#!/usr/bin/python
# -*- coding: UTF-8 -*-

"""
题目：画图，综合例子。　　
程序分析：利用for循环控制100-999个数，每个数分解出
个位，十位，百位。。
"""

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()