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hyperframes/docs/catalog/components/modal-morph.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: "Modal Morph"
description: "A small card expands into a full panel, shared-element style: both layouts measured once at mount, the container morphs by transform only (never width/height tweens) while keyed children counter-scale and re-flow onto their own measured targets as pure functions of time."
---
import { InstallCommand } from "/snippets/install-command.jsx";
import { VariablesExplorer } from "/snippets/variables-explorer.jsx";
<VariablesExplorer
previewSrc="/public/catalog/components/modal-morph.json"
compositionId="modal-morph"
compositionSrc="compositions/components/modal-morph.html"
variables={[{"id":"from_scale","type":"number","role":"style","label":"From scale","description":"Multiplies the authored card footprint, clamped 0.5 to 1.5.","default":1},{"id":"expand_at","type":"number","role":"timing","label":"Expand at","description":"Seconds after mount when the card grows into the panel.","default":1.2},{"id":"register","type":"enum","role":"timing","label":"Register","description":"Morph feel. Snappy is faster with a settle capped at 1.02 of the target rect.","default":"calm","options":[{"value":"calm","label":"Calm"},{"value":"snappy","label":"Snappy"}]},{"id":"accent","type":"enum","role":"style","label":"Accent","description":"Accent 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 settled panel holds until the frame cuts.","default":"none","options":[{"value":"none","label":"None"},{"value":"fade","label":"Fade"},{"value":"up","label":"Up"}]}]}
>
```html modal-morph.html
<!doctype html>
<!--
modal-morph: HyperFrames video primitive (structure, Wave M9 experiment)
The shared-element grow: a small card expands into a full panel with its
children re-flowing continuously. FLIP-style: BOTH layouts (card and
panel) are real DOM, measured exactly ONCE at mount; from then on every
frame is a pure function of timeline time. The morph interpolates the
container rect and applies it as transform only (translate + scaleX/Y
from a fixed top-left origin); container width/height are NEVER
tweened. Children marked data-morph-key exist in both layouts; each
panel child counter-scales against the container and translates toward
the lerp of its own two measured rects, so content re-flows instead of
stretching. Panel-only furniture fades in late; the card crossfades out
early in the morph.
Card content is a SLOT. Callers supply content by placing an inert
template anywhere in the HOST page:
<template data-slot="modal-morph-card"> ... </template>
The slot content is cloned into BOTH the card body and the panel head.
Descendants carrying data-morph-key are paired across the two layouts;
slot content without keys is wrapped as one keyed block. With no slot,
the primitive renders token defaults (accent dot, display title line,
mono meta line) that re-flow from a stacked card to an inline panel
header row.
Variables (declared in data-composition-variables below):
- from_scale (number, default 1, clamped 0.5 to 1.5): multiplies the
authored card footprint before the one-time measurement.
- expand_at (number seconds, default 1.2): when the grow begins.
- register ("calm" | "snappy", default "calm"): calm is a smooth
inOut cubic; snappy is faster with a small settle that never
overshoots the target rect beyond 1.02.
- accent ("green" | "blue" | "violet", default "green"): green rides
--brand, blue rides --accent, violet rides --accent-2.
- exit ("none" | "fade" | "up", default "none").
Envelope, fixed IN and OUT with elastic HOLD only (never timeScale):
IN_BASE = expand_at + MORPH (0.95s calm, 0.6s snappy) + 0.15s
HOLD = max(0, D - IN - OUT)
OUT_BASE = 0.45s only when exit != none
If D < IN_BASE + OUT_BASE the whole envelope compresses together.
Determinism: layouts are measured once, synchronously, at mount; the
per-update apply recomputes every transform and opacity from tl.time()
alone (no Math.random, no wall clock, no incremental state). Eventful
seeks land identical frames in any order and either direction.
Mount contract: template-wrapped; #root fills the host box (no
data-width/height, container-type: size, cqmin units), styled via
#root only; one paused timeline under the LITERAL "modal-morph" key.
