Files
hyperframes/docs/catalog/blocks/loop-scale-2.mdx
Miao YangandClaude Fable 5.1 44c43fd99f feat(registry): add 249 seamless image-loop blocks (95 motion families, 1:1)
One block per loop variant (loop-<family>[-<n>], 1080x1080), one hand-written engine per family,
driven by a single paused GSAP timeline that recomputes every card transform from t. Every engine
parameter is exposed through data-composition-variables, grouped like a template editor's panel
(Media / Background / Appearance / Animation / Template options), plus image1..N content slots
that default to monochrome SVG placeholders. No third-party media ships.

Validation: scripts/lint-registry-items.mjs 249/249, oxfmt clean, hyperframes check on one variant
per family (95/95), registry.json + docs/catalog pages regenerated by the repo scripts. Previews are
rendered locally (720^2) and need the docs-images upload.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
2026-09-09 18:40:32 +08:00

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---
title: "Loop Scale 2"
description: "A new image swells up out of nothing at the centre each beat, over the previous ones. 8 image slots, 4s seamless loop, 1:1."
---
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/loop-scale-2.mp4" poster="https://static.heygen.ai/hyperframes-oss/docs/images/catalog/blocks/loop-scale-2.png" autoPlay muted loop playsInline />
## Install
<InstallCommand command="npx hyperframes add loop-scale-2" item="loop-scale-2" />
That writes one file: `compositions/loop-scale-2.html`.
## Add it to your video
It runs for 4 seconds at 1080×1080. Paste this into your composition:
```html index.html
<div
data-composition-id="loop-scale-2"
data-composition-src="compositions/loop-scale-2.html"
data-start="0"
data-duration="4"
data-track-index="1"
data-width="1080"
data-height="1080"
></div>
```
Move it in time with `data-start`. Put it on a different timeline row with
`data-track-index`. See [data attributes](/concepts/data-attributes) for the rest.
## 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 |
| --- | --- | --- | --- |
| `mediaFit` | `natural` | `natural`, `crop` | Natural keeps each image's own ratio; Crop fills the card box at the media aspect below. |
| `cropAspectRatio` | `1:1` | `16:9`, `9:16`, `1:1`, `4:5`, `3:2`, `3:4`, `2:3` | Card aspect used when Fit is Crop. |
| `backgroundType` | `gradient` | `gradient`, `color`, `image` | Gradient (start → end colours), flat Colour, or your own Image. |
| `backgroundGradientStart` | `#111111` | color | Top colour of the gradient. |
| `backgroundGradientEnd` | `#444444` | color | Bottom colour of the gradient. |
| `backgroundColor` | `#0b0b0f` | color | Flat colour when Type is Color; also the ground under an Image. |
| `backgroundImage` | `` | image | Cover-fitted background when Type is Image. |
| `blurAmount` | `0` | 0px to 60px, step 1px | Blur on the background image, px. |
| `backgroundGradientNoise` | `0` | 0% to 100%, step 1% | Film-grain overlay strength. |
| `backgroundOpacity` | `1` | 0 to 1, step 0.05 | Opacity of the whole background layer (0 = transparent ground). |
| `borderRadius` | `0` | 0px to 200px, step 1px | Card corner radius in px at 1080. |
| `stagger` | `0.4` | 0 to 2, step 0.01 | Stagger (engine parameter; see the block header comment). |
| `spin` | `0` | -90 to 90, step 1 | Spin (engine parameter; see the block header comment). |
| `imageFit` | `fit` | `fit`, `fill` | Image Fit (engine parameter; see the block header comment). |
| `planeSize` | `100` | 0 to 200, step 1 | Card size in scene units. |
| `scaleStyle` | `recede` | `bloom`, `recede` | Scale Style (engine parameter; see the block header comment). |
| `growFrom` | `center` | `center`, `top`, `bottom`, `left`, `right` | Grow From (engine parameter; see the block header comment). |
