关于#python#的问题：我想用pygame编写一个贝塞尔曲线函数

import pygame
import sys

# 初始化pygame
pygame.init()

# 创建屏幕
width, height = 800, 600
screen = pygame.display.set_mode((width, height))
pygame.display.set_caption("Bezier Curve")

# 设置颜色
black = (0, 0, 0)
white = (255, 255, 255)

# 控制点
control_points = [(100, 200), (250, 50), (400, 400), (550, 200)]

# 控制点之间的距离参数，决定贝塞尔曲线的形状
t_values = [i/100 for i in range(101)]

def draw_bezier_curve(control_points, width):
    # 清空屏幕
    screen.fill(white)

    # 绘制控制点
    pygame.draw.circle(screen, black, control_points[0], 5)
    pygame.draw.circle(screen, black, control_points[1], 5)
    pygame.draw.circle(screen, black, control_points[2], 5)
    pygame.draw.circle(screen, black, control_points[3], 5)

    # 计算贝塞尔曲线上的点
    bezier_points = [pygame.Vector2(pygame.math.bezier(t, control_points)) for t in t_values]

    # 绘制贝塞尔曲线
    pygame.draw.aalines(screen, black, False, bezier_points, width)

    # 更新屏幕
    pygame.display.flip()

# 游戏循环
while True:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            sys.exit()

    # 按下键盘左右箭头键来增加或减少曲线的粗细
    keys = pygame.key.get_pressed()
    if keys[pygame.K_LEFT]:
        width -= 1
    elif keys[pygame.K_RIGHT]:
        width += 1

    draw_bezier_curve(control_points, width)