u(t) is called 60 times per second.
t: Elapsed time in seconds.
S: Shorthand for Math.sin.
C: Shorthand for Math.cos.
T: Shorthand for Math.tan.
R: Function that generates rgba-strings, usage ex.: R(255, 255, 255, 0.5)
c: A 1920x1080 canvas.
x: A 2D context for that canvas.
here is a golfed white version c.style.filter="blur(1vw)invert(" for(w=c.width|=j=99,w/=8;j--;x.beginPath(x.fill()))f=C(t+j)/5,x.arc(5*w+f*99,w+j*99%999,w/j**.9,3+f,6.4+f)
u(t) is called 60 times per second.
t: elapsed time in seconds.
c: A 1920x1080 canvas.
x: A 2D context for that canvas.
S: Math.sin
C: Math.cos
T: Math.tan
R: Generates rgba-strings, ex.: R(255, 255, 255, 0.5)