| `image1` | `data:image/svg+xml,%3Csvg xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg' width%3D'1400' height%3D'1050' viewBox%3D'0 0 1400 1050'%3E%3Crect width%3D'1400' height%3D'1050' fill%3D'%230b0b0f'%2F%3E%3Crect width%3D'1400' height%3D'1050' fill%3D'rgba(255%2C255%2C255%2C0.18)'%2F%3E%3Crect x%3D'2' y%3D'2' width%3D'1396' height%3D'1046' fill%3D'none' stroke%3D'rgba(255%2C255%2C255%2C0.14)' stroke-width%3D'4'%2F%3E%3Cpath d%3D'M252 778.05H621.6' stroke%3D'rgba(255%2C255%2C255%2C0.45)' stroke-width%3D'16.5' stroke-linecap%3D'round'%2F%3E%3Cpath d%3D'M286.65 778.05L379.05 662.55L471.45 778.05Z' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3Ccircle cx%3D'552.3' cy%3D'674.1' r%3D'34.65' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3C%2Fsvg%3E` | image | Image on card 1 of 8. Any aspect; fitted per mediaFit. |
| `image2` | `data:image/svg+xml,%3Csvg xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg' width%3D'1400' height%3D'788' viewBox%3D'0 0 1400 788'%3E%3Crect width%3D'1400' height%3D'788' fill%3D'%230b0b0f'%2F%3E%3Crect width%3D'1400' height%3D'788' fill%3D'rgba(255%2C255%2C255%2C0.18)'%2F%3E%3Crect x%3D'2' y%3D'2' width%3D'1396' height%3D'784' fill%3D'none' stroke%3D'rgba(255%2C255%2C255%2C0.14)' stroke-width%3D'4'%2F%3E%3Cpath d%3D'M252 583.908H529.376' stroke%3D'rgba(255%2C255%2C255%2C0.45)' stroke-width%3D'12.382857142857144' stroke-linecap%3D'round'%2F%3E%3Cpath d%3D'M278.004 583.908L347.348 497.228L416.692 583.908Z' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3Ccircle cx%3D'477.36800000000005' cy%3D'505.896' r%3D'26.004' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3C%2Fsvg%3E` | image | Image on card 2 of 8. Any aspect; fitted per mediaFit. |
| `image3` | `data:image/svg+xml,%3Csvg xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg' width%3D'1050' height%3D'1400' viewBox%3D'0 0 1050 1400'%3E%3Crect width%3D'1050' height%3D'1400' fill%3D'%230b0b0f'%2F%3E%3Crect width%3D'1050' height%3D'1400' fill%3D'rgba(255%2C255%2C255%2C0.18)'%2F%3E%3Crect x%3D'2' y%3D'2' width%3D'1046' height%3D'1396' fill%3D'none' stroke%3D'rgba(255%2C255%2C255%2C0.14)' stroke-width%3D'4'%2F%3E%3Cpath d%3D'M189 995.05H558.6' stroke%3D'rgba(255%2C255%2C255%2C0.45)' stroke-width%3D'16.5' stroke-linecap%3D'round'%2F%3E%3Cpath d%3D'M223.65 995.05L316.05 879.55L408.45 995.05Z' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3Ccircle cx%3D'489.3' cy%3D'891.1' r%3D'34.65' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3C%2Fsvg%3E` | image | Image on card 3 of 8. Any aspect; fitted per mediaFit. |
| `image4` | `data:image/svg+xml,%3Csvg xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg' width%3D'1400' height%3D'1400' viewBox%3D'0 0 1400 1400'%3E%3Crect width%3D'1400' height%3D'1400' fill%3D'%230b0b0f'%2F%3E%3Crect width%3D'1400' height%3D'1400' fill%3D'rgba(255%2C255%2C255%2C0.18)'%2F%3E%3Crect x%3D'2' y%3D'2' width%3D'1396' height%3D'1396' fill%3D'none' stroke%3D'rgba(255%2C255%2C255%2C0.14)' stroke-width%3D'4'%2F%3E%3Cpath d%3D'M252 1037.4H744.8' stroke%3D'rgba(255%2C255%2C255%2C0.45)' stroke-width%3D'22' stroke-linecap%3D'round'%2F%3E%3Cpath d%3D'M298.2 1037.4L421.4 883.4L544.5999999999999 1037.4Z' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3Ccircle cx%3D'652.4000000000001' cy%3D'898.8' r%3D'46.199999999999996' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3C%2Fsvg%3E` | image | Image on card 4 of 8. Any aspect; fitted per mediaFit. |
| `image5` | `data:image/svg+xml,%3Csvg xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg' width%3D'1400' height%3D'1050' viewBox%3D'0 0 1400 1050'%3E%3Crect width%3D'1400' height%3D'1050' fill%3D'%230b0b0f'%2F%3E%3Crect width%3D'1400' height%3D'1050' fill%3D'rgba(255%2C255%2C255%2C0.18)'%2F%3E%3Crect x%3D'2' y%3D'2' width%3D'1396' height%3D'1046' fill%3D'none' stroke%3D'rgba(255%2C255%2C255%2C0.14)' stroke-width%3D'4'%2F%3E%3Cpath d%3D'M252 778.05H621.6' stroke%3D'rgba(255%2C255%2C255%2C0.45)' stroke-width%3D'16.5' stroke-linecap%3D'round'%2F%3E%3Cpath d%3D'M286.65 778.05L379.05 662.55L471.45 778.05Z' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3Ccircle cx%3D'552.3' cy%3D'674.1' r%3D'34.65' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3C%2Fsvg%3E` | image | Image on card 5 of 8. Any aspect; fitted per mediaFit. |
