Hacker News

Open-Source Reflect Rewrite

Hacker News - Tue, 07/14/2026 - 8:09am
Categories: Hacker News

Show HN: bigdraw, a big shared canvas anyone can draw on

Hacker News - Tue, 07/14/2026 - 8:08am

Hey - bigdraw is a little project I've been working on which lets strangers to draw together on a shared canvas. No signups required - just click on a tile to claim and draw on it. It's inspired by r/place, One Million Checkboxes, and JSPaint.

The backend's a Go+SQLite server that handles submissions and generates map tiles (think OpenStreetMap). This lets you zoom out to see tens of thousands of drawings on one screen. In theory... there are only a hundred or so drawings so far.

On the frontend, 2D canvas is used for rendering the "map" tiles and the grid. The fog is rendered with WebGL. I wrote more about how bigdraw works here: https://alexplescan.com/posts/2026/07/07/bigdraw/

I'd love any feedback, but there are two things I'm particularly interested in:

Thoughts on handling drawing on touch devices, where by their very nature your finger obscures exactly what you want to see the most: where and what you're drawing!

Moderation is a concern. I want to keep user anonymity, but also keep bigdraw a nice place to be - and the two can be at odds with each other. I've added crowsourced tile reporting and user/IP blocking, but those seem like short term strategies.

Thanks for reading and checking out bigdraw :)

Comments URL: https://news.ycombinator.com/item?id=48905518

Points: 1

# Comments: 0

Categories: Hacker News

Equana – Numerical Computing

Hacker News - Tue, 07/14/2026 - 8:07am

Article URL: https://equana.dev/

Comments URL: https://news.ycombinator.com/item?id=48905499

Points: 1

# Comments: 0

Categories: Hacker News

SQLite Is All You Need

Hacker News - Tue, 07/14/2026 - 8:07am
Categories: Hacker News

Show HN: Parametric 3D models created using JavaScript

Hacker News - Tue, 07/14/2026 - 8:06am

I wanted to share a tiny website I created for the parametric models I made with Replicad[1]. I'm pretty sure I found Replicad oh HN and I've been using it since to create models for 3D printing.

And yesterday I finally found time to create a small static site for them. Replicad has an option to export to SVG which I used to generate these previews.

All models are open source under MIT license.

[1] https://replicad.xyz/

Comments URL: https://news.ycombinator.com/item?id=48905477

Points: 1

# Comments: 0

Categories: Hacker News

Most intellectual labour is proof of work

Hacker News - Tue, 07/14/2026 - 8:05am

Article URL: https://blog.jsbarretto.com/post/pow

Comments URL: https://news.ycombinator.com/item?id=48905470

Points: 3

# Comments: 0

Categories: Hacker News

Sorted Rank Coding

Hacker News - Tue, 07/14/2026 - 8:04am
Categories: Hacker News

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