139 characters of JavaScript
function u(t) { for(x.fillRect(0,0,2e3,2e3), i=w=400;i>-400;i-, x.clearRect(960+960*i/w,540+ 250*S(i/40-t)*C(t+S(i/9)+ S(i+t))*S(t+i/99),6,6))x.globalAlpha=.1 }
🌀 https://www.dwitter.net/d/21736
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