| `image6` | `data:image/svg+xml,%3Csvg xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg' width%3D'1400' height%3D'788' viewBox%3D'0 0 1400 788'%3E%3Crect width%3D'1400' height%3D'788' fill%3D'%230b0b0f'%2F%3E%3Crect width%3D'1400' height%3D'788' fill%3D'rgba(255%2C255%2C255%2C0.18)'%2F%3E%3Crect x%3D'2' y%3D'2' width%3D'1396' height%3D'784' fill%3D'none' stroke%3D'rgba(255%2C255%2C255%2C0.14)' stroke-width%3D'4'%2F%3E%3Cpath d%3D'M252 583.908H529.376' stroke%3D'rgba(255%2C255%2C255%2C0.45)' stroke-width%3D'12.382857142857144' stroke-linecap%3D'round'%2F%3E%3Cpath d%3D'M278.004 583.908L347.348 497.228L416.692 583.908Z' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3Ccircle cx%3D'477.36800000000005' cy%3D'505.896' r%3D'26.004' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3C%2Fsvg%3E` | image | Image on card 6 of 8. Any aspect; fitted per mediaFit. |
| `image7` | `data:image/svg+xml,%3Csvg xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg' width%3D'1050' height%3D'1400' viewBox%3D'0 0 1050 1400'%3E%3Crect width%3D'1050' height%3D'1400' fill%3D'%230b0b0f'%2F%3E%3Crect width%3D'1050' height%3D'1400' fill%3D'rgba(255%2C255%2C255%2C0.18)'%2F%3E%3Crect x%3D'2' y%3D'2' width%3D'1046' height%3D'1396' fill%3D'none' stroke%3D'rgba(255%2C255%2C255%2C0.14)' stroke-width%3D'4'%2F%3E%3Cpath d%3D'M189 995.05H558.6' stroke%3D'rgba(255%2C255%2C255%2C0.45)' stroke-width%3D'16.5' stroke-linecap%3D'round'%2F%3E%3Cpath d%3D'M223.65 995.05L316.05 879.55L408.45 995.05Z' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3Ccircle cx%3D'489.3' cy%3D'891.1' r%3D'34.65' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3C%2Fsvg%3E` | image | Image on card 7 of 8. Any aspect; fitted per mediaFit. |
| `image8` | `data:image/svg+xml,%3Csvg xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg' width%3D'1400' height%3D'1400' viewBox%3D'0 0 1400 1400'%3E%3Crect width%3D'1400' height%3D'1400' fill%3D'%230b0b0f'%2F%3E%3Crect width%3D'1400' height%3D'1400' fill%3D'rgba(255%2C255%2C255%2C0.18)'%2F%3E%3Crect x%3D'2' y%3D'2' width%3D'1396' height%3D'1396' fill%3D'none' stroke%3D'rgba(255%2C255%2C255%2C0.14)' stroke-width%3D'4'%2F%3E%3Cpath d%3D'M252 1037.4H744.8' stroke%3D'rgba(255%2C255%2C255%2C0.45)' stroke-width%3D'22' stroke-linecap%3D'round'%2F%3E%3Cpath d%3D'M298.2 1037.4L421.4 883.4L544.5999999999999 1037.4Z' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3Ccircle cx%3D'652.4000000000001' cy%3D'898.8' r%3D'46.199999999999996' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3C%2Fsvg%3E` | image | Image on card 8 of 8. Any aspect; fitted per mediaFit. |
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="loop-scale-2"
data-composition-src="compositions/loop-scale-2.html"
data-variable-values='{"mediaFit":"natural","cropAspectRatio":"1:1","backgroundType":"gradient","backgroundGradientStart":"#111111","backgroundGradientEnd":"#444444","backgroundColor":"#0b0b0f","backgroundImage":"","blurAmount":0,"backgroundGradientNoise":0,"backgroundOpacity":1,"borderRadius":0,"stagger":0.4,"spin":0,"imageFit":"fit","planeSize":100,"scaleStyle":"recede","growFrom":"center","image1":"data:image/svg+xml,%3Csvg xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg' width%3D'1400' height%3D'1050' viewBox%3D'0 0 1400 1050'%3E%3Crect width%3D'1400' height%3D'1050' fill%3D'%230b0b0f'%2F%3E%3Crect width%3D'1400' height%3D'1050' fill%3D'rgba(255%2C255%2C255%2C0.18)'%2F%3E%3Crect x%3D'2' y%3D'2' width%3D'1396' height%3D'1046' fill%3D'none' stroke%3D'rgba(255%2C255%2C255%2C0.14)' stroke-width%3D'4'%2F%3E%3Cpath d%3D'M252 778.05H621.6' stroke%3D'rgba(255%2C255%2C255%2C0.45)' stroke-width%3D'16.5' stroke-linecap%3D'round'%2F%3E%3Cpath d%3D'M286.65 778.05L379.05 662.55L471.45 778.05Z' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3Ccircle