opencascade.js
yjs
opencascade.js | yjs | |
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9 | 53 | |
547 | 15,225 | |
- | 2.7% | |
4.4 | 8.6 | |
9 months ago | 2 days ago | |
Python | JavaScript | |
GNU Lesser General Public License v3.0 only | MIT |
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opencascade.js
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Is there a tutorial for making a CAD tool with Three.js?
For proper CAD in browser, you'd need something like opencascadejs. I've integrated it to Polygonjs, here is an example scene, and a video intro
- Fornjot: A next-generation Code-CAD application
- Opencascade.js:Port of the OpenCascade Library to JavaScript/WebAssembly
- GitHub - donalffons/opencascade.js: Port of the OpenCascade library to JavaScript / WebAssembly using Emscripten
- Opencascade.js β Port of OpenCascade 3D CAD Kernel to JavaScript / WASM
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CadQuery β- A Python parametric CAD scripting framework based on OCCT
That confirms the impression I had, I guess they are just so complex that building a new open source one from scratch would be Herculean effort. Guess OCCT is the only option for now.
The itch I would love to scratch is an online real-time collaborative parametric cad app using CRTDs. Current thinking is combining OpenCascade compiled to WASM [0] with Yjs[1], but frankly donβt have the time.
0: https://github.com/donalffons/opencascade.js/
1: https://github.com/yjs/yjs
- Opencascade.js: Port of OpenCascade CAD Library to JavaScript and WebAssembly
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Hey Rustaceans! Got an easy question? Ask here (45/2021)!
Can I access a library that is compiled to WASM (e.g. openCascade.js) directly from a rust client web app that runs in the browser? The library is lgpl so I'd want to "dynamically link" to it.
yjs
- Show HN: Collaborate on your YC Application with CRDT-powered forms
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Making CRDTs 98% More Efficient
One idea is just to use fewer random bits in peerIDs. Yjs (https://docs.yjs.dev/) gets away with just 32 random bits. If you compromise and use 64 random bits, then even a very popular doc with 1 million lifetime peerIDs will have a < 10^-7 lifetime probability of collision.
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An Interactive Intro to CRDTs
I've seen it come up often in collaborative text editors.
Also see: https://github.com/yjs/yjs
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JSON Schema Store
You are absolutely right that XML is better for document structures.
My current theory is that Yjs [0] is the new JSON+XML. It gives you both JSON and XML types in one nested structure, all with conflict free merging via incremental updates.
Also, you note the issue with XML and overlapping inline markup. Yjs has an answer for that with its text type, you can apply attributes (for styling or anything else) via arbatary ranges. They can overlap.
Obviously I'm being a little hypabolic suggesting it will replace JSON, the beauty of JSON is is simplicity, but for many systems building on Yjs or similar CRDT based serialisation systems is the future.
https://github.com/yjs/yjs/
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Launch HN: Tiptap (YC S23) β Toolkit for developing collaborative editors
Note: https://github.com/yjs/yjs for collaborative "document edition, and user cursors"; has WebRTC, web socket, matrix.org backend
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Wormholers, what can CCP and wormholers do to improve J-Space?
CCP needs to revamp proto anyway, due to recent exploits... practically, nothing really prevents 'em from using some sort of CRDT's to make the state of the sig view eventually consistent (yjs lib, if we're speaking frontendian).
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How to use Yjs with Ruby on Rails?
Yjs framework: Because it is a CRDT implementation which provides collaborative editing and offline-first capability.
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πππ EweserDB, the user-owned database πππ
No problem. The database CRUD features are just helpers as an abstraction on top of yjs: https://docs.yjs.dev/. Eweser adds schemas in the form of typescript types to make using it simpler, more structured, and interoperability easier.
- Ask HN: What is new in Algorithms / Data Structures these days?
- How does Google docs send the changes done by other users in real-time?
What are some alternatives?
rust - Empowering everyone to build reliable and efficient software.
automerge - A JSON-like data structure (a CRDT) that can be modified concurrently by different users, and merged again automatically.
Kind - A next-gen functional language [Moved to: https://github.com/Kindelia/Kind2]
liveblocks - Liveblocks is a platform to ship collaborative features like comments, notifications, text editors in minutes instead of months.
EngrCAD
automerge-rs - Rust implementation of automerge [Moved to: https://github.com/automerge/automerge]
CQ-editor - CadQuery GUI editor based on PyQT
crdt-woot - Implementation of collaborative editing algorithm CRDT WOOT.
truck - Truck is a Rust CAD Kernel.
milkdown - πΌ Plugin driven WYSIWYG markdown editor framework.
fornjot - Early-stage b-rep CAD kernel, written in the Rust programming language.
MobX - Simple, scalable state management.