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