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Reaction-Diffusion Explorer Tool

https://karlsims.com/rdtool.html

Interactive web application for creating reaction-diffusion textures and patterns

This is a fantastic interactive simulation exploring the possibilities of a deceptively simple system.

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"As you adjust the sliders and options, the URL in your browser is automatically updated with a random looking string of characters that encodes all the current parameter values. You can save, forward, or bookmark that URL to preserve specific combinations of settings."

very cool!