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Epilepsy warning: The demo contains rapidly changing patterns and colors which may trigger seizures in susceptible individuals.

What is a quasicrystal? From Matthias Matthiesen:

Quasicrystals are highly structured patterns which are not periodic. Unlike the crystalline structure of e.g. hexagons, a quasicrystal will never line up perfectly with a shifted copy of itself. Here such a structure is created as the interference pattern between 7 waves approaching the centre of the image at equal angles. The 2011 Nobel prize in Chemistry was awarded for the discovery of quasicrystals in chemical compounds.

I originally attempted to use canvas but performance was poor. Instead, I used a fragment shader to render the pattern in real-time.

The inspiration for this demo comes from:

• https://wealoneonearth.blogspot.com/search/label/quasicrystal
• https://mainisusuallyafunction.blogspot.com/2011/10/quasicrystals-as-sums-of-waves-in-plane.html
• https://blog.matthen.com/post/51566631087/quasicrystals-are-highly-structured-patterns-which
• https://www.shadertoy.com/results?query=tag%3Dquasicrystal
• https://en.wikipedia.org/wiki/Quasicrystal