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Looping Noise Part 1: Ending at the Beginning For Beginners & Intermediate

This beginner level TouchDesigner tutorial explores a method for looping noise for the purpose of creating looping animations. In it we will recreate a Processing sketch by Étienne Jacob, which is featured in his blog post Drawing from noise, and then making animated loopy GIFs from there. The article has lots of great examples of working with noise, and was how I first encountered the looping technique myself. My coresponding write up includes a quick breakdown of the specific looping noise technique that is covered in the tutorial. There are a few other ways of deriving loops from noise which I will cover in subsequent tutorials in this mini-series. If you have questions, comments, suggestions or corrections please leave them below, and thanks for watching and reading!

TouchDesigner Build: 2019.14650 or later.

Note: If you’re exporting a movie file or GIF, there’s one step I missed mentioning in the last section of the video. After stopping at the end of the timeline pause playback and click ‘+’ to move to the first frame. Then press record followed by play to start playback. This will prevent doubling the last frame in your loop.

 

Topic Timestamps:

00:00 - Intro

02:01 - Building the Render Network

03:50 - Instancing a Grid

05:29 - Displacement with Pattern CHOP and Noise TOP

09:38 - Shaping Noise Amplitude

11:30 - Cropping to a Circle

12:50 - Feedback Motion Blur

15:30 - Looping Noise (Concept)

18:15 - Looping Noise (Application)

22:32 - Exporting as a GIF

 

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