v2 = voronoi(crackUV * 16.0);",
" float v3 = voronoi(crackUV * 4.0);",
" ",
" // Blend scales based on distance from center",
" float normalizedDist = distFromCenter / maxRadius;",
" float crackPattern = mix(v1, v2, smoothstep(0.0, 0.5, normalizedDist));",
" crackPattern = mix(crackPattern, v3, smoothstep(0.3, 0.8, normalizedDist) * 0.4);",
" ",
" // Crack intensity: thinner = more crack-like",
" float crackWidth = 0.04 + uCrackProgress * 0.02;",
" float crack = smoothstep(crackWidth, 0.0, crackPattern);",
" ",
" // Fade in based on wavefront proximity",
" float waveFade = smoothstep(wavefront, wavefront * 0.6, distFromCenter);",
" crack *= waveFade;",
" ",
" // Impact point glow",
" float impactGlow = exp(-distFromCenter * 6.0) * uCrackProgress * 0.6;",
" ",
" // Refraction distortion along cracks",
" vec2 distortUV = vUv;",
" if (crack > 0.1) {",
" vec2 offset = (hash22(floor(crackUV * 8.0)) - 0.5) * 0.008 * crack;",
" distortUV += offset;",
" }",
" vec4 distortedColor = texture2D(tPanel, distortUV);",
" ",
" // Composite: panel + bright crack lines + refraction",
" vec3 crackColor = vec3(0.85, 0.92, 1.0);",
" vec3 result = mix(distortedColor.rgb, crackColor, crack * 0.7);",
" result += vec3(impactGlow * 0.3, impactGlow * 0.4, impactGlow * 0.6);",
" ",
" // Glass surface highlight along cracks",
" float highlight = crack * 0.15 * (1.0 - normalizedDist);",
" result += vec3(highlight);",
" ",
" gl_FragColor = vec4(result, 1.0);",
"}",
].join("\n"),
transparent: false,
});
var fullPlane = new THREE.Mesh(new THREE.PlaneGeometry(aspect, 1), crackShaderMaterial);
fullPlane.position.set(0, 0, 0);
scene.add(fullPlane);
// ── Panel B: static plane behind shards ────────────────────────────
var panelBMesh = new THREE.Mesh(
new THREE.PlaneGeometry(aspect, 1),
new THREE.MeshBasicMaterial({ map: texB, side: THREE.FrontSide }),
);
panelBMesh.position.set(0, 0, -0.5);
panelBMesh.visible = false;
scene.add(panelBMesh);
// ── Phase 3: Shard meshes ──────────────────────────────────────────
// Each shard is a THREE.Mesh with its own geometry from the Voronoi subdivision.
// UV mapping samples the correct region of panel A's texture.
var shardMeshes = [];
var shardPhysics = [];
for (var si = 0; si < shardData.length; si++) {
var sd = shardData[si];
var tris = sd.triangles;
// Build merged geometry for all triangles in this shard
var positions = [];
var uvs = [];
for (var ti = 0; ti < tris.length; ti++) {
var tri = tris[ti];
for (var vi = 0; vi < 3; vi++) {
// Convert from Voronoi space (x in [0,aspect], y in [0,1]) to mesh space
var px = tri[vi].x - aspect * 0.5;
var py = -(tri[vi].y - 0.5); // flip Y for Three.js
positions.push(px, py, 0);
// UV: map from Voronoi space to [0,1]
var u = tri[vi].x / aspect;
var v = 1.0 - tri[vi].y; // flip V
uvs.push(u, v);
}
}
if (positions.length < 9) continue;
var geo = new THREE.BufferGeometry();
geo.setAttribute("position", new THREE.Float32BufferAttribute(positions, 3));
geo.setAttribute("uv", new THREE.Float32BufferAttribute(uvs, 2));
var mat = new THREE.MeshBasicMaterial({
map: texA,
side: THREE.DoubleSide,
transparent: true,
opacity: 1.0,
});
var mesh = new THREE.Mesh(geo, mat);