cx%3D'552.3' cy%3D'674.1' r%3D'34.65' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3C%2Fsvg%3E","image2":"data:image/svg+xml,%3Csvg xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg' width%3D'1400' height%3D'788' viewBox%3D'0 0 1400 788'%3E%3Crect width%3D'1400' height%3D'788' fill%3D'%230b0b0f'%2F%3E%3Crect width%3D'1400' height%3D'788' fill%3D'rgba(255%2C255%2C255%2C0.18)'%2F%3E%3Crect x%3D'2' y%3D'2' width%3D'1396' height%3D'784' fill%3D'none' stroke%3D'rgba(255%2C255%2C255%2C0.14)' stroke-width%3D'4'%2F%3E%3Cpath d%3D'M252 583.908H529.376' stroke%3D'rgba(255%2C255%2C255%2C0.45)' stroke-width%3D'12.382857142857144' stroke-linecap%3D'round'%2F%3E%3Cpath d%3D'M278.004 583.908L347.348 497.228L416.692 583.908Z' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3Ccircle cx%3D'477.36800000000005' cy%3D'505.896' r%3D'26.004' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3C%2Fsvg%3E","image3":"data:image/svg+xml,%3Csvg 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fill%3D'rgba(255%2C255%2C255%2C0.18)'%2F%3E%3Crect x%3D'2' y%3D'2' width%3D'1396' height%3D'1396' fill%3D'none' stroke%3D'rgba(255%2C255%2C255%2C0.14)' stroke-width%3D'4'%2F%3E%3Cpath d%3D'M252 1037.4H744.8' stroke%3D'rgba(255%2C255%2C255%2C0.45)' stroke-width%3D'22' stroke-linecap%3D'round'%2F%3E%3Cpath d%3D'M298.2 1037.4L421.4 883.4L544.5999999999999 1037.4Z' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3Ccircle cx%3D'652.4000000000001' cy%3D'898.8' r%3D'46.199999999999996' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3C%2Fsvg%3E","image5":"data:image/svg+xml,%3Csvg xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg' width%3D'1400' height%3D'1050' viewBox%3D'0 0 1400 1050'%3E%3Crect width%3D'1400' height%3D'1050' fill%3D'%230b0b0f'%2F%3E%3Crect width%3D'1400' height%3D'1050' fill%3D'rgba(255%2C255%2C255%2C0.18)'%2F%3E%3Crect x%3D'2' y%3D'2' width%3D'1396' height%3D'1046' fill%3D'none' stroke%3D'rgba(255%2C255%2C255%2C0.14)' stroke-width%3D'4'%2F%3E%3Cpath d%3D'M252 778.05H621.6' 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></div>
```
## Source
<Accordion title={`loop-scale-2.html`}>
```html
<!doctype html>
<html
lang="en"
data-composition-variables='[{"id":"mediaFit","type":"enum","role":"style","label":"Media · Fit","description":"Natural keeps each image&#39;s own ratio; Crop fills the card box at the media aspect below.","default":"natural","options":[{"value":"natural","label":"Natural (original ratio)"},{"value":"crop","label":"Crop"}]},{"id":"cropAspectRatio","type":"enum","role":"style","label":"Media · Aspect","description":"Card aspect used when Fit is Crop.","default":"1:1","options":[{"value":"16:9","label":"16:9"},{"value":"9:16","label":"9:16"},{"value":"1:1","label":"1:1"},{"value":"4:5","label":"4:5"},{"value":"3:2","label":"3:2"},{"value":"3:4","label":"3:4"},{"value":"2:3","label":"2:3"}]},{"id":"backgroundType","type":"enum","role":"style","label":"Background · Type","description":"Gradient (start → end colours), flat Colour, or your own Image.","default":"gradient","options":[{"value":"gradient","label":"Gradient"},{"value":"color","label":"Color"},{"value":"image","label":"Image"}]},{"id":"backgroundGradientStart","type":"color","role":"style","label":"Background · Gradient start","description":"Top colour of the gradient.","default":"#111111"},{"id":"backgroundGradientEnd","type":"color","role":"style","label":"Background · Gradient end","description":"Bottom colour of the gradient.","default":"#444444"},{"id":"backgroundColor","type":"color","role":"style","label":"Background · Color","description":"Flat colour when Type is Color; also the ground under an Image.","default":"#0b0b0f"},{"id":"backgroundImage","type":"image","role":"style","label":"Background · Image","description":"Cover-fitted background when Type is Image.","portrays":["background_image"],"default":""},{"id":"blurAmount","type":"number","role":"style","label":"Background · Blur","description":"Blur on the