-->
<html
lang="en"
data-composition-id="modal-morph"
data-composition-duration="4"
data-composition-variables='[
{ "id": "from_scale", "type": "number", "role": "style", "label": "From scale", "description": "Multiplies the authored card footprint, clamped 0.5 to 1.5.", "default": 1 },
{ "id": "expand_at", "type": "number", "role": "timing", "label": "Expand at", "description": "Seconds after mount when the card grows into the panel.", "default": 1.2 },
{ "id": "register", "type": "enum", "role": "timing", "label": "Register", "description": "Morph feel. Snappy is faster with a settle capped at 1.02 of the target rect.", "default": "calm", "options": [{ "value": "calm", "label": "Calm" }, { "value": "snappy", "label": "Snappy" }] },
{ "id": "accent", "type": "enum", "role": "style", "label": "Accent", "description": "Accent 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 settled panel 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>Modal Morph</title>
</head>
<body>
<template>
<div id="root" data-composition-id="modal-morph" 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;
}
.mm-clip {
position: absolute;
inset: 0;
overflow: hidden;
background: var(--bg, transparent);
}
.mm-stage {
position: absolute;
inset: 0;
will-change: transform, opacity;
}
/* Card layout: the small shared element, centered. */
.mm-cardbox {
position: absolute;
inset: 0;
display: grid;
place-items: center;
}
.mm-card {
width: calc(36cqmin * var(--mm-from-scale, 1));
padding: var(--space-3, 3cqmin);
display: grid;
gap: var(--space-2, 2cqmin);
border: 0.18cqmin solid var(--border, #475569);
border-radius: var(--radius, 2.4cqmin);
background: var(--surface, #14171c);
box-shadow: 0 1.4cqmin 4.5cqmin color-mix(in srgb, var(--bg, #000000) 32%, transparent);
}
/* Panel layout: the destination surface. */
.mm-panel {
position: absolute;
left: 14cqw;
right: 14cqw;
top: 13cqh;
bottom: 13cqh;
padding: var(--space-3, 3cqmin);
display: grid;
grid-template-rows: auto 1fr auto;
gap: var(--space-3, 3cqmin);
border: 0.18cqmin solid var(--border, #475569);
border-radius: var(--radius, 2.4cqmin);
background: var(--surface, #14171c);
box-shadow: 0 2.2cqmin 7cqmin color-mix(in srgb, var(--bg, #000000) 36%, transparent);
}
.mm-panel-head {
display: flex;
align-items: center;
gap: var(--space-2, 2cqmin);
}
.mm-dot {
width: 3.4cqmin;
height: 3.4cqmin;
flex: none;
border-radius: 50%;
background: color-mix(in srgb, var(--fg, #f8fafc) 72%, transparent);
}
.mm-title {
height: 2.4cqmin;
width: 24cqmin;
border-radius: 1.2cqmin;
background: color-mix(in srgb, var(--fg, #f8fafc) 30%, transparent);
}
.mm-meta {
height: 1.5cqmin;
width: 15cqmin;
border-radius: 0.75cqmin;
background: color-mix(in srgb, var(--fg, #f8fafc) 14%, transparent);
}
.mm-card .mm-title {
width: 76%;
}
.mm-card .mm-meta {
width: 52%;
}
/* Panel-only furniture: fades in late in the morph. */
/* No will-change on morphing layers: cached composited rasters
from a scaled state leak pixel noise into out-of-order seeks. */
.mm-body {
display: grid;
grid-template-columns: repeat(3, minmax(0, 1fr));
gap: var(--space-2, 2cqmin);
align-content: stretch;
}
.mm-tile {
border: 0.16cqmin solid var(--border, #475569);
border-radius: calc(var(--radius, 2.4cqmin) * 0.7);
background: color-mix(in srgb, var(--fg, #f8fafc) 5%, transparent);
display: grid;
align-content: end;
gap: 1.2cqmin;
padding: var(--space-2, 2cqmin);
}
.mm-tile-line {
height: 1.3cqmin;
border-radius: 0.65cqmin;
background: color-mix(in srgb, var(--fg, #f8fafc) 16%, transparent);
}
.mm-tile-line.short {
width: 58%;
}
.mm-foot {
display: flex;
gap: var(--space-2, 2cqmin);
}
.mm-chip {
height: 3.4cqmin;
border-radius: 1.7cqmin;
padding: 0 2.4cqmin;
display: grid;
align-items: center;
border: 0.16cqmin solid var(--border, #475569);
font-family: var(--font-mono, ui-monospace, "SF Mono", Menlo, monospace);
font-size: 1.5cqmin;
font-weight: 500;
letter-spacing: 0.08em;
color: var(--muted, #94a3b8);
}
.mm-chip.lead {
border-color: color-mix(in srgb, var(--mm-accent) 55%, transparent);
color: var(--mm-accent);
}
</style>
<div
id="modal-morph-clip"
class="mm-clip clip"
data-start="0"
data-duration="4"
data-track-index="0"
