974e26f592
Chat → Claude writes a JSCAD script → sandboxed Web Worker executes it → live three.js preview + STL export. Parametric // @param comments become live sliders. Server-side repair loop fixes geometry errors before the user sees them. - src/worker: Hono API, Claude orchestration (prompt-cached system prompt), /api/generate + /api/repair - src/client: React + react-three-fiber viewport, JSCAD engine Web Worker - Radical-branded (red #FF2D55 on #0B0B09, Syne + IBM Plex Mono) Engine validated end-to-end: mug model → 3256-triangle valid binary STL. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
68 lines
2.2 KiB
Markdown
68 lines
2.2 KiB
Markdown
# ◢ Chisel — AI CAD
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**Say it. Shape it.** Message what you want built; Claude writes a parametric CAD
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script, it runs in a sandbox, and it appears in a live 3D viewport — exportable
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to real CAD.
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The core idea: **the design *is* a parametric script.** Chat edits patch the
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script; sliders tune its parameters; export emits the geometry. Everything —
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editing, versioning, parametrics — falls out of that one choice.
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## Architecture (v0 — MVP)
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```
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React + react-three-fiber (chat + 3D viewport)
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│ POST /api/generate | /api/repair
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▼
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Hono Worker ── Claude (claude-sonnet-4-6, prompt-cached system prompt)
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│
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▼ returns a JSCAD script
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Sandboxed Web Worker (src/client/engine) ── runs script → binary STL
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▼
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three.js viewport + Download STL
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```
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- **Kernel:** JSCAD (`@jscad/modeling`), pure JS — runs client-side in a Web
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Worker isolated from the DOM. Exports STL now.
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- **Agent loop:** generate → execute → on error, `/api/repair` (up to 3×) before
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the user sees anything.
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- **Parameters:** `// @param name default // label` comments in the script become
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live sliders that re-run locally with no API call.
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## Develop
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```bash
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npm install
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wrangler secret put ANTHROPIC_API_KEY # or add to .dev.vars for local dev
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# terminal 1 — Worker API on :8787
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npm run dev
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# terminal 2 — Vite client on :5173 (proxies /api → :8787)
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npm run dev:client
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```
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Open http://localhost:5173.
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## Deploy
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```bash
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npm run deploy # builds client → ./public, then wrangler deploy
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```
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Serves at `chisel.theradicalparty.com`.
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## Roadmap
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- **v1** — conversational edits as source-of-truth, vision verification (render →
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"does this match?"), auth + saved projects (D1/R2), 3MF/OBJ export.
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- **v2** — **STEP B-rep engine** via build123d/OpenCascade in a Cloudflare
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Container/Sandbox, so exports reopen cleanly in Fusion/SolidWorks/FreeCAD.
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Version history & branching.
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- **v3** — assemblies & mates, dimension queries ("how tall is it?"),
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manufacturing hints (3D print / CNC).
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## Layout
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```
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src/worker/ Hono API — Claude orchestration, prompts, repair
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src/client/ React app, 3D viewer, JSCAD Web Worker engine
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```
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