A screensaver in Julia

screensaver.jl

pallete = Array(String, 93)
i = 1
for bg = 232:(255-1)
    for char in [" ", "░", "▒", "▓"]
        pallete[i] = "\e[38;5;$(bg+1)m\e[48;5;$(bg)m$(char)\e[0m"
        i += 1
    end
end
pallete[93] = "\e[48;5;$(255)m \e[0m"

cols = float(readall(`tput cols`))
lines = float(readall(`tput lines`))

print("\e[?25l")
bound(i) = max(1, min(93, int(i)))
for i = 1:1000
    t = time()
    print("\e[H")
    for yy = 1.0:lines
        y = yy*1.6 # Try to adjust for aspect ratio
        for x = 1.0:cols
            i = 47 * (cos(sin(x/3.3) + sin(sin(x/4) + cos(y/5.4)) + t) * sin(sqrt(((x-cols/2)/2)^2 + ((y-(lines*1.6)/2)/2)^2)/2 - t*5)) + 46
            print(pallete[bound(i)])
        end
        if yy != lines; println(); end
    end
    print("\e[0m")
end
print("\e[?25h")