background image, px.","default":0,"min":0,"max":60,"step":1,"unit":"px"},{"id":"backgroundGradientNoise","type":"number","role":"style","label":"Background · Grain","description":"Film-grain overlay strength.","default":0,"min":0,"max":100,"step":1,"unit":"%"},{"id":"backgroundOpacity","type":"number","role":"style","label":"Background · Opacity","description":"Opacity of the whole background layer (0 = transparent ground).","default":1,"min":0,"max":1,"step":0.05},{"id":"borderRadius","type":"number","role":"style","label":"Appearance · Border radius","description":"Card corner radius in px at 1080.","default":0,"min":0,"max":200,"step":1,"unit":"px"},{"id":"stagger","type":"number","role":"style","label":"Animation · Stagger","description":"Stagger (engine parameter; see the block header comment).","default":0.4,"min":0,"max":2,"step":0.01},{"id":"spin","type":"number","role":"style","label":"Template options · Spin","description":"Spin (engine parameter; see the block header comment).","default":0,"min":-90,"max":90,"step":1},{"id":"imageFit","type":"enum","role":"style","label":"Template options · Image Fit","description":"Image Fit (engine parameter; see the block header comment).","default":"fit","options":[{"value":"fit","label":"Fit"},{"value":"fill","label":"Fill"}]},{"id":"planeSize","type":"number","role":"style","label":"Template options · Media size","description":"Card size in scene units.","default":100,"min":0,"max":200,"step":1},{"id":"scaleStyle","type":"enum","role":"style","label":"Template options · Scale Style","description":"Scale Style (engine parameter; see the block header comment).","default":"recede","options":[{"value":"bloom","label":"Bloom"},{"value":"recede","label":"Recede"}]},{"id":"growFrom","type":"enum","role":"style","label":"Template options · Grow From","description":"Grow From (engine parameter; see the block header comment).","default":"center","options":[{"value":"center","label":"Center"},{"value":"top","label":"Top"},{"value":"bottom","label":"Bottom"},{"value":"left","label":"Left"},{"value":"right","label":"Right"}]},{"id":"image1","type":"image","role":"content","label":"Media · Image 1","description":"Image on card 1 of 8. 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>
<head>
<title>loop-scale-2</title>
<meta charset="UTF-8" />
<meta name="viewport" content="width=1080, height=1080" />
<script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
html,
body {
width: 1080px;
height: 1080px;
overflow: hidden;
background: #0b0b0f;
}
#loop-scale-2-bg {
position: absolute;
inset: 0;
}
#loop-scale-2-stage {
position: absolute;
inset: 0;
}
.layer {
display: none;
}
.card img {
display: block;
}
</style>
</head>
<body>
<div
id="loop-scale-2-root"
data-composition-id="loop-scale-2"
data-start="0"
data-width="1080"
data-height="1080"
data-duration="4"
>
<div
id="loop-scale-2-loop"
class="clip"
data-start="0"
data-duration="4"
data-track-index="1"
data-layout-allow-overflow
>
<div id="loop-scale-2-bg"></div>
<div id="loop-scale-2-stage"></div>
</div>
</div>
<script>
// Shared runtime for the the reference tool loop ports. Loaded by every family engine.
// Everything here is a pure function of the HyperFrames variables + t.
//
// Reference constants (measured on the 512x512 preview library, 2026-09-08):
// Marquee planeSize -> 0.3% of frame height per unit (7 variants, all 1.54px/unit @512)
// Marquee gap -> 0.2% of frame height per unit
// 3D perspective -> CSS focal length f = 1000px * (100/perspective) at H=1080
// (3D01/02/08/11: card widths & far-card spacing match to <3%)
// Both are calibrated on a SQUARE canvas; for 16:9 we scale by H. ponytail: if the
// dashboard 16:9 reference shows width-relative scaling, flip REF below to W.
window.RF = (() => {
// Variables are injected by the inline script via RF.use(): HyperFrames wraps INLINE scripts in a
// per-composition scope where getVariables() resolves; this external file only sees the host window.
