# ENFPDEV

- **Event:** [Meta Global AI Developer Hackathon](https://cerebralvalley.ai/e/meta-ai-developer-hackathon)
- **When:** Oct 26, 12:00 PM – Nov 4, 9:00 PM (EST)
- **Where:** Online
- **Team:** [Jaeil Roh](https://cerebralvalley.ai/u/ENFPDEV)
- **GitHub:** https://github.com/enfp-dev-studio/this-and-that
- **Demo video:** https://youtu.be/pK85YmJhgYs
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/3001

This & That: complex edits, asked simply. Draw and talk at the same time.

AI image and 3D tools get you 90% there. The last 10% is details, and words can't point. With This & That you circle or sketch on the picture (or on a 3D model) while you speak: "make this gem this shape", "remove this, make this red, and add a little star here". Meta's models turn the strokes and the voice into one instruction, and only what you marked changes.

- Image mode: shape sketches, references, and several edits in one breath. Everything outside the marks stays pixel-identical: text-only edits changed 10.4% of the untouched pixels, This & That 0.6%.
- 3D mode (beta): reshape a low-poly model by drawing (lengthen the blade, bend it into a katana, set a gem) and bake detail edits into a high-quality model's texture.

Measured on 6 hard cases: 124 typed words vs about 30 spoken. "Third row, fifth from the left" changed the wrong macaron; one tap got it right.

Try it live: https://this-and-that.enfpdev.workers.dev (passcode: willow-ember-87). Chrome recommended; a tablet with a stylus works best.

## More from Meta Global AI Developer Hackathon

- [Little Adventures](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2998)
- [Uptrugime](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2999)
- [Univerlab.org](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/3000)
- [ORCA by IssueLab](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/3002)
- [Etoundi Ondoua Ngando Emmanuel Tresor](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/3003)
- [Two Eyes](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/3004)

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