>
<div class="mm-stage">
<div class="mm-cardbox">
<div class="mm-card">
<div class="mm-slot-host">
<div class="mm-dot" data-morph-key="dot"></div>
<div class="mm-title" data-morph-key="title"></div>
<div class="mm-meta" data-morph-key="meta"></div>
</div>
</div>
</div>
<div class="mm-panel">
<div class="mm-panel-head mm-slot-host">
<div class="mm-dot" data-morph-key="dot"></div>
<div class="mm-title" data-morph-key="title"></div>
<div class="mm-meta" data-morph-key="meta"></div>
</div>
<div class="mm-body">
<div class="mm-tile">
<div class="mm-tile-line"></div>
<div class="mm-tile-line short"></div>
</div>
<div class="mm-tile">
<div class="mm-tile-line"></div>
<div class="mm-tile-line short"></div>
</div>
<div class="mm-tile">
<div class="mm-tile-line"></div>
<div class="mm-tile-line short"></div>
</div>
</div>
<div class="mm-foot">
<div class="mm-chip lead">OPEN</div>
<div class="mm-chip">DETAILS</div>
</div>
</div>
</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(".mm-stage");
var card = root.querySelector(".mm-card");
var panel = root.querySelector(".mm-panel");
var vars =
window.__hyperframes && window.__hyperframes.getVariables
? window.__hyperframes.getVariables()
: {};
var fromScaleRaw = parseFloat(vars.from_scale);
var fromScale = isFinite(fromScaleRaw) ? Math.min(1.5, Math.max(0.5, fromScaleRaw)) : 1;
var expandRaw = parseFloat(vars.expand_at);
var expandVar = isFinite(expandRaw) ? Math.max(0.2, expandRaw) : 1.2;
var register = vars.register === "snappy" ? "snappy" : "calm";
var accentColors = {
green: "var(--brand, #52525b)",
blue: "var(--accent, #52525b)",
violet: "var(--accent-2, #52525b)",
};
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("--mm-accent", accentColors[accent]);
root.style.setProperty("--mm-from-scale", String(fromScale));
// SLOT: same content cloned into BOTH layouts so measured
// pairs exist for every key. Keyless slot content is wrapped
// as one keyed block.
var hostDoc = root.ownerDocument;
var slotTemplate = null;
try {
slotTemplate = hostDoc.querySelector('template[data-slot="modal-morph-card"]');
} catch (error) {
slotTemplate = null;
}
if (slotTemplate) {
var hosts = root.querySelectorAll(".mm-slot-host");
for (var h = 0; h < hosts.length; h += 1) {
var content = hostDoc.importNode(slotTemplate.content, true);
var probe = hostDoc.createElement("div");
probe.appendChild(content);
if (!probe.querySelector("[data-morph-key]")) {
probe.setAttribute("data-morph-key", "slot");
}
hosts[h].textContent = "";
hosts[h].appendChild(probe);
}
}
// ONE-TIME measurement of both real layouts (the FLIP "first"
// and "last"). Everything after this line is pure f(t).
var stageRect = stage.getBoundingClientRect();
function measure(el) {
var r = el.getBoundingClientRect();
return {
x: r.left - stageRect.left,
y: r.top - stageRect.top,
w: Math.max(1, r.width),
h: Math.max(1, r.height),
};
}
var cardRect = measure(card);
var panelRect = measure(panel);
function collectKids(container) {
var map = {};
var nodes = container.querySelectorAll("[data-morph-key]");
for (var i = 0; i < nodes.length; i += 1) {
map[nodes[i].getAttribute("data-morph-key")] = {
el: nodes[i],
rect: measure(nodes[i]),
};
}
return map;
}
var cardKids = collectKids(card);
var panelKids = collectKids(panel);
// Matched pairs: for each layer we keep, per child, its OWN
// layout rect (home) plus the counterpart rect (away).
function pairs(ownKids, otherKids) {
var list = [];
for (var key in ownKids) {
if (Object.prototype.hasOwnProperty.call(otherKids, key)) {
list.push({
el: ownKids[key].el,
home: ownKids[key].rect,
away: otherKids[key].rect,
});
}
}
return list;
}
var panelPairs = pairs(panelKids, cardKids);
var cardPairs = pairs(cardKids, panelKids);
var fades = panel.querySelectorAll(".mm-body, .mm-foot");
// Fixed origins so the rect math is exact.
gsap.set([card, panel], { transformOrigin: "0 0" });
for (var pp = 0; pp < panelPairs.length; pp += 1) {
gsap.set(panelPairs[pp].el, { transformOrigin: "0 0" });
}
for (var cp = 0; cp < cardPairs.length; cp += 1) {
gsap.set(cardPairs[cp].el, { transformOrigin: "0 0" });
}
// Envelope: fixed IN/OUT, elastic HOLD, never time-scaled.