const V = {},
MEDIA = [];
const use = (vars, media) => {
Object.assign(V, vars || {});
MEDIA.splice(0, MEDIA.length, ...(media || []));
};
const root = document.querySelector("[data-composition-id]");
const W = +root.dataset.width,
H = +root.dataset.height;
const REF = H;
const num = (k, d) => (V[k] !== undefined && V[k] !== "" && !isNaN(+V[k]) ? +V[k] : d);
const str = (k, d) => (V[k] !== undefined && V[k] !== "" ? String(V[k]) : d);
const on = (k, d) => /^(true|on|1)$/i.test(str(k, d ? "on" : "off")); // spec booleans arrive as "true"/"false", enums as on/off
function pick(n) {
n = Math.max(1, Math.min(MEDIA.length, n | 0));
return MEDIA.slice(0, n);
}
// aspect (w/h) a card takes for a media item under mediaFit + cropAspectRatio
function aspect(m, fit, cropAR) {
if (fit === "natural") return m.w / m.h;
const [a, b] = String(cropAR || "1:1")
.split(":")
.map(Number);
return a && b ? a / b : 1;
}
function card(m, w, h, radius) {
const el = document.createElement("div");
el.className = "card";
el.style.cssText = `position:absolute;width:${w}px;height:${h}px;overflow:hidden;border-radius:${radius}px;`;
const img = document.createElement("img");
img.src = m.src;
img.width = Math.round(w);
img.height = Math.round(h);
img.style.cssText = `display:block;width:${w}px;height:${h}px;object-fit:cover;`;
el.appendChild(img);
return el;
}
function background(el) {
// the editor's Background panel: type gradient | color | image, gradient start/end, grain (noise %), opacity, image blur
const type = str("backgroundType", "gradient");
const c = str("backgroundColor", "#0b0b0f");
el.style.background = c;
if (type === "gradient") {
const g1 = str("backgroundGradientStart", "#111111"),
g2 = str("backgroundGradientEnd", "#444444");
el.style.background = `linear-gradient(180deg, ${g1}, ${g2})`;
} else if (type === "image") {
const im = V.backgroundImage,
src = im && typeof im === "object" ? im.url || im.src || "" : im || "";
if (src) {
el.style.background = `${c} url("${src}") center / cover no-repeat`;
const b = num("blurAmount", 0);
if (b > 0) el.style.filter = `blur(${b}px)`;
}
}
el.style.opacity = String(Math.max(0, Math.min(1, num("backgroundOpacity", 1))));
const noise = num("backgroundGradientNoise", 0);
if (noise > 0) {
const g = document.createElement("div");
g.style.cssText = `position:absolute;inset:0;pointer-events:none;mix-blend-mode:overlay;opacity:${((noise / 100) * 0.7).toFixed(3)};background:url("data:image/svg+xml,%3Csvg%20xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg'%20width%3D'256'%20height%3D'256'%3E%3Cfilter%20id%3D'n'%3E%3CfeTurbulence%20type%3D'fractalNoise'%20baseFrequency%3D'0.9'%20numOctaves%3D'3'%20stitchTiles%3D'stitch'%20seed%3D'7'%2F%3E%3CfeColorMatrix%20values%3D'0%200%200%200%200.5%200%200%200%200%200.5%200%200%200%200%200.5%200%200%200%201%200'%2F%3E%3C%2Ffilter%3E%3Crect%20width%3D'256'%20height%3D'256'%20filter%3D'url(%23n)'%2F%3E%3C%2Fsvg%3E") 0 0 / 256px 256px repeat`;
el.appendChild(g);
}
}
const expoInOut = (x) =>
x <= 0
? 0
: x >= 1
? 1
: x < 0.5
? Math.pow(2, 20 * x - 10) / 2
: (2 - Math.pow(2, -20 * x + 10)) / 2;
const frac = (x) => x - Math.floor(x);
return {
V,
use,
W,
H,
REF,
num,
str,
on,
MEDIA,
pick,
aspect,
card,
background,
expoInOut,
frac,
};
})();
</script>
<script>
(async () => {
// Scale loop family — "Images swell up out of nothing": a new image is
// born every DUR/N at scale 0 and grows to full plane size over a life T, newest on top, so the
// frame shows ~4-6 nested planes (a zoom tunnel). Measured on the 512 previews (2026-09-08):
// spawn period = DUR/N exactly (Scale01 15f, Scale04 18.75f); `stagger` is NOT the period.
// growth E(u) = 0.35*u + 0.65*expoInOut(k=10)(u), u = age/T (fit rms 0.55% of H on Scale04
// 117 edge samples, 3.2% on Scale01; ~1px/frame linear tails, ~15px/frame peak).
// T = 1.2 * stagger * DUR (Scale01: 58.5f = 0.4875 DUR @ stagger 0.4; Scale04: 106.5f = 0.71 DUR
// @ stagger 0.6). Only N=8 available, so an N-dependence (e.g. stagger*(N+1.5)*period) cannot be excluded.
// recede = bloom played backwards (Scale02 frame f == Scale01 frame 15-f, all edges).
// spin: rotation = spin * (1 - E(u)) deg (Scale03 outer plane -2.3/-1.7/-1.1/-0.7/-0.4 deg vs predicted
// 2.3/1.6/1.1/0.7/0.3; the alternative spin*(1-u) predicts 6.3/4.5/3.1/1.9/0.9).
// growFrom bottom: planes anchored at the frame's bottom edge, grow upward (Scale04 column profile).
// Guesses/knobs: planeSize = % of H for the plane box (100 = frame-high; previews square);
// imageFit fit = contain the image in the plane box keeping aspect, fill = cover it (uniform placeholders
// cannot show the difference); recede keeps the forward image order.
