python-arcade时钟

最近开始学习arcade的图形库，感觉功能很丰富，尝试画了个时钟，显示如下：

贴上调整好的代码：

 import arcade
 import math,time

 SCREEN_WIDTH = 800
 SCREEN_HEIGHT = 600
 # These constants control the particulars about the radar
 CENTER_X = SCREEN_WIDTH // 2
 CENTER_Y = SCREEN_HEIGHT // 2
 RADIANS_PER_FRAME = 0.01
 SWEEP_LENGTH = 250

 List = []
 def points():
     for i in range(1,13):
         x = 400 + 230*math.sin(2*math.pi*i/12)

         y = 300 + 230*math.cos(2*math.pi*i/12)
         arcade.draw_text(f"{i}",x,y,arcade.color.WHITE,12)
 def draw_lines(radius,line_width,rad):
     x = 400 - radius * math.cos(math.pi / 2 + rad)

     y = 300 + radius * math.sin(math.pi / 2 + rad)
     line = arcade.draw_line(400, 300, x, y,arcade.color.WHITE,line_width)
     List.append(line)
 def on_draw(delta_time):
     arcade.start_render()
     #外圆
     arcade.draw_circle_outline(CENTER_X, CENTER_Y, SWEEP_LENGTH, arcade.color.DARK_GREEN, 10)
     #数字显示
     points()

     tm = time.localtime()
     cur_time2 = time.strftime('%Y-%m-%d %X', time.localtime())
     t_hour = 0
     if tm.tm_hour<=12:
         t_hour=tm.tm_hour
     else:
         t_hour=tm.tm_hour-12
     rad1=2*math.pi*(t_hour+tm.tm_min/60)/12

     rad2=2*math.pi*(tm.tm_min+tm.tm_sec/60)/60

     rad3=2*math.pi*tm.tm_sec/60

     draw_lines(100,6,rad1)

     draw_lines(140,3,rad2)

     draw_lines(180,1,rad3)
     arcade.draw_text(f"{cur_time2}",CENTER_X-70,20,arcade.color.WHITE,12)

 def main():
     arcade.open_window(SCREEN_WIDTH,SCREEN_HEIGHT,"Radar Sweep Example")
     arcade.set_background_color(arcade.color.BLACK)
     arcade.schedule(on_draw,1)
     arcade.run()

     arcade.close_window()
 if __name__ == '__main__':
     main()

使用的是python 3.6.4版本