var MORPH_BASE = register === "snappy" ? 0.6 : 0.95;
var duration = Math.max(0.001, parseFloat(root.dataset.duration || "4"));
var EXPAND_BASE = Math.min(expandVar, Math.max(0.2, duration - 0.6));
var IN_BASE = EXPAND_BASE + MORPH_BASE + 0.15;
var OUT_BASE = exit === "none" ? 0 : 0.45;
var totalBase = Math.max(0.001, IN_BASE + OUT_BASE);
var scale = duration < totalBase ? duration / totalBase : 1;
var EXPAND = EXPAND_BASE * scale;
var MORPH = MORPH_BASE * scale;
var IN = IN_BASE * scale;
var OUT = OUT_BASE * scale;
var HOLD = Math.max(0, duration - (IN + OUT));
var OUT_START = IN + HOLD;
var ENTER = 0.3 * scale;
function clamp01(v) {
return v < 0 ? 0 : v > 1 ? 1 : v;
}
// calm: cubic inOut, no overshoot.
function calmEase(u) {
return u < 0.5 ? 4 * u * u * u : 1 - 4 * (1 - u) * (1 - u) * (1 - u);
}
// snappy: back.out with c1 = 0.7; analytic max 1.0176, under
// the 1.02 cap (and interpolating the rect keeps the scale
// overshoot strictly below 2% of target).
function snappyEase(u) {
var c1 = 0.7;
var c3 = c1 + 1;
var v = u - 1;
return 1 + c3 * v * v * v + c1 * v * v;
}
var ease = register === "snappy" ? snappyEase : calmEase;
function lerp(a, b, p) {
return a + (b - a) * p;
}
function lerpRect(a, b, p) {
return {
x: lerp(a.x, b.x, p),
y: lerp(a.y, b.y, p),
w: lerp(a.w, b.w, p),
h: lerp(a.h, b.h, p),
};
}
// Apply one layer: container transformed onto rect R; each
// matched child counter-scaled and translated onto the lerp of
// its own two measured rects. Child x/y live in the scaled
// container space, hence the divisions.
function applyLayer(container, homeRect, kidPairs, R, p) {
var sx = R.w / homeRect.w;
var sy = R.h / homeRect.h;
gsap.set(container, {
x: R.x - homeRect.x,
y: R.y - homeRect.y,
scaleX: sx,
scaleY: sy,
});
for (var i = 0; i < kidPairs.length; i += 1) {
var pair = kidPairs[i];
var relHome = {
x: pair.home.x - homeRect.x,
y: pair.home.y - homeRect.y,
};
var want = lerpRect(pair.away, pair.home, container === panel ? p : 1 - p);
var baseX = R.x + relHome.x * sx;
var baseY = R.y + relHome.y * sy;
gsap.set(pair.el, {
x: (want.x - baseX) / sx,
y: (want.y - baseY) / sy,
scaleX: want.w / (pair.home.w * sx),
scaleY: want.h / (pair.home.h * sy),
});
}
}
// Pure per-update apply: every transform and opacity is a
// function of tl.time() alone. Writes are idempotent.
function applyTime(timeSeconds) {
var enter = clamp01(ENTER > 0 ? timeSeconds / ENTER : 1);
var u = clamp01(MORPH > 0 ? (timeSeconds - EXPAND) / MORPH : 1);
var p = ease(u);
var R = lerpRect(cardRect, panelRect, p);
applyLayer(panel, panelRect, panelPairs, R, p);
applyLayer(card, cardRect, cardPairs, R, p);
// Crossfade: card owns the pre-phase, hands off in the
// first 30% of the morph.
var hand = clamp01(u / 0.3);
gsap.set(card, { opacity: enter * (1 - hand) });
gsap.set(panel, { opacity: u <= 0 ? 0 : Math.max(0.001, hand) });
// Panel-only furniture: fades up over the back half.
var q = clamp01((u - 0.55) / 0.45);
var qe = 1 - (1 - q) * (1 - q);
for (var f = 0; f < fades.length; f += 1) {
gsap.set(fades[f], { opacity: qe, y: (1 - qe) * 12 });
}
}
gsap.set(stage, { opacity: 1, y: "0cqh" });
var tl = gsap.timeline({
paused: true,
onUpdate: function () {
applyTime(tl.time());
},
});
// Anchor tween: inert, spans [0, D] so onUpdate fires for
// every eventful seek and holds never clamp short.
tl.to({ p: 0 }, { p: 1, duration: duration, ease: "none" }, 0);
// OUT: optional departure; exit none holds until the cut.
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);
applyTime(0);
window.__timelines = window.__timelines || {};
window.__timelines["modal-morph"] = tl;
})();
</script>
</div>
</template>
</body>
</html>
```
</VariablesExplorer>
## Install
<InstallCommand command="npx hyperframes add modal-morph" item="modal-morph" />
That writes one file: `compositions/components/modal-morph.html`.