// media list [{src,w,h}] is inlined by build.mjs; HyperFrames scopes inline scripts, so hand both to the shared lib explicitly
const __V = Object.assign(
{},
(window.__hyperframes && window.__hyperframes.getVariables
? window.__hyperframes.getVariables()
: null) || {},
{ loopDuration: 4, loopRepeat: 2, imageCount: 8 },
);
const __PH = [
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"data:image/svg+xml,%3Csvg xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg' width%3D'1400' height%3D'788' viewBox%3D'0 0 1400 788'%3E%3Crect width%3D'1400' height%3D'788' fill%3D'%230b0b0f'%2F%3E%3Crect width%3D'1400' height%3D'788' fill%3D'rgba(255%2C255%2C255%2C0.18)'%2F%3E%3Crect x%3D'2' y%3D'2' width%3D'1396' height%3D'784' fill%3D'none' stroke%3D'rgba(255%2C255%2C255%2C0.14)' stroke-width%3D'4'%2F%3E%3Cpath d%3D'M252 583.908H529.376' stroke%3D'rgba(255%2C255%2C255%2C0.45)' stroke-width%3D'12.382857142857144' stroke-linecap%3D'round'%2F%3E%3Cpath d%3D'M278.004 583.908L347.348 497.228L416.692 583.908Z' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3Ccircle cx%3D'477.36800000000005' cy%3D'505.896' r%3D'26.004' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3C%2Fsvg%3E",
"data:image/svg+xml,%3Csvg xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg' width%3D'1050' height%3D'1400' viewBox%3D'0 0 1050 1400'%3E%3Crect width%3D'1050' height%3D'1400' fill%3D'%230b0b0f'%2F%3E%3Crect width%3D'1050' height%3D'1400' fill%3D'rgba(255%2C255%2C255%2C0.18)'%2F%3E%3Crect x%3D'2' y%3D'2' width%3D'1046' height%3D'1396' fill%3D'none' stroke%3D'rgba(255%2C255%2C255%2C0.14)' stroke-width%3D'4'%2F%3E%3Cpath d%3D'M189 995.05H558.6' stroke%3D'rgba(255%2C255%2C255%2C0.45)' stroke-width%3D'16.5' stroke-linecap%3D'round'%2F%3E%3Cpath d%3D'M223.65 995.05L316.05 879.55L408.45 995.05Z' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3Ccircle cx%3D'489.3' cy%3D'891.1' r%3D'34.65' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3C%2Fsvg%3E",
"data:image/svg+xml,%3Csvg xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg' width%3D'1400' height%3D'1400' viewBox%3D'0 0 1400 1400'%3E%3Crect width%3D'1400' height%3D'1400' fill%3D'%230b0b0f'%2F%3E%3Crect width%3D'1400' height%3D'1400' fill%3D'rgba(255%2C255%2C255%2C0.18)'%2F%3E%3Crect x%3D'2' y%3D'2' width%3D'1396' height%3D'1396' fill%3D'none' stroke%3D'rgba(255%2C255%2C255%2C0.14)' stroke-width%3D'4'%2F%3E%3Cpath d%3D'M252 1037.4H744.8' stroke%3D'rgba(255%2C255%2C255%2C0.45)' stroke-width%3D'22' stroke-linecap%3D'round'%2F%3E%3Cpath d%3D'M298.2 1037.4L421.4 883.4L544.5999999999999 1037.4Z' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3Ccircle cx%3D'652.4000000000001' cy%3D'898.8' r%3D'46.199999999999996' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3C%2Fsvg%3E",
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"data:image/svg+xml,%3Csvg xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg' width%3D'1400' height%3D'788' viewBox%3D'0 0 1400 788'%3E%3Crect width%3D'1400' height%3D'788' fill%3D'%230b0b0f'%2F%3E%3Crect width%3D'1400' height%3D'788' fill%3D'rgba(255%2C255%2C255%2C0.18)'%2F%3E%3Crect x%3D'2' y%3D'2' width%3D'1396' height%3D'784' fill%3D'none' stroke%3D'rgba(255%2C255%2C255%2C0.14)' stroke-width%3D'4'%2F%3E%3Cpath d%3D'M252 583.908H529.376' stroke%3D'rgba(255%2C255%2C255%2C0.45)' stroke-width%3D'12.382857142857144' stroke-linecap%3D'round'%2F%3E%3Cpath d%3D'M278.004 583.908L347.348 497.228L416.692 583.908Z' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3Ccircle cx%3D'477.36800000000005' cy%3D'505.896' r%3D'26.004' fill%3D'rgba(255%2C255%2C255%2C0.45)'%2F%3E%3C%2Fsvg%3E",
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];
const __MEDIA = await Promise.all(
["image1", "image2", "image3", "image4", "image5", "image6", "image7", "image8"].map(
