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Miguel Angel Simon Sierra
f07d8ff79d
The box around a text layer inside the playground card stopped mid-word. The layer is 260px wide and paints 313, because its parent carries `scale(1.2)`, and the chrome read only the element's OWN transform. The top-left looked right, since the corners are anchored to the real bounding rect, so only the right and bottom edges fell short, by exactly 1/1.2. The same read decides whether to draw the box rotated at all, so an element whose parent is rotated got an upright box over a rotated one. The transform is now accumulated from the element up to the composition root. Only the linear part matters: each transform's origin contributes translation, and translation is already discarded by matching the corners to the element's bounding rect, so composing the matrices is enough and no per-ancestor origin has to be unpicked. The walk stops inside the composition document, because the canvas zoom lives on the iframe in Studio's own document and is applied separately. The fake DOMMatrix the geometry tests use gained the `multiply` it now needs.
@hyperframes/studio
Browser-based composition editor UI for Hyperframes. Provides a visual timeline, code editor, and live preview for building video compositions.
Install
npm install @hyperframes/studio
What it does
The studio is a React application with:
- Visual timeline — drag, resize, and arrange elements on tracks
- Code editor — edit HTML and GSAP scripts with CodeMirror (syntax highlighting, autocomplete)
- Live preview — see changes in real time as you edit
- Composition inspector — view and modify element properties
Development
The studio is embedded in the hyperframes preview command. To develop the studio UI itself:
cd packages/studio
bun run dev # Start Vite dev server
bun run build # Build for production
bun run typecheck # Type-check
Tech stack
- React 18/19, Zustand (state management)
- CodeMirror 6 (editor)
- Tailwind CSS (styling)
- Vite (bundler)
- Phosphor Icons
Documentation
Full documentation: hyperframes.heygen.com/packages/studio
Related packages
@hyperframes/core— types and parsers used by the editorhyperframes— CLI that serves the studio viahyperframes preview