Python绘制时钟的示例代码
作者：我的天才女友
这篇文章主要介绍了如何利用Python和Pygame库绘制一个简单的时钟效果。文中的示例代码讲解详细，对我们学习Python有一定帮助，需要的可以参考一下
导入需要的包设置变量
from datetime import datetime
from pygame.locals import *
import sys, math, pygame
def print_text(font, x, y, text, color=(255, 255, 255)):
img_text = font.render(text, True, color)
screen.blit(img_text, (x, y))
def wrap_angle(angle):
return angle % 360
pygame.init()
screen = pygame.display.set_mode((600, 500))
pygame.display.set_caption("在线时钟")
# 设置字体
font1 = pygame.font.SysFont("方正粗黑宋简体", 24)
orange = 220, 180, 0
white = 255, 255, 255
yellow = 255, 255, 0
pink = 255, 100, 100
pos_x = 300
pos_y = 250
radius = 250
angle = 360
这里绘制一个600*500的屏幕，设置圆心位置及其半径。根据时间的不同，计算弧度，通过三角函数计算出对应的坐标，从圆心的位置绘制出时针的线条。
写数字
通过循环1到12，将数字写在对应的位置上，-10 和对应的字体微调使其更加对正
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(font1, pos_x + x, pos_y + y, str(n))
绘制时针
这里通过时间计算出对应的角度，然后从圆心到指定位置画时针。
hour_angle = wrap_angle(hours * (360/12) - 90) + wrap_angle(minutes * (360/60) - 90) / 60
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, (pos_x, pos_y), target, 25)
完整代码
from datetime import datetime
from pygame.locals import *
import sys, math, pygame
def print_text(font, x, y, text, color=(255, 255, 255)):
img_text = font.render(text, True, color)
screen.blit(img_text, (x, y))
def wrap_angle(angle):
return angle % 360
pygame.init()
screen = pygame.display.set_mode((600, 500))
pygame.display.set_caption("在线时钟")
# 设置字体
font1 = pygame.font.SysFont("方正粗黑宋简体", 24)
orange = 220, 180, 0
white = 255, 255, 255
yellow = 255, 255, 0
pink = 255, 100, 100
pos_x = 300
pos_y = 250
radius = 250
angle = 360
while True:
for event in pygame.event.get():
if event.type == QUIT:
pygame.quit()
sys.exit()
keys = pygame.key.get_pressed()
if keys[K_ESCAPE]:
pygame.quit()
sys.exit()
screen.fill((154, 205, 255))
pygame.draw.circle(screen, white, (pos_x, pos_y), radius, 6)
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(font1, pos_x + x, pos_y + y, str(n))
today = datetime.today()
hours = today.hour % 12
minutes = today.minute
seconds = today.second
hour_angle = wrap_angle(hours * (360/12) - 90) + wrap_angle(minutes * (360/60) - 90) / 60
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, (pos_x, pos_y), target, 25)
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, (pos_x, pos_y), target, 12)
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, (pos_x, pos_y), target, 6)
pygame.draw.circle(screen, white, (pos_x, pos_y), 20)
print_text(font1, 0, 0, str(hours) + ":" + str(minutes) + ":" + str(seconds))
pygame.display.update()
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