async (id, i) => {
const v = __V[id];
const src = (v && typeof v === "object" ? v.url || v.src : v) || __PH[i];
const img = new Image();
img.src = src;
try {
await img.decode();
} catch (e) {}
return { src, w: img.naturalWidth || 1400, h: img.naturalHeight || 1050 };
},
),
);
RF.use(__V, __MEDIA);
const { W, H, REF, num, str, pick, aspect, card, background, frac } = RF;
const DUR = num("loopDuration", 4);
const FIT = str("mediaFit", "natural");
const CROP_AR = str("cropAspectRatio", "1:1");
const SPIN = num("spin", 0);
const IMGFIT = str("imageFit", "fit");
const PLANE = num("planeSize", 100) / 100;
const STAGGER = num("stagger", 0.4);
const RECEDE = str("scaleStyle", "bloom") === "recede";
const FROM = str("growFrom", "center");
const RADIUS = (num("borderRadius", 0) * REF) / 1080;
const IMAGES = pick(num("imageCount", 16));
const N = IMAGES.length;
const T = Math.min(0.999, 1.2 * STAGGER); // life as a fraction of the loop
document.getElementById("loop-scale-2-loop").dataset.duration = DUR;
background(document.getElementById("loop-scale-2-bg"));
const stage = document.getElementById("loop-scale-2-stage");
// plane box: frame-shaped, scaled by planeSize; image contained (fit) or covering (fill) it
const BW = W * PLANE,
BH = H * PLANE;
const ORIGIN =
{
center: "50% 50%",
top: "50% 0%",
bottom: "50% 100%",
left: "0% 50%",
right: "100% 50%",
}[FROM] || "50% 50%";
const layers = IMAGES.map((m) => {
const a = aspect(m, FIT, CROP_AR);
let w, h;
if (IMGFIT === "fill") {
if (BW / BH > a) {
w = BW;
h = BW / a;
} else {
h = BH;
w = BH * a;
}
} else {
if (BW / BH > a) {
h = BH;
w = BH * a;
} else {
w = BW;
h = BW / a;
}
}
// wrapper = plane box, anchored to the frame edge named by growFrom; the image sits centred in it
const box = document.createElement("div");
box.className = "layer";
const left = FROM === "left" ? 0 : FROM === "right" ? W - BW : (W - BW) / 2;
const top = FROM === "top" ? 0 : FROM === "bottom" ? H - BH : (H - BH) / 2;
box.style.cssText = `position:absolute;left:${left}px;top:${top}px;width:${BW}px;height:${BH}px;overflow:hidden;transform-origin:${ORIGIN};border-radius:${RADIUS}px;`;
const c = card(m, w, h, 0);
c.style.left = (BW - w) / 2 + "px";
c.style.top = (BH - h) / 2 + "px";
box.appendChild(c);
stage.appendChild(box);
return box;
});
const expoK = (x, k) =>
x <= 0
? 0
: x >= 1
? 1
: x < 0.5
? Math.pow(2, k * (2 * x - 1)) / 2
: 1 - Math.pow(2, -k * (2 * x - 1)) / 2;
const E = (u) => (u <= 0 ? 0 : u >= 1 ? 1 : 0.35 * u + 0.65 * expoK(u, 10));
function renderAt(t) {
const tau = RECEDE ? 1 - t : t; // recede = bloom in reverse
for (let i = 0; i < N; i++) {
const slot = RECEDE ? N - 1 - i : i; // keep the image order forward on screen
const age = frac(tau - (slot + 0.5) / N); // in loops; births sit half a period after the slot boundary (Scale01 phase 6.5f/15, Scale04 9.5f/18.75)
const el = layers[i];
if (age >= T) {
el.style.display = "none";
continue;
}
const s = E(age / T);
el.style.display = "block";
el.style.zIndex = String(1000 - Math.round(age * 999)); // younger on top
el.style.transform = `rotate(${SPIN * (1 - s)}deg) scale(${s})`;
}
}
// one paused linear tween drives t; every frame is recomputed from t alone (seek-safe)
const state = { t: 0 };
const tl = gsap.timeline({ paused: true });
tl.to(state, { t: 1, duration: DUR, ease: "none", onUpdate: () => renderAt(state.t) }, 0);
renderAt(0);
window.__timelines = window.__timelines || {};
window.__timelines["loop-scale-2"] = tl;
})();
</script>
</body>
</html>
```
</Accordion>
{/* hf:generated-footer */}
Tagged `loop` `images` `showcase` `gallery` `scale`.
Created by Miao Yang.
## Related topics
- [Browse the complete Catalog](/catalog)
- [Add assets and Catalog items in Studio](/studio/assets-and-blocks)
- [Build a richer composition](/go-further)