9b41d7321f
Refer to demo.pcbjam.com from the landing: an accent "Live demo" link in the header nav, an "Open the live editor" hero link, a note in the gerber section, and a "Try the live demo now" line in the final CTA. Rework the embedded gerber viewer (public/gerber-demo/boot.js) to source the WASM from the deploy pipeline's versioned CDN instead of the hand-synced assets.pcbjam.com bucket: resolve gerbview's content-addressed folder at runtime from the release manifest (manifest-latest -> tag -> manifest-<tag> -> gerbview), load all assets (glue + wasm + images.tar.gz) from cdn.pcbjam.com, and load the cross-origin pthread worker via a same-origin blob importScripts shim (mirrors web/standalone/src/wasm/boot.ts). Bump the config-seed KICAD_VERSION_DIR 9.99 -> 10.0 to match the deployed build. Drop the now-obsolete committed glue mirror and the old assets.pcbjam.com sync/r2-deploy scripts. Collapse the header nav to the hamburger below 1025px — the added demo link no longer fits the 1024px-capped bar on a single row. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
65 lines
3.3 KiB
Markdown
65 lines
3.3 KiB
Markdown
# Gerber viewer demo
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KiCad's `gerbview` compiled to WebAssembly, embedded (lazily) in the landing page
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and the blog post. Click → it streams the WASM and renders the bundled
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tiny_tapeout board in-browser.
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The WASM is **not** kept here — `boot.js` loads it from the versioned CDN
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(`cdn.pcbjam.com`), the same artifacts the demo/app deploy publishes. It resolves
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gerbview's immutable, content-addressed folder at runtime from the release
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manifest, so this page always shows the **latest deployed** gerbview with no
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manual sync:
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```
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manifest-latest.json -> { tag }
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manifest-<tag>.json -> tools.gerbview -> <ver>
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base = https://cdn.pcbjam.com/wasm/gerbview/<ver>
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```
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See `docs/features/demo-deploy/0001-wasm-cdn-versioning.md` (in `pcbjam-private`)
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for the CDN layout, manifest shapes, and header matrix.
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## Files here (`site/public/gerber-demo/`)
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| Path | What it does |
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|------|--------------|
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| `index.html` | The iframe/standalone target — minimal page with the `#main-window` / `#window-container` the WASM needs. |
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| `boot.js` | Boot harness: resolves gerbview's CDN folder from the manifest, configures Emscripten `Module`, seeds KiCad config, preloads the board into MEMFS, auto-opens it via `Module.arguments`, and injects `wx.js → wx-dom.js → gerbview.js` from the CDN. |
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| `board/` | The tiny_tapeout Gerber layers (committed) the demo opens. |
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| `poster.png` | Static fallback shown to browsers that can't run the live viewer. |
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The folder is cross-origin to this page (which is COEP `require-corp`); the CDN
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sends `Cross-Origin-Resource-Policy: cross-origin` + `Access-Control-Allow-Origin: *`,
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and the cross-origin pthread worker is loaded via a same-origin `blob:`
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`importScripts` shim (`new Worker(<cross-origin URL>)` is a SecurityError). This
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mirrors the standalone editor's `web/standalone/src/wasm/boot.ts`.
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## Related pieces (elsewhere in `site/`)
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| Path | What it does |
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|------|--------------|
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| `src/sections/GerberDemoSection.astro` | The landing-page showcase: a poster + launch button that opens `/gerber-demo/` in a new tab (the landing itself is not cross-origin isolated). |
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| `src/components/GerberDemo.astro` | The blog embed: lazy click-to-load iframe, cross-origin-isolation reload guard, feature-detect + poster fallback. |
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| `astro.config.mjs` + `src/middleware.ts` | Dev cross-origin-isolation headers (COOP/COEP `require-corp`). |
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| `vercel.json` | Prod COOP/COEP, scoped to the blog post + `/gerber-demo/` routes. |
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## Dev overrides
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`boot.js` reads query params so you can point it elsewhere without a rebuild:
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| Param | Effect |
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|-------|--------|
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| `?tag=<tag>` | Pin a specific release instead of following `manifest-latest.json`. |
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| `?cdn=<root>` | Swap the CDN root (e.g. a local mirror serving `manifest-*.json` + `gerbview/<ver>/`). |
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| `?base=<folder>` | Use a tool folder verbatim (e.g. a fresh local build) — skips manifest resolution. |
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The live viewer needs SharedArrayBuffer + WebGL2 (Chrome/Edge/Firefox, Safari 15.2+);
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other browsers get `poster.png`.
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## Updating `KICAD_VERSION_DIR`
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`boot.js` seeds KiCad config under a version dir (currently `"10.0"`) to suppress
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the first-run wizard. It **must** match the deployed build's
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`GetMajorMinorVersion()`. If a future deploy bumps KiCad's major.minor, update the
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`KICAD_VERSION_DIR` constant in `boot.js` (same coupling as
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`web/standalone/src/wasm/constants.ts`).
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