模拟时钟

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# coding=utf8
import sys,pygame,math,random
from pygame.locals import *
from datetime import datetime,date,time


def print_text(font,x,y,text,color=(255,255,255)):
    imgtext = font.render(text,True,color)
    screen.blit(imgtext,(x,y))

def wrap_angle(angle):
    return abs(angle%360)

# main
pygame.init()
screen = pygame.display.set_mode((600,500))
pygame.display.set_caption("CLOCK")
font = pygame.font.Font(None,36)
orange = 220,180,0
white = 255,255
yellow = 255,0
pink = 255,100,100

pos_x = 300
pos_y = 250
radius = 250
angle = 360

# repeating loop
while True:
    for event in pygame.event.get():
        if event.type == QUIT:
            sys.exit()

    keys = pygame.key.get_pressed()
    if keys[K_ESCAPE]:
        sys.exit()

    screen.fill((0,100))

    # draw circle
    pygame.draw.circle(screen,white,(pos_x,pos_y),radius,6)

    # draw the clock number 1-12
    for n in range(1,13):
        angle = math.radians(n*(360/12)-90)
        x = math.cos(angle)*(radius-20)-10
        y = math.sin(angle)*(radius-20)-10
        print_text(font,pos_x+x,pos_y+y,str(n))

    # get the time of day
    today = datetime.today()
    hours = today.hour%12
    minutes = today.minute
    seconds = today.second

    # draw the hours hand
    hour_angle = wrap_angle(hours*(360/12)-90)
    hour_angle = math.radians(hour_angle)
    hour_x = math.cos(hour_angle)*(radius-80)
    hour_y = math.sin(hour_angle)*(radius-80)
    target = (pos_x+hour_x,pos_y+hour_y)
    pygame.draw.line(screen,pink,target,12)

    # draw the minutes hand
    min_angle = wrap_angle(minutes*(360/60)-90)
    min_angle = math.radians(min_angle)
    min_x = math.cos(min_angle)*(radius-60)
    min_y = math.sin(min_angle)*(radius-60)
    target = (pos_x+min_x,pos_y+min_y)
    pygame.draw.line(screen,orange,12)

    # draw the seconds hand
    sec_angle = wrap_angle(seconds*(360/60)-90)
    sec_angle = math.radians(sec_angle)
    sec_x = math.cos(sec_angle)*(radius-40)
    sec_y = math.sin(sec_angle)*(radius-40)
    target = (pos_x+sec_x,pos_y+sec_y)
    pygame.draw.line(screen,yellow,12)

    # draw the center
    pygame.draw.circle(screen,20)

    print_text(font,str(hours) + ":" + str(minutes) + ":" + str(seconds))
    pygame.display.update()

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