WebGL Gray-Scott Explorer (2012)

The Gray-Scott equations can produce most of the types of patterns that are possible in reaction-diffusion systems. For a complete description of Gray-Scott patterns, with many examples and videos, go to my Xmorphia Gray-Scott page . Instructions: Use the mouse to draw in the large image area. Alternate clicks paint "high-U" (red in the default colours) or "low-U" (blue). The init button makes the pattern blank, or random. Click it multiple times until you get what you want. Use the list of presets to see examples of patterns from the wide diversity of types available. Each preset has a classification (usually a Greek letter); these are explained on the separate page Pearson's Classification (Extended) of Gray-Scott System Parameter Values. Negative bubbles (sigma) : Hit Init until you get blue spots on a red background. They will grow, but not join; you'll end up with blue bubbles separated by red lines. Hit Init until you get blue spots on a red background. They will grow, but ... Read full article.