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.
best attempt at an uncompressed version: for(c.width=i=512;i--;x.fillStyle=R(X=I%8*8,Y=I/8|7,Z=I&56),x.fillRect(9+C(t+Math.atan(Z/X))*(X*X+Z*Z)**.5,Y,9,9))I=7*(S(t)<0)+56*(C(t)<0)^i
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)