TouchDesigner Tutorial: Create a GLSL Cymatics System (Medium)

In this TouchDesigner tutorial, we build a complex cymatics system using a high-density particle simulation. We utilize a Point Generator POP to create 500,000 points and a GLSL POP compute shader to drive mathematical displacement via Chladni equations. The system is managed by an LFO CHOP and Python logic to automate pattern resets and ensure smooth 32-bit float rendering. Download the fully Project File on Patreon

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*TIMECODE*

00:00 *Build a Cymatics System*
In this superfast tutorial we build a cymatics system in TouchDesigner.
We use an LFO CHOP to reset a feedback loop with 500,000 particles.

00:37 *Project Overview*
We flatten a massive volume of points into a 2D emission surface.
A custom GLSL script warps their positions based on frequency data.

01:30 *Network Building & Automation*
We use an LFO CHOP and Python script to automate simulation values.
Every pulse generates new random math logic to create unique patterns.

02:31 *Visual System & POPs*
Defining our 500,000 points using a Point Generator POP and Transform.
We sync the feedback reset to the LFO to keep the patterns fresh.

04:08 *GLSL Code Breakdown*
Explaining how uniform variables and hash functions drive the simulation.
We map invisible hills and valleys using sine and cosine functions.

05:11 *Chladni Physics Functions*
Mathematical core calculates resonance and gradients for every point.
The points move toward nodal lines where vibration amplitude is zero.

06:49 *Applying Noise & Movement*
We add a Noise POP to create continuous organic abstract movement.
This closes the feedback loop by feeding noise into the target input.

07:16 *Rendering & 32-bit Float*
Setting up the Geometry COMP and Point Sprite MAT for the final look.
Using RGBA 32-bit float for high dynamic range and perfect blending.

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