# JClock VII

This alternative clock is not really readable by human. It calculates the first 144¹ primes, assigns 60 of them to every possible second, 60 to every possible minute and 24 to every possible hour.
Multiplying those three primes for a given time results in a composite number representing said time. Using integer factorization, you then can get the three primes back, map them to seconds, minutes and hours, and by doing so calculate the time.

¹This number is the sum of 60 seconds, 60 minutes and 24 hours.

``````# Python 2.7.7 Code
# Pygame 1.9.1 (for Python 2.7.7)
# Jonathan Frech 13th of November, 2015``````

``````# importing needed modules
import pygame, sys, time, math, os, random, datetime
pygame.font.init()

""" CLASSES """
# dummy class for global variables
class dummy():
pass

""" FUNCTIONS """
# saves the current surface
def savesurf():
try:
if not os.path.isdir(main.SAVEPATH):
os.mkdir(main.SAVEPATH)

name = "img" + addzeros(len(os.listdir(main.SAVEPATH))) + ".png"
pygame.image.save(pygame.transform.scale(main.SURF, main.SCALESIZE), main.SAVEPATH + name)
except:
pass

# calculate primes up to n
def getprimes(n):
primes = []
w = 2
while len(primes) < n:
prime = True
for _ in range(2, w):
if w % _ == 0:
prime = False
if prime:
primes.append(w)
w += 1
return primes

# returns a string with fixed length
length = 5

if n > 10 ** (length+1) - 1:
n = 10 ** (length+1) - 1
string = str(n)
while len(string) < length:
string = "0" + string

return string

# saves gif (used for animated gif in the article)
def savegif():
# save all frames for two minutes, starting at 13:00:00
for m in range(0, 2):
for s in range(0, 60):
render(True, s, m, 13)
quit()

# quits the program
def quit():
sys.exit()

""" TICK; RENDER """
# tick function
def tick():
# handle events
for event in pygame.event.get():
if event.type == pygame.QUIT:
quit()

# render function
def render(_faketime = False, _second = 0, _minute = 0, _hour = 0):
# fill
main.SURF.fill([0, 0, 0])

if not _faketime:
now = datetime.datetime.now()
_second = now.second
_minute = now.minute
_hour = now.hour

second = main.PRIMES[_second]
minute = main.PRIMES[_minute+60]
hour = main.PRIMES[_hour+60+60]
composite = second * minute * hour

text1 = main.FONTBIG.render(str(composite), 1, [255, 255, 255])
rect1 = text1.get_rect()
pos1 = [(main.WIDTH - rect1.right) / 2, (main.HEIGHT - rect1.bottom) / 2]

text2 = main.FONTSMALL.render(str(hour) + " * " + str(minute) + " * " + str(second), 1, [255, 0, 0])
rect2 = text2.get_rect()
pos2 = [(main.WIDTH - rect2.right) / 2, ((main.HEIGHT - rect2.bottom) / 2) - rect1.bottom]

text3 = main.FONTSMALL.render(str(_hour) + ":" + str(_minute) + ":" + str(_second), 1, [255, 0, 0])
rect3 = text3.get_rect()
pos3 = [(main.WIDTH - rect3.right) / 2, ((main.HEIGHT - rect3.bottom) / 2) + rect1.bottom]

main.SURF.blit(text1, pos1)
main.SURF.blit(text2, pos2)
main.SURF.blit(text3, pos3)

if _faketime and composite != main.LASTCOMPOSITE:
main.LASTCOMPOSITE = composite
savesurf()

# blit and flip
main.SCREEN.blit(pygame.transform.scale(main.SURF, main.SCALESIZE), [0, 0])
pygame.display.flip()

""" INIT """
# initialize program
def init():
main.WIDTH, main.HEIGHT = 1080, 720
main.SIZE = [main.WIDTH, main.HEIGHT]
main.SURF = pygame.Surface(main.SIZE)

main.SCALEWIDTH, main.SCALEHEIGHT = 1080, 720
main.SCALESIZE = [main.SCALEWIDTH, main.SCALEHEIGHT]
main.SCREEN = pygame.display.set_mode(main.SCALESIZE)

main.CAPTION = "JClock VII"
main.SAVEPATH = os.getcwd() + "/gif/"

main.TICKS = 0
main.KEYSDOWN = []

main.PRIMES = getprimes(60+60+24)
main.FONTBIG = pygame.font.SysFont(None, 100)
main.FONTSMALL = pygame.font.SysFont(None, 20)
main.LASTCOMPOSITE = 0

# printput the 144 primes
"""s = "\n"
for _ in range(0, 60):
s += str(main.PRIMES[_]) + "; "
print s

s = "\n"
for _ in range(0, 60):
s += str(main.PRIMES[_+60]) + "; "
print s

s = "\n"
for _ in range(0, 24):
s += str(main.PRIMES[_+60+60]) + "; "
print s
print
#"""

# only used for creating the frames for the animated gif
#savegif()

# functions
pygame.display.set_caption(main.CAPTION)

""" RUN """
# run function (uses tick() and render())
def run():
ticksPerSecond = 60
lastTime = time.time() * 1000000000
nsPerTick =  1000000000.0 / float(ticksPerSecond)

ticks = 0
frames = 0

lastTimer = time.time() * 1000
delta = 0.0

while True:
now = time.time() * 1000000000
delta += float(now - lastTime) / float(nsPerTick)
lastTime = now
shouldRender = False

while delta >= 1:
ticks += 1
main.TICKS += 1
tick()
delta -= 1
shouldRender = True

if shouldRender:
frames += 1
render()

if time.time() * 1000 - lastTimer >= 1000:
lastTimer += 1000

# debug
# print("Frames: " + str(frames) + ", ticks: " + str(ticks))

frames = 0
ticks = 0

# main variable
main = dummy()
init()

# start program
run()``````