# MotionLab

A small native macOS app: camera in, a chain of Metal shader effects, out to a window, a recording or a virtual camera.

- **Adding or changing an effect:** read `EFFECTS.md` first. An effect is one file in `effects/`; the Swift code does not need to change.
- **Build:** `swift build -c release` (Command Line Tools are enough, no Xcode).
- **Check effects without a camera or window:** `.build/release/MotionLab --check`
- **Run:** `.build/release/MotionLab` (options are listed at the top of `Sources/MotionLab/main.swift`).

Layout:

- `Sources/MotionLab/` the app. `Shaders.swift` holds the wrapper every effect is compiled into; `Analysis.swift` computes the motion inputs; `Renderer.swift` runs the chain.
- `effects/` one `.metal` file per effect.
- `captures/` screenshots and recordings (not in git).