Python 练习实例59

#!/usr/bin/python

# -*- coding: UTF-8 -*-



if __name__  == '__main__':

    from Tkinter import *

    canvas = Canvas(width = 300,height = 300,bg = 'green')

    canvas.pack(expand = YES,fill = BOTH)

    x0 = 150

    y0 = 100

    canvas.create_oval(x0 - 10,y0 - 10,x0 + 10,y0 + 10)

    canvas.create_oval(x0 - 20,y0 - 20,x0 + 20,y0 + 20)

    canvas.create_oval(x0 - 50,y0 - 50,x0 + 50,y0 + 50)

    import math

    B = 0.809

    for i in range(16):

        a = 2 * math.pi / 16 * i

        x = math.ceil(x0 + 48 * math.cos(a))

        y = math.ceil(y0 + 48 * math.sin(a) * B)

        canvas.create_line(x0,y0,x,y,fill = 'red')

    canvas.create_oval(x0 - 60,y0 - 60,x0 + 60,y0 + 60)

    



    for k in range(501):

        for i in range(17):

            a = (2 * math.pi / 16) * i + (2 * math.pi / 180) * k

            x = math.ceil(x0 + 48 * math.cos(a))

            y = math.ceil(y0 + 48 + math.sin(a) * B)

            canvas.create_line(x0,y0,x,y,fill = 'red')

        for j in range(51):

            a = (2 * math.pi / 16) * i + (2* math.pi / 180) * k - 1

            x = math.ceil(x0 + 48 * math.cos(a))

            y = math.ceil(y0 + 48 * math.sin(a) * B)

            canvas.create_line(x0,y0,x,y,fill = 'red')

    mainloop()