## Paste it into your composition
Open `compositions/components/modal-morph.html` and copy what is inside into your own composition.
A component has no size or duration of its own. It takes both from the composition
you paste it into.
## Variables
Every one of these has a default, so the piece works untouched. Set the ones you
want to change on the element:
| Variable | Default | Accepts | What it does |
| --- | --- | --- | --- |
| `from_scale` | `1` | number | Multiplies the authored card footprint, clamped 0.5 to 1.5. |
| `expand_at` | `1.2` | number | Seconds after mount when the card grows into the panel. |
| `register` | `calm` | `calm`, `snappy` | Morph feel. Snappy is faster with a settle capped at 1.02 of the target rect. |
| `accent` | `green` | `green`, `blue`, `violet` | Accent color: green rides --brand, blue rides --accent, violet rides --accent-2. |
| `exit` | `none` | `none`, `fade`, `up` | Optional departure. Default none: the settled panel holds until the frame cuts. |
Set them with `data-variable-values` on the element that mounts it. These are the
defaults, so this behaves exactly like the preview above until you change one:
```html wrap
<div
data-composition-id="modal-morph"
data-composition-src="compositions/components/modal-morph.html"
data-variable-values='{"from_scale":1,"expand_at":1.2,"register":"calm","accent":"green","exit":"none"}'
></div>
```
## Source
<Accordion title={`modal-morph.html`}>
```html
<!doctype html>
<!--
modal-morph: HyperFrames video primitive (structure, Wave M9 experiment)
The shared-element grow: a small card expands into a full panel with its
children re-flowing continuously. FLIP-style: BOTH layouts (card and
panel) are real DOM, measured exactly ONCE at mount; from then on every
frame is a pure function of timeline time. The morph interpolates the
container rect and applies it as transform only (translate + scaleX/Y
from a fixed top-left origin); container width/height are NEVER
tweened. Children marked data-morph-key exist in both layouts; each
panel child counter-scales against the container and translates toward
the lerp of its own two measured rects, so content re-flows instead of
stretching. Panel-only furniture fades in late; the card crossfades out
early in the morph.
Card content is a SLOT. Callers supply content by placing an inert
template anywhere in the HOST page:
<template data-slot="modal-morph-card"> ... </template>
The slot content is cloned into BOTH the card body and the panel head.
Descendants carrying data-morph-key are paired across the two layouts;
slot content without keys is wrapped as one keyed block. With no slot,
the primitive renders token defaults (accent dot, display title line,
mono meta line) that re-flow from a stacked card to an inline panel
header row.
Variables (declared in data-composition-variables below):
- from_scale (number, default 1, clamped 0.5 to 1.5): multiplies the
authored card footprint before the one-time measurement.
- expand_at (number seconds, default 1.2): when the grow begins.
- register ("calm" | "snappy", default "calm"): calm is a smooth
inOut cubic; snappy is faster with a small settle that never
overshoots the target rect beyond 1.02.
- accent ("green" | "blue" | "violet", default "green"): green rides
--brand, blue rides --accent, violet rides --accent-2.
- exit ("none" | "fade" | "up", default "none").
Envelope, fixed IN and OUT with elastic HOLD only (never timeScale):
IN_BASE = expand_at + MORPH (0.95s calm, 0.6s snappy) + 0.15s
HOLD = max(0, D - IN - OUT)
OUT_BASE = 0.45s only when exit != none
If D < IN_BASE + OUT_BASE the whole envelope compresses together.
Determinism: layouts are measured once, synchronously, at mount; the
per-update apply recomputes every transform and opacity from tl.time()
alone (no Math.random, no wall clock, no incremental state). Eventful
seeks land identical frames in any order and either direction.
Mount contract: template-wrapped; #root fills the host box (no
data-width/height, container-type: size, cqmin units), styled via
#root only; one paused timeline under the LITERAL "modal-morph" key.
