a simple analog clock using pygame

analog_clock.py

from datetime import datetime
from math import cos, sin, radians
import pygame

WIDTH, HEIGHT = 800, 600
ORIGIN = (WIDTH // 2, HEIGHT // 2)


def polar_to_cartesian(length: float, theta: float):
    return (length * cos(radians(theta)), length * sin(radians(theta)))


def scale_coordinate(coordinate: tuple[float, float]):
    x, y = coordinate
    return (ORIGIN[0] + x, -y + ORIGIN[1])


pygame.init()
SCREEN = pygame.display.set_mode((WIDTH, HEIGHT))
pygame.display.set_caption("analOGUE Clock")


HOUR_HAND_LENGTH = 50
MINUTE_HAND_LENGTH = 80
SECOND_HAND_LENGTH = 100


if __name__ == "__main__":
    clock = pygame.time.Clock()
    running = True
    while running:
        clock.tick(30)
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                running = False

        SCREEN.fill("black")
        pygame.draw.circle(SCREEN, "pink", ORIGIN, SECOND_HAND_LENGTH + 20)
        pygame.draw.circle(SCREEN, "red", ORIGIN, 5)
        now = datetime.now()
        hand_data = {
            HOUR_HAND_LENGTH: -30 * (now.hour % 12) - 0.5 * now.minute + 90,
            MINUTE_HAND_LENGTH: now.minute * -6 - now.second * 0.1 + 90,
            SECOND_HAND_LENGTH: now.second * -6 + 90
        }
        for length, angle in hand_data.items():
            pygame.draw.line(
                SCREEN, "white", ORIGIN, scale_coordinate(polar_to_cartesian(length, angle)), 4
            )
        pygame.display.update()