Tkinter中多边形的可变角点数

import tkinter as tk

def change_polygon():
    # 获取输入的角点数
    num_sides = int(entry.get())
    
    # 清空画布
    canvas.delete("polygon")
    
    # 计算多边形的顶点坐标
    center_x = 150
    center_y = 150
    radius = 100
    angle = 2 * math.pi / num_sides
    points = []
    for i in range(num_sides):
        x = center_x + radius * math.cos(i * angle)
        y = center_y + radius * math.sin(i * angle)
        points.append((x, y))
    
    # 绘制多边形
    canvas.create_polygon(points, fill="red", outline="black", width=2, tags="polygon")

# 创建主窗口
root = tk.Tk()
root.title("可变角点数的多边形")

# 创建画布
canvas = tk.Canvas(root, width=300, height=300)
canvas.pack()

# 创建输入框和按钮
entry = tk.Entry(root)
entry.pack()
button = tk.Button(root, text="绘制多边形", command=change_polygon)
button.pack()

# 运行主循环
root.mainloop()