Python绘制时钟的示例代码
目录
- 导入需要的包设置变量
- 写数字
- 绘制时针
- 完整代码
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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