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@bitbybit-dev/occt

v1.0.2

Published

Bit By Bit Developers CAD algorithms using OpenCascade Technology kernel. Run in Node and in Browser.

Downloads

2,441

Vulnerabilities

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Links

Git

Maintainers

matas-umatas-u

Keywords

Bit By Bit Developersbitbybitbitbybit.devGeometryCAD3DOCCTOpenCascadeParametricModelingBrowserNode3D algorithmsSTEPSTP3D modeling3D printing3D printing algorithms3D softwareOpenCascade TechnologyAECAutomotiveEngineeringCAECAM

Readme

@bitbybit-dev/occt

OpenCascade Technology (OCCT) CAD kernel integration for Bitbybit - professional-grade 3D modeling with boolean operations, fillets, chamfers, lofts, sweeps, STEP/IGES import/export, and more.

Overview

This package wraps the OpenCascade Technology kernel with additional algorithms from Bitbybit. It is independent of rendering frameworks - use it with BabylonJS, Three.js, PlayCanvas, or build your own WebGL/WebGPU pipeline.

Works in both Node.js and browser environments. For browser apps, consider using @bitbybit-dev/occt-worker which wraps this library in a non-blocking WebWorker.

Quick Start

The fastest way to scaffold a project with OCCT pre-configured:

npx @bitbybit-dev/create-app my-project --engine threejs
cd my-project
npm install
npm run dev

This creates a complete Vite + TypeScript project with OCCT, JSCAD, and Manifold kernels ready to use. Learn more about the CLI.

Need Server-Side CAD?

The CLI first asks you to choose between a Frontend app or a CAD Cloud app. Select "cloud" to scaffold a full-stack project with a backend (Hono on Cloudflare Workers, Node.js Express, or ASP.NET Core) and a React + Three.js frontend. Your API key stays on the server and the frontend proxies requests through your backend:

npx @bitbybit-dev/create-app my-cloud-project --type cloud

Choose from 5 backend templates: Hono + SDK, Hono + REST, Node.js + SDK, Node.js + REST, or .NET + REST. Each includes ready-to-run examples with model generation, batch operations, and CAD pipelines. Learn more.

Links

| Resource | URL | |----------|-----| | GitHub | https://github.com/bitbybit-dev/bitbybit/tree/master/packages/dev/occt | | Monorepo | https://github.com/bitbybit-dev/bitbybit | | NPM | https://www.npmjs.com/package/@bitbybit-dev/occt | | Documentation | https://learn.bitbybit.dev/learn/code/common/occt/what-is-occt | | Unit Test Coverage | https://tests.bitbybit.dev/occt |

Example Applications

| App | Source Code | |-----|-------------| | Hex Shell | GitHub | | Cup Configurator | GitHub | | Hex House Concept | GitHub | | Terrace Furniture (BabylonJS) | Closed source |

Development

# Build package
npm run build-p

# Run unit tests with coverage
npm run test-c

# Run live unit tests with coverage on save
npm run test-c-l

Bitbybit Platform

Beyond NPM packages, Bitbybit offers:

  • Visual Programming Editors - Rete & Blockly drag-and-drop 3D modeling, plus a Monaco TypeScript editor
  • CAD Cloud API - Build full pipelines that compose all Bitbybit algorithms, where each step can reference outputs of previous steps. Supports parametric model generation, STEP-to-glTF conversion, and complex CAD workflows via HTTP
  • Bitbybit Studio - A growing visual dashboard where API Key users can generate models, convert files, build pipelines with a GUI, inspect tasks, and preview 3D results
  • 3D Bits for Shopify - Interactive 3D product configurators for e-commerce
  • Script Runners - Execute visual scripts directly on your website
  • AI-Assisted Development - Context files for GitHub Copilot, Claude, and ChatGPT
  • Business & Enterprise - We help businesses and enterprises develop custom applications and spin up optimized CAD tenant workflows on our managed servers

Support the Project

This package is part of the open-source Bitbybit ecosystem. Your subscription helps fund continued development.

⭐ Subscribe - Silver or Gold plan | Get API Key for CAD Cloud

Community

Major Dependencies

OpenCascade Technology (OCCT)

License

MIT © Bit By Bit Developers