3dtours
6814b055cb
The live view is the one place where the look is chosen before the picture exists, so the columns that hold it have to stay in reach while the camera is open. The viewfinder was a fixed black sheet over the whole app: the rail and every slider were behind it, and the only way to change the look was to close the camera, grade the file, and open it again. It now covers the stage and nothing else — the stage and the view share a slot (`.stage-slot`, position relative) and the view is absolutely placed inside it, z-index 5, black in either theme. Measured at 1600px: the rail and the columns are on screen, the feed takes 1347px of the 1600 and the stage's own 253px rail the rest. A slider moved with the camera open reaches the very next frame (the render loop reads the recipe per frame, so nothing had to be wired), a monochrome sim takes the live feed from sat 42.1 to 0, and the shutter hands the studio that same frame with the sim already on it. The preview render is skipped while the viewfinder is up (`|| shooting` in the guard, and in the effect's deps): it would run the same recipe through the same renderer as the frames the user is actually watching, and the live one wins. Opening it is PRO, like the HSL chips and the geotag — the frames are the paid ones. The button stays on the page for everyone and carries the badge, and the click runs the app's own `promptPro`: the account dialog for a guest, the verification panel for a signed-in account, `/api/auth/me` being what says which. A verified account gets the camera; a guest gets `.modal-backdrop` and no `camera-view` at all. Probes: cam-pro-gate (guest sees the badge, the click opens the dialog, no viewfinder; verified opens it), cam-live-edit (rail and columns survive the live view, feed covers the stage, the recipe reaches the live frames and the shot), cam-smoke, cam-renegotiate, cam-close-flip.
RecipesCam web — self-contained stack
A Docker-hosted web build of RecipesCam. Everything it needs is in this folder: move it to another machine, run two commands, and the app is up. It does not need the React Native project around it.
cp .env.example .env
docker compose up -d --build
# → http://localhost:8090
What runs where
| Service | Image | Role |
|---|---|---|
frontend |
nginx:1.27-alpine (built by frontend/Dockerfile) |
Static SPA + /api/ reverse proxy |
api |
node:22-slim (built by backend/Dockerfile) |
Accounts + saved recipes, SQLite on ./data |
frontend resolves api through Docker's embedded DNS and proxies /api/* to
it — that is why the API container is named api and why it is not published on
the host. Only ${WEB_PORT:-8090} is exposed.
Photos never leave the browser. The CanvasKit render pipeline (grade, frame, watermarks, JPEG encode) runs in the visitor's tab; the API only stores recipes as JSON.
Layout
docker-compose.yml the stack
.env.example WEB_PORT
data/ SQLite (created on first run, gitignored)
backend/ Fastify + better-sqlite3 API, own Dockerfile
frontend/ Vite + React + CanvasKit SPA, own Dockerfile + nginx.conf
shared/ vendored copies of the app's types + utils (see below)
src/engine/ skiaShim.ts (CanvasKit) + exportEngine.ts (render pipeline)
+ session.ts (localStorage/IndexedDB studio persistence)
Vendored files
frontend/shared/{types/index.ts,utils/*.ts} are byte-identical copies of
src/types/index.ts and ten src/utils/*.ts files from the React Native
project (@shopify/react-native-skia is aliased to src/engine/skiaShim.ts in
vite.config.ts + tsconfig.json, so those files compile unchanged):
cinemaShader colorUtils defaultRecipes exifWrite frameUtils jpegDpi
paramDefs recipeShare skiaImage toneShader.
The landing page needs no CDN: frontend/public/assets/fonts/*.woff2 are the
seven self-hosted faces behind the three font groups the Themes menu offers
(Plus Jakarta Sans / Inter / JetBrains Mono, Fraunces / Be Vietnam Pro /
Courier Prime, Be Vietnam Pro / Space Mono — all SIL OFL, pulled from Google
Fonts, vietnamese + latin + latin-ext subsets), and
frontend/public/assets/samples/s*.jpg are the six placeholder negatives the
film strip, preset tester and QR card show (swap them for real graded stills
whenever we have them). Its one foreign request is the QR image from
api.qrserver.com, which degrades to an empty slot offline.
When the app changes one of them, copy it back in — the renderer is only "parity" for as long as these stay in sync:
cd <repo>/docker/frontend/shared/utils
cp <repo>/src/utils/<name>.ts .
Operations
docker compose logs -f api # API log
docker compose restart api # after backend/src changes (rebuild: --build)
docker compose down # stop; ./data survives
Backup is the ./data folder — that is the whole database.
Checks
curl -s http://localhost:8090/api/health # {"ok":true}
curl -sI http://localhost:8090/ # 200, index.html
Then open the UI, drop a photo in, and confirm the preview shows the picture and
EXPORT downloads a JPEG that opens. The preview going solid black while the
export still reports a plausible size is the one failure mode worth knowing: it
means the CanvasKit GPU surfaces lost their shared GrDirectContext (see
frontend/src/engine/skiaShim.ts), and with no GPU the raster fallback renders
the same pipeline correctly, just slower.