mesh.visible = false;
scene.add(mesh);
shardMeshes.push(mesh);
// Physics state for this shard
// Direction outward from center + random upward kick
var fromCenterX = sd.centroidX - aspect * 0.5;
var fromCenterY = sd.centroidY - 0.5;
var fromCenterLen =
Math.sqrt(fromCenterX * fromCenterX + fromCenterY * fromCenterY) + 0.001;
var outDirX = fromCenterX / fromCenterLen;
var outDirY = fromCenterY / fromCenterLen;
// Initial velocity: outward + upward component + randomness
var speed = 0.3 + rng() * 0.7;
var upKick = 0.2 + rng() * 0.5;
shardPhysics.push({
// Centroid in mesh-space for pivot
cx: sd.centroidX - aspect * 0.5,
cy: -(sd.centroidY - 0.5),
// Velocity
vx: outDirX * speed * (0.5 + rng() * 0.8),
vy: -outDirY * speed * (0.3 + rng() * 0.6) + upKick,
vz: (rng() - 0.5) * 0.3,
// Angular velocity
rx: (rng() - 0.5) * 4.0,
ry: (rng() - 0.5) * 4.0,
rz: (rng() - 0.5) * 6.0,
// Current state (written by physics step)
posX: 0,
posY: 0,
posZ: 0,
rotX: 0,
rotY: 0,
rotZ: 0,
opacity: 1.0,
settled: false,
});
}
// ── Physics Update ─────────────────────────────────────────────────
var GRAVITY = -2.5;
var FLOOR_Y = -0.8;
var DAMPING = 0.6;
var FRICTION = 0.92;
function updateShardPhysics(t) {
// t is time since shatter start (0 at SHATTER_START)
var dt = 1 / 30; // fixed step for determinism
var steps = Math.floor(t / dt);
for (var i = 0; i < shardPhysics.length; i++) {
var sp = shardPhysics[i];
// Reset and simulate from zero for determinism
var px = 0,
py = 0,
pz = 0;
var rx = 0,
ry = 0,
rz = 0;
var vx = sp.vx,
vy = sp.vy,
vz = sp.vz;
var avx = sp.rx,
avy = sp.ry,
avz = sp.rz;
var settled = false;
for (var step = 0; step < steps && !settled; step++) {
// Apply gravity
vy += GRAVITY * dt;
// Update position
px += vx * dt;
py += vy * dt;
pz += vz * dt;
// Update rotation
rx += avx * dt;
ry += avy * dt;
rz += avz * dt;
// Floor collision (relative to shard centroid)
var worldY = sp.cy + py;
if (worldY < FLOOR_Y && vy < 0) {
py = FLOOR_Y - sp.cy;
vy = -vy * DAMPING;
vx *= FRICTION;
vz *= FRICTION;
avx *= FRICTION;
avy *= FRICTION;
avz *= FRICTION;
// Settle if velocity is very small
if (Math.abs(vy) < 0.05) {
vy = 0;
settled = true;
}
}
}
sp.posX = px;
sp.posY = py;
sp.posZ = pz;
sp.rotX = rx;
sp.rotY = ry;
sp.rotZ = rz;
sp.settled = settled;
// Fade out shards at the very end
var fadeDuration = DURATION - SHATTER_SETTLE;
var elapsed = t + SHATTER_START;
if (elapsed > SHATTER_SETTLE) {
sp.opacity = Math.max(0, 1.0 - (elapsed - SHATTER_SETTLE) / fadeDuration);
} else {
sp.opacity = 1.0;
}
}
}
// ── Render State ───────────────────────────────────────────────────
var renderState = {
phase: 0, // 0=clean, 1=cracking, 2=shattered
crackProgress: 0,
shardsVisible: false,
panelBOpacity: 0,
};
function renderFrame(time) {
// Phase determination
if (time < CRACK_START) {
renderState.phase = 0;
} else if (time < SHATTER_START) {
renderState.phase = 1;
} else {
renderState.phase = 2;
}
// Capture HTML panels to texture each frame
capturePanels();
texA.needsUpdate = true;
texB.needsUpdate = true;
if (renderState.phase === 0) {
// Clean glass: show full plane, no cracks
fullPlane.visible = true;
crackShaderMaterial.uniforms.uCrackProgress.value = 0;