-->
<html
lang="en"
data-composition-id="modal-morph"
data-composition-duration="4"
data-composition-variables='[
{ "id": "from_scale", "type": "number", "role": "style", "label": "From scale", "description": "Multiplies the authored card footprint, clamped 0.5 to 1.5.", "default": 1 },
{ "id": "expand_at", "type": "number", "role": "timing", "label": "Expand at", "description": "Seconds after mount when the card grows into the panel.", "default": 1.2 },
{ "id": "register", "type": "enum", "role": "timing", "label": "Register", "description": "Morph feel. Snappy is faster with a settle capped at 1.02 of the target rect.", "default": "calm", "options": [{ "value": "calm", "label": "Calm" }, { "value": "snappy", "label": "Snappy" }] },
{ "id": "accent", "type": "enum", "role": "style", "label": "Accent", "description": "Accent 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 settled panel 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>Modal Morph</title>
</head>
<body>
<template>
<div id="root" data-composition-id="modal-morph" 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;
}
.mm-clip {
position: absolute;
inset: 0;
overflow: hidden;
background: var(--bg, transparent);
}
.mm-stage {
position: absolute;
inset: 0;
will-change: transform, opacity;
}
/* Card layout: the small shared element, centered. */
.mm-cardbox {
position: absolute;
inset: 0;
display: grid;
place-items: center;
}
.mm-card {
width: calc(36cqmin * var(--mm-from-scale, 1));
padding: var(--space-3, 3cqmin);
display: grid;
gap: var(--space-2, 2cqmin);
border: 0.18cqmin solid var(--border, #475569);
border-radius: var(--radius, 2.4cqmin);
background: var(--surface, #14171c);
box-shadow: 0 1.4cqmin 4.5cqmin color-mix(in srgb, var(--bg, #000000) 32%, transparent);
}
/* Panel layout: the destination surface. */
.mm-panel {
position: absolute;
left: 14cqw;
right: 14cqw;
top: 13cqh;
bottom: 13cqh;
padding: var(--space-3, 3cqmin);
display: grid;
grid-template-rows: auto 1fr auto;
gap: var(--space-3, 3cqmin);
border: 0.18cqmin solid var(--border, #475569);
border-radius: var(--radius, 2.4cqmin);
background: var(--surface, #14171c);
box-shadow: 0 2.2cqmin 7cqmin color-mix(in srgb, var(--bg, #000000) 36%, transparent);
}
.mm-panel-head {
display: flex;
align-items: center;
gap: var(--space-2, 2cqmin);
}
.mm-dot {
width: 3.4cqmin;
height: 3.4cqmin;
flex: none;
border-radius: 50%;
background: color-mix(in srgb, var(--fg, #f8fafc) 72%, transparent);
}
.mm-title {
height: 2.4cqmin;
width: 24cqmin;
border-radius: 1.2cqmin;
background: color-mix(in srgb, var(--fg, #f8fafc) 30%, transparent);
}
.mm-meta {
height: 1.5cqmin;
width: 15cqmin;
border-radius: 0.75cqmin;
background: color-mix(in srgb, var(--fg, #f8fafc) 14%, transparent);
}
.mm-card .mm-title {
width: 76%;
}
.mm-card .mm-meta {
width: 52%;
}
/* Panel-only furniture: fades in late in the morph. */
/* No will-change on morphing layers: cached composited rasters
from a scaled state leak pixel noise into out-of-order seeks. */
.mm-body {
display: grid;
grid-template-columns: repeat(3, minmax(0, 1fr));
gap: var(--space-2, 2cqmin);
align-content: stretch;
}
.mm-tile {
border: 0.16cqmin solid var(--border, #475569);
border-radius: calc(var(--radius, 2.4cqmin) * 0.7);
background: color-mix(in srgb, var(--fg, #f8fafc) 5%, transparent);
display: grid;
align-content: end;
gap: 1.2cqmin;
padding: var(--space-2, 2cqmin);
}
.mm-tile-line {
height: 1.3cqmin;
border-radius: 0.65cqmin;
background: color-mix(in srgb, var(--fg, #f8fafc) 16%, transparent);
}
.mm-tile-line.short {
width: 58%;
}
.mm-foot {
display: flex;
gap: var(--space-2, 2cqmin);
}
.mm-chip {
height: 3.4cqmin;
border-radius: 1.7cqmin;
padding: 0 2.4cqmin;
display: grid;
align-items: center;
border: 0.16cqmin solid var(--border, #475569);
font-family: var(--font-mono, ui-monospace, "SF Mono", Menlo, monospace);
font-size: 1.5cqmin;
font-weight: 500;
letter-spacing: 0.08em;
color: var(--muted, #94a3b8);
}
.mm-chip.lead {
border-color: color-mix(in srgb, var(--mm-accent) 55%, transparent);
color: var(--mm-accent);
}
</style>
<div
id="modal-morph-clip"
class="mm-clip clip"
data-start="0"
data-duration="4"
data-track-index="0"
