I Built a Gesture Controlled Fluid Simulation (And Accidentally Fought GitHub)

So I had a simple idea:
“Let’s control a fluid simulation with hand gestures.”

Now I have:

• 10,000 particles
• A racing mode
• Audio reactivity
• A physics engine
• And emotional damage from GitHub’s 100MB file limit

Worth it.

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What Is HydraFlow?

HydraFlow is a real-time, gesture-controlled fluid simulation where your hands literally control physics.

Open palm?
Particles fly away.
Pinch?
Black hole.
Fist?
Time stops.
Two hands?
Magnetic chaos.

It’s like Doctor Strange, but with Python and worse life choices.

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The Cool Stuff

• 10,000 particles moving at 60 FPS
• MediaPipe hand tracking
• Multiple visual modes (Matrix, Heatmap, Disco, etc.)
• Audio-reactive effects (yes, it vibes to music)
• Racing mode where you steer with your hands
• Glow, trails, chaos mode because subtlety is overrated

Your webcam becomes a controller.
Your hands become an API.

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The GitHub Villain Arc

Everything was going great until I tried to push my repo.

GitHub saw my .exe file and said:

“That’s cute. Now delete it.”

Turns out GitHub has a 100MB file limit, and my build files were built DIFFERENT.

So I:

• Nuked big files from git history
• Added a proper .gitignore
• Force-pushed like a responsible menace

Now the repo is clean, lean, and judgment-free.

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What I Learned

1. GitHub is not your USB drive
2. Build files are not source code
3. .gitignore is not optional
4. Physics + hand tracking = dopamine
5. Debugging at 2AM builds character

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Why I Built This

Because:

• Mouse control is boring
• Gestures feel futuristic
• Physics is fun
• And I like watching particles suffer

Also, it looks cool on my portfolio.

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Try It Yourself

Repo:
https://github.com/TROJANmocX/HydraFlow

Wave your hands.
Break physics.
Feel powerful.

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Final Thoughts

HydraFlow started as a fun experiment.
It became a full-blown chaos simulator.
And GitHub tried to humble me.

But we move.

If you’re building something weird, ambitious, and slightly unhinged
you’re doing it right.

Comments

[Aryan Choudhary]

Can I connect with you somewhere where we can chat?