crackShaderMaterial.uniforms.uTime.value = time;
panelBMesh.visible = false;
// Hide all shards
for (var i = 0; i < shardMeshes.length; i++) {
shardMeshes[i].visible = false;
}
} else if (renderState.phase === 1) {
// Cracking: show full plane with crack shader
fullPlane.visible = true;
var crackT = (time - CRACK_START) / (CRACK_END - CRACK_START);
crackT = Math.max(0, Math.min(1, crackT));
// Ease in: slow start, accelerating
crackT = crackT * crackT;
crackShaderMaterial.uniforms.uCrackProgress.value = crackT;
crackShaderMaterial.uniforms.uTime.value = time;
panelBMesh.visible = false;
for (var i2 = 0; i2 < shardMeshes.length; i2++) {
shardMeshes[i2].visible = false;
}
} else {
// Shattered: hide full plane, show shards + panel B
fullPlane.visible = false;
panelBMesh.visible = true;
// Panel B fade-in
var panelBFadeT = Math.min(1, (time - SHATTER_START) / 1.5);
panelBFadeT = panelBFadeT * panelBFadeT * (3 - 2 * panelBFadeT); // smoothstep
panelBMesh.material.opacity = panelBFadeT;
panelBMesh.material.transparent = true;
// Update shard physics
var shatterTime = time - SHATTER_START;
updateShardPhysics(shatterTime);
// Apply physics to shard meshes
for (var i3 = 0; i3 < shardMeshes.length; i3++) {
var sm = shardMeshes[i3];
var sp = shardPhysics[i3];
sm.visible = true;
// Set position: centroid + physics offset
sm.position.set(sp.posX, sp.posY, sp.posZ + 0.01);
sm.rotation.set(sp.rotX, sp.rotY, sp.rotZ);
// Set pivot point to centroid
sm.position.x +=
sp.cx * (1 - Math.cos(sp.rotZ)) + sp.cy * Math.sin(sp.rotZ) - sp.cx + sp.posX;
sm.position.y +=
-sp.cx * Math.sin(sp.rotZ) + sp.cy * (1 - Math.cos(sp.rotZ)) - sp.cy + sp.posY;
// Simpler: just translate by physics offset, rotate around centroid
sm.position.set(sp.posX, sp.posY, sp.posZ + 0.01);
sm.rotation.set(sp.rotX, sp.rotY, sp.rotZ);
sm.material.opacity = sp.opacity;
sm.material.transparent = sp.opacity < 1.0;
}
}
renderer.render(scene, camera);
}
// ── GSAP Timeline ──────────────────────────────────────────────────
window.__timelines = window.__timelines || {};
var tl = gsap.timeline({ paused: true });
// Driver tween: spans full duration, renders each frame via onUpdate
var timeProxy = { t: 0 };
tl.to(
timeProxy,
{
t: DURATION,
duration: DURATION,
ease: "none",
onUpdate: function () {
renderFrame(timeProxy.t);
},
},
0,
);
window.__timelines["glass-shatter"] = tl;
// ── Deferred Init ──────────────────────────────────────────────────
setTimeout(function () {
capturePanels();
texA.needsUpdate = true;
texB.needsUpdate = true;
tl.seek(0);
}, 0);
</script>
</body>
</html>
```
</Accordion>
## Usage
After installing, add the block to your host composition:
```html
<div data-composition-id="vfx-shatter" data-composition-src="compositions/vfx-shatter.html" data-start="0" data-duration="12" data-track-index="1" data-width="1920" data-height="1080"></div>
```
{/* hf:generated-footer */}
Tagged `html-in-canvas` `webgl`.
## Related topics
- [Browse the complete Catalog](/catalog)
- [Add assets and Catalog items in Studio](/studio/assets-and-blocks)
- [Build a richer composition](/go-further)
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