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.
I'm guessing you are doing somthing like this (no peeking): for(c.width|=w=128,i=64;i--;x.font='4cm a')(X=i%8)%2==(Y=i>>3)%2||x.fillRect(X*w,Y*w,w,w);x.fillStyle='red',x.fillText('♛',w*3*S(t)+w*3,w*4)
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)