t = Elapsed time (seconds)c = Canvasw = Canvas widthh = Canvas heightx = Canvas contextS = Math.sinC = Math.cosT = Math.tanR(r,g,b,a=1) = "rgba(r,g,b,1)"rseed(string) = seed RNGrfloat(m=0, n=1) = random float in range [m, n)rint(m=0, n=maxint) = random integer in range [m, n]rchoice(list) = random element in list