>
<div class="mm-stage">
<div class="mm-cardbox">
<div class="mm-card">
<div class="mm-slot-host">
<div class="mm-dot" data-morph-key="dot"></div>
<div class="mm-title" data-morph-key="title"></div>
<div class="mm-meta" data-morph-key="meta"></div>
</div>
</div>
</div>
<div class="mm-panel">
<div class="mm-panel-head mm-slot-host">
<div class="mm-dot" data-morph-key="dot"></div>
<div class="mm-title" data-morph-key="title"></div>
<div class="mm-meta" data-morph-key="meta"></div>
</div>
<div class="mm-body">
<div class="mm-tile">
<div class="mm-tile-line"></div>
<div class="mm-tile-line short"></div>
</div>
<div class="mm-tile">
<div class="mm-tile-line"></div>
<div class="mm-tile-line short"></div>
</div>
<div class="mm-tile">
<div class="mm-tile-line"></div>
<div class="mm-tile-line short"></div>
</div>
</div>
<div class="mm-foot">
<div class="mm-chip lead">OPEN</div>
<div class="mm-chip">DETAILS</div>
</div>
</div>
</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(".mm-stage");
var card = root.querySelector(".mm-card");
var panel = root.querySelector(".mm-panel");
var vars =
window.__hyperframes && window.__hyperframes.getVariables
? window.__hyperframes.getVariables()
: {};
var fromScaleRaw = parseFloat(vars.from_scale);
var fromScale = isFinite(fromScaleRaw) ? Math.min(1.5, Math.max(0.5, fromScaleRaw)) : 1;
var expandRaw = parseFloat(vars.expand_at);
var expandVar = isFinite(expandRaw) ? Math.max(0.2, expandRaw) : 1.2;
var register = vars.register === "snappy" ? "snappy" : "calm";
var accentColors = {
green: "var(--brand, #52525b)",
blue: "var(--accent, #52525b)",
violet: "var(--accent-2, #52525b)",
};
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("--mm-accent", accentColors[accent]);
root.style.setProperty("--mm-from-scale", String(fromScale));
// SLOT: same content cloned into BOTH layouts so measured
// pairs exist for every key. Keyless slot content is wrapped
// as one keyed block.
var hostDoc = root.ownerDocument;
var slotTemplate = null;
try {
slotTemplate = hostDoc.querySelector('template[data-slot="modal-morph-card"]');
} catch (error) {
slotTemplate = null;
}
if (slotTemplate) {
var hosts = root.querySelectorAll(".mm-slot-host");
for (var h = 0; h < hosts.length; h += 1) {
var content = hostDoc.importNode(slotTemplate.content, true);
var probe = hostDoc.createElement("div");
probe.appendChild(content);
if (!probe.querySelector("[data-morph-key]")) {
probe.setAttribute("data-morph-key", "slot");
}
hosts[h].textContent = "";
hosts[h].appendChild(probe);
}
}
// ONE-TIME measurement of both real layouts (the FLIP "first"
// and "last"). Everything after this line is pure f(t).
var stageRect = stage.getBoundingClientRect();
function measure(el) {
var r = el.getBoundingClientRect();
return {
x: r.left - stageRect.left,
y: r.top - stageRect.top,
w: Math.max(1, r.width),
h: Math.max(1, r.height),
};
}
var cardRect = measure(card);
var panelRect = measure(panel);
function collectKids(container) {
var map = {};
var nodes = container.querySelectorAll("[data-morph-key]");
for (var i = 0; i < nodes.length; i += 1) {
map[nodes[i].getAttribute("data-morph-key")] = {
el: nodes[i],
rect: measure(nodes[i]),
};
}
return map;
}
var cardKids = collectKids(card);
var panelKids = collectKids(panel);
// Matched pairs: for each layer we keep, per child, its OWN
// layout rect (home) plus the counterpart rect (away).
function pairs(ownKids, otherKids) {
var list = [];
for (var key in ownKids) {
if (Object.prototype.hasOwnProperty.call(otherKids, key)) {
list.push({
el: ownKids[key].el,
home: ownKids[key].rect,
away: otherKids[key].rect,
});
}
}
return list;
}
var panelPairs = pairs(panelKids, cardKids);
var cardPairs = pairs(cardKids, panelKids);
var fades = panel.querySelectorAll(".mm-body, .mm-foot");
// Fixed origins so the rect math is exact.
gsap.set([card, panel], { transformOrigin: "0 0" });
for (var pp = 0; pp < panelPairs.length; pp += 1) {
gsap.set(panelPairs[pp].el, { transformOrigin: "0 0" });
}
for (var cp = 0; cp < cardPairs.length; cp += 1) {
gsap.set(cardPairs[cp].el, { transformOrigin: "0 0" });
}
// Envelope: fixed IN/OUT, elastic HOLD, never time-scaled.
var MORPH_BASE = register === "snappy" ? 0.6 : 0.95;
var duration = Math.max(0.001, parseFloat(root.dataset.duration || "4"));
var EXPAND_BASE = Math.min(expandVar, Math.max(0.2, duration - 0.6));
var IN_BASE = EXPAND_BASE + MORPH_BASE + 0.15;
var OUT_BASE = exit === "none" ? 0 : 0.45;
var totalBase = Math.max(0.001, IN_BASE + OUT_BASE);
var scale = duration < totalBase ? duration / totalBase : 1;
var EXPAND = EXPAND_BASE * scale;
var MORPH = MORPH_BASE * scale;
var IN = IN_BASE * scale;
var OUT = OUT_BASE * scale;
var HOLD = Math.max(0, duration - (IN + OUT));
var OUT_START = IN + HOLD;
var ENTER = 0.3 * scale;
function clamp01(v) {
return v < 0 ? 0 : v > 1 ? 1 : v;
}
// calm: cubic inOut, no overshoot.
function calmEase(u) {
return u < 0.5 ? 4 * u * u * u : 1 - 4 * (1 - u) * (1 - u) * (1 - u);
}
// snappy: back.out with c1 = 0.7; analytic max 1.0176, under
// the 1.02 cap (and interpolating the rect keeps the scale
// overshoot strictly below 2% of target).
function snappyEase(u) {
var c1 = 0.7;
var c3 = c1 + 1;
var v = u - 1;
return 1 + c3 * v * v * v + c1 * v * v;
}
var ease = register === "snappy" ? snappyEase : calmEase;
function lerp(a, b, p) {
return a + (b - a) * p;
}
function lerpRect(a, b, p) {
return {
x: lerp(a.x, b.x, p),
y: lerp(a.y, b.y, p),
w: lerp(a.w, b.w, p),
h: lerp(a.h, b.h, p),
};
}
// Apply one layer: container transformed onto rect R; each
// matched child counter-scaled and translated onto the lerp of
// its own two measured rects. Child x/y live in the scaled
// container space, hence the divisions.
function applyLayer(container, homeRect, kidPairs, R, p) {
var sx = R.w / homeRect.w;
var sy = R.h / homeRect.h;
gsap.set(container, {
x: R.x - homeRect.x,
y: R.y - homeRect.y,
scaleX: sx,
scaleY: sy,
});
for (var i = 0; i < kidPairs.length; i += 1) {
var pair = kidPairs[i];
var relHome = {
x: pair.home.x - homeRect.x,
y: pair.home.y - homeRect.y,
};
var want = lerpRect(pair.away, pair.home, container === panel ? p : 1 - p);
var baseX = R.x + relHome.x * sx;
var baseY = R.y + relHome.y * sy;
gsap.set(pair.el, {
x: (want.x - baseX) / sx,
y: (want.y - baseY) / sy,
scaleX: want.w / (pair.home.w * sx),
scaleY: want.h / (pair.home.h * sy),
});
}
}
// Pure per-update apply: every transform and opacity is a
// function of tl.time() alone. Writes are idempotent.
function applyTime(timeSeconds) {
var enter = clamp01(ENTER > 0 ? timeSeconds / ENTER : 1);
var u = clamp01(MORPH > 0 ? (timeSeconds - EXPAND) / MORPH : 1);
var p = ease(u);
var R = lerpRect(cardRect, panelRect, p);
applyLayer(panel, panelRect, panelPairs, R, p);
applyLayer(card, cardRect, cardPairs, R, p);
// Crossfade: card owns the pre-phase, hands off in the
// first 30% of the morph.
var hand = clamp01(u / 0.3);
gsap.set(card, { opacity: enter * (1 - hand) });
gsap.set(panel, { opacity: u <= 0 ? 0 : Math.max(0.001, hand) });
// Panel-only furniture: fades up over the back half.
var q = clamp01((u - 0.55) / 0.45);
var qe = 1 - (1 - q) * (1 - q);
for (var f = 0; f < fades.length; f += 1) {
gsap.set(fades[f], { opacity: qe, y: (1 - qe) * 12 });
}
}
gsap.set(stage, { opacity: 1, y: "0cqh" });
var tl = gsap.timeline({
paused: true,
onUpdate: function () {
applyTime(tl.time());
},
});
// Anchor tween: inert, spans [0, D] so onUpdate fires for
// every eventful seek and holds never clamp short.
tl.to({ p: 0 }, { p: 1, duration: duration, ease: "none" }, 0);
// OUT: optional departure; exit none holds until the cut.
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);
applyTime(0);
window.__timelines = window.__timelines || {};
window.__timelines["modal-morph"] = tl;
})();
</script>
</div>
</template>
</body>
</html>
```
</Accordion>
{/* hf:generated-footer */}
Tagged `motion-primitive` `structure` `flip` `shared-element` `modal` `deterministic` `experiment`.
## 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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