TouchDesigner Tutorial: Create Organic Pixel Type using the POPs Operator Family (Easy)

In this TouchDesigner tutorial, you will learn how to build a organic pixel type effect using the new POP operator family. We explore how to transform 2D textures from Noise and Text TOPs into a 3D particle system using the TopTo POP and Atribute Combine POP. The tutorial also covers methods for instancing geometry with the Copy POP and rendering with a mix of PBR, Point Sprite, and Wireframe materials. Download the fully Project File on Patreon.

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*TIMECODE*
00:00 *Introduction*
We start the Superfast TouchDesigner tutorial series building an organic pixel system.
We utilize the new POP operator family to create complex living systems from 2D textures.

00:38 *System Architecture Overview*
We begin with a high-level look at how the operator network is structured for efficiency.
This overview maps the path from noise textures to converted 3D particle data.

01:23 *Network Variables Setup*
We initialize the system by setting up core variables using a Constant CHOP.
Defining resolution and geometry size here allows for global control later.

01:48 *Texture Logic Generation*
Noise TOP parameters are tuned to create the base movement and visual texture.
Using Python expressions in the translate Z ensures continuous, evolving animation.

02:54 *Feedback Loop & Trails*
A feedback loop is built using Feedback and Level TOPs to generate motion trails.
The smoothness is set to nearest pixel to maintain the sharp organic aesthetic.

04:10 *Top to POP Conversion*
The TopTo POP operator converts our 2D texture data into 3D particle positions.
We use multiple instances to capture both color and height map information.

04:59 *Instancing & Box Geometry*
Box SOP geometry is instanced onto the particle data using the powerful Copy POP.
Attribute POPs are used to vary the rotation and scale based on pixel values.

06:48 *Camera & Final Render*
The final scene is assembled with a multi-layered render involving PBR and Wireframe mats.
The Camera Viewport tool and environment lighting provide the final professional polish.

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I hope you liked this tutorial! If you have any questions, feel free